JPS60184286A - Terminal - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to a terminal device equipped with a display means used in a computer system or the like.

[Prior Art] Conventionally, in this type of device, for example, a CRT*1°1 screen terminal device, table small information is received from a host computer or the like, and this display information is displayed on the screen 11.

Use the information on the CRT required for this purpose! Either you have to make a note of it or start a program on the host computer and display it on the CRT. For this reason, the user was made to feel embarrassed, and the negative value of the rehost computer was increased.

[Purpose] The present invention was made in view of the problems of the prior art described above, and it is possible to record the displayed information and display it again on the display screen by manual key means from the key B stage. The purpose is to provide a terminal device with

C'A 2nd Example] Hereinafter, one embodiment of the present invention will be described in detail with reference to the drawings.

In Figures 1 to 5, m = embodiments of the present invention are shown, and in each figure, the same reference numeral is used to represent an aspect of an entity, which may also indicate the function or appearance of the entity. Lee j,
Furthermore, dividing it into two and explaining IIt is 5-1.5-2
It is written in the form like this.

FIG. 1 shows a schematic external view of a CRT display device j (r) according to an embodiment of the present invention.
2 is a CRT display surface, 3 is a keyboard section, 3-1 is a JIS layout key switch, and 3-2 is a switching key.

CRT J
Since it has the same functions and specifications as those shown in the figure, the explanation thereof will be omitted.

By operating the Gino change key 3-2, the C
You can set the RT display device to a state in which it can exchange data with the host computer (hereinafter referred to as online status), save the current display screen, or display the saved contents on the display. I'll do it! 11 (hereinafter referred to as offline state) is possible.

A functional block diagram of this embodiment is shown in FIG. 2. 3 in the diagram is B
I Igl is a keyboard section, and 4 is a key code generating section that generates I-key data in response to manual key switch operation of the keyboard section 3. For example, even if the °°A゛ key of JIS layout key switch 3-1 is pressed manually, the hexadecimal code "41", which is the code for the character "Ao" in the JIS code, will not be generated, but if the "A" key is pressed manually, Data that allows the control unit 5 to determine this is generated and sent to the control unit 5.

5 is a control fζI(
in.

Depending on the key data from the key code generator 4, the online/offline status 8 can be changed to uJ, or the online status 8 can be changed to
At .theta.-g, the key data is converted into a key code and written to the human output interface, or the human data from the input ink face 7 is output to the CRT control section 8. In the online state, processing of the CRT screen memory 6 is performed.

6 is the CRT screen memory, and the control tall f+
Control memory 6- which is the work area in li 5
Contains 0. The CRT table/I< screen of this embodiment has a capacity of 80 characters per line and 20 lines, that is, 80 x 20 characters.
A storage area for nine display screens is provided in the screen storage memory (hereinafter referred to as SRAM). This storage area is divided into 9 parts for each screen, and each is divided into SRAM (1
)6-1, SRAM ('2)6-2,...SR
AM ('9) 6-9. Of these, SRAM (1) 6
-1 indicates the information currently displayed on the display screen.

Reference numeral 7 denotes an input/output ink interface, which has a size of 1"71 for interfacing with a host I/computer, etc. In this embodiment, it is an interface of the general R3-232C standard.

By inputting a key code etc. from the control unit 5 into this human output interface, this data is sent to the host side, and data from the host to this embodiment is sent to this human output I interface 7, and the control unit By reading data from this input/output interface 7 at 5, data from the host is taken in.

Reference numeral 8 denotes a CRT control section, which has a built-in display memory for one CR71 screen, and a display data code is written into this display memory by the control section 5.

The CRT control unit 8 generates a character pattern corresponding to the display data code in the display memory and displays it on the display screen of the CR7 display 9. 9 is a CRT display (hereinafter referred to as CRT), which has a display capacity of 80 characters x 20 lines as described in 41j.

The 31st threshold is a block diagram showing the relationship between the input/output ffJ and the microprocessor when the control unit 5 shown in FIG. 2 is configured with a microprocessor.

The same numbers are omitted for the same components as those in FIG. 2. The control unit 5 includes a microprocessor, 5-1, and ROM (
The control program (microprogram) for the microprocessor 5-1 is stored in the ROM 5-2. The SRAM 6 also includes a control memory 6-0 used by the microprocessor 5-1. Also, when viewed from the microprocessor 5-1, the CRT control unit 8 is equipped with a 1-byte input/output port, and the CRT controller 8 inputs redata through this port.
Display on RT. Further, 10 is a data bus, and 11 is an address bus, through which data is exchanged with input/output elements and various controls are performed.

Next, the control operation of the unimplemented example shown in FIG. 3 will be explained below with reference to flowchart 1. of 41.DELTA.

When the device is powered on, step 51 to restep S
? : Advance, SRAM (1) 6-1 ~ SRAM (9)
All the contents of 6-9 are cleared, and the display data of the CRT control section 8 is cleared in step S3. Then step S4
Human power from input/output interface 7 (CR from host)
Check whether there is an output request and output data to T). If there is an input, the process advances to step S5, and the SRAM
(1) Write this manual data in 6-1 Step S6
Similarly, write this manual data to the CRT control unit 8C.
Display on RT9. Then, the process proceeds to step S4.

If it is determined in step S4 that there is no human power on the human output interface 7, the process proceeds to step S7, and it is checked whether there is any human power on the keyboard unit 3. If there is no key manpower, the process returns to step S4, and if there is key manpower, the process returns to step S8.
Proceed to. In step S8, the manually operated key is switch key 3.
-2 Check whether it is human powered or not.J change key 3-2If it is not human powered,
That is, if the keys of the JIS layout key switch 3-'1 are manually operated, the key code corresponding to the human keys is outputted to the input/output interface in accordance with step S9. That is, when the key 3-1 of the keyboard section 3 is input, the input key is determined by the key code generation section 4, and key data corresponding to the key is outputted to the control 6115. The control unit 5 converts the key data from the key coat generation unit 4 into JIS
(JIS-C6220) code and output to the input/output interface 7. And step S J,
At O, the JIS code is sent from the input/output interface 7 to the host side. Then, the process returns to step S4 and waits for the next human output interface input or key human input.

In step S8, if the JfJ key 3-2 is powered manually, this is an instruction to change 97'J from the online state to the offline state, so the process advances to step Sll and waits for the next key to be fully powered. And if there is key human power, step 512
Check whether the switching key is manually operated. (Turn off) Key 3-2 If you manually turn it off, turn it off from the offline state to the online state.
Since it is a % instruction, SRAM (1)6 is set at step SL3.
The contents of = 1 are read into the CRT control unit 8, and the contents of the SRAM (t) 6-1 are displayed on the CRT in step S4.
Return to

If the switching key is not manually operated in step S12, the process advances to step S14 to determine whether the mode key ("R" ° key or 1i"W" key) is input. If the mode key is manually operated, the mode input in step 515 is determined. Set the mode corresponding to the key. The stage weight of this mode is the °R" key of the JIS layout key switch 3-1. In the case of manual operation, the mode flag in the control memory 6-0 of the SRAM 6 is set to read mode (a state where the save screen is displayed on the CRT). ), and in the case of manual power, set the mode flag in the control memory 6-0 to write mode (SRAM (1) to 5RANj (2) to S
, RAM (9)). After setting the mode, the process returns to step Sll and waits for the next key input.

If it is determined in step S14 that the mode key is not manually operated, proceed to step 5164, and press the number 1 white key "2'° to "9"°.
Find out whether the key is human power. If it is not the number A 11j key, the process returns to step Sll, and if the number (+7j key is only available), the process proceeds to step S17, where it is checked whether the mode flag in the control memory 6-0 is in the read mode.Read mode In this case, the process proceeds to step 318, where the contents of SRAM (n) corresponding to the value "n" of the numerical key inputted just now are loaded into the CRT control section 8, and the contents of SRAM (n) are transferred to the CRT.
9 and return to step S11.

If it is determined in step S17 that it is not the read mode, the process advances to step S19 to check whether the mode is write mode. If the mode is light mode, proceed to step S20; 9. SRAM (1)
The contents of are transferred to the SRAM(n) corresponding to the value "n'' of the numerical key input just now. Then, in step S l ,
Return to 1. Also, in step SL9, the light mote step Sll is reached.

In this way, after posting a message, it is dynamically online. The key data from the JIS key switch 3-1 is sent to the host I, and the take from the host is displayed on the CRT 9. here luJ 11 key 3
-2 by entering the online status 71) to the offline status 16. become. For example, when the front of the CRT9 is displayed as shown in Figure 5 (A), the switch key 3
-2, then "'w" and '"2゛° of JIS layout key switch 3-1, SRAM [
2] The current state of the table No.l\ (displayed as "A B C") is saved in 6-2. Furthermore, ν[i key 3-2
When you input , it becomes an IE that is logically connected to . Subsequently, there is an output from the host I to the CRT display device, and the 51'? When the table of L5 (B) is in the state pJ main key -
'2, then 'R' of JIS layout key switch 3-1, enter '2' and enter SRAM.
(2) The content of 6-2, that is, the display of “A B C” is CR
T9 (returns to the display state of FIG. 5(A)).

Then, if you input the Gongka key 3-2 again, you will see Figure 5 (B) again.
) and is logically connected to the host.

[Effects] As explained below, according to the present invention, the terminal device alone can store the information previously displayed on the display means, and the information cannot be displayed at the time i1+, so that the previously displayed information There is no need to write down or send the IRF from the host side, and a terminal device with less load on the host side can be provided.

[Brief explanation of the drawing]

No. 11Δ is a schematic external view of a CRT terminal device according to an embodiment of the present invention, No. 21x′l is a functional block diagram of this embodiment, and FIG. 3 is an input/output element when a microprocessor is used in this embodiment. FIG. 4 is an operation control flowchart of this embodiment, and FIG. 5 is a diagram showing an example of the display on the display section on the main side. In the figure, 1...CR7 display device 53-1...JIS layout key switch, 3-2...changeover switch, 4...
Key code generation unit, 5... Control unit, 5-1... Microprocessor, 5-2... ROM, 6... SRA
M. 7...I/O interface, 8...CRT control 2
jf"B, 9...CRT, 10...Data bus,
11...Address bus.

Claims (1)

[Claims] key manual r stage, first writing t*r stage for recording display information on the display screen tα, and memory ↑+'i of the first storage means.
a display means for displaying information on both sides of the display; a second storage r stage capable of storing at least two screens worth of information on both sides of the display; ☆11.1 device characterized in that it has four transfer stages (r stages for bidirectionally transferring the contents of one stage) and said second storage).