JPS58212976A - Printing device - Google Patents

Abstract

PURPOSE:To prevent enlargement of an overhead of software, in a printing device in which a common title message can be printed on the head of each page, by providing a message buffer which stores the title message and a function which automatically prints the message on a specified line. CONSTITUTION:A printing device is constituted by the following parts; an order control circuit 11 which controls an operating command from a control device 1; a line buffer 12 which stores printing characters for one line; a message buffer 13 which stores a title message; a printing part 19, a buffer switching circuit 14 which switches the data sent from the control device 1 to the line buffer 12 or the message buffer 13 depending on the output of the order control circuit 11; a message switching circuit 15 which switches the line buffer 12 or the message buffer 13 with regard to the data to be outputted to the printing part 19 in response to the output of the order control circuit 11; and a page counter 17 which indicates a page number.

Description

DETAILED DESCRIPTION OF THE INVENTION (1) Description of the technical field to which the invention pertains The present invention relates to a printing device constituting an information processing system. The present invention relates to a printing device that has a function of automatically printing on images.

(22 Description of the Prior Art) Conventionally, in a printing device that has a line buffer that stores one line of print characters and prints on a line-by-line basis, even if the title message is common to each page, each It was necessary to transfer data to print at the top of the page.Therefore, the software overhead was large.

Well, printing devices that are usually called page printers use software to synthesize one page's worth of information and print it out, but even in this case, there was a lot of overhead due to software processing. .

(3) Detailed Description of the Invention The present invention has been made in view of the above-mentioned conventional circumstances.
Therefore, an object of the present invention is to solve the above-mentioned drawbacks by providing a message buffer for storing a title message and a function to automatically print the title message on a designated line.After setting information in the message buffer,
When it comes to software, our goal is to provide a new printing device that can print the title message.

(4) Structure of the Invention In order to achieve the above object, the printing apparatus of the present invention includes an order control circuit that interprets operation commands, a line buffer that stores one line of characters, and a message buffer that stores a title message. a buffer switching circuit for switching between sending the data sent from the control device to the line buffer or the message buffer in accordance with the output of the order control circuit; The message switching circuit is configured to switch between the output of the line buffer and the output of the message buffer.

(5) Detailed Description of the Invention Next, a preferred embodiment of the present invention will be explained in detail with reference to the drawings.

FIG. 1 is a block diagram showing one embodiment of the present invention. In the figure, a printing device 2 showing an embodiment of the present invention is
Control device [An order control circuit 11 that controls operation commands fl+l from 1, a line buffer 12 that stores one line of printed characters, a message buffer 13 that stores a title message tm, a printing unit 19, and a control device The data sent from the order control circuit 11 is sent to the line node (the power λ to be sent to the buffer 12, the message buffer 13
The output switching circuit 14 and the output of the order control circuit 11 are used to select whether the data to be output to the printing section 19 is either sent to the line (to 12) or message (to 13). - a message switching circuit 15 for switching the page number and a page counter 1 for indicating the page number.
It is composed of 7 or more stops.

FIG. 2 is a flowchart showing the operation of the control device 1 shown in FIG. 1 related to the operations necessary for the present invention, and software (not shown; the same applies hereinafter).
The i1+ s1 device 1 that receives the command from &lI I+ is
It is configured to process an initial setting command 101, a page break command 102, a message registration command 103, and a one-line printing command 104.

Continuing to refer to FIGS. 1 and 2, when the city control device 1 receives the initial setting command 101 from the software, it clears the page counter 17 @0" and prints the first position of the line (
Not shown. (The same applies below) or the maximum number of print lines per page (not shown; the same applies below).

Next, the control device 1 receives a page break command 10 from the software.
2 is received, a page break command 116 is sent to the printing device 2, the paper of the printing device 2 is set to the position where printing is possible at the beginning of the page, and the page counter 17 is incremented by 1 at the adder]8 due to the page feed operation. and clears the print line counter to '0''.

Next, the control device w1 sends a message registration command 103 using the title message, message print designation line, and page embedding position as data (not shown) from the software.
When the message data set command 1 is sent to the order control circuit 11 using the order signal line 3 to the printing device 2,
Send 17. In the printing device 2, the order control circuit 11 decodes the order, switches the buffer 'yJ switching circuit 14 to the message buffer 13 side, transfers the title message on the data signal line 4 to the message buffer 13, and transfers the page embedding position and data. is set in the page embedding position designation register 16.

Next, the control device 1 issues a one-line print command 1 from the software.
When 04 is received, the print line counter is compared and 105.
106. If it matches the specified message print line, send a message print command 109 to the order control circuit 11 using the order signal line 3. The printing unit wt, 2 decodes the order in the order control circuit 11, sets the contents of the page counter 17 to the position of the message embedding position designation register 16, and outputs the message by the message switching circuit 15. It switches to select the data on the sofa 12 side, and outputs a printing operation command to the printing unit 19 via the printing signal line 5.

The printing section 19 prints one line of the contents of the message buffer 13 indicated by the message switching circuit 15. Control device 1
When the print operation command is received, the meter signal line 3
is used to send a one-line print command 111 for taking the one-line print command requested by the software to the order control circuit 11. The order control circuit 11 decodes the order, sets the buffer switching circuit 14 to the line buffer 12 side, and sets the message switching circuit 15 to the line buffer 12 side.
side, and outputs a printing operation command to the printing section 19. When the printing operation of the printing unit 19 is completed, the control device 1 counts the number of printed lines 112 and enters a state of waiting for the next command from the software. When the control unit [1 receives a one-line print command 104 from the software, it compares the print line counter, the print line start position, and the message print designated line 105.
If there is a mismatch in step 106, a one-line printing command 111 is output to the order control circuit 11 using the order signal line 3, and the same one-line printing operation as described above is performed.

When printing within one page is completed, the control device 1 clears the print line counter to "0"', sends a page break command 114 to the printing device 2, and moves the paper of the printing device 2 to the printable position at the beginning of the page. , the adder 18 increments the page counter 17 by 1 due to the page break, and the program enters a state of waiting for the next command from the software.

When the next one-line print command 104 is received from the software, the -print line counter is cleared to ``0'' 114, and the message print specified line is checked 105.1.
06, a message print command 109 is issued from the control device 2, and the title message with the aforementioned page number counted up is output.

(6) Detailed Description of the Invention As explained above, the present invention stores a common title message for each page in advance and automatically prints it at the top of each page, thereby performing software processing. Another advantage is that the overhead of title message output or page management can be reduced.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing one embodiment of the present invention, and FIG.
This figure is a partial flowchart of the operation of the control device 10 shown in FIG. 1 necessary for the present invention. 1... Control device, 2... Printing device, 3
......Order signal line, 4.6...Data signal line, 5...Operation signal line, 11...
Order control circuit, 12...Line buffer, 1
3...Message buffer, 14...
Buffer switching circuit, 15...Message switching circuit, 16...Page embedding position specification register, 1
7...Page counter, 18...Adder, 19...Printing section Patent 111 Applicant: NEC Co., Ltd. Attorney: Patent attorney Yutabe Kumagai 1st Thought

Claims (1)

[Claims] an order control circuit that interprets operation commands from the control device;
A line buffer that stores characters for one line, a message buffer that stores a title message, and a device that switches whether to send data from the control device to the line buffer or to the message buffer depending on the output of the order control circuit. a buffer switching circuit; and a message switching circuit for switching between sending the output of the two in-buffers and sending the output of the message buffer to the printing unit according to the output of the order control circuit. Device.