JPH04271429A - Display system for character string echo - Google Patents

Abstract

PURPOSE:To realize the high-speed processing in the display system of character string echo where a character string is displayed on a graphic picture of a graphic display device. CONSTITUTION:A command group consisting of plural commands issued from a host computer 1 is successively analyzed in a command processing part 11, and analyzed commands are transferred to a graphic data display processing part 13 to display data on display devices 6 and 7 in accordance with commands. In this display system of character string echo, an identifier indicating the command to be last analyzed of the command group is included in the command group, and analyzed commands are held until the command processing part 11 recognizes this identifier, and the held command group is collectively transferred to the graphic data display processing part 13 when the command processing part 11 recognizes the identifier.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a character string echo display method, and more particularly to a character string echo display method for displaying a character string on a graphic display screen.

[0002] In recent years, graphics processing using computers has made remarkable progress, and along with this, efforts have been made to increase the processing speed of computers.

[0003] Therefore, there is a desire for faster processing in display devices that perform image display processing based on information supplied from a host computer.

0004

2. Description of the Related Art FIG. 4 shows a conventional character string echo display method employed in a display device. In the figure, 1 is a host computer, 2 is a display device, and the display device 2 includes a command processing unit 3, a common memory 4,
Graphic data display processing section 5, video processor 6, CRT
(cathode ray tube) 7, etc.

Now, assume that the host computer 1 issues commands 1 to 3 as a group of commands related to character string echo to the display device 2. When commands 1 to 3 are supplied from the host computer 1, the command processing unit 3 analyzes each command 1 to 3 and generates data necessary for string echo (echo index, echo position, echo state, etc.) are stored in the internal memory 8 provided in the command processing section 3 in the order of command 1, command 2, and command 3. Subsequently, the command processing unit 3 transfers the data stored in the internal memory 8 to the common memory 4. The display device 2 shown in this example has a configuration that does not allow direct data access between the command processing section 3 and the graphic data display processing section 5, and therefore a common memory 4 is provided as an interface. .

[0006] When the command processing section 3 executes the analysis of the command 1, it issues a display request to the graphic data display processing section 5. In response to this display request, the graphic data display processing section 5 reads the data of command 1 from the common memory 4 functioning as an interface, and sends the data to the C through the video processor 6.
Display on RT7.

Similarly, when the command 2 is analyzed, the command processing unit 3 requests the graphic data display processing unit 5 to display the data, and when the command 3 is analyzed, the command processing unit 3 requests the graphic data display processing unit 5 to display the graphic data. The configuration is such that a display request is made to section 5 and display processing is executed. That is, in the conventional character string echo display method, a display request is made to the graphic data display processing section 5 every time each command is analyzed.
The configuration was such that display requests were made as many times as there were commands.

[0008]

[Problems to be Solved by the Invention] As described above, in the conventional display method, the command processing unit 3 requests the graphic data display processing unit 5 to display each time it analyzes each command. The problem is that it takes time to display the string, and high-speed processing cannot be performed.

The present invention has been made in view of the above points, and it is an object of the present invention to provide a method for displaying character string echoes that can realize high-speed processing.

0010

[Means for Solving the Problems] In order to solve the above problems, the present invention sequentially analyzes a command group consisting of a plurality of commands issued by a host computer in a command processing section, and also analyzes the analyzed commands. In the display method of character string echo, which is transferred to the graphic data display processing unit and displayed on the display device according to the command, an identifier indicating the last command to be analyzed in the above command group is included in the command group, and this identifier The parsed command is held until the command processing unit recognizes the identifier, and when the command processing unit recognizes the identifier, the held command group is collectively transferred to the graphic data display processing unit. It is characterized by the following.

[0011]Furthermore, the command processing section and the graphic data display processing section are connected through a common memory functioning as an interface, and the analyzed command is held in the common memory. be.

0012

[Operation] The display method of the string echo configured above is as follows:
The analyzed commands are not transferred to the graphic data display processing unit each time the command analysis is completed, but the graphic data display processing is performed at once when the analysis processing of all commands that make up the command group is completed. transferred to the department. Therefore, since a plurality of analyzed commands are transferred to the graphic data display processing section in one transfer process, the display time can be shortened.

[0013]

Embodiments Next, embodiments of the present invention will be described with reference to the drawings. FIG. 1 shows a display device 10 to which a character string echo display method is applied, which is an embodiment of the present invention. Note that since the display device 10 has many configurations in common with the display device 2 described using FIG. 4, the same components as the display device 2 described using FIG. do.

The display device 10 has a command processing section 1
1, common memory 12, graphic data display processing section 13, video processor 6, CRT (cathode ray t
7 etc. Command processing section 1
1 analyzes commands supplied from the host computer 1 and controls the transfer of data from the common memory 12 to the graphic data display processing section 13. This command processing unit 11 is composed of a processor that operates according to a processing program to be described later, and an internal memory 14. Similar to the common memory 4 shown in FIG. 4, the common memory 12 includes a command processing section 11 and a graphic data display processing section 13.
It functions as an interface between the two, and is configured to be able to simultaneously transfer a plurality of data to the graphic data display processing section 13. In addition, the graphic data display processing section 13
The system also allows multiple data to be input at once, and display processing can be performed based on this data. In addition, the video processor 6, CRT (cathode ray tube)
e) 7 has the same configuration as that used conventionally.

Now, assume that the host computer 1 issues commands 1 to 3 as a group of commands related to character string echo to the display device 2. FIG. 3 shows a group of commands supplied from the host computer 1 to the command processing section 11. As shown in the figure, command 1
A first parameter is assigned to the beginning of ~3, and a last parameter is assigned to the end. The first parameter and last parameter are parameters that are always given when a command is issued from the host computer 1 to the command processing section 11.

When the command processing unit 3 receives commands 1 to 3 from the host computer 1, it executes command processing according to the processing program shown in FIG. The operation of the command processing section 3 will be explained below based on FIG. 2.

The command processing section 3 starts the processing shown in FIG. 2 by recognizing the first parameter. First, the command processing unit 3 determines whether the supplied data is the last parameter (step 10; hereinafter, step is abbreviated as S). If the supplied data is not the last parameter, the supplied data is a command, so
The command is read in S20, and the command is analyzed in S30 to generate data necessary for character string echoing (echo index, echoing position, echoing state, etc.). Next, the command processing section 3 stores the analyzed command in the internal memory 14 in the command processing section 11 (S40), and then transfers the stored data to the common memory 4 (S50).

The above processing of S10 to S50 is continued until the command processing section 3 recognizes the last parameter. Therefore, analysis processing is executed for all commands (commands 1 to 3 in this embodiment) supplied from the host computer 1, and the analyzed commands are transferred to the common memory 12. At this time, even if the analysis processing of one command (for example, command 1) is completed, the command processing unit 3 does not issue an instruction to transfer this command 1 to the graphic data display processing unit 13 as in the conventional case, but instead Maintain the state stored inside. Therefore, in the state in which the last parameter is recognized in S10, all the commands that have been analyzed are held in the common memory 12.

When the last parameter is recognized in S10, the command processing unit 11 issues a display request to the graphic data display processing unit 5, and transfers the commands held in the common memory 11 to the graphic data display processing unit 13 in a batch. . As mentioned above, the analysis processing of all commands supplied from the host computer 1 has been completed with the last parameter recognized, and all the commands for which analysis processing has been performed are held in the common memory 12. It has become. Therefore, by performing the transfer process using recognition of the last parameter as a trigger, all commands can be transferred to the graphic data display processing section 5 in one transfer process. As a result, the transfer process, which conventionally required the number of commands that make up the command group (three in this example), can be performed in one go, reducing transfer time. Since this can be realized, display processing of character string echoes can be performed at high speed.

The graphic data display processing section 5 is configured to be able to process a plurality of data in parallel, so that the transferred commands are processed in parallel and sent to the C through the video processor 6.
Displayed on RT7.

In the above embodiment, the commands held in the common memory 11 are collectively transferred to the graphic data display processing section 13 using the last parameter as an identifier, but the identifier is limited to the last parameter. Instead, other identifiers may be assigned depending on the composition of the command group.

[0022]

Effects of the Invention As described above, according to the present invention, all commands constituting a command group are transferred to the graphic data display processing unit at once when the analysis process is completed, so that the data can be transferred in one transfer process. Since a plurality of analyzed commands are transferred to the graphic data display processing unit, the display time can be shortened.

[Brief explanation of the drawing]

FIG. 1 is a configuration diagram of a display device to which a character string echo display method is applied, which is an embodiment of the present invention.

FIG. 2 is a flowchart showing processing operations executed by a command processing unit.

FIG. 3 is a diagram showing the configuration of a command group.

FIG. 4 is a configuration diagram of a display device to which a conventional character string echo display method is applied.

[Explanation of symbols]

6 Video processor 7 CRT 10 Display device 11 Command processing section 12 Common memory 13 Graphic data display processing section 14 Internal memory

Claims (2)

[Claims] 1. A command processing unit (11) sequentially analyzes a command group consisting of a plurality of commands issued by a host computer (1), and sends the analyzed commands to a graphic data display processing unit (13). In a string echo display method in which the command is transferred and displayed on the display device (6, 7) according to the command, an identifier indicating the last command to be analyzed in the command group is included in the command group, and The parsed commands are held until the command processing unit (11) recognizes the identifier, and when the command processing unit (11) recognizes the identifier, the group of held commands is collectively stored. A character string echo display method characterized in that the character string echo is transferred to the graphic data display processing section (13). 2. The command processing unit (11) and the graphic data display processing unit (13) are connected via a common memory (12) that functions as an interface, and the common memory (12) stores the analyzed data. 2. The method for displaying character string echoes according to claim 1, wherein a command is retained.