JPS61232490A - Character display unit - 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 of the Invention] The present invention relates to a character display device used as a terminal of a computer. The present invention relates to a device for converting data (hereinafter referred to as internal representation) to data to be displayed on a character display device (hereinafter referred to as table display data).

[Prior art and problems]

The two-dimensional array format table created by the central processing unit has six elements (titles) with emphasis on processing efficiency.

Headnote 2 Footnote 1 List of front items 1 List of front items.

array of cell data) is held in the main memory as a t-describing structure. - 10,000, the table displayed on the character display device consists of the display position on one screen (hereinafter referred to as 9-screen address) and characters (or control codes for displaying ruled lines)
This data is stored in the video RAM as a data array (hereinafter referred to as table display data).

Therefore, when displaying a table created by the central processing unit, the central processing unit must convert the table internal representation into table display data and send the table display data to the character display device. , the following two points are problematic.

(a) A procedure must be prepared for each application program to convert from table internal representation to table display data, but C0BOL, P
Even if a high-level language such as L/I is used, several hundred steps of description are required, which is one of the bottlenecks in programming.

(b) While the central processing unit is performing data conversion from table internal representation to table display data.

The character display device that should receive the converted table display data is in a state of waiting for a message to arrive, and the operating rate of the system as a whole is reduced.

[Purpose of the invention]

An object of the present invention is to solve the above-mentioned problems by adding means to a character display device for converting the internal table representation of a table processed by a central processing unit into table display data. An object of the present invention is to provide a character display device that reduces the number of man-hours required and improves the efficiency of using a computer system.

[Structure of the invention]

According to the present invention, there is provided a means for determining whether the content of a message received from a central processing unit is a data structure of a table in a two-dimensional array format; means for retaining said data structure when the content of said message is said data structure in an existing character display! lc
Embodiments of the Invention Nine embodiments of the present invention will be described below. Figure 1 is 2
1 is a ten-dimensional diagram of a character display device showing an embodiment of the present invention; FIG. In FIG. 1, one embodiment of the present invention includes a communication control device 10, a character display device consisting of an input/output control device [16, a video module AM 17, a C-T device 18, and a keyboard device 19, and further includes these. In other words, the broken line added to the communication control device 1
Message determination circuit 11 from 0, input buffer 7712 connected to this, and display data assembly circuit 13 connected to message determination circuit 11 and input buffer 12.
is connected to the control memory 14 connected to the display data assembly circuit wr13, the message judgment circuit 11 and the display data assembly circuit 13, and the output signal is sent to the input/output control device 1.
6.

The input buffer 12 is an input buffer that temporarily holds the data structure (referred to as table internal representation) 1 of a table in a two-dimensional array format processed by the central processing unit, and the message judgment circuit 11 receives the next message from the central processing unit ( This is a circuit that determines whether or not the content of the downlink text (hereinafter referred to as downlink text) is an internal expression in a table, and outputs the downlink text to the input buffer 12 if the content of the downlink text is an internal expression in the table. The control memory 14 stores a sequence of data (referred to as table display data) t- that can be displayed on an existing character display device based on the table internal representation.
The display data assembling circuit 13 is a memory that holds a series of companion instructions to be created, and the display data assembly circuit 13 sequentially interprets and executes the instructions held in the control memory 14 to convert the table internal representation held in the input buffer 12 into table display data. It is a circuit.

If the content of the downlink text is not an internal representation of the table, the multiplexer 15 selects either the downlink text that passes through the message determination circuit 11 or the table display data output from the display data assembly circuit 13, and inputs and outputs the output. This is a circuit that supplies the control device al16.

FIG. 2 shows a table in a two-dimensional array format that is the object of the present invention. In Figure 2, the names of each part of the table used in this example are added, and the title 21 is ``By prefecture:
Note 22 indicates the name of the 1982 survey (in units of 100 households). Note 23 indicates "Owned house, publicly rented house, privately rented house, salaried house, and rented room." Table 111124 shows the items of “
Shows items for Hokkaido, Aomori...Fukushima. cell data 2
5 indicates the numerical value of each column. Furthermore, footnote 26 indicates ``[Material Census Report (Statistics Bureau of the Prime Minister's Office)'', etc. Figure 3 is a diagram showing the structure of the internal representation of the table.

Figure 4 shows the contents of each structure H and i element included in Figure 3 - t-2.
It is a figure shown based on the table shown in a figure. In FIG. 3, the structure of the table internal representation used in this embodiment is as follows: title information 21a, headnote information 22a, front information 23a, front side information 24a, celta information 5a, footnote information 268, etc., and controls added thereto. The code is 20 and tV.

In FIG. 4, title information 218, headnote information 22a, and footnote information 26a each consist of a start line, start column, number of characters, and character string.

The title information 23a and front side information 24a are composed of the number of starting rows σq9 items, column headings, item lengths, and arrangement of items. The order of the items in title information 23a is owned house,
...Information 24 in Table 9 includes items such as salaried housing, room rental, etc.
The order of items a includes place names such as Hokkaido, Yamagata, and Fukushima, and the cell data information 25a further includes items such as data length, arrangement direction of matrix, etc., and arrangement of cell data.

In such a configuration, the downlink text is supplied to the message determination circuit 11 via the communication control device 10i.

9. It is assumed that a corresponding control code is added to the beginning of the downlink text passed to the device employing this embodiment if the content is internally represented in a table.

The message determination circuit 11 refers to the control code 20t at the beginning of the downlink text to determine whether the content of the downlink text is table internal representation or not, and determines subsequent operations.〇(a) If it is table internal representation .

A control signal is sent to the multiplexer 15 to select the output of the display data assembly circuit Wr13.After the message, a control code (hereinafter referred to as e) indicating the end of the message is sent.
(abbreviated as tx) This message is output to the input buffer 2 until t is detected, and when the control code etxt is detected, all display data assembly signals are generated and stopped. (b) When the table is not internally expressed.

After outputting a control signal to the multiplexer 15 to select the output t-N of the message determination circuit 11, the control signal from the beginning of the downlink text to the control code etx is output to all the multiplexers 15 and then stopped.

When the display data assembly circuit 13 receives the display data assembly signal from the message determination circuit 11, it sequentially interprets and executes the commands held in the control memory 14, converts the contents of the input buffer 12 into table display data, and sends the data to the multiplexer 15. When this conversion is completely completed, the control code etxf is output to the multiplexer 15 and stopped. Conversion from table internal representation to table display data is performed in the following steps.

(a) Creation of title A start address is created with reference to the title information, and the number of characters m is extracted from the title character string cash cover 7a 12 and output to the multiplexer 15.

(b) Creating a headnote A start address is created by referring to the headnote information, and at the same time, a headnote character string corresponding to the number of characters is read from the input buffer 12 and output to the multiplexer 15.

(c) Creation of a framework Referring to the title information and front side information, data for ruled lines constituting the framework T-structure is created by a combination of a screen address and a control code for displaying ruled lines, and is output to the multiplexer 15.

) Title item 2 Arrangement of front side items Refer to the title information and front side information and follow the order of the items.
) @Create the start address of the advertisement item, read the item name from the full-person buffer 12, and output it to the multiplexer 15.

(E) Arrangement of cell data Referring to the title information 9 front side information and cell data information, sequentially create a start address for each cell category 1 in accordance with the cell data arrangement direction, and read the cell data from the human cover 7a 12. and outputs it to the multiplexer 15.

(f) Creating a footnote A start address is created with reference to the footnote information, and a footnote character string corresponding to the number of characters is read from the input buffer 12 and output to the multiplexer 15. The output of multiplexer 15 is passed to input/output controller 16 and processed by the functions of a conventional character display device.

〔Effect of the invention〕

As explained above, according to the present invention, it is possible to perform the conversion from table internal representation to table display data on the gold character display device side, and it is possible to develop an application program for creating and displaying tables. In addition, it is possible to distribute the load on the central processing unit shared by many terminal devices, and the throughput of the entire system is improved.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing an embodiment of the present invention, FIG. 2 is a diagram showing a table in a two-dimensional array format targeted by the present invention,
Figure 3 is a diagram showing the structure of the downstream text including the table internal representation, and Figure 4 shows the contents of each component of the table internal representation included in Figure 3 in the two-dimensional array format table shown in Figure 2. FIG. DESCRIPTION OF SYMBOLS 10... Communication control device, 11... Message determination circuit, 12... Input buffer, 13... Display data assembly circuit, 14... Control memory, 15... Multiplexer, 16... Input Output control device, 17...video I
(, AM, 18... CB, T, 19... Keyboard device.
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Claims (1)

[Claims] means for determining whether the content of a message received from a central processing unit is a data structure of a table in a two-dimensional array format; and means for temporarily holding the message when the message is a data structure of a table in a two-dimensional array format; , when the content of the message is the data structure of the table, means for converting the data structure of the table into a data arrangement that can be displayed on an existing character display device.