JPS60220420A - Input/output interface control device - Google Patents

Abstract

PURPOSE:To shorten the command analyzing time by providing a command decoder sorting the commands received from a host computer into every function to a command reception part. CONSTITUTION:A command reception part 13 includes a command decoder part 15 which sorts the received commands into every function and outputs the sorted result and those received commands to a command analyzing part 21. The part 21 analyzes and sort roughly the commands according to the function sorting codes stored in a register and selects a channel command based on the rough sorting. Then command processing parts 221-22n corresponding to selected channel commands are started, and the output signals of these command processing parts are outputted to a print control part 24.

Description

DETAILED DESCRIPTION OF THE INVENTION (Technical Field) The present invention relates to an I10 interface control device that allows a printer control device to analyze commands from a host system and perform predetermined processing in a short time.

(Conventional technology) As a conventional I10 interface control device.

For example, as shown in FIG. 1, there is one that is connected between a host computer 1 and a printer control device 20 that controls a printer device 2. The I10 interface control device 10 includes a receiving section 13 composed of a command receiving section 11 that receives channel commands for print operation instructions sent from the host computer 1 and a data receiving section 12 that receives print data, and a printer side The host computer 1 includes a transmitting section 14 that sends signals such as a report of the completion of an operation to the host computer 1. The printer control device 20 also includes a command analysis section 21 that analyzes commands from the reception section 13, and a command processing section 22 that is selected according to the command analyzed by the command analysis section 21. ~
22. , a data processing section 23 that processes data from the data receiving section 12 in accordance with the mechanism of the printer device 2, and a print control section 24 that drives and controls the printer device 2 according to data contents and command contents. .

Note that the printer device 2 is a line printer.

There are electrophotographic printers, inkjet printers, thermal printers, discharge destruction printers, etc.

In the above configuration, after checking the validity of the command input to the channel command receiving section 11 sent from the host computer 1, the command analyzing section 2
1, and the contents of the command are analyzed. Command processing unit 22 according to the parsed command. 22 is selected, and the processing according to the command is executed. on the other hand.

Print data from the host computer.

After being received by the data receiving section 12, the data is transferred to the data processing section 23, where predetermined processing is performed, and then the command processing section 22. It is output to the print control section 24 together with an output signal of ~22%. The print control section 24 controls the printer device 2 to perform printing, and also sends a status signal to the transmission section 14. The transmitter 14 outputs the received signal to the host computer 1.

However, in the conventional I10 interface control device, the command receiving section only checks the validity of the command to determine whether the command is valid or invalid and passes it to the command analysis section, and the command analysis section serially processes the received command. Because it is being analyzed.

There was an inconvenience that the processing time of the command analysis section became long.

(Object and Structure of the Invention) The present invention has been made in view of the above, and an object thereof is to provide an I10 interface control device that can shorten the analysis processing time in a command analysis section of a printer control device.

(Example) Hereinafter, an I10 interface control device according to the present invention will be explained in detail.

FIG. 2 shows an embodiment of the present invention. The same parts as in FIG. The command receiving section 13 is provided with a command decoder section 15 for passing the received command to the command analyzing section 21.

FIG. 3 shows the command decoder unit 15, which includes a command decoder 16 that frequently outputs received commands by function, and a command decoder 16 that temporarily stores the classified output from the decoder I6 and then sends it to the command analysis unit 21 of the printer control device 20. , and an output register 17. Note that the command receiving section 11 has the following information.

The received command is temporarily stored and the command processing unit 2
2. A register 18 is provided for transferring and outputting data to 22, . For example, if the command decoder 16 has a function of broadly classifying into five function groups A-H, the command decoder 16 classifies the function classification code corresponding to the channel command into one of the five functions, extracts it, and registers it. 17 to the command analysis section 21 for general classification. When classifying, the command decoder 16 refers to the bits of the channel command using the channel command table shown in FIG. 5 and extracts the two-function classification code. Also.

The received channel command is sent via the register 18 to the command processing unit 22. ~22? applied to L.

Among these, those corresponding to each channel command are selected according to the results of the broadly classified command analysis unit 21.

In the above configuration, the explanation of the operation that overlaps with that in FIG. , and sent to the command decoder 16.

The command decoder 16 refers to the channel command table shown in FIG.
Activate. The command analysis unit 21 analyzes the commands into major categories based on the function classification code stored in the register 17, selects a channel command stored in the register 18 based on this major category, and selects the channel command stored in the register 18. Command processing units 22° to 22. ．．
．． ．． Select and start. Started command processing unit 22
．． A neutral force signal of 221 to 221 is output to the print control section 24.

(Effects of the Invention) As explained above, the I10 interface control device of the present invention has the function of classifying commands received from the host computer into functional units, and since the i-command decoder is provided in the command receiving section, printer control is possible. The time required for command analysis processing in the device can be shortened and command processing can be facilitated.・

[Brief explanation of drawings]

FIG. 1 is a block diagram showing a conventional I10 interface control device and peripheral configuration, FIG. 2 is a block diagram showing an embodiment of the present invention, and FIG. 3 is a block diagram showing details of a command decoder section according to the present invention. , FIG. 4 is a block diagram showing the configuration of a command analysis section, and FIG. 5 is a focus configuration diagram of a channel command table set in the command decoder section according to the present invention. Explanation of symbols 1: host computer. 2... Printer device. 10...I10 interface control unit. 11... Command receiving section. 12... Data receiving section, 13... Receiving section. 14... Transmission section, 15... Command decoder section. 16...Command decoder. 17.18...Register. 20...Printer control device. 21...Command analysis section. 22-22...Command processing unit. 23...Data processing section. 24...Print control unit. Figure 1 Cause 3 4N Figure 5

Claims (1)

[Scope of Claims] A printer control device that controls a printer by analyzing commands sent from a host system in a command analysis section, and an interface between the printer control device and the host system that is located between the printer control device and the host system. In an online printer system equipped with an I10 interface controller that controls. 110 interface control device, further comprising a command decoder that classifies commands received from the host system into a plurality of functional units and outputs the classified commands to the command analysis section.