JP3104630B2 - Wireless data communication device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to time division multiplexing (TD).
MA) A wireless data communication device that performs a plurality of types of data communication such as image data and communication data by a transmission / reception method.

[0002]

2. Description of the Related Art Conventionally, this kind of data communication apparatus is provided with an image communication section and a data communication section as disclosed in Japanese Patent Application Laid-Open No. 04-64654. In this data communication device, image communication is performed through the image communication unit under the control of the control unit. Further, data communication through the data communication unit is performed under the control of the control unit. That is, image communication and data communication are processed independently.

As disclosed in Japanese Patent Application Laid-Open No. 04-185027, there is an example in which image data and communication data are multiplexed and transmitted. In this conventional example, multiplexing processing of image data and communication data is performed on the exchange side. The terminal to which the multiplexed signal is supplied generates one image data or communication data while switching and selecting the image data and the communication data, and outputs it to, for example, an image display device or a printing device.

[0004]

The conventional wireless data communication apparatus has the following two drawbacks. (1) Image data is transmitted through an image communication unit, and data communication is performed through a data communication unit.
We are doing that communication. That is, when performing communication through the image communication unit and the data communication unit, it is difficult to perform the simultaneous communication even if the two devices can be operated simultaneously. It is also possible to control the image communication unit and the data communication unit to perform simultaneous communication. However, in this case, a circuit for establishing synchronization and the like is required, and the circuit scale is increased.

(2) The apparatus scale increases. That is,
Since the image communication unit and the data communication unit are provided independently, the device configuration is complicated.

SUMMARY OF THE INVENTION The present invention solves the above-mentioned problems in the prior art, and enables transmission of a plurality of types of data without providing a separate control unit for image communication and data communication. It is possible to avoid an increase in the scale of the device, and to select a transmission path corresponding to a communication application in which a communication line is distinguished by a plurality of types of data (image data, communication data), and to avoid an increase in the line size. A wireless data communication device capable of

[0007]

To achieve the above object, according to the present invention, a plurality of types of data are multiplexed in a wireless data communication apparatus for performing data communication by wireless transmission / reception by time division multiplexing. Wireless transmitting and receiving means for wirelessly transmitting the multiplexed frame signal to the transmission path, and receiving from the transmission path a multiplexed frame signal obtained by multiplexing a plurality of types of data; Multiplex generation / decomposition means for decomposing into individual frame signal units respectively corresponding to a plurality of types of data, or multiplexing individual frame signals respectively corresponding to a plurality of types of data into a communication slot during transmission. It has. Furthermore, the number of individual frame signals during transmission is reduced.
Both, remaining data capacity information, transmission priority, transmission retransmission status
Multiplexing control means for controlling the occupation ratio of communication slots when multiplexing based on various condition information relating to, and a plurality of data transmission control means for controlling conversion of a plurality of types of file data into frame signals. I have. Further, a central processing unit for performing a plurality of types of data processing between the plurality of data transmission control means, when receiving the multiplexed generation / decomposition unit decomposing Separate the frame signal inserted and has a frame identification data, respectively Discriminating transmission for discriminating, sending an individual frame signal from the discrimination content to the corresponding data transmission control means, and discarding the frame signal when discriminating frame identification data not corresponding to the registered content. And a path control unit.

According to a second aspect of the present invention, there is provided a wireless data communication apparatus in which various condition information for controlling the multiplexing by the multiplexing control means is registered in advance, and a condition for transmitting the various condition information to the multiplexing control means is provided. The configuration includes a registration unit.

According to a third aspect of the present invention, in the wireless data communication apparatus, the discriminating transmission path control means registers in advance discriminating information for performing detection processing of frame identification data for the divided individual frame signals. Is transmitted to the discrimination transmission path control means.

[0010] Wireless data communication apparatus of the present invention having such a configuration, at the time of transmission, a plurality of types of data signals, generated to the format of the individual frame signals corresponding to respective data signals, and frame identification Insert (attach) data. The individual frame signals are multiplexed in the communication slot. Then, the multiplexed frame signal is wirelessly transmitted to a target transmission path based on various condition information (remaining data capacity information, transmission priority, transmission retransmission status, and the like).

[0011] During reception, decomposing a plurality of types of data in units of each individual frame signals corresponding respectively multiplexed frame signal obtained by multiplexing a plurality of types of data. The frame identification data inserted into the individual frame signal is determined, and a plurality of types of individual frame signals, for example, screen display, which is data processing corresponding to each of image data and communication data, are determined based on the determination. Done.
When frame identification data that does not correspond to the registered content is determined, the frame signal is discarded.

Accordingly, without particularly providing a separate image communication and data communication processing device enables simultaneous transmission of a plurality of types of data, it becomes possible to avoid the increase of the apparatus size. In addition, multiple communication lines
Since the transmission path is selected in accordance with the communication application distinguished by the seed data, it is possible to avoid an increase in the line scale.

[0013]

Next, an embodiment of a wireless data communication apparatus according to the present invention will be described in detail with reference to the drawings. FIG.
1 is a block diagram illustrating a configuration of a wireless data communication device according to an embodiment of the present invention. The wireless data communication device shown in FIG. 1 includes a central processing unit 1 that performs processing on data to be transmitted and received. The central processing unit 1 performs a process of inputting image data and communication data to be transmitted and a process of displaying image data and communication data at the time of reception on a screen. Further, the wireless data communication device generates the filed image data from the central processing unit 1 at the time of transmission into an individual frame signal format corresponding to the image data, and identifies the image data. And an image data transmission control unit 2 that controls the transmission of individual frames to the central processing unit 1 at the time of reception.

[0014] The wireless data communication system, a file of communication data from the central processing unit 1 at the time of transmission,
A file for generating a frame signal format corresponding to the communication data, inserting frame identification data for identifying the communication data, and controlling a process of transmitting a frame to the central processing unit 1 upon reception. It has a data transmission control unit 3.

Furthermore, the wireless data communication apparatus, a frame signal sent from the image data transmission control unit 2 and the file data transmission control unit 3 multiplexes the time of transmission, and,
A multiplex generation / decomposition unit 4 for decomposing a multiplexed frame signal at the time of reception into units of individual frame signals respectively corresponding to a plurality of types of data is provided. The multiplexing control unit 5 controls the occupation ratio of communication slots when multiplexing based on various condition information (remaining data capacity information, transmission priority, transmission retransmission status, etc.) at the time of transmission. ing.

Further, the wireless data communication apparatus, a communication control unit 6 for controlling radio transmission of the multiplexed generation / decomposition unit 4 is multiplexed by the control of the multiplexing control unit 5 at the time of transmitting the multiplexed frame signal, transmission The multiplexed frame signal is sometimes transmitted to the communication control unit 6.
And a wireless transmission / reception unit 7 for performing wireless transmission under the control of

Further , the wireless data communication device executes a process of detecting frame identification data in individual frame signals divided by the multiplex generation / decomposition unit 4 at the time of reception,
It has a discrimination transmission path control unit 8 for discriminating the detected contents. The determination transmission path control unit 8, when the data frame identification shown in FIG. 2 has been detected, sends information relating to the frame identification data to the image data transmission control unit 2 or the file data transmission control section 3, If the information related to the corresponding frame identification data is not inserted, a process of discarding each frame unit is performed.

Furthermore, the wireless data communication apparatus, when performing detection processing of the frame identification data shown in FIG. 2 for split frame signal multiplexing generation / decomposition unit 4 at the time of reception in the determination transmission path control unit 8 A transmission path control table registration unit 9 in which discrimination information is registered in advance, and a condition registration unit 10 in which various condition information at the time of transmission (remaining data capacity information, transmission priority, transmission retransmission status, etc.) are registered in advance. I have.

FIG . 2 is a diagram showing a format of a frame signal transmitted from the image data transmission control unit 2 and the file data transmission control unit 3. This frame signal is a frame signal of image data or communication data. The format of the frame signal is a header (k octets,
An identification data designation section (x octet) and a remaining data display section), an n-octet data section (image data, communication data) and an end section following the header section.

Next, the operation of this embodiment will be described. FIG. 3 is a diagram for explaining discrimination control for frame identification data. First, the operation at the time of transmission will be described. The central processing unit 1 performs processing on data to be transmitted. That is, processing for inputting image data and communication data transmitted from the central processing unit 1 is performed. The filed image data from the central processing unit 1 is input to the image data transmission control unit 2, where control for converting the image data into a frame signal for performing image communication is performed. Further, control is performed in which the filed communication data (file data) from the central processing unit 1 is converted into a frame signal by the file data transmission control unit 3.

[0021] The image data transmission control unit 2 performs the insertion of generation processing and the frame identification data of the format of the frame signal shown in FIG. 2 for data transmission at the time of this transmission. In addition, the file data transmission control unit 3 performs a frame signal format generation process shown in FIG. 2 for data transmission and inserts frame identification data.

Furthermore, this time of transmission, the image data transmission control unit 2, individual frames (image data, communication data) sent from the file data transmission control unit 3 is input to the multiplexing generation / decomposition unit 4, where To multiplex. Further, the multiplexing control unit 5 based on various condition information at the time of transmission (remaining data capacity information, transmission priority, transmission retransmission status, etc.).
Performs control to apply the frame data to the communication slot. That is, the occupation ratio of the communication slot when multiplexing the individual frame signals at the time of transmission based on various condition information is controlled.

The condition information (remaining data capacity information, transmission priority, transmission retransmission status, etc.) is registered in the condition registration unit 10 in advance. The multiplex generation / decomposition unit 4 sends the multiplexed frame signal (a plurality of types of data including image data and communication data) multiplexed under the control of the multiplex control unit 5 to the communication control unit 6, and the communication control unit Under the control of 6, the wireless transmission / reception unit 7 performs wireless transmission.

In such a transmission operation, discrimination control is performed on the frame identification data shown in FIG. That is, the multiplex generation / decomposition unit performs data detection (data from k octets to x octets) for the header portion of the frame signal shown in FIG. 2 from the output port of the image data transmission control unit 2 or the file data transmission control unit 3. Perform in step 4. Then, a frame signal (image data, communication data) from the identification data (x octets) is identified and sent to the multiplexing control unit 5, where various condition information at the time of transmission (remaining data capacity information, transmission priority order) , Transmission retransmission status, etc.) to control the occupation ratio of communication slots when multiplexing.

[0025] Next, a description will be given of the operation at the time of reception. At the time of reception, the wireless transmission / reception unit 7 receives a multiplexed frame signal obtained by multiplexing image data and communication data (a plurality of types of data) through an antenna, and the multiplexed frame signal is transmitted to the multiplex generation / decomposition unit 4. Are divided in units of individual frame signals. The individual frame signals divided by the multiplex generation / decomposition unit 4 are input to the discrimination transmission path control unit 8, where the detection processing of the frame identification data shown in FIG. 2 is executed, and the detection content is discriminated. I do.

[0026] This determination is made with reference to the information previously registered in the transmission path control table registering unit 9 connected to determine the transmission path control unit 8. By this reference FIG.
If the frame identification data shown in is inserted,
The discrimination transmission path controller 8 sends this information to the image data transmission controller 2 or the file data transmission controller 3. If the corresponding information has not been inserted, the discrimination transmission path control unit 8 executes a process of discarding the individual frame for each unit.

The image data transmission control unit 2 performs multiplex generation /
Image data is extracted from the individual frame signals from the decomposing unit 4 and sent to the central processing unit 1, and the central processing unit 1 executes data processing on the image data. For example, a screen is displayed on a monitor device or the like. The file data transmission control unit 3 extracts file data from the individual frame signal decomposed by the multiplex generation / decomposition unit 4 and
The central processing unit 1 executes data processing on the file data. In this case, for example, a screen is displayed on a monitor device or the like.

In such a receiving operation, the discrimination control for the frame identification data shown in FIG. 3 is performed as in the transmission. Multiplexing / generating the received multiplexed frame signal
The decomposing unit 4 decomposes and detects data (data from k octets to x octets) for the header part of the frame signal shown in FIG. Then, the identification data (x
(Octets) to identify image data and communication data, and transmit individual frame signals (image data and communication data) to the image data transmission control unit 2 and the file data transmission control unit 3 based on the identification.

[0029]

As is apparent from the above description, according to the wireless data communication apparatus of the present invention, a plurality of types of data signals such as image data and communication data are converted into individual frame signals corresponding to the respective data signals. , And insert frame identification data. further,
The multiplexed frame signal is wirelessly transmitted to a target transmission path based on various condition information.

Further, when receiving decomposes the plurality of types of data in units of each individual frame signals corresponding respectively multiplexed frame signal obtained by multiplexing a plurality of kinds of data, and,
Data processing corresponding to each frame signal (image data, communication data) determined by the frame identification data, for example, screen display of image data and communication data is performed. When frame identification data that does not correspond to the registered content is determined, the frame signal is discarded.

[0031] As a result, without especially providing a separate image communication and data communication processing device enables simultaneous transmission of a plurality of types of data, it becomes possible to avoid the increase of the apparatus scale . Further, a transmission path corresponding to a communication purpose in which a communication line is distinguished by a plurality of types of data or the like is selected. Therefore, it is possible to avoid an increase in the circuit scale.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating a configuration of a wireless data communication device according to an embodiment of the present invention.

FIG. 2 is a diagram showing a format of a multiplexed frame signal wirelessly transmitted and received in the embodiment.

FIG. 3 is a diagram illustrating discrimination control for frame identification data in the embodiment.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 central processing unit 2 image data transmission control unit 3 file data transmission control unit 4 multiplex generation / decomposition unit 5 multiplex control unit 6 communication control unit 7 wireless transmission / reception unit 8 discriminative transmission path control unit 9 transmission path control table registration unit 10 Condition registration section

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁷ , DB name) H04J 3/00

Claims (3)

(57) [Claims] A wireless data communication apparatus for performing data communication by wireless transmission / reception by time division multiplexing, wherein a multiplexed frame signal obtained by multiplexing a plurality of types of data is wirelessly transmitted to a transmission path, and the plurality of types of data are transmitted. A wireless transmitting and receiving means for receiving the multiplexed multiplexed frame signal from the transmission path, and decomposing the multiplexed frame signal received by the wireless transmitting and receiving means into individual frame signal units corresponding to a plurality of types of data, or, a multiplexing generating / decomposing means for multiplexing the individual frame signal corresponding to a plurality of types of data in the communication slot during transmission, a separate frame signals at the time of transmission, at least the remaining data volume
Multiplexing control means for controlling the occupation ratio of communication slots when multiplexing based on various condition information relating to amount information, transmission priority, and transmission retransmission status; and control for converting a plurality of types of file data into frame signals. a plurality of data transmission control means for, inserted into separate frame signal and the central processing unit, which is the multiplex generating / decomposing means on reception was decomposed to perform a plurality of types of data processing between the plurality of data transmission control means When the frame identification data is determined, the individual frame signal is transmitted to the corresponding data transmission control means from the determined content, and when the frame identification data not corresponding to the registered content is determined, A radio data communication apparatus, comprising: a discrimination transmission path control unit that performs control for discarding a signal. 2. A condition registering section for preliminarily registering condition information when the multiplexing control means controls multiplexing and transmitting the condition information to the multiplexing control means. 2. The wireless data communication device according to claim 1, wherein: 3. The discrimination transmission path control means registers in advance discrimination information for performing detection processing of frame identification data for the divided individual frame signals, and stores the discrimination information in the discrimination transmission path control means. 3. The wireless data communication device according to claim 1, further comprising a transmission path control table registration unit for transmitting.