JPH02292623A - Page printer with priority function - Google Patents

Abstract

PURPOSE:To print priority data with a priority flag prior to general data by installing a priority data buffer apart from a general data buffer and preferentially processing data on the priority data buffer. CONSTITUTION:When data Pd is inputted to a distributor 1, the distributor 1 checks whether the priority flag exists in the head of data. When the priority flag exists as a result, the distributor 1 transmits data to the priority data buffer 2. When it does not exist, data is transmitted to the general data buffer 3. Then, a data transfer controller 4 first searches data to the buffer 2, and decides the presence or absence of priority data. When there is data, the data is transmitted to a page buffer 5. When there is no data, data is searched in the buffer 3. When there is data, the data is transmitted to the fubber 5. When data of the buffer 5 are accumulated for one page, printing is executed. Thus, priority data can be printed prior to other general data.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a printer, in which a page printer K prints received data page by page, printing priority data with priority over non-priority general data. Regarding a page printer with priority function.

(Prior Art) Conventionally, this type of printer does not have a priority function for printing priority data with priority.

FIG. 8 is a block diagram showing an example of a conventional page printer.

FIG. 4 is a flowchart showing the sequence of operations of the page printer of FIG.

In FIG. 8, data Pd is input to the reception buffer 31 (step 41).

Next, data is transferred from the reception buffer 51 to the page buffer 32 (step 42).

When data for one page is accumulated in the page buffer 32, printing is performed (step 43).

(Problem to be Solved by the Invention @) The conventional printer described above prints page data in the order in which it is received. Therefore, even if there is data to be printed first, there is a drawback that it cannot be interrupted and printed first.

SUMMARY OF THE INVENTION An object of the present invention is to eliminate such drawbacks and provide a page printer with a priority function that can print priority data with a priority flag before data without a priority flag.

(B Rounding Means to Solve the Problem) In order to achieve the above object, the page printer with priority function of the present invention is equipped with a buffer and a page buffer, and prints data received from the outside page by page. a distributor 1 that divides and outputs the given data Pd into priority data and non-priority data K;
A priority data buffer 2 that stores the priority data output from the distributor 1; a general data buffer 3 that stores general data that is not the priority data output from the distributor 1; The configuration includes a data transfer controller 4 that sends data to the page buffer 5 with priority over data stored in the primary data buffer 3.

(Implementation row) Next K1 The implementation row K of the present invention will be explained with reference to the drawings.

FIG. 1 is a block diagram illustrating one implementation of the present invention.

FIG. 2 is a flowchart showing an example of the operation of the embodiment of FIG. Note that A, B, and C surrounded by circles in FIG. 2 are connected to locations with the same reference numerals in the same figure, respectively.

As shown in FIG. 1, this implementation sequence includes a distributor 1 that divides received data Pd into priority data and non-priority data and outputs them, and a priority data buffer 2 that receives and stores priority data from the distributor 1. , a general data buffer 3 that receives and stores data that is not priority data from the distributor 1, and a general data buffer 3K that stores data stored in the priority data buffer @:fh-'E? It is composed of a data transfer controller 4 which outputs data with priority over X'4 data, a page buffer 5 which receives and accommodates the output of the data transfer controller 4, and a printing section.

In step 11 shown in FIG. 2, when data Pd is input to the distributor 1, the distributor 1 checks whether the leading K priority flag of the data is attached (step 12).

It is determined whether there is a priority flag (step 15), and if the priority flag is on, the distributor 1 transfers the priority data buffer 2'K to the priority flag.
Send the data (step 14).

If the priority flag is not set, the distributor 1 sends the data to the general data buffer 3 (step 15).

The data transfer controller 4 first searches the priority data buffer 2 for data (step 1B).

In step 17, it is determined whether or not there is priority data, and if there is data, the data transfer controller 4 sends the data in the priority data buffer 2 to the page buffer 5 (step 18). If there is no data, the data transfer controller 4 searches the general data buffer 3 for data (step 19).

In step 20, it is determined whether there is general data, and if there is data, the data transfer controller 4 sends the data in the general data box 7a3 to the page buffer 5K. (
Step 21). If there is no data, the process returns to step 16 and the processing from step 16 onwards is performed.

The data transfer from the priority data buffer 2 or the general data buffer 3 to the page buffer 5 by the data transfer controller 4 is performed in page units, and the data sent to the page buffer 5 accumulates for one page. Then, the page buffer 5 performs printing (step 22).

In this way, the data transfer controller 4 always searches for data in the priority data buffer 2 every time the transfer of data for one page is completed, so as long as there is priority data in the priority data buffer 2, it will search for the data. Priority is given to transferring to the page buffer and printing.

(Effects of the Invention) As explained above, the present invention provides a buffer for priority data separately from a buffer for general data, and sends the page data K with priority to the data in the priority data buffer. This has the effect that the data can be printed before other general data.

[Brief explanation of the drawing]

FIG. 1 is a block diagram illustrating one implementation of the present invention. FIG. 2 is a flowchart showing the sequence of operations of the implementation sequence of FIG. FIG. 3 is a block diagram showing an example of a conventional page printer. FIG. 4 is a flowchart showing an example of the operation sequence of the conventional example shown in FIG. 1...Distributor 2. ．． ．． Priority data puffer 3●●●General data buffer 4●●●Data transfer controller 5, 32●●ΦPage buffer 11-22, 41-43--●Step 31 of flowchart●●●●●Receiving buffer Patent applicant Japan Same as Denki Co., Ltd. Nippon Electric Engineering Limited Company Representative Patent Attorney Inoro Hisaozu Iri

Claims (1)

[Claims] In a page printer that is equipped with a buffer and a page buffer and prints data received from the outside page by page, there is a distributor that divides the received data into priority data and non-priority data and outputs it, and a distributor that outputs the data that is output from the distributor. a priority data buffer for accommodating the priority data, a general data buffer for accommodating the non-priority data output from the distributor, and a general data buffer for storing the data stored in the priority data buffer. A page printer with a priority function, characterized in that the page printer has a data transfer controller that sends data to the page buffer with priority over data that is being sent to the page buffer.