JPS5916299B2 - Data processing method in display display system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improved data processing scheme in a display display system.

Conventionally, in a data processing system using a keyboard display display device, the type of data transmission is between a central processing unit CPU and a keyboard display display device ( (including a terminal control device), first, as shown in Figure 1, format information that specifies the data to be input from the keyboard (for example, in the case of a slip processing job, the type of instruction slip, (product name, customer, unit price, date and time of issue, etc.) were output from the central processing unit CPU via a communication line to a keyboard display display device or the like via a terminal control device. The keyboard display device displays information from the keyboard to the central processing unit CP according to format information.
Data to be processed by U (for example, in the case of slip processing work, quantity, sales amount) were input and transmitted via the terminal control device. Incidentally, when a part of the format information of the data to be sent from the keyboard display device changes, etc., it is outputted again from the central processing unit CPU to the keyboard display device via the communication line. Therefore, data is sent and received via the communication line every time the format information etc. is changed, which increases the complexity of the central processing unit CPU program, reduces the processing capacity, and increases the usage time of the communication line. In addition, when there is an abnormality in the communication line, the keyboard display device becomes unusable, leading to the interruption of business operations.

The present invention has a memory that can be freely rewritten from a central processing unit CPU through a communication line or locally on a terminal device in a terminal control device that commonly controls a plurality of keyport display devices, and format information is stored in this memory. The above-mentioned drawbacks are solved by providing a data processing method that can memorize format information etc. from each display device via the central processing unit CPU or locally at the terminal and arbitrarily pull out the format information etc. required by the device itself. It is.

Next, one embodiment of the present invention will be described.

In FIG. 2, reference numeral 1 denotes a central processing unit CPU, and when starting the system operation, format information is sent to memory 4 via terminal control device 3 using communication line L, etc., in the transmission format shown in FIG. 3. etc.

The format information etc. written to this memory 4 is stored in the fourth memory.
As shown in the figure, it is roughly divided into an address section 10 (addresses 0-m) and a data section 11 (addresses m-n).

The data section 11 has a keyboard display device KB.
A unit of format information (hereinafter referred to as a segment) that is read out at one time upon receiving a format information output command from the central processing unit 1 is written into the DP 5 as many as required for the job. The start addresses of the segments written in the data section 11 are written in the address section 10 in accordance with the order in which the segments are stored.

When the writing of format information, etc. to the memory 4 is completed, the keyboard display device 5 requests the terminal control device 3 to output screen data to itself.

When the terminal control device 3 detects a screen data output request from the keyboard display device 5, it waits for a terminal activation signal from the central processing unit 1, as shown in FIG.

When the terminal activation signal is received, a terminal identification signal indicating the keyboard display device 5 requesting output of screen data and a format information request signal are sent to the central processing unit 1 through the communication line 2.

When the central processing unit 1 receives the terminal identification signal and the format information request signal, the central processing unit 1 stores the data section 11 of the memory 4.
A terminal selection signal designating the keyboard display device to which the segment is to be output and a format information output command designating the start address of the segment to be output from the address section 10 are transmitted. When the terminal 3 receives the terminal selection signal and the format information output command, it selects one of the start addresses in the address field 10 according to the instruction of the format information output command, and selects the segment indicated by the start address from the keyboard specified by the terminal selection signal. It is output to the display device 5.

Furthermore, if format information is required for the display device, a screen data output request is issued to the terminal control device 3, and the operation is repeated thereafter.

Note that the information stored in the data section 11 of the memory 4 is not limited to format information, but may also be commands or the like that are instructed online from the central processing unit 1 to the keyboard display device.

Furthermore, the communication line 2 in FIG. 2 is not limited to a communication line.

As explained above, the present invention has a rewritable memory 4 in the terminal control device 3, and the memory consists of an address section 10 and a data section 11.When the system starts operating, the terminal control device 3 has a rewritable memory 4. By storing a plurality of segments, which are units of data read from the processing device 1 to the display device, in the data section, and storing the start address of each segment in the address section,
When outputting fixed information such as format information to the keyboard display device 5 during business execution, a simple command that instructs the start address of the address field 10 corresponding to the output segment is sent from the central processing unit 1 to the end TC. Then, data output operation from the memory 4 to the keyboard display device 5 is activated.

Therefore, when the central processing unit CPU is in normal use, it is freed from the task of transmitting format information, etc., which simplifies programs, improves processing capacity, and reduces communication line usage time, reducing the number of connections between multiple units. It is possible to connect to the communication line of the network, which improves usage efficiency.

Furthermore, when the keyboard display device requests format information, the central processing unit 1 decodes it and instructs the terminal control device 3 to output the format information in the memory 4. This has the advantage of allowing a wide variety of line message configurations and data configurations in the memory 4.

As one technique and effect that can be easily inferred from the present invention, the use of the central processing unit 1 and communication line 2 of the present application is stopped, and the central processing unit 3, memory 4, and keyboard display device 5 are used to The above-mentioned tasks can be performed locally when there is a failure in the device 1 or the communication line 2.

For example, writing to the address section and data section of the memory 4 is performed by connecting a data input device to the terminal 3. For output to the keyboard display device 5, a specific address in the address section 10 of the memory 4 is made to correspond to an arbitrary key on the keyboard for each system. The terminal 3 identifies the pressed key of the keyboard and outputs the segment of the data section 11 having the start address indicated by the contents of the specific address in the corresponding address section 10 to the requesting keyboard display device.

[Brief explanation of the drawing]

FIG. 1 is a signal configuration diagram showing a conventional signal system, FIG. 2 is a system diagram of a display system according to the present invention, and FIG.
The figure is a signal configuration diagram showing the signal system at the start of system operation according to the present invention, Figure 4 shows how to use the memory shown in Figure 2, and Figure 5 shows the signal system during business execution according to the present invention. FIG. 3 is a signal configuration diagram. 1...Central processing unit, 2...Communication line, 3...Terminal control device, 4...Memory, 5...Keyboard display Device.

Claims (1)

[Claims] 1. In a data processing system in which a keyboard display device is connected to a communication line connected to a central processing unit via a terminal control device, the keyboard display device is written to the terminal control device from the keyboard display device and the central processing unit. means for storing a plurality of pieces of fixed format information corresponding to input operations in segment units, and one piece of the fixed format information corresponding to the segment instructed by the central processing unit and the keyboard display device is stored on the keyboard display. A data processing method in a display display system characterized by output to a device.