JPS5935472B2 - display device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to display devices such as cathode ray tube displays (CRT) and electroluminescence (EL).

In particular, an operator can input arbitrary characters, symbols, figures, etc. from an input device provided on a display device such as a CRT, and display them as they are on a display device such as a CRT.

Generally, a CRT device may display a "table" that includes "product name,""unitprice," and "product code."
Items like this may be displayed.

When displaying such characters, symbols, or figures, it is necessary to store the expected characters in a xeractor generator and output them using character codes, or to use an OCR device, etc. It was read and displayed by this device. Therefore, in the former case, the types of characters are limited, or the memory used as a character generator becomes large.

Moreover, in the latter case, it is expensive because it includes an OCR device and the like. Furthermore, there are devices that recognize and display characters read by an OCR device, etc., but this also uses a character generator to retrieve the expected characters.
This method has drawbacks such as limited character formats and a large memory capacity for the character generator. The present invention has been made in view of these drawbacks,
An input device is provided for inputting arbitrary characters, symbols, figures, etc., and the operator writes the characters, symbols, figures, etc. to be displayed by hand, and displays them in the same form as input. .

This will be explained below along with examples. FIG. 1 shows the appearance of the present invention. Reference numeral 1 indicates a CRT device, and the CRT device 1 includes a display section 7 for displaying characters, symbols, figures, etc.;
It includes a keyboard device 2 provided with keys for inputting symbols or controlling the CRT device, and a display lamp 6 for displaying the status of the CRT device.

Furthermore, an input device 3 for inputting characters, symbols, figures, etc. from the CRT device 1 via a cable 5 is attached. This input device 3 is provided with an input pen 4.
Details of the input device 3 are shown in FIG. 2, and this FIG. 2 will be explained.

The input device 3 is provided with a total of 288 input elements 31, which also serve as display elements, arranged in 18 vertical rows and 16 horizontal rows.

These input elements 31 are used for inputting characters, symbols, figures, etc., and in addition, ENTER manual input 33 (for instructing to transfer input characters etc. to the CRT device), CLE
An AR input 32 (for clearing input characters, etc.) is provided.

These 290 input devices are scanned, and at this time, when the input pen 4 comes into contact with the input element 31, the human input element becomes ON and is stored in the storage means, and at the same time, the display element of the input element is turned on. These human input elements have the same number of dots as one character on a CRT.

However, the input device may have n times the number of dots for one character. An input pen 4 is attached to the input device 3 via a lead wire 42, and an electrode 41 is exposed at the tip of the input pen 4, to which +5V is supplied. E of input device 3
When inputting characters, symbols, etc. next to NTER input 33 and CLEAR input 32, the above inputs 32 and 33
A protrusion 34 is provided to partition the area from being inputted. The input means of the input device 3 is not limited to the above, but may be a mechanical switch, electromagnetic or other input switch means.

Next, the block diagram of the embodiment of the CRT device and input device is shown in Figure 3.
This will be explained with a diagram.

A data memory 11 stores information to be displayed on the CRT.

Data memo I month 1 stores information to be displayed by inputting information from the keyboard or the central processing unit via line 11A. The information in the data memory 11 is input to the character generator 12, where the code signal information is converted into a dot signal for the CRT, and recorded in the display memory 13 at an address corresponding to the position displayed on the CRT. The display memory 13 is connected to the I of the CRT device 14.
It has a capacity of the number of bits equivalent to the number of dots on the screen.

The display memory 13 also receives information such as characters, symbols, figures, etc. from the input/output device 15. The display memo 1 3 sequentially reads dot information in synchronization with the scanning of the CRT device 14, and characters, symbols, figures, etc. are displayed on the CRT.

Detailed circuits of the input/output device are shown in FIGS. 4 and 5 and will be described below. Reference numeral 22 designates the matrix-shaped input/output device described in FIG. 2, and the details are shown in FIG. 5.

This input/output device 22 is scanned by a counter 24, and if there is an input at this time, it outputs ゜゜1゛ to a line 61 and is input to the storage device 21. The storage device 21 has a one-to-one correspondence with the input elements of the input/output device 22, and is addressed in synchronization with the input/output device.

That is, from the counter 24, a line 67 is scanned, a vertical line is scanned, a line 66 is scanned, and a horizontal line is scanned. If there is an output of ゜"1" from the input/output device 22 to the line 61, ゜"I" is output to the corresponding address location of the storage device 21.
゛ is memorized. Thereafter, "1" is output to the line 60 to light up the element to which the input of the input/output device 22 is applied. At the time), the pulses from the pulse generator 28 are supplied to the counter via the AND gate 53 and the OR gate 52, which sequentially counts up and scans the human output device 22 and the storage device 21.

ENT for transferring to CRT device after input operation is completed
When ER input is performed, F/Fs 25 and 26 are set. When F/F 26 is set, AND gate 53 is closed via inverter 50, and AND gate 51 becomes valid. When the F/F 25 is set, the control device (
interrupt (TN
Output as T). When the control device receives this signal,
An interrupt (ACK) is returned, and the F/F 25 is reset and the counter 24 is also reset. Subsequently, a clock signal is supplied from the control device to the gate 51 via the line 62, and is input/output from the OR gate 52 to the counter 24, so that the counter 24 performs scanning again.

As a result, the data are sequentially read from the storage device 21 and input to the buffer 23. When 8 bits of data are input to the buffer 23, a WRITE signal is output from the control device, and 8 bits of data are stored in the display memory shown in FIG. 3 from the buffer 23. Repeat this action,
I characters are stored in the display memory at the position to be displayed from the storage device. When this operation is completed, input enable (1N
putENB) is output, the F/F 26 is reset, and the memory device 21 is cleared via the OR gate 54, making the next input possible.

When there is a CLEAR input, F/T 27 is set and memory device 21 is cleared via OR gate 54. Next, the input/output device shown in FIG. 5 will be explained.

As input/output elements, light emitting diodes with cathode electrodes exposed on the display surface are used. Light emitting diode 102 (1
The anode of the transistor 110 (110a, 110b...) is connected to the collector of the transistor 110 (110a, 110b...), the emitter of this transistor 110 is connected to the power supply, and the base is connected to the transistor 1.
10 switching gates 109.

The cathode of the light emitting diode 102 is connected to a resistor 103 (103
a, 103b...) through the diode 105
(105a, 105b...), and the cathode of the diode 105 is connected to the anode of the transistor 10.
8 (108a, 108b...), and the emitter of this transistor 108 is grounded.

Further, the base of the transistor 108 is connected to the switching gate 116, and the base of the transistor 108 is connected to the switching gate 116.
When 8 becomes 0N, the light emitting diode is turned on. The anode of a diode 106 is connected to the cathode side of the light emitting diode 102 via resistors 103 and 104, and the cathode of the diode 106 (106a, 106b...) is connected to the switching gate 107 (107a, 107b, etc.).
·····)It is connected to the. Furthermore, the resistor 104 is input to the OR gate 111;
A human signal is output via 2. The input is that transistors 110 and 108 are OFF and gate 107 is OFF.
When the input pen touches the light emitting diode when the input pen is open, the input signal is input to the OR gate 111 and is supplied to the storage device 21 as an input signal. The counter 24 explained in FIG.
The counter 24a drives the vertical columns of the input elements in the matrix configuration, and the counter 24b drives the horizontal columns of the matrix.

The output of the counter 24a is input to the decoder 100 from the second digit and decoded, and each decoded output is sent to the switching gates 109a, 109b, . . .
The output of the counter 24b is input to the decoder 101 and decoded, and each decoded output is input to the switching gates 116a, 116b of each horizontal row.
・Scan the matrix.

The gate 107 for manual drive receives the outputs of the decoders 24a and 24b corresponding to the columns of the matrix, and also receives the output of the first digit of the counter 24a.

If all of these are Bi, the gate 107 is opened and input using an input pen is possible at this time, and if there is any input, it is manually input to the AND gate 112 via the OR gate 111.

The inverter output of the F/F 26 shown in FIG. 4 is input to the other end of the AND gate 112, and when there is an ENTER input, the AND gate 112 is closed to prevent input.

The decode output corresponding to the column of the decoder 100 is input to the gate 109 of the light-emitting diode lighting drive, and the inverted output of the l-th digit of the counter 24a0) is input to the other end. When all these human powers reach "I", the gate 109 opens and the transistor 110 becomes ON, supplying positive power to the light emitting diode.

The drive gates 116 for the horizontal rows of the matrix are input with the decode output corresponding to the column of the decoder 101, the output of the inverter 114, and the output from the storage device 21 through the line 60, all of which are "1" inputs. If so, the gate 116 opens and the transistor 108 becomes ON,
A current flows through the positive power supply supplied to the emitter of the transistor 110, the light emitting diode 102, the resistor 103, the diode 105, and the transistor 108, and the light emitting diode 102 lights up. In this way, the counter 24a01
When the digit is zero, manual input from the input elements scanned by the counters 24a and 24b is possible.

Then, when an input is received from the input element, the counter 24a
The display element lights up when the first digit is set. The counters 24a and 24b sequentially scan and input the input elements of the matrix, and 18 x 16 dots of handwritten characters, symbols, or figures of any shape are input.
It will be displayed on RT. If CLEAR is input during scanning, T27 is set and after clearing the memory device, F
/F27 set name\winter If you have the same ENTER power, F/F2-6 will be set and the information will be invalidated from the storage device? transferred to memory. Input is not possible at this time. As described above, in the display device of the present invention,
It has an input surface including a plurality of switch means arranged in a matrix and a display body arranged corresponding to each of the switch means, and characters, symbols, etc. to be input on the switch means of this input surface are displayed. By handwriting letters and symbols, the switch means at the handwritten position is operated, and the display body corresponding to the operated switch means is lit, and 0N/0F from each switch means constituting the matrix is activated.
an input means for sequentially outputting binary signals from the input means; a storage device having a capacity corresponding to the switch means of the input means for temporarily storing the binary signals outputted from the input means; and an input surface of the human power means. In order to display handwritten characters, symbols, etc. on the display device, means for introducing a binary signal temporarily stored in the storage device into the display memory of the display device as display information is provided. By simply handwriting symbols, figures, etc. on the input surface of the input means, the binary signals from the handwritten characters, symbols, etc. can be sent directly to the display memory and displayed without going through a character generator. Since the display is not performed via a character generator, the memory capacity can be reduced even when a character generator is provided.

Furthermore, when a handwritten operation is performed on the input surface of the input means, the switch means at the position where the handwriting is performed is operated and the display corresponding to the switch means is lit, so that the input state of handwritten characters, symbols, etc. It is easy to understand from this input screen,
It has the feature that this handwriting input operation is also facilitated.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing the appearance of the device of the present invention, and FIG.
3 is a block diagram showing the configuration of the device of the present invention, FIG. 4 is a block diagram showing the circuit configuration of the input/output device, and FIG. 5 is the input/output device 22 of FIG. 4.
FIG. 2 is a circuit diagram specifically showing the configuration of FIG. 1: CRT device, 2: Keyboard, 3: Input device, 4:
Input pen, 5: cable, 6: display lamp, 7: display section, 31: input element, 32: CLEAL {human power, 33: E
NTER input, 11: Data memory, 12: Character generator, 13: Display memory, 14: CR
T device, 15: input/output device.

Claims (1)

[Claims] 1. It has an input surface including a plurality of switch means arranged in a matrix and a display body arranged corresponding to each of the switch means, and characters, symbols, etc. to be input on the switch means of this input surface are input. By handwriting the letters and symbols, the switch means at the handwritten position is operated to light up the display corresponding to the operated switch means, and the ON/OFF signals from each switch means constituting the matrix are turned on.
an input means for sequentially outputting binary signals due to OFF, a storage device having a capacity corresponding to the switch means of the input means for temporarily storing the binary signals output from the input means, and an input surface of the input means; In order to display handwritten characters, symbols, etc. on the display device, the present invention is characterized by comprising means for introducing a binary signal temporarily stored in the storage device into the display memory of the display device as display information. Display device.