JPH02217281A - Printer controller - Google Patents

Abstract

PURPOSE:To accurately execute an error recovery by collating a counted value with a page number from an information processing system by a page counter for number of printed pages and a collator to detect an error, and transmitting an error generation to the system. CONSTITUTION:A page counter 21a receives data from an output unit 14, counts up each time the data amounts to one page and records the number of printed pages. A collator 21b acquires page number data when the data read from a page buffer 13 is corresponding page number data, and collates whether the page number coincides with a value obtained by subtracting '1' from the counted value of the counter 21a or not. In case of discordance, an error generation to a fault detector 18A is notified as page number discordance, the detector 18A receiving it informs an error to an information processing system 11 via a transmitter 19. Thus, the system 11 knows the error, stops transmission of a next kanji data, and performs an error recovery.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a printer control device that outputs character data sent from an information processing system to a printer device.
In particular, the present invention relates to a printer control device that improves page number printing control.

[Prior Art] FIG. 3 is a block diagram showing a conventional printer control device. In the figure, 11 is an information processing system, 12 is a receiving unit that receives kanji data sent from the information processing system 11, and 13 is a block diagram showing a conventional printer control device. 13a is a page counter that counts the number of pages of kanji data remaining in the page buffer 13 based on the input/output data of the page buffer 13; 14 is a character This is an output section composed of a font memory 15 that stores patterns and a line bit buffer 16 that stores one line of Kanji data. 17 is a printer that prints the kanji data from the line pit buffer 16; 18 is a failure detection unit; this failure detection unit 18 is
a failure detection means 18a for detecting an error in the output unit 14;
page number detection means 18b for checking the number of pages remaining in the page buffer 13 using a page counter 13a;
and an error code setting means 18c. 1
Reference numeral 9 indicates a transmitting unit that reports the error content and page number from the failure detection unit 18 to the information processing system 11, and 20 indicates the receiving unit 12. Page buffer 13. Output section 14. Fault detection unit 18. This is a printer control device composed of a transmitting section 19.

Next, the operation will be explained. In fig.

When one line of kanji data is sent from the information processing system 11, the receiving unit 12 temporarily stores it.

Transfer to page buffer 13. This is repeated for multiple lines, and when more than one page worth of kanji data is accumulated in the page buffer 13, reading from the page buffer 13 is started, and the font memory 15 converts it into a character pattern.
It is sent to the line pit buffer 16. The data in the line pit buffer 16 is then output to the printer 17 and printed.

The reception process of storing the kanji data in the page buffer 13 and the output process of reading out the kanji data from the page buffer 13 and printing them are performed in parallel. Fault detection unit 1
8 detects a failure in the output unit 14 by the failure detection means 18a and determines the content of the failure, and the page number detection means 18b checks the number of pages of the kanji data remaining in the page buffer 13 via the page counter 13a. .

The error hood setting means 18c sets an error code based on the content of the failure and the number of pages, and sends it to the transmitter 19. The transmitter 19 then transmits the error code sent from the failure detector 18 to the information processing system 11 according to predetermined rules.

Next, the operation when an error occurs will be explained.

Error information such as a parity error generated by the logic circuit of the font memory 15 or the line pit buffer 16 is detected by the fault detection means 18a of the fault detection section 18, and the content of the fault is determined. And page number detection means 18
Check whether data remains in the page buffer 13, and if there is, record the number of pages; if not, set the page number to 0; at the same time,
The error code setting means 18c, which records where and what kind of failure is caused by the error contents, sets an error code according to the error contents and the number of pages, and transmits the error code to the transmitter 19.
tell to.

The information processing system 11 uses this error information (number of pages)
By obtaining this information, it is possible to determine how many pages to go back to, and based on this, the kanji data will be retransmitted.

[Problems to be Solved by the Invention] Conventional printer control devices are configured to manage page counts based on the number of pages of data remaining in the page buffer 13 (count value of the page counter 13a) as described above. Therefore, depending on the type of error and the timing of occurrence of the error, errors may occur in the page count, resulting in problems such as the information processing system 11 not being able to accurately perform error recovery.

The present invention has been made in order to solve the above-mentioned problems, and it is an object of the present invention to provide a printer control device that can accurately manage the printed page count and accurately perform error recovery.

[Means for Solving the Problems] A printer control device according to the present invention includes a page counter that is incremented each time one page of character data is sent from a receiving section or an output section, and a count value of the page counter. and a collation unit that collates the page number sent together with the character data from the information processing system, and the collation unit notifies the failure detection unit of an error when the count value and the page number do not match.

[Function] In the printer control device according to the present invention, when one page of character data is sent from the receiving section or the output section,
A page counter counts up the number of printed pages. Then, in the verification section, the count value obtained by the page counter is verified against the page number sent from the information processing system, and if they do not match, the verification section sends an error notification to the fault detection section. It will be done. Then, the failure detection unit transmits the count value of the page counter and a notification that an error has occurred to the information processing system through the transmission unit.

[Embodiment of the Invention] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. 1st
The figure is a block diagram showing a printer device according to an embodiment of the present invention. In the figure, the same reference numerals as those already described indicate the same parts, and therefore, the explanation thereof will be omitted.

In FIG. 1, 18A is a failure detection unit, and this failure detection unit 18A is used when it detects an error in the output unit 14 as in the conventional case, and when it receives an error notification from the page number management unit 21, which will be described later. Then, the content of the error and the number of pages are reported to the information processing system 11 via the transmitter 19.

In addition, 21 is a page number management section, and a page counter 2
1a and a matching section 21b. The page counter 21a counts up and records the number of printed pages each time one page of character data is sent from the output section 14. The collation unit 21b is configured to check the information processing system 1 stored in the page buffer 13.
The page number from 1 is read out, this page number is compared with the count value of the page counter 21a, and if these do not match, an error notification is sent to the failure detection unit 18A.

Note that 20A is the receiving section 12. Page buffer 13, output section 14. The printer control device of this embodiment is composed of a failure detection section 18A, a transmission section 19, and a page number management section 21.

Next, the operation of the apparatus of this embodiment will be explained.

In FIG. 1, when one line of Kanji data (character data) and the page number data are sent from the information processing system 11, the receiving unit 12 temporarily stores them and transfers them to the page buffer 13.

This is repeated for multiple lines, and when one page or more of kanji data is accumulated in the page buffer 13, reading from the page buffer 13 is started, and the data converted into a character pattern is outputted to the printer 17 through the output unit 14. and printed. It should be noted that the above-described reception process of storing Kanji data in the page buffer 13 and output process of reading and printing the Kanji data from the page buffer 13 are performed in parallel as in the conventional art.

At this time, the page counter 21a receives data from the output unit 14, counts up each time the data reaches one page, and records the number of printed pages.

Then, when the data read from the page buffer 13 is the page number data, the collation unit 21b takes in the page number data, and matches the same page number with the value obtained by subtracting 1 from the count value of the page counter 21a. Check to see if they match. If there is a mismatch, the failure detection unit 18A determines that the page numbers do not match.
Upon receiving the notification, the failure detection unit 18A sends a notification to the information processing system 1 through the transmission unit 19.
Report the error to 1.

As a result, the information processing system 11 becomes aware of the occurrence of an error, stops transmitting the next kanji data, and recovers from the error.

Further, when the output unit 14 detects an error in the printer 17, the failure detection unit 18A detects this and reports the error from the transmission unit 19 to the information processing system 11, as in the conventional case. At this time, the information processing system 11 reads the count value of the page counter 21A of the page number management section 21 and learns on which page the error has occurred. From this count value, the information processing system 11 can know the page number of the kanji data to be retransmitted.

As described above, according to the apparatus of this embodiment, the page number management section 21 manages the printed page numbers, and by comparing the printed page numbers with the page numbers sent from the information processing system 11, errors can be detected. 21a allows the information processing system 11 to accurately determine the page number to be recovered, and by retransmitting the character data corresponding to that page number, it is possible to prevent missing printed pages and double printing.

In the above embodiment, the page number management section 21 is provided in the output section 14 to manage outputted page numbers, but as shown in FIG. By providing this, the page numbers transmitted from the information processing system 11 and received by the printer control device 20A can be managed, and the same effects as in the above embodiment can be achieved.

[Effects of the Invention] As described above, according to the present invention, a page counter for counting the number of printed pages is provided.

The matching unit detects an error by comparing the count value of the page counter with the page number from the information processing system, and if an error occurs (in the case of a mismatch), the page counter is counted through the failure detection unit and the transmission unit. Since the configuration is configured to send the information that an error has occurred along with the value to the information processing system, the information processing system can accurately determine the page number to be recovered, and print by retransmitting the character data corresponding to that page number. This has the effect of preventing missing pages and double printing.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing a printer control device according to an embodiment of the present invention, FIG. 2 is a block diagram showing a printer control device according to another embodiment of the invention, and FIG. 3 is a block diagram showing a conventional printer control device. It is a block diagram. In the figure, 11-information processing system, 12-receiving unit,
13-page buffer (storage means), 14-.output section,
17-printer, 18A-failure detection unit, 19-transmission unit,
20A-Printer control device, 21-Page number management section, 21a-Page counter. 21b-verification section. In addition, in FIG. 1, the same reference numerals indicate the same or corresponding parts.

Claims (1)

[Claims] a receiving unit that receives character data sent from an information processing system; a storage unit that stores one or more pages worth of character data received by the receiving unit; and an output unit that reads character data from the storage unit and outputs it to a printer; A failure detection unit detects a failure in the output unit, and a transmission unit sends the failure detected by the failure detection unit to the information processing system, and the reception unit performs a reception operation and the output unit outputs to a printer. In a printer control device that performs operations in parallel with
a page counter that is counted up each time a page's worth of character data is sent out; and a verification unit that matches the count value of the page counter with a page number sent together with the character data from the information processing system; A printer control device characterized in that the collation unit notifies the failure detection unit of an error when determining that the count value and the page number do not match.