JP5287512B2 - Peripheral device, program, and network system - Google Patents

Description

  The present invention relates to a network system having one or more computers and a peripheral device that receives an operation request transmitted from the computer and performs an operation according to the operation request.

  2. Description of the Related Art Conventionally, a network system including a server, a computer that can communicate with the server via a network, and a peripheral device that can communicate with the computer via the network is known.

  In this type of network system, the computer acquires the latest firmware of the digital multi-function peripheral that is a peripheral device from the server. The digital multi-function peripheral periodically accesses the computer, so that the computer If the firmware is the latest, the firmware is downloaded from a computer and updated (see, for example, Patent Document 1).

JP 2008-59265 A

By the way, normally, peripheral devices such as printers and digital multifunction peripherals cannot accept an operation request from a computer during a firmware update.
In the invention described in Patent Document 1, since the peripheral device actively (periodically) updates the firmware at a timing convenient for the peripheral device, the computer operates the peripheral device. Even when a request needs to be sent urgently (for example, when printing needs to be done urgently), an operation request from the computer cannot be accepted while the peripheral device is updating. There was a problem.

  The present invention has been made in view of the above points, and it is an object of the present invention to provide a technique for a peripheral device to update firmware at an appropriate timing.

The configuration described in this specification made to achieve the above object is a peripheral device that receives an operation request transmitted from one or more computers and performs an operation according to the operation request. Update means for downloading firmware from a storage device storing the latest firmware to be installed in the device, and updating its own firmware to the firmware downloaded from the storage device, and the peripheral device updates the firmware to the computer. Inquiry means for inquiring whether or not to permit the update, and the update means updates the firmware when the peripheral device is permitted to update the firmware by all computers inquired by the inquiry means. And performing.

  According to this, the peripheral device does not actively update the firmware at a timing that is convenient for the peripheral device, but if the update permission is received from all computers inquired by the inquiry means, Since the update is performed, it is possible to reduce the possibility that an operation request cannot be received from the computer to the peripheral device during the firmware update.

Therefore, the peripheral device can update the firmware at an appropriate timing.
The inquiry means may be configured to make an inquiry to the computer again when the peripheral device is not permitted to update the firmware by at least one of the inquired computers.

  If this is done, the inquiry by the inquiry means is repeatedly performed by all computers inquired by the inquiry means until the peripheral device is permitted to update the firmware. If all the computers inquired by the means permit the update, the update can be performed promptly.

In addition, in this case, the query means, after a lapse of only re-transmission time that has been specified by the questions have combined computer, the computer, again, if it is to carry out the inquiry, useless against computer inquiry There is no need to do.

The configuration described in the present specification further includes selection means for selecting a computer to be inquired by the inquiry means from one or more computers, the inquiry means for the computer selected by the selection means. It is characterized by making an inquiry.

  According to this, since the inquiry is made to the computer selected by the selection means, for example, by removing the computer whose usage frequency of the peripheral device is extremely low from the inquiry target, only the computer suitable for the inquiry target is obtained. Inquiries can be made. Therefore, it is possible to make an inquiry efficiently.

The configuration described in the present specification further includes urgency information acquisition means for acquiring urgency information indicating the urgency level of the update in the firmware stored in the storage device, and the inquiry means includes the urgency information acquisition means. If the urgency information acquired by the above indicates that the urgency level is high, the computer does not make an inquiry, and the update means has the urgency level information acquired by the urgency level information acquisition means is high urgency level If this is the case, the firmware is updated.

In other words, urgent update work (for example, correction of security, failure, etc.) has a higher priority than obtaining permission of the computer, so in the configuration described in this specification, when an urgent update command is input, The update means updates the firmware without making an inquiry from the inquiry means.

For this reason, according to the configuration described in the present specification, when there is an urgent update, the firmware can be updated immediately.
Next, the configuration (program) described in the present specification is a computer that can request an operation to a peripheral device and cause the peripheral device to perform an operation according to the operation request. Update that determines whether or not a peripheral device is allowed to update the firmware when it receives an inquiry from the peripheral device whether or not the peripheral device is permitted to update the firmware installed in the device It is made to function as a judgment result notification means for notifying the peripheral device of the judgment result by the permission judgment means and the update permission judgment means.

According to this, the determination result notifying means notifies the peripheral device having the configuration described in this specification of the determination result, so that the peripheral device can determine whether or not to update the firmware. .

That is, the peripheral device is in the right time convenient for the peripheral device, instead of performing a firmware update actively, since to obtain the permission of the firmware update to the computer, herein described above The same effects as those described can be obtained.

Also, the update permission judgment means, when the computer is holding the operation requests made to peripheral devices, it may be determined not to allow the update.

  According to this, it is possible to reliably reduce the possibility that an operation request urgently transmitted from the computer to the peripheral device is not accepted during the firmware update.

Also, the update permission judgment means via the input means capable of inputting information to computer, based on the information input by the user, whether the peripheral device is permitted to perform an update of the firmware You may judge.

According to this, the peripheral device can update the firmware at a timing desired by the user.
For example, when the user is instructing the computer to make an operation request to the peripheral device, it is conceivable that the peripheral device suspends the firmware update.

Accordingly, this also, during the update of the firmware, it is possible to reliably reduce the possibility such not accepted operation request sent urgently to the peripheral device from the computer.

In addition, the configuration described in this specification is such that when the update permission determination unit determines that the peripheral device does not permit the firmware update, the peripheral device reconnects to the computer based on the operating state of the computer. An estimation means for estimating a re-transmission time to be inquired is provided, and the determination result notification means notifies the peripheral device of the estimation result by the estimation means together with the determination result by the update permission determination means.

According to this, I guess means, since the peripheral device to guess the recall time to querying the computer again, peripheral devices is not necessary to perform wasteful queries to the computer.

In addition, the configuration described in the present specification makes an inquiry as to whether or not to permit the peripheral device to update the firmware when the computer on which the program is installed provides the firmware to the peripheral device. When provided from the peripheral device, provided with a provider determination means for determining whether to permit to be the firmware supplier of the peripheral device, the determination result notification means, together with the determination result by the update permission determination means, The determination result by the provider determining means is notified to the peripheral device.

  According to this, since the determination result as to whether or not to become the firmware provider and the determination result as to whether or not to permit the update are simultaneously notified to the peripheral device, the computer is notified to the peripheral device. Can be notified efficiently.

  Accordingly, the peripheral device can efficiently update the firmware based on the latest firmware provided from the computer that provides the firmware.

The configuration described in the present specification is a network system including one or more computers and a peripheral device that receives an operation request transmitted from the computer and performs an operation according to the operation request. Provided in the peripheral device, an update means for downloading the firmware from the storage device storing the latest firmware to be installed in the peripheral device, and updating the own firmware to the firmware downloaded from the storage device, and provided in the peripheral device Inquiry means for inquiring whether the peripheral device is permitted to update the firmware to the computer, and provided in the computer, the peripheral device updates the firmware when receiving an inquiry from the inquiry means. To do Update permission determining means for determining whether to permit or not, and a determination result notifying means provided in the computer for notifying the peripheral device of the determination result by the update permission determining means. The firmware is updated when a notification indicating that the peripheral device is permitted to update the firmware is received from the judgment result notifying means of all the computers.

According to this, the peripheral device does not actively update the firmware at a timing that is convenient for the peripheral device, but if the update permission is received from all computers inquired by the inquiry means, since the update may be peripheral devices updating firmware in a timely manner.

It is a schematic block diagram showing the structure of the whole network system of 1st Embodiment. It is explanatory drawing explaining the monitoring table memorize | stored in the memory | storage part of the printer of 1st Embodiment. 4 is a flowchart of update processing executed by the control unit of the printer of the first embodiment. It is a flowchart of the response process with respect to the agent permission request | requirement instruction | command of 1st Embodiment. It is a flowchart of the response process with respect to the update permission request | requirement instruction | command of 1st Embodiment. It is a flowchart of the response process with respect to the update permission request | requirement instruction | command of 2nd Embodiment. It is a flowchart of the update process of 2nd Embodiment. It is a flowchart of the update process of 3rd Embodiment. It is a flowchart of the response process with respect to the agent availability request command and the update availability request command of the third embodiment. It is a flowchart of the update process of 4th Embodiment.

Embodiments of the present invention will be described below with reference to the drawings.
(First embodiment)
1. Overall Configuration of Network System FIG. 1 is a schematic configuration diagram showing the overall configuration of a network system to which the present invention is applied.

  As shown in FIG. 1, the network system includes a plurality of personal computers 1A to 1E (hereinafter referred to as PCs 1A to 1E), a printer 2, a server 3, and the like.

  The PCs 1 </ b> A to 1 </ b> E and the printer 2 can communicate with each other via a LAN (Local Area Network) 5. The LAN 5 is connected to a WAN (Wide Area Network: for example, the Internet) 7 via a router 6, and the PC 1 can communicate with the server 3 via the WAN 7.

  Further, the server 3 has a function of distributing firmware for the printer 2, and the firmware of the printer 2 to be distributed is stored in the storage unit 4 of the server 3 in association with the version information. ing.

  The PC 1A includes a control unit 11, a storage unit 12, an input unit 13 that can input various types of information by a user operation, a display unit 14 for displaying various types of information, a network interface 15, and the like.

  The control unit 11 includes hardware such as a CPU, RAM, and ROM, and software such as an OS (Operating System) and applications. As the application, a status monitor 11A and the like function.

  The status monitor 11A periodically acquires status information related to the printer 2 such as the operation status, trouble status, and usage status of the printer 2 from the printer 2, and outputs the status information to the display unit 14 to notify the user. In accordance with a request from the printer 2, the latest firmware of the printer 2 is acquired from the server 3, and a firmware providing process for providing the acquired firmware to the printer 2 is executed.

  The storage unit 12 is configured by a large-capacity hard disk device or a non-volatile memory. The storage unit 12 has relatively large size data or data that is not to be lost even when the power supply is cut off. Used when memorizing. In the present embodiment, the storage unit 12 stores the firmware of the printer 2 acquired (received) from the server 3 by the PC 1A.

  In FIG. 1, only the internal configuration of the PC 1A is illustrated, but the internal configurations of the other PCs 1B to 1E are the same as those of the PC 1A. This also applies to the drawings described later.

  The printer 2 performs printing on output paper in accordance with a print command transmitted from the PCs 1A to 1E. The printer 2 includes a control unit 21, a storage unit 22, an operation unit 23, a display unit 24, and a network interface 25. And a printing unit 26 and the like.

  The storage unit 22 is configured by a non-volatile memory that can retain data even when power supply is interrupted. The storage unit 22 includes firmware for controlling the hardware included in the printer 2, A monitoring table that stores information related to the firmware and information for monitoring the PCs 1A to 1E that can communicate with the printer 2 is stored.

The information related to firmware is information such as the type of firmware and firmware version information.
The monitoring table stores information for monitoring the PCs 1A to 1E that can communicate with the printer 2, and as shown in FIG. 2, the monitoring table includes host information relating to the PCs 1A to 1E that can communicate with the printer 2. (In this embodiment, the IP address, port, protocol, etc.) and the last access time when the PCs 1A to 1E last accessed the printer 2 are associated with each other. The last access time is the time when the printer 2 receives a status request command (described later) sent from the PCs 1A to 1E, and is indicated by the time since the printer 2 was supplied with power.

  The control unit 21 is configured by a microcomputer including a CPU, RAM, ROM, and the like. The RAM serves as various temporary storage areas, and the firmware stored in the storage unit 22 is copied. The CPU performs the following control in accordance with the copied firmware program.

  When receiving a status request command indicating that the printer 2 requests status information from the PCs 1A to 1E, the control unit 21 sets the reception time as the last access time of the PCs 1A to 1E that transmitted the status information command. Is stored in the monitoring table in association with the host information of the PCs 1A to 1E that have transmitted. And the control part 21 transmits the status information of the printer 2 with respect to PC1A-1E which transmitted status request instruction | command.

  In addition, the control unit 21 periodically performs a registration deletion process of deleting, from the monitoring table, information of the PCs 1A to 1E that has passed 30 seconds from the last access time among the PCs 1A to 1E stored (registered) in the monitoring table. (In this embodiment, every 10 seconds).

  Further, the control unit 21 inquires about whether or not the printer 2 is permitted to update the firmware, and updates the firmware of the printer 2 itself to the latest firmware when permission is obtained from all the PCs 1A to 1E. Perform update processing.

2. Characteristic operation of network system 2.1. Characteristic operation of the printer 2.1.1. Update Process FIG. 3 is a flowchart showing an update process executed by the control unit 21 of the printer 2, and this process is executed periodically (once in this embodiment once a month).

  When the control unit 21 starts the update process shown in FIG. 3, as shown in FIG. 3, first, in S <b> 110, the standby state is maintained until the print process currently being continued by the printer 2 is completed. .

  When the ongoing print processing is completed, in S120, an agent that selects one PC as a firmware providing source (agent) from the PCs 1A to 1E registered in the monitoring table. A selection process is performed.

  Note that the PC that provides the firmware is a PC that acquires the firmware of the printer 2 via the server 3 and provides the acquired firmware to the printer 2. In addition, the agent selection process is a process of performing a process of randomly selecting one of the PCs 1A to 1E stored in the monitoring table (FIG. 2). In the following description, the case where the printer 2 selects the PC 1A in the agent selection process will be described as an example.

  Subsequently, in S130, a firmware request command indicating requesting the latest firmware is used to inquire to the PC 1A selected in the agent selection process whether or not to accept that this PC 1A becomes an agent. An agent availability request command is transmitted.

  In S140, a response signal transmitted from the PC 1A as a response to the agent availability request command is waited until received by the printer 2, and when this response signal is received, it is received in the process of S140. It is determined whether or not the response signal indicates that the PC 1A consents to be an agent (S150).

  In S150, it is determined that the response signal does not indicate that the PC 1A accepts to be an agent, in other words, the response signal indicates that the PC 1A does not agree to be an agent. If it is determined (S150: NO), it is determined whether there are other agent candidates in the PCs 1A to 1E registered in the monitoring table (S160).

  To explain with a specific example, when it is determined in S150 that the response signal does not indicate that the PC 1A accepts to be an agent (S150: NO), in S160, this time in the agent selection process. Since the selected PC 1A does not become an agent, it is determined whether there is a PC other than the PC 1A among the PCs 1A to 1E registered in the monitoring table.

  If it is determined in S160 that there is another agent candidate (S160: YES), one PC is selected from the PCs 1B to 1E other than the already selected PC (PC1A in this case). The agent selection process to be selected is executed (S120). If it is determined that there is no other agent candidate (S160: NO), the update process shown in FIG. 3 is terminated.

  If it is determined in S150 that the response signal indicates that the PC 1A consents to be an agent (S150: YES), is the printer 2 permitted to update the firmware? An update availability request command for inquiring about whether or not is sent to all the PCs 1A to 1E (S170).

  Subsequently, in S180, the printer 2 waits until a response to the update permission / inhibition request command is received from all the PCs 1A to 1E, and in S190, the printer 2 is operated by all the PCs 1A to 1E based on the response result. It is determined whether or not firmware update is permitted.

  In S190, the printer 2 is not permitted to update the firmware by all the PCs 1A to 1E (in other words, the printer 2 is refused to update the firmware by at least one PC). (S190: NO), after waiting for one hour in the subsequent S200, the process proceeds to S110.

  On the other hand, if it is determined in S190 that the printer 2 is permitted to update the firmware by all the PCs 1A to 1E (S190: YES), it is selected in the agent selection process in S210. When the firmware is acquired from the PC 1A and the acquired firmware is updated (overwritten) as the latest firmware of the printer 2, the update process illustrated in FIG.

  If the version of the firmware currently possessed by the printer 2 is already the latest, the printer 2 does not acquire the firmware from the PC 1A selected in the agent selection process in S210. The update process shown in FIG.

  Although omitted for simplification of description, a timeout is appropriately set in the standby processing of S140 and S180, and the processing proceeds to the next when the timeout occurs. For this reason, the update process is not interrupted even if the printer 2 cannot receive the response signal due to the sudden shutdown process of the PCs 1A to 1E.

2.2. Characteristic operation of PC 2.2.1. FIG. 4 is a flowchart of a response process for the agent availability request command. The response process shown in FIG. 4 is a process executed by the status monitor 11A (strictly speaking, the control unit 11 of the PC 1A functioning as the status monitor 11A) when the PC 1A receives an agent availability request command from the printer 2. is there. The agent availability request command is transmitted in S130 (see FIG. 3) in the printer 2.

  When the control unit 11 of the PC 1A starts the process shown in FIG. 4, first, in S310, the usage status of the PC 1A itself is investigated, and based on the result of the investigation, whether or not the PC 1A itself becomes an agent is selected. Agent availability selection processing is executed.

  In this embodiment, in S310, as the usage status, the power state of the PC 1A, the communication speed and network usage rate of the network line of the PC 1A, the usage rate of the CPU, etc. are investigated. As a result, when the PC 1A is not suitable as an agent, such as when the PC 1A is shut down, when there is no remaining network communication, or when the CPU usage rate is a predetermined value (eg, 50%) or more. , Choose not to be an agent.

  When the processing of S310 ends, in S320, it is determined which is the result of the agent availability selection processing (processing of S310) (whether PC1A itself becomes an agent).

  If it is determined in S320 that the PC 1A itself is an agent (S320: YES), a response signal indicating that the PC 1A consents to be an agent is transmitted to the printer 2 (S330). The process shown in FIG. 4 ends.

  On the other hand, when it is determined in S320 that the PC 1A itself does not become an agent (S320: NO), a response signal indicating that the PC 1A does not consent to become an agent is transmitted to the printer 2 (S340). ), The process shown in FIG. This response signal is received in S140 (see FIG. 3) of the printer 2.

2.2.2. Response Process for Update Availability Request Command FIG. 5 is a flowchart of a response process for the update availability request command. The update availability request command is transmitted in S170 (see FIG. 3) of the printer 2, and the response process shown in FIG. 5 is performed when the PCs 1A to 1E receive the update availability request command from the printer 2. This process is executed by the control unit 11 of each PC.

  When the control unit 11 of the PC 1A starts the process shown in FIG. 5, first, in S410, the print command (print job) for the printer 2 stored in the storage unit 12 of the PC 1A is checked.

Subsequently, in S420, based on the investigation result in S410, it is determined whether or not the time-designated print job for the printer 2 is to be performed within the corresponding time.
If it is determined in S420 that the time-designated print job for the printer 2 is performed within the corresponding time (S420: YES), the printer 2 is permitted to update the firmware. A response signal indicating not to be sent is transmitted to the printer 2 (S430), and the process shown in FIG.

  On the other hand, if it is determined in S420 that the time-designated print job for the printer 2 is not performed within the corresponding time (S420: NO), the printer stored in the storage unit 12 of the PC 1A. It is determined whether there is a print job in which the print priority is set to a predetermined value or higher among the print jobs for 2 (S440). Note that the priority order can be set by the user of the PC 1A.

  If it is determined in S440 that there is a print job in which the print priority is set to a predetermined value or higher (S440: YES), the process proceeds to S430, and conversely, the print priority is set. If it is determined that there is no print job set to a predetermined value or more (S440: NO), the process proceeds to S450.

  In S450, it is determined whether or not the PC 1A is in a sleep state or being logged off. If it is determined in S450 that the PC 1A is in the sleep state or being logged off (S450: YES), a response signal indicating that the printer 2 is permitted to update the firmware is sent to the printer 2. In step S490, the process shown in FIG. 5 ends.

  On the other hand, if it is determined in S450 that the PC 1A is not in the sleep state and is not logged off (logged in) (S450: NO), the user logged in to the PC 1A has specific authority. It is determined whether or not (S460).

  If it is determined in S460 that the logged-in user does not have specific authority (S460: NO), the process proceeds to S490, and conversely, the logged-in user has specific authority. If it is determined that the process is being performed (S460: YES), the process proceeds to S470.

  In S470, a selection dialog (not shown) is displayed on the display unit 14 for allowing the user who is logged in to the PC 1A to select whether or not the printer 2 is allowed to update the firmware.

  Subsequently, in S480, in the selection dialog displayed in S470, it is determined whether or not the user has selected that the printer 2 is permitted to update the firmware.

  If it is determined in S480 that the update is not selected by the user (S480: NO), the process proceeds to S430, and conversely, the update is selected by the user. If it is determined that the process has been performed (S480: YES), the process proceeds to S490.

3. Features of Network System According to this Embodiment As described above, the printer 2 according to this embodiment transmits an update enable / disable request command to all the PCs 1A to 1E, and the PCs 1A to 1E send responses to this request command. Transmit to the printer 2. The printer 2 updates the firmware when the printer 2 is permitted to update the firmware by all the PCs 1A to 1E based on the response results from the PCs 1A to 1E.

  That is, the printer 2 does not actively update the firmware at a timing that is convenient for the printer 2, but has received an update permission request from all of the PCs 1 </ b> A to 1 </ b> E that have received the update permission request command from the printer 2. Then, update the firmware.

  For this reason, it is possible to reduce the possibility that an operation request cannot be received from the PCs 1A to 1E to the printer 2 during the firmware update. Therefore, the printer 2 can update the firmware at an appropriate timing.

  In the present embodiment, the update permission / rejection request command is repeatedly transmitted until the printer 2 is permitted to update the firmware by all the PCs 1A to 1E that have received the update permission / rejection request command. If all of these PCs 1A to 1E permit the update, the printer 2 can update immediately.

  In the present embodiment, since the PCs 1A to 1E that have received the update request command transmit a response to the command to the printer 2, the printer 2 updates the firmware based on the response result. You can decide whether or not.

  Further, in this embodiment, when the PCs 1A to 1E hold time-designated print jobs or high-priority print jobs, the update is not permitted. Therefore, during the firmware update, the PCs 1A to 1E transfer to the printer 2. On the other hand, it is possible to reliably reduce the possibility that an operation request that is urgently transmitted cannot be accepted.

  Further, in the present embodiment, in the selection dialog displayed on the display units 14 of the PCs 1A to 1E, when the printer 2 is selected by the user to permit the firmware update, the firmware update is permitted. The printer 2 can update the firmware at a timing desired by the user.

4). Correspondence between Invention Specific Items and Embodiments In this embodiment, the printer 2 corresponds to the peripheral device described in the claims, and the storage units 12 of the PCs 1A to 1E are the storage devices described in the claims. And the processing of S210 corresponds to the updating means described in the claims.

  Further, the processing of S170 corresponds to the inquiry means described in the claims, the processing of S420, S440 to S460, S480 corresponds to the update permission determination means described in the claims, and S430 and S490 The processing corresponds to a determination result notifying unit described in the claims.

(Second Embodiment)
In the above embodiment, when it is determined in the update process executed by the printer 2 (see FIG. 2) that the printer 2 is not permitted to update the firmware by all the PCs 1A to 1E (S190: NO). However, in this embodiment, the apparatus waits for the waiting time set on the PC 1A to 1E side.

  Hereinafter, the response process and update process for the update permission / inhibition request command of the present embodiment will be described with reference to FIGS. 6 and 7. In the second embodiment, the same components as those in the first embodiment are denoted by the same reference numerals, and the same processing contents are denoted by the same step numbers, and thus detailed description thereof is omitted. This also applies to third and fourth embodiments described later.

  FIG. 6 is a flowchart of a response process to the update availability request command according to the present embodiment. This response process is performed when the PC 1A receives the update availability request command from the printer 2 as in FIG. 5 described above. 11 is executed.

  As shown in FIG. 6, the response process for the update permission / rejection request command of the present embodiment is compared with the response process for the update permission / rejection request command of the first embodiment before sending a response signal indicating that the update is not permitted. The difference is that the necessary waiting time is set in the PC 1A in S425 (before the processing of S430 is executed).

  Specifically, in S425, when it is determined that there is a print job in the process of S420 or S440, the time required for the print job to be executed by the printer 2 is estimated, and the estimated time Is multiplied by the number of print jobs (= [estimated time] × [number of print jobs]) is set as the waiting time. The estimated time is calculated based on the number of printed sheets included in one print job, for example.

  In S480, the waiting time can be input by the user in the selection dialog displayed on the display unit 14 in the process of S470. In S480, it is determined that the user has selected to permit the update. If this is the case (S480: YES), in S425, the time input by the user is set as the standby time.

  When the standby time is set in S425, in the subsequent S430, the standby time set in S425 is sent to the printer 2 together with a response signal indicating that the printer 2 is not permitted to update the firmware. Sent.

Next, FIG. 7 is a flowchart of the update process of this embodiment, and this process is periodically executed by the control unit 21 of the printer 2 as in the update process of FIG. 3 described above.
As shown in FIG. 7, in the update process of the present embodiment, the printer 2 is not permitted to update the firmware by all the PCs 1A to 1E in S190, as compared with the first embodiment. When the determination is made (S190: NO), the difference is that the process waits for the waiting time received together with the response (response signal) to the update availability request command in S195. Here, in S195, when the standby time is received from the plurality of PCs 1A to 1E, the standby time is set to be the largest of the plurality of standby times. Then, when waiting for the waiting time set by the PCs 1A to 1E in S195, the process returns to S110.

  As described above, in the present embodiment, in addition to the effects of the first embodiment, the printer 2 performs the PC1 to 1E after the standby time set by the PC1A to 1E having received the update permission / prohibition request command has elapsed. On the other hand, since the update availability request command is transmitted again, it is not necessary for the printer 2 to wastefully transmit the update availability request command to the PCs 1A to 1E.

In the present embodiment, the process of S425 corresponds to the estimation means described in the claims.
(Third embodiment)
Compared with the first and second embodiments, the present embodiment transmits an update availability request command to the PCs selected by the printer 2 among all the PCs 1A to 1E, an agent availability request command, and The difference is that the update permission / inhibition request command is performed in one process.

Hereinafter, the present embodiment will be described with reference to FIGS. 8 and 9.
FIG. 8 is a flowchart of the update process of the third embodiment, and this process is periodically executed by the control unit 21 of the printer 2 as in the first embodiment.

  When the update process shown in FIG. 8 is started, first, in S510, a transmission destination list for specifying the transmission destination of the agent availability request command and the update availability request command is read from the storage unit 12. In this embodiment, the transmission destination list is made up of information that can identify the PC such as the IP address and PC name of the PC, and this transmission destination list is preset by the user.

  Subsequently, in S520, a PC that is a transmission destination of the agent availability request command and the update availability request command is selected based on the transmission destination list and the monitoring table. More specifically, in S520, a PC registered in the transmission destination list among the PCs currently monitored by the printer 2 is selected as a transmission destination PC based on the transmission destination list and the monitoring table.

  In S530, the agent availability request command and the update availability request command are transmitted to the PC selected in S520, and in subsequent S540, responses to the update availability request command are sent from all the PCs selected in S520. It waits until it is received by the printer 2.

  Subsequently, in S550, based on the response result received in S540, it is determined whether or not the printer 2 is permitted to update the firmware by all the PCs selected in S520.

  If it is determined in S550 that the printer 2 is not permitted to update the firmware by all the PCs selected in S520 (S550: NO), the process waits for a predetermined time in S560. After that, the process proceeds to S510.

  On the other hand, if it is determined in S550 that the printer 2 is permitted to update the firmware by all the PCs selected in S520 (S550: YES), the response result received in S540 is displayed. Based on this, it is determined whether there is a PC permitted to become an agent (S570).

  If it is determined in S570 that there is no PC permitted to become an agent (S570: NO), the process proceeds to S560, and conversely, there is a PC permitted to become an agent. If it is determined (S570: YES), one PC is selected as an agent from the PCs permitted to become agents (S580).

  In S590, the firmware is acquired from the PC selected in S580, and the acquired firmware is updated (overwritten) as the latest firmware of the printer 2, whereby the update process illustrated in FIG. .

  Next, FIG. 9 is a flowchart of a response process to the agent availability request command and the update availability request command according to the third embodiment. This process is performed when the PC 1A receives the agent availability request command and the update availability request command. It is executed by the control unit 11 of the PC 1A.

  When the response process shown in FIG. 9 is started, first, in S610, it is investigated whether or not the PC 1A permits the printer 2 to update the firmware. More specifically, in S610, the response process (specifically, S410, S420, S440 to S480) shown in FIG. 5 of the first embodiment is performed.

Subsequently, in S620, it is determined whether the PC 1A permits the printer 2 to update the firmware based on the investigation result in S610.
If it is determined in S620 that the update is not permitted (S620: NO), the printer 2 is not permitted to update the firmware, and the PC 1A is not permitted to act as an agent. A response signal is transmitted to the printer 2 (S630), and the process shown in FIG. 9 ends.

  On the other hand, when it is determined in S620 that the update is permitted (S620: YES), the usage status of the PC 1A itself is investigated, and whether or not the PC 1A itself becomes an agent is selected based on the survey result. An agent availability selection process is executed (S640). Note that the processing content of S640 is the same as the agent availability selection processing (S310 of FIG. 4) of the first embodiment described above.

Subsequently, in S650, it is determined which is the result of the agent availability selection process (whether the PC 1A itself becomes an agent).
If it is determined in S650 that the PC 1A itself does not become an agent (S650: NO), the printer 2 is permitted to update the firmware, and the PC 1A is permitted to become the agent. A response signal indicating that it is not to be transmitted is transmitted to the printer 2 (S660), and the processing shown in FIG.

  On the other hand, if it is determined in S650 that the PC 1A itself is an agent (S650: YES), the printer 2 is permitted to update the firmware, and the PC 1A is accepted to be an agent. Is sent to the printer 2 (S670).

  In S680, it is determined whether there is a firmware request from the printer 2 within a specified time (for example, 2 minutes). If it is determined that there is no firmware request (S680: NO), FIG. 9 shows. The process ends. Note that when the printer 2 selects a PC other than the PC 1A as an agent in the process of S580 (see FIG. 8), or the PC 2 other than the PC 1A responds that the update is not permitted in the process of S630, the printer 2 If NO is determined in the process of S550 (see FIG. 8), no firmware request is transmitted from the printer 2 to the PC 1A.

  On the other hand, if it is determined in S680 that there is a firmware request (S680: YES), the latest firmware of the printer 2 is acquired from the server 3 in accordance with the request from the printer 2, and the acquired firmware is acquired from the printer 2. The firmware providing process to be provided is executed (S690), and the process shown in FIG. 9 ends. When the printer 2 selects the PC 1A as an agent in the process of S580, a firmware request is transmitted from the printer 2 to the PC 1A.

  As described above, in the present embodiment, in addition to the effect of the first embodiment, an update permission request command is transmitted to the PCs selected in S520 instead of all the PCs 1A to 1E on the LAN 5. For this reason, for example, by removing the PC 2 whose use frequency of the printer 2 is extremely low from the transmission destination of the request command, the update permission request command is transmitted (inquiry) only to the computer suitable for the transmission destination of the request command. It can be carried out. Therefore, it is possible to make an inquiry efficiently.

  Further, the PCs 1A to 1E of the present embodiment simultaneously notify the printer 2 of the determination result as to whether or not to become an agent and the determination result as to whether or not to permit the update. On the other hand, the information of PC1A-1E can be notified efficiently.

  In the present embodiment, the process of S590 corresponds to the update means described in the claims, S530 corresponds to the inquiry means described in the claims, and S620 is described in the claims. This corresponds to the update permission determination means.

  Further, the processes of S630, S660, and S670 correspond to the determination result notifying unit described in the claims, and the process of S650 corresponds to the providing source determining unit described in the claims.

(Fourth embodiment)
The printer 2 of the first to third embodiments acquires firmware from the server 3 via the PCs 1A to 1E. In the present embodiment, firmware is directly acquired from the server 3 without passing through the PCs 1A to 1E. Have been to.

  Further, in the present embodiment, when it is necessary to update the firmware urgently, the firmware is updated without obtaining the update permission for the PCs 1A to 1E.

  More specifically, the firmware of the printer 2 to be distributed is stored in the storage unit 4 of the server 3 in association with the version information and the urgent level information indicating the urgency level. In the update process, if the server 3 has firmware with high urgency, the firmware is updated without obtaining the update permission for the PCs 1A to 1E.

  Hereinafter, update processing executed by the control unit 21 of the printer 2 of the present embodiment will be described with reference to FIG. FIG. 10 is a flowchart of the update process according to the fourth embodiment, and this process is periodically executed as in the first embodiment.

  When the updating process shown in FIG. 10 is started by the control unit 21 of the printer 2, first, in S810, it is determined whether or not a pending flag indicating that the firmware update is suspended is set.

  If it is determined in S810 that the pending flag is set (S810: YES), the process proceeds to S170. Conversely, if it is determined that the pending flag is not set. (S810: NO), the process proceeds to S815. This pending flag is reset when update processing is executed when the printer 2 is initially activated.

  In S815, the firmware version information and urgency information of the printer 2 stored in the storage unit 4 of the server 3 are acquired. In subsequent S830, the version information acquired in S815 is stored in the storage unit 22 of the printer 2. It is determined whether or not it is newer than the firmware version information stored in.

  If it is determined in S830 that the version information acquired in S815 is not newer than the firmware version information stored in the storage unit 22 of the printer 2 (S830: NO), the firmware is updated. 10 is determined to be unnecessary, and the processing of FIG. 10 ends.

On the other hand, in S830, it is determined whether the urgency level is higher than the normal state based on the urgency level information acquired from the server 3 (S835).
If it is determined in S835 that the degree of urgency is high (S835: YES), the firmware is updated without executing the processes of S170 to S190 (S210). If it is determined that there is no update (S835: NO), an update availability request command is transmitted to all the PCs 1A to 1E (S170). The processes from S170 to S190 are the same as those in FIG. Further, the PCs 1A to 1E perform the same processing as in FIG. 5 in response to the update permission / inhibition request command transmitted in S170.

  When it is determined in S190 that the printer 2 is not permitted to update the firmware by all the PCs 1A to 1E (S190: NO), the pending flag is set (S840), and FIG. This process ends. In this case, when the next update process of FIG. 10 is executed, YES is determined in S810, and the processes of S815, S830, and S835 are skipped.

  On the other hand, if it is determined in S190 that the printer 2 is permitted to update the firmware by all the PCs 1A to 1E (S190: YES), the firmware is acquired from the server 3 in S210. The acquired firmware is updated (overwritten) as the latest firmware of the printer 2 (S210), and the process proceeds to S850. In S850, the pending flag is reset, and the process in FIG. 10 ends.

  As described above, in the present embodiment, in addition to the effect of the first embodiment, when the emergency level information is acquired, the firmware is updated without transmitting the update availability request command. When there is an urgent update (for example, correction of a serious failure such as failure or security), the firmware can be updated immediately. In the present embodiment, the storage unit 4 of the server 3 corresponds to the storage device described in the claims, and the process of S835 corresponds to the urgency information acquisition unit described in the claims.

(Other embodiments)
The present invention is not limited to the above-described embodiment as long as it matches the gist of the invention described in the claims.

  In the above embodiment, the printer 2 is described as an example of the peripheral device. However, the present invention is not limited to this, and the peripheral device can communicate with other devices via a network. Any device can be used as long as the device needs to be updated. For example, the peripheral device may be a hard disk drive that can be connected to a network, a multifunction peripheral, a FAX machine, or the like.

DESCRIPTION OF SYMBOLS 1A-1E ... Personal computer (PC), 2 ... Printer, 3 ... Server, 4 ... Memory | storage part, 5 ... LAN, 6 ... Router, 11 ... Control part, 11A ... Status monitor, 12 ... Memory | storage part, 13 ... Input part , 14 ... display unit, 15 ... network interface, 21 ... control unit, 22 ... storage unit, 23 ... operation unit, 24 ... display unit, 25 ... network interface, 26 ... printing unit.

Claims (9)

A peripheral device that receives an operation request transmitted from one or more computers and performs an operation according to the operation request,
Update means for downloading the firmware from a storage device that stores the latest firmware to be installed in the peripheral device, and updating its own firmware to the firmware downloaded from the storage device;
Inquiry means for inquiring whether or not the peripheral device is permitted to update the firmware to a computer determined according to a situation of accessing itself ,
The peripheral device, wherein the update means updates the firmware when the peripheral device is permitted to update the firmware by all computers inquired by the inquiry means. The inquiry means makes an inquiry to the computer again when the peripheral device is not permitted to update the firmware by at least one of the inquired computers. Item 2. The peripheral device according to Item 1. The peripheral device according to claim 2, wherein the inquiry unit makes an inquiry to the computer again after the re-transmission time specified by the inquired computer has elapsed. Urgent information acquisition means for acquiring urgent information indicating the urgency of the update in the firmware stored in the storage device,
The inquiry means does not make an inquiry to the computer when the urgency information acquired by the urgency information acquisition means indicates high urgency,
4. The update unit according to claim 1 , wherein the update unit updates the firmware when the urgency level information acquired by the urgency level information acquisition unit indicates high urgency level . The peripheral device according to any one of the above.   A computer capable of making an operation request to a peripheral device and causing the peripheral device to perform an operation according to the operation request.
  When the peripheral device receives an inquiry as to whether or not the peripheral device is permitted to update the firmware installed in the peripheral device, the peripheral device is permitted to update the firmware. Update permission judging means for judging whether or not,
  A determination result notifying unit for notifying the peripheral device of a determination result by the update permission determining unit; and
  When the update permission determination means determines that the peripheral device does not permit the firmware update, the re-transmission time during which the peripheral device should make an inquiry to the computer again based on the operating state of the computer Guessing means to guess,
Function as
  The determination result notifying unit notifies the peripheral device of the estimation result by the estimation unit together with the determination result by the update permission determination unit. A program for operating a computer capable of making an operation request to a peripheral device and causing the peripheral device to perform an operation corresponding to the operation request, the computer comprising:
When the peripheral device receives an inquiry as to whether or not the peripheral device is permitted to update the firmware installed in the peripheral device, the peripheral device is permitted to update the firmware. Update permission judging means for judging whether or not ,
A determination result notifying unit for notifying the peripheral device of a determination result by the update permission determining unit ; and
When the computer in which the program is installed provides the firmware to the peripheral device, the computer receives an inquiry from the peripheral device as to whether or not the peripheral device is permitted to update the firmware. A determination unit for determining whether or not to permit providing a source of the firmware of the peripheral device,
Function as
The determination result notification means, the result with the determination by said update permission determining means, the determination result of the providing source determination means, program characterized that you notice to the peripheral device. The program according to claim 5 or 6, wherein the update permission determining means determines that the update is not permitted when the computer holds an operation request to the peripheral device. Whether or not the update permission determination means permits the peripheral device to update the firmware based on information input by a user via an input means capable of inputting information to the computer. The program according to any one of claims 5 to 7 , wherein the program is determined.   A network system having one or more computers and a peripheral device that receives an operation request transmitted from the computer and performs an operation according to the operation request,
  Update means provided in the peripheral device, for downloading the firmware from a storage device for storing the latest firmware to be installed in the peripheral device, and updating its own firmware to the firmware downloaded from the storage device;
  Inquiry means for inquiring whether or not the peripheral device is permitted to update the firmware to a computer provided in the peripheral device and determined according to a situation of accessing the peripheral device;
  An update permission determination means for determining whether to permit the peripheral device to update the firmware when receiving an inquiry from the inquiry means provided in the computer;
  A determination result notifying unit provided in the computer for notifying the peripheral device of a determination result by the update permission determining unit;
  The updating unit updates the firmware when receiving a notification from the determination result notifying unit of all computers inquired by the inquiry unit that the peripheral device permits the updating of the firmware. about
A network system characterized by

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