JPS63202487A - Reprint control mechanism - Google Patents

Abstract

PURPOSE:To obtain a reprint equivalent to initial print efficiently, even if reprint is started from a line data which wait for a line feed command dependent on an immediately preceding line position, by storing page head line information and utilizing that information for reprinting. CONSTITUTION:If page turning occurs before a print line determining means 3 determines a printing line position, a page head line table registering means 6 is informed of page turning to store a page head line information into a page head line table 7 every time page turns, thus recording head line information of each page in pair with page number. Reprint page information take-out means 8 retrieves the page head line table 7 with a page number passed as a value for specifying the reprint page being employed as a key, so as to obtain a page head line information of that page. A reprint data synthesizing means 9 receives the information and produces a line data being printed at the start of reprinting from a stored position information. Then the reprint line data is passed to a line data print instructing means and normal processing is carried out, i.e. reprint is started through a reprint line determining means 3, a printing means 4 and a printer 5.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an operational processing control mechanism for a computer system, and more particularly to a reprint control mechanism after an error during pattern printing.

[Conventional technology]

Conventionally, computer processing results were not directly printed by a user program to a printing device, but the user program temporarily wrote the print data to a storage device, and after the user program was finished, the computer system printed the data all at once on the printing device. was printed on. - Since the user program and the person related to the user program are not observing the computer system when printing patterns, even if an error occurs in the printing device, it is necessary to continue printing after the page where the printing error occurred. There is. In the case of a printing abnormality, the data on several pages near the page where the abnormality occurred is often not printed correctly, so the pages must be printed backwards. At this time, it was the user's responsibility to align the line positions within the page when reprinting the print data. In other words, if a page break is desired, a page break designation is inserted into the print data, and by reprinting the print data from the middle, the image is printed with the same image as when it was printed from the beginning. However, when printing data that exceeds a page due to a line break instruction is reprinted from the middle of the print data, the line position within the page becomes incorrect until the page break instruction is issued.

Alternatively, it is necessary to recalculate the line position from the beginning of the print data to ensure that it prints at the correct line position even when printing from the middle, and then perform the process of actually printing from the specified reprint page. Ta.

Note that print data can be divided into lines,
Line data consists of line feed instructions and print text.

[Problem that the invention seeks to solve]

In the conventional batch printing mechanism described above, it is not possible to align the line of a page starting with an arbitrary line break when reprinting.
Alternatively, there is an inefficiency in that the print data must be read again from the beginning to calculate the line position.

Creating print data that is variable with respect to the print layout is a great advantage in terms of form operation, but there is the above-mentioned problem with reprinting, so if you want to print in the correct line position in batch printing, you should change the print data The disadvantage is that the print layout must be fixed when creating a .

An object of the present invention is to provide a reprint control mechanism that always reprints correctly.

[Means for solving problems]

The reprint control mechanism of the present invention includes a print line data extraction means, a line data print instruction means for instructing to print one line of print data extracted from the print line data extraction means, and a line feed specification included in the line data. and a print line determining unit that calculates a line position at which the corresponding line data should be printed from the immediately preceding print line position; a printing unit that prints the line data on a printing device according to the line position; and a print line position of the first line of the page. and a page top line table that stores page top line information for each page, including the storage position of the line data corresponding to the top of the page, and a page top line table that stores page top line information when the line position causes a page break. a page top line table registration means for registering; a reprint page information extracting means for searching the page top line table using an externally given reprint page designation value as a key to obtain page top line information of the corresponding page; Retrieving print line data from the print line data retrieval means using the line data storage position in the line information, and combining the text of the retrieved line data with line feed information regarding the print line position in the page top line information. and reprint data synthesis means for creating reprint line data.

〔Example〕

Next, the present invention will be explained with reference to the drawings.

FIG. 1 is a block diagram showing an embodiment of the present invention. In the same figure, print line data retrieval means 1 is a storage device that temporarily stores print data that a user program attempts to print in bulk, and when starting batch printing, all the print data of one user program is stored. is held. Although print data has a structure in which data is arranged sequentially, this storage device often allows direct addressing. Even in a storage device that can only be accessed sequentially, reverse reading allows the target data to be read out uniquely and efficiently, so it is considered to be equivalent to direct addressing. In the following, a case where direct addressing is possible will be explained.

- When a pattern printing instruction is given, the print data stored in the print data retrieval means 1 is read out in line data units by the line data print instruction means 2. Line data is an information unit consisting of a line feed or page break designation and print text, and multiple sheets of this data are combined to form print data created by one user program. When the line data print instruction means 2 reads one line data, it delivers the line data to the print line determination means 3 and requests the printing device to print the line data. Repeat this until the print data is exhausted.

The print line determining means 3 determines at which line position from the top of the page the text in the line data is to be printed based on the internally stored current line number within the page and the line feed instruction included in the line data. This line position and the text in the line data are delivered to the printing means 4, and the text in the line data is printed at the line position specified by the printing device 5.

When a line position to be printed is determined in a print line determining means 3, when a page change occurs, a page start line table registration means 6 is notified of the occurrence of a page change.

The information to be notified at this time is (a) page number (b) line position to be printed (C) text printing and line feed priority (d) corresponding line data in the print data storage means 1 that stores the line data This is page first row information consisting of data addresses in the storage device.

The page top line table registration means 6 stores page top line information in the page top line table 7 at each page change. The page first row table 7 records the first row information of each page in pairs with the page number.

When the printing device malfunctions, the printer or program inputs to this mechanism the number of pages to be reprinted as a reprint page designation.

The reprint page information extraction means 8 indexes the page top line table 7 using the page number passed as the reprint page designation value as a key, and obtains the page top line information of the corresponding page.

The reprint data synthesis means 9 receives this information and uses the storage location information to obtain line data to be printed at the start of reprinting. Reprint line data is created by combining the print text part of the obtained line data, the "line position" in the page top line information, and the "priority order of printing and line feed". Then, the reprint line data is passed to the line data print instruction means 2 and normal processing is performed.
That is, reprinting is started using the print line determining means 3, the printing means 4, and the printing device 5. At this time, since the read line data position has already been set in the print data storage means 1 by the reprint data synthesis means 9, the line data print instruction means 2 successively extracts and prints subsequent line data as usual. This enables reprinting with the same layout as the first print.

Note that in this example, the number of pages was specified and reprinting was performed from the top of the page, but when specifying a line and reprinting, this mechanism is used to position it to the top of the page and print up to the specified line. All you need to do is to extract the line data, decide which line to print, and then print as usual.

〔Effect of the invention〕

As explained above, the present invention saves page top line information and uses it when reprinting, so that even if reprinting is started from line data with a line feed instruction that depends on the previous line position, it will not be the same as the first printing. This has the effect that equivalent reprinting results can be obtained efficiently.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an embodiment of the present invention. DESCRIPTION OF SYMBOLS 1...Print line data extraction means, 2...Line data print instruction means, 3...Print line determining means, 4...Printing means, 5...Printing device, 6...Page top line Table registration means, 7,':1 no

Claims (1)

[Scope of Claims] Print line data retrieval means; line data print instruction means for instructing printing one line of print data retrieved from the print line data retrieval means; line feed specification and immediately preceding line included in the line data. printing line determining means for calculating the line position at which the corresponding line data should be printed based on the print line position of the line, printing means for printing the line data on a printing device according to the line position, and the print line position of the first line of the page and the top of the page. A page top line table that stores page top line information for each page, including the storage position of the line data corresponding to , and a page that registers page top line information in the page top line table when the line position causes a page break. a first line table registration means; a reprint page information extracting means for searching a page first line table using an externally given reprint page designation value as a key to obtain page first line information of a corresponding page; The print line data is retrieved from the print line data retrieval means using the line data storage position in the middle, and the text of the retrieved line data is combined with the line feed information regarding the print line position in the page top line information for reprinting. A reprint control mechanism comprising a reprint data synthesis means for generating line data.