JPS60198622A - Production and transmission system for keyboard discrimination data - Google Patents

Abstract

PURPOSE:To attain plural different types of connection by allocating a key matrix to the 1st matrix for decision of the working state of a key switch and the 2nd matrix for decision of the type of a keyboard and reading these matrices via a common signal line. CONSTITUTION:A key matrix part 1 includes a matrix part 11 for general key switches and a matrix part 12 for jumper wiring which sets the keyboard decision data. A keyboard control part 2 produces and transmits the keyboard decision scan data as well as the working state scan data on the key switch. Then the part 2 scans the part 12 when an initialization signal is supplied from a circuit part 9 and transmits the initialization signal to a communication device via a connector 6, etc. to decide the type of the keyboard. Then the part 11 is scanned for discrimination of the working state of the key switch to produce the key-in data. This data is sent to the communication device.

Description

[Detailed Description of the Invention] [Technical Field] The present invention relates to a keyboard that is widely used as an input device for various communication devices such as information processing devices, and particularly relates to a keyboard that is used to generate data for determining the type of keyboard connected to a communication device. The present invention relates to a keyboard having a sending function.

[Prior art]

Conventional keyboards do not have a function of generating data that allows a communication device to determine the difference in key switch arrangement in its own key switch matrix. therefore,
Basically, communication is limited to one-to-one connection between the keyboard and the communication device. Further, if the keyboards are of the same type, it is possible to communicate with multiple keyboards connected to one communication device.

However, it is impossible to connect keyboards with the same interface and different key switch arrangements to a communication device and communicate with them because the communication device cannot distinguish between different types of keyboards.

In order to solve this problem, when an operator attempts to connect a keyboard of a different type from the currently connected keyboard, a keyboard discrimination switch (delag switch, etc.) provided on the communication device can be connected. It has been proposed to set a state corresponding to the keyboard to be used, and to have this setting state determined by firmware compatible with different types of keyboards provided in the communication device. however,
This requires a complicated state setting operation using a keyboard discrimination switch. Furthermore, although there are devices in which the keyboard discrimination switch in the communication device is replaced with a keyboard, the same troublesome switch operations as described above are still required. Furthermore, if a discrimination signal is present on the interface as output data of the keyboard, an extra data line for the discrimination signal is required, resulting in an increase in the number of terminals of the interface connector and the number of cores of the connecting cable. , it is inevitable that they will become more expensive and larger. Furthermore, if keyboard discrimination data is placed on the data bus, the number of additional parts increases and the number of steps in the program of the micro combiator mounted on the keyboard increases.

[Purpose of the invention]

SUMMARY OF THE INVENTION An object of the present invention is to provide a keyboard discrimination data generation and transmission method that can solve the various problems described above.

[Summary of the invention]

The keyboard discrimination data generation and transmission method according to the present invention is (
The [pXm) first matrix of nXm)jl'-Wtrick@ is assigned to determine the operating state of the key switch arranged corresponding to each intersection of this first matrix, and [
(.n-p) Corresponding lines are commonly connected to a keyboard control unit, and the first matrix receives a scanning signal for determining the operating state of the key switch sent from the keyboard control unit via p input signal lines. and the second matrix receives the scanning signal sent from the keyboard control section through (n-p) input signal lines when the keyboard control section receives the initialization signal, and controls the α The present invention is characterized in that the keyboard discrimination data set in consideration is outputted to the m output signal lines.

[Explanation of Examples]

Next, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a configuration diagram showing an embodiment of a keyboard having functions of generating and transmitting keyboard discrimination data according to the present invention;
FIG. 2 is a detailed configuration diagram of the same embodiment.

First, referring to FIG. 1, the key matrix section 1 consists of a matrix section 11 of general key switches and a matrix section 12 of jumper wiring for setting keyboard discrimination data. The keyboard control section 2 generates and sends keyboard discrimination scan data at the time of keyboard initialization and generates and sends key switch operating state scan data.

The keyboard control unit 2 sends a scan out signal SCN to the signal line 3 to scan the key matrix unit 1, and also sends a return signal RTN to the signal line 4 to read the state of the key matrix unit 1. receive. Also,
The keyboard control section 2 sends the scan result data of the key matrix section to the communication device via the signal line 71, the interface section 5, the signal If3! The initialization signal I is sent to the interface unit 5 via the signal line 81.
Receive NR. Note that the keyboard control section 2 can also receive the initialization signal INR from the initialization circuit section 9.

Next, referring to FIG. 2 which further embodies the keyboard configuration shown in FIG. 12. Since the matrix section 11 has a 10 x 8 XY matrix configuration, 80 key switches are arranged corresponding to each intersection. On the other hand, the matrix section 12 has a 1 x 8 XY matrix configuration. Therefore, the 256 types of keyboard discrimination data can be set using jumper wiring J0 to J7 set in advance. 47 in common.

Return signal lines 40 to 47 are connected to pull-up resistor circuit section 10
and the return signal input terminal pl of the keyboard control section 2
It is connected to o to p17. The inputs 1 to 8 degrees of the matrix section 11 are connected to the output terminals 1 to 10 of the 4-person car 16 output decoder 11 via scanout signal lines 31 to 310, and the inputs is connected to the output terminal O of the decoder 11 via the scan-out signal line 30. Although the output terminals 11 to 15 of the decoder 11 are unused, they can be used as appropriate when expanding the matrix section 11.12. In addition, the input terminals θ to 3 of the decoder 11 are connected to the scan-out signal output terminals 1) 20-p of the keyboard control section 2 via the scan-out signal lines 30' to 33'.
It is connected to 23. The m-board control section 2, which can be configured using a one-chip microcomputer, transmits data regarding the key switch operating state of the matrix section 11 read through return signal lines 40 to 47 and the data sent to the matrix section 12 by jumper wiring. The set keyboard discrimination data is sent to the communication device via eight signal lines (data lines) 71 and 72, the interface section 51, and the connector 6. The keyboard control section 2 is still configured to receive an initialization signal for initializing the keyboard from the communication device or from the initialization circuit section 9 provided in the keyboard via the connector 6, the interface section 52, and the initialization signal lines 81 and 82. It is.

The operation of the keyboard configured in this way is as follows.

In FIG. 2, when the initialization signal is input to the keyboard control section 2, the keyboard control section 2 outputs the output terminal p.
4-bit scan out signal "'o from 23 to p20
ooo" is output to the decoder 11. The decoder 11 outputs a logic level "0" signal to the signal line 30 and logic level "11" signals to the other signal lines 31 to 310 in response to this signal. Therefore, only the scanning of the matrix section 12 is performed, and the return signal lines 40 to 47 corresponding to the outputs to which jumpers have been connected in advance are read into the keyboard control section 2 without being at the lIO'' level. When the jumper wiring of No. 12 is connected only to J., the scan out signal "0" is sent from the keyboard control section 2.
When "000" is output, the return signal on the return signal lines 47 to 40 becomes "11111110", and the negative logic of this "00000001" is output to the keyboard control unit 2.
is read as . The keyboard control section 2 sends this return signal as keyboard discrimination data to the communication device via the interface section 51, connector 6, etc. The communication device can determine the type of keyboard based on the received keyboard determination data. When the sending of the keyboard discrimination data is completed, the keyboard control unit 2 outputs the signal "0001" to the scanout signal lines 33' to 30', and the decoder 11 outputs the signal "0001" to the scanout signal -31.
IO" signal is output. As a result, the operating states of the eight key switches arranged corresponding to the If the loaded operating state is the same as the previous load or the key switch is off,
A signal of '0010' is output to the scan-out signal lines 33' to 30/, and the operating states of the key switches corresponding to the X2 axes of the matrix section 11 are similarly read. In this process, if the key switch reading operation state is different from the previous key switch on, the keyboard control unit 2 identifies this,
Key-in data corresponding to the corresponding key switch is generated and sent to the communication device. The keyboard control section 2 scans the matrix section 11 using an N-key rollover method to cope with double keystrokes of the key switch.

In the above embodiment, a configuration in which jumper wiring is selectively performed at the intersections of the matrix section in order to set keyboard discrimination data has been described, but if a slight increase in the size of the matrix section is allowed, [effects of the invention] As explained above, according to the present invention, the (nxm) key matrix is used to determine the operating state of the key switch.
xm) Assign the first matrix and the ((n”p)xm:l second matrix for determining the type of keyboard, and send the first and second matrix outputs to the keyboard control unit via a signal line common to both. By configuring the system to be loaded into a communication device, it is possible to connect multiple different types of keyboards with different key switch arrangements to a communication device at the same time without making any major changes to the existing keyboard configuration and with an extremely simple configuration. Alternatively, one can be arbitrarily connected and communicated.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing one embodiment of the present invention, and FIG. 2 is a specific block diagram of the same embodiment. '1...Key matrix section, 11...
General key switch matrix section, 12...Jumper wiring matrix section for setting keyboard discrimination data, 2...Keyboard control section, 3.30-39,
310°30'-33'...Scan anide signal line, 4°40-47...Return signal line, 5
, 51.52...Interface section, 6.
...Connector, 71°72.81.82...
...Signal line, 9...Initialization circuit section, 1
0...Pull-up resistor circuit, 11 procedural amendment (
(Voluntary) Commissioner of the Japan Patent Office 1. Indication of the case 1982 Patent Application No. 53726 2゜ Title of the invention Keyboard discrimination data generation and transmission method -
3. Relationship with the case of the person making the amendment Applicant: 5-33-1-4 Shiba, Minato-ku, Tokyo, Agent 5, Subject of amendment (1) “Detailed description of the invention” and “Drawings” in the specification "Brief explanation" column. (2) Drawing 6, contents of correction (1) Page 7, lines 15 to 16, lines 18 and 19, page 8, line 4, page 9, line 4 And on the 5th line, the description "Decoder 11" on the 5th line of page 10 will be corrected to "Decoder 13". (2) The entry "11" on page 12, line 13 will be corrected to "13" 〇(3) The drawing library will be corrected as drawing 2 has not yet been distributed.

Claims (1)

[Claims] The first matrix (pxm) of the (n
n-p) the first matrix receives a scanning signal for determining the operating state of the key switch sent from the keyboard control unit via p input signal lines; The second matrix receives the scanning signal sent from the keyboard controller through (n-p) input signal lines when the keyboard controller receives the initialization signal, A method for generating and transmitting keyboard discrimination data, characterized in that keyboard discrimination data set according to a white trend is outputted to the m output signal lines.