JP6507944B2 - Software writing jig, software writing system, and control method for software writing jig - Google Patents

Description

  The present invention relates to an electronic component mounted on a substrate, for example, a software writing jig for writing software in a memory of a CPU, a software writing system, and a control method of the software writing jig.

  A software writing system for writing software in the memory of a CPU as an electronic component mounted on a board is a working computer storing software to be written in the memory of the CPU, and the software from the working computer And a software writing tool 800 for writing software data output from the software writing tool into the memory as a basic configuration. .

As shown in FIG. 7, the software writing jig 800 has a substrate mounting base 810 for setting a substrate, and a probe holding portion 820 which can be moved vertically in the vertical direction with respect to the substrate mounting base 810. A plurality of (eight in the drawing) contact probes 830 held by the probe holder 820, and a trigger switch 840 for detecting that the contact probe 830 contacts a data communication terminal formed on the substrate. And a control unit (not shown) for outputting a write start trigger signal to the work computer when the trigger switch 840 is turned on.
There are various kinds of software writing jigs, but the software writing jig 800 in which the probe holding unit 820 can move in the vertical direction with respect to the substrate installation base 810 is It is called a press mold.
Further, when receiving the write start trigger signal, the work computer outputs the stored software data to a software writing tool. Also, the software writing tool having received the software data writes the software in the memory of the CPU via the contact probe 830 of the software writing jig 800.

Writing to the memory of software CPU is performed with the contact probe 830 in contact with the data communication terminal of the substrate. The contact with the data communication terminal of the contact probe 830 is performed by moving the probe holding unit 820 toward the substrate set on the substrate installation base 810.
On the other hand, the trigger switch 840 is a so-called micro switch and is provided on the side or bottom side (the side in FIG. 7) of the probe holding portion 820, and the substrate on which the contact probe 830 is set on the substrate mounting base 810 The plunger portion of the trigger switch 840 also contacts with the reference surface 811 of the substrate mounting base 810 which is set flush with the substrate, and the pressing operation is performed. When the trigger switch 840 is turned on, the write start trigger signal is output.

  Further, as a software writing jig of this type, there is a "program writing device in electronic device" described in JP-A-11-024915. Also in this "program writing device in the electronic device", as described in paragraph numbers 0018 and 0020 of the specification, "the writing jig 1 has the master ROM 2 storing the control program to be corrected, and the control from the master ROM 2 It consists of a microcomputer 4 that reads program data and transfers it to the television set 7 as serial data, and a start button (switch etc.) 3 that instructs on / off operation of the microcomputer 4 ', The microcomputer 4 reads data from the master ROM 2 in response to the on signal supplied from the button (steps S1 and S2). Next, the microcomputer 4 converts the data read from the master ROM 2 into serial data having a predetermined format, and supplies the serial data to the RCA terminal 6 provided in the television set 7 via the cable 5 (step S3). ) Is configured.

JP-A-11-024915

By the way, although the contact probe and the data communication terminal do not contact correctly, the trigger switch may be turned on. Also, the trigger switch may not be turned on even though the contact probe and the data communication terminal are in accurate contact with each other.
Such a situation occurs, for example, when the mounting position of the trigger switch in the probe holding portion is shifted or the substrate is not correctly set on the substrate mounting table.
In order to avoid such a situation, an adjustment mechanism for adjusting the mounting position of the trigger switch is provided in the probe holder. The structure of this adjustment mechanism is complicated, which is one of the impediments to miniaturizing the software writing jig. Moreover, adjustment of the attachment position of the trigger switch in an adjustment mechanism requires skill. For this reason, it is practically impossible to completely avoid the occurrence of the above-mentioned situation.

  The present invention has been made in view of the above circumstances, and ensures that a write start trigger signal is output when a contact probe and a data communication terminal are in contact with each other, as well as a trigger switch and its adjustment mechanism. It is not necessary to adopt such a complicated and requiring adjustment mechanism, and a software writing jig, a software writing system, and a control method of the software writing jig can be miniaturized. It is intended to be provided.

  The jig for software writing according to the present invention is a software writing jig mounted on a substrate and stored in a working computer for a memory of an electronic component in which an input / output terminal is connected to a data communication terminal formed on the substrate A writing jig for writing software via a software writing tool, the contact probe contacting the data communication terminal, and the plurality of contacts respectively contacting a plurality of ground points formed on the substrate The control unit includes a detection probe, and a control unit that controls writing of software in a memory of the electronic component and detects contact and continuity with a plurality of ground points of the plurality of contact detection probes, and the control unit If it is detected that a plurality of contact detection probes contact and conduct at predetermined predetermined ground points respectively And it outputs the write start trigger signal for outputting the software data in the software writing tool with respect to the working machine in which the software is stored.

  In addition, the system for software writing according to the present invention is a software writing system for writing software in a memory of an electronic component mounted on a substrate and having an input / output terminal connected to a data communication terminal formed on the substrate. A work computer storing software to be written in the memory of the electronic component, a software writing tool for receiving data of the software from the work computer, and a plurality of tools formed on the substrate Software that controls the writing of software to the memory of multiple contact detection probes and electronic components that contact ground points respectively, and a control unit that detects contact and continuity to the corresponding ground points of the multiple contact detection probes And a jig for wear writing, said software The control unit of the loading jig outputs a write start trigger signal to the work computer when it detects that the plurality of contact detection probes are brought into contact with the predetermined ground points and are conducted. When the working computer receives the write start trigger signal, the working computer outputs the software data to the software writing tool, and the software writing tool receives the received software data. The software writing jig outputs the software to the memory of the electronic component through the contact probe.

  Furthermore, the control method of the jig for software writing according to the present invention is a computer for working on a memory of an electronic component mounted on a substrate and having an input / output terminal connected to a data communication terminal formed on the substrate. A control method of a software writing jig for writing stored software via a software writing tool, wherein the control unit is a ground corresponding to a plurality of contact detection probes formed on the substrate. When it is detected that the point has been brought into contact with the point of contact, a write start trigger signal is output to cause the working computer to output the data of the software to the software writing tool.

The jig for software writing according to the present invention outputs the write start trigger signal to the work computer when the plurality of contact detection probes are brought into contact with the corresponding plurality of ground points and conducted. Since it is configured, the write start trigger signal is output only when the contact probe is in contact with the data communication terminal.
Therefore, since the write start trigger signal is not output when the contact probe and the data communication terminal do not contact correctly, software can be reliably written to the memory of the electronic component. There is.
In addition, since it does not require position adjustment like a conventional trigger switch and complicated mechanism for position adjustment can be omitted, it is for writing software used for writing software to the memory of electronic parts The configuration of the jig can be simplified, and the certainty can be enhanced.

FIG. 2 is a schematic perspective view of a software writing jig according to the embodiment of the present invention. FIG. 6 is a schematic plan view of a substrate on which a CPU as an electronic component to which software is written by the software writing jig according to the embodiment of the present invention is mounted. It is a drawing showing a procedure for writing software to a CPU as an electronic component in a system for software writing using a jig for software writing according to an embodiment of the present invention, which jig for software writing In which the substrate is set. It is a drawing showing a procedure for writing software to a CPU as an electronic component in a system for software writing using a jig for software writing according to an embodiment of the present invention, which jig for software writing 10 is a schematic perspective view showing a state in which a contact probe or the like is in contact with a data communication terminal or the like of the substrate set in FIG. FIG. 12A is a diagram showing a procedure for writing software to a CPU as an electronic component in a system for writing software using a jig for writing software according to an embodiment of the present invention, wherein FIG. Figure (B) is a schematic front view showing the substrate set in the wear writing jig, and the figure (B) shows a contact probe etc. contacting the data communication terminal etc. of the substrate set in the software writing jig first 6C is a schematic front view showing a state in which a contact probe or the like is sufficiently in contact with a data communication terminal or the like of the substrate set in the software writing jig. . It is a schematic block diagram of a system for software writing using a jig for software writing concerning an embodiment of the invention. It is a schematic perspective view of the conventional software writing jig of this kind.

  The software writing jig 100 according to the embodiment of the present invention is mounted on a substrate 600, and a memory of the CPU 610 as an electronic component in which an input / output terminal is connected to a data communication terminal 620 formed on the substrate 600. A jig for software writing, which writes software stored in the working computer 200 via the software writing tool 300, and includes six contact probes 110 contacting the data communication terminal 620, and The first touch detection probe 120A and the second touch detection probe 120B contacting the first ground point 630A and the second ground point 630B formed on the substrate 600, and the software for the memory of the CPU 610. Controlling the writing, the first touch detection probe 120A and And a control unit 130 for detecting contact and continuity of the contact detection probe 120B with the first ground point 630A and the second ground point 630B, and the control unit 130 includes the first contact detection probe. If it is detected that 120A contacts the first ground point 630A and the second touch detection probe 120B contacts the second ground point 630B, the software is stored for work. A writing start trigger signal 131 for outputting the software data 210 to the software writing tool 300 is outputted to the computer 200.

  Note that “software” in the present specification is a concept including a program and data other than the program.

First, before describing the software writing jig 100 according to the embodiment of the present invention, a substrate 600 on which a CPU 610 as an electronic component is mounted will be described with reference to FIG.
The substrate 600 is a so-called printed wiring substrate, and in addition to the CPU 610, electronic components 650 such as a semiconductor memory element and various integrated circuits are mounted. The CPU 610 is electrically connected to various electronic components 650 and the like by printed wiring.
Further, among the input and output terminals of the CPU 610, those related to the input and output of software are connected to the data communication terminal 620 formed on the substrate 600.
As shown in FIG. 2, the data communication terminal 620 includes a plurality of (six in the drawing) land portions 621 formed in a line at the edge of the substrate 600 and arranged at predetermined intervals, and the land portions 621 and A wiring pattern portion 622 is connected to the writing output terminal.

Furthermore, on both sides of the land portion 621 of these data communication terminals 620, a first ground point 630A and a second ground point 630B are respectively formed. The first ground point 630A is used as a power supply ground of the software writing jig 100 and a data communication ground of software. The second ground point 630B is a ground dedicated to the detection of the contact of the second contact detection probe 120B of the software writing jig 100 with the substrate 600.
Further, on the outer side, ie, both sides, of the first ground point 630A and the second ground point 630B, guide holes 640, which are through holes cut from the edge, are respectively opened. The guide hole 640 is a portion into which the upper guide pin 163 and the lower guide pin 151 of the software writing jig 100 are fitted.

As described above, at the edge of the substrate 600, the guide hole 640, the first ground point 630A, the lands 621 of the six data communication terminals 620, the second ground point 630B, and the guide holes are shown from the right in FIG. 640 will be arranged in a line.
In addition, four places 660 in FIG. 2 are screw holes for fixation when the board | substrate 600 is integrated in an electronic device. Further, in FIG. 2, for convenience of drawing, a large number of displays of various electronic components are omitted, and a large number of displays of a wiring pattern portion connecting the CPU 610 and each electronic component are omitted.

  The jig 100 for software writing includes six contact probes 110 in contact with the lands 621 of the data communication terminals 620, and the first ground point 630A and the second ground point 630B formed on the substrate 600. The first contact detection probe 120A and the second contact detection probe 120B, which are in contact with each other, and the writing of software in the memory of the CPU 610 are controlled, and the first contact detection probe 120A and the second contact detection probe 120B are controlled. In addition to the control unit 130 for detecting contact and continuity with the first ground point 630A and the second ground point 630B, the substrate installation stand 150 for setting the substrate 600 and the contact with the substrate installation stand 150 Has a probe holder 162 which can be moved apart

  The substrate mounting table 150 is a portion to which the substrate 600 is set, and is set to a shape and a size corresponding to the substrate 600 to be set. The board mounting table 150 does not interfere with the electronic components mounted on the back side of the board 600, and the edge on which the lands 621 and the like of the data communication terminals 620 are formed, and It is adapted to hold only the opposing edges. Therefore, most of the back side of the substrate 600 set on the substrate mounting table 150 floats in the air.

The substrate mounting table 150 can be appropriately replaced according to the shape and size of the substrate 600 to be set.
In such a case, the substrate 600 using the software writing jig 100 has the first ground point 630A and the first ground point 630A on both sides of the land portion 621 of the data communication terminal 620 regardless of the difference in shape and size. Two ground points 630B are formed respectively, and a guide hole 640 which is a through hole cut from the edge is opened outside the first ground point 630A and the second ground point 630B. It is necessary to have a basic configuration in which the intervals are common.

Further, two lower guide pins 151 are provided upright at a portion of the substrate mounting table 150 for holding the substrate 600 and a portion for holding the edge of the data communication terminal 620 where the land portion 621 and the like are formed. ing. The two lower guide pins 151 position the substrate 600 with respect to the substrate mounting table 150.
Therefore, the two lower guide pins 151 are formed with a size and an interval that fit into the two guide holes 640 formed at the edge of the substrate 600. Further, the two lower guide pins 151 are dimensioned such that the upper end thereof is positioned approximately in the middle between the guide holes 640 when fitted into the guide holes 640 of the set substrate 600 (FIG. 3). , FIG. 5 (A)).

The substrate mount 150 is assembled to the base 160. The base portion 160 has a frame portion 161 and a probe holding portion 162 held so as to be vertically movable with respect to the frame portion 161.
The probe holder 162 includes six contact probes 110 arranged in a row, a first contact detection probe 120A and a second contact detection probe 120B arranged on both sides thereof, and both sides thereof. A pair of disposed upper guide pins 163 is set. Of course, these arrangement patterns include lands 621 of six data communication terminals 620 at the edge of the substrate 600, and first ground points 630A and second ground points 630B arranged on both sides thereof. It is the same as a pair of guide holes 640 arranged on both sides.
The probe holder 162 is configured to be locked at that position when it is lowered to the lowest position.

The contact probe 110 held by the probe holding unit 162, and the first contact detection probe 120A and the second contact detection probe 120B are connected to the control unit 130.
In the contact probe 110, the first contact detection probe 120A and the second contact detection probe 120B, the contact portion at the tip end of the pin, the tube into which the contact portion is inserted, and the contact are incorporated in the tube It is comprised from the spring which presses a part toward the outer side, and the thing of the movable type | mold to which the contact part of the front-end | tip is advanced / retracted with a spring is employ | adopted.
In addition, the dimensions of the contact probe 110, the first contact detection probe 120A and the second contact detection probe 120B are such that the contact portion of the tip is the land portion 621, the first ground point 630A and the second ground point 630B first. In the state of contact, the upper guide pin 163 and the lower guide pin 151 do not contact, and when the probe holding portion 162 is further lowered and the upper guide pin 163 and the lower guide pin 151 contact, the contact probe 110 etc. The contact portion of the tip is set so as to be in a state where the spring is compressed by a predetermined amount while contacting the land portion 621 and the like.

  The six contact probes 110 supply power to the CPU 610, output a reset signal for writing timing to the CPU 610, output data of software to be written, and a setting signal Roles such as output ones are assigned respectively. Of course, the arrangement corresponds to the role of the input / output terminal of the CPU 610 mounted on the substrate 600. Further, it is needless to say that the role of each contact probe 110 is appropriately changed according to the CPU 610 to which the software is written. Thus, depending on the type of CPU 610 mounted, roles may be assigned to all six contact probes 110, or only five or less contact probes 110 may be assigned roles.

  In the software writing jig 100, the first contact detection probe 120A is brought into contact with the first ground point 630A so that the second contact detection probe 120B is brought into contact with the second ground point 630B. When the control unit 130 detects that the switch is turned on, the write start trigger signal 131 is output to the work computer 200 described later.

That is, the first contact detection probe 120A is not in contact with the first ground point 630A, the second contact detection probe 120B is not in contact with the second ground point 630B, or at least one of the events is If it has been generated, the output of the write start trigger signal 131 to the working computer 200 is not performed.
If both contact detection probes 120A and 120B are in contact with both ground points 630A and 630B, the contact probe 110 located between the two contact detection probes 120A and 120B corresponds to the land portion of the corresponding data communication terminal 620. Since it is considered that 621 is surely contacted, both the touch detection probes 120A and 120B come into contact with both ground points 630A and 630B so that the output of the write start trigger signal 131 is performed for the first time. It is

The software writing jig 100 configured as described above is combined with the work computer 200 and the software writing tool 300 to constitute a software writing system 1000 as shown in FIG.
The work computer 200 stores software to be written in the memory of the CPU 610. The software writing tool 300 converts the software data 210 received from the work computer 200 into a writable form for the CPU 610 and outputs the data to the software writing jig 100. Do.
Reference numeral 164 in FIG. 6 (also shown in FIG. 4) is a guide rail for guiding the vertical movement of the probe holding portion 162 of the software writing jig 100.

The operation of the above-described software writing jig 100 will be described together with the operation of the software writing system 1000 configured around this.
First, it is set on the substrate installation stand 150 of the software writing jig 100. At this time, the lower guide pin 151 of the substrate mounting table 150 is set so as to be fitted into the guide hole 640 of the substrate 600. When the lower guide pin 151 is fitted into the guide hole 640, as shown in FIG. 3 and FIG. 5A, the six land portions 621 of the substrate 600, the first ground point 630A and the second ground point 630B. Is positioned immediately below the six contact probes 110 of the software writing jig 100, the first contact detection probe 120A, and the second contact detection probe 120B.

In this state, the probe holder 162 is pushed down. First, as shown in FIG. 5B, the first contact detection probe 120A corresponds to the first ground point 630A, and the second contact detection probe 120B corresponds to the land 621 to which the six contact probes 110 correspond respectively. Respectively contact the second ground points 630B. Further, when the probe holding portion 162 is pushed down, the contact portions at the tips of the contact probe 110, the first contact detection probe 120A and the second contact detection probe 120B function as the land portions 621 and the first by the action of the built-in spring. Contacts the ground point 630A and the second ground point 630B with appropriate contact pressure.
Further, as shown in FIG. 4 and FIG. 5C, the upper guide pin 163 is inserted into the lower guide pin 151 in the guide hole 640 simultaneously with the contact by appropriate contact pressure to the land 621 etc. of the contact probe 110 etc. Since the probe holding portion 162 is locked at that position while making contact, excessive pressure contact with the land portion 621 or the like of the contact probe 110 or the like is prevented.

The first contact detection probe 120A contacts the first ground point 630A, and the second contact detection probe 120B contacts the second ground point 630B, and the control unit 130 detects it. Then, the control unit 130 outputs the write start trigger signal 131 to the work computer 200.
As described above, the write start trigger signal 131 is output in this state because the first touch detection probe 120A is at the first ground point 630A and the second touch detection probe 120B is at the second ground point. This is because it is ensured that the contact probes 110 formed in a row side by side with both the contact detection probes 120A and 120B are in contact with the corresponding land portions 621 when the respective contacts 630B are brought into conduction. .
In addition, since the probe holding part 162 in which the contact probe 110 etc. was set is locked in this position as mentioned above, the contact probe 110 etc. continue contacting the corresponding land 621 etc.

The work computer 200 having received the write start trigger signal 131 outputs the stored software data 210 to the software writing tool 300.
Furthermore, the software writing tool 300 that has received the software data 210 outputs the software data 210 to the software writing jig 100, and the control unit 130 of the software writing jig 100. Writes the software to the memory of the CPU 610.

  When the series of operations is completed, the fact is displayed on the display unit provided in the working computer 200 or the software writing jig 100, so that the operator completes the writing of the software to the memory of the CPU 610. Recognize

  In the above description, although software is written to the memory of the CPU 610, the jig 100 for writing software according to the present invention newly adds software to a memory in which nothing is written. It is needless to say that it can be used not only for writing but also for updating or changing the software of the memory of the CPU 610 to which software has already been written.

In the above-mentioned embodiment, although two contact detection probes are used, the first contact detection probe 120A and the second contact detection probe 120B, the present invention is not limited to this.
For example, it is also possible to provide a third touch detection probe. This third contact detection probe is particularly effective in the case where land portions 621 for writing software are not arranged in a line as described above, but randomly arranged.
As shown in FIG. 2, when the lands 621 are arranged in a line, the first contact detection probe 120A and the second contact detection probe 120B located on both sides of the land 621 are the first contact detection probes. When in contact with the ground point 630A and the second ground point 630B, it can be reliably seen that the contact probe 110 is in contact with the corresponding land 621.

However, in the case where the land portions 621 are randomly disposed, even if the first ground point 630A and the second ground point 630B are formed in the land portions 621, the first contact detection probe 120A is formed. Assuming that the second contact detection probe 120B contacts the first ground point 630A and the second contact detection probe 120B contacts the second ground point 630B, the probability that the contact probe 110 reliably contacts the other land portion 621 is the land portion 621. Is lower than when arranged in a row.
In this case, by providing the third contact detection probe and providing the corresponding third ground point, the probability that the contact probe 110 is in accurate contact with the land portion 621 is increased. The more contact detection probes, the higher the probability that all contact probes 110 are in contact with the corresponding lands 621 correctly, but the more contact detection probes, the more complex the structure. Have However, in the case where the lands 621 must be randomly arranged, a method of providing three or more touch detection probes is effective.

  The provision of the three or more contact detection probes is not only in the case where lands 621 are randomly arranged, but also in the case where lands 621 are arranged in an L shape other than the arrangement pattern of one row, for example. It is considered effective.

  In the above-described embodiment, the software writing tool 300 is present separately from the software writing jig 100 and the working computer 200. However, the software writing jig 100 or The configuration incorporated into the work computer 200 is also possible.

DESCRIPTION OF SYMBOLS 100 Jig for software writing 110 Contact probe 120A 1st touch detection probe 120B 2nd touch detection probe 130 Control part 131 Writing start trigger signal 200 Work computer 210 Software data 300 Software writing tool 600 PCB 610 CPU (Electronic Component)
620 data communication terminal 630A first ground point 630B second ground point

Claims (3)

  Software that writes software stored in a working computer to the memory of an electronic component mounted on a board and connected to the data communication terminals formed on the board via a software writing tool Writing jig: writing a software to a memory of an electronic component, a contact probe in contact with the data communication terminal, a plurality of contact detection probes respectively in contact with a plurality of ground points formed on the substrate, and A control unit configured to control and detect contact and continuity with a plurality of ground points of the plurality of contact detection probes, and the control unit is a predetermined ground point defined by the plurality of contact detection probes. If it is detected that it has made contact with the Software write jig and outputs a write start trigger signal for outputting the software data in the software writing tool with respect to computer over.   In a software writing system for writing software in a memory of an electronic component mounted on a substrate and having an input / output terminal connected to a data communication terminal formed on the substrate, software to be written in the memory of the electronic component is stored A working computer, a software writing tool for receiving the software data from the working computer, and memories of a plurality of contact detection probes and electronic parts respectively contacting a plurality of ground points formed on the substrate A software writing jig having a control unit for controlling the writing of software to the control unit and detecting a contact or continuity of each of the plurality of contact detection probes with the corresponding ground point; The control unit of the writing jig includes the plurality of contact detection probes. Outputs a write start trigger signal to the working computer when it detects that the contact with the respectively determined predetermined ground point is conducted, and the working computer receives the write start trigger signal. For example, the software data is output to the software writing tool, and the software writing tool outputs the received software data to the software writing jig, and the software writing is performed. A jig for writing software in a memory of an electronic component through a contact probe.   Software that writes software stored in a working computer to the memory of an electronic component mounted on a board and connected to the data communication terminals formed on the board via a software writing tool In the control method of the writing jig, when the control unit detects that the plurality of contact detection probes are brought into contact with the corresponding ground points formed on the substrate, the control unit sends a signal to the work computer. And outputting a write start trigger signal that causes the software data to be output to the software writing tool.

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