JPS63173121A - Printer capable of processing blocked data - Google Patents

Abstract

PURPOSE:To reduce load on a time required for data transfer and to lower the occupancy ratio of a channel, by attaching a buffer for block data capable of storing plural logic records on an on-line printer. CONSTITUTION:When a channel command from a host computer 1 is received via a channel device 2 and a signal processing part 5, it is decided whether the data transfer is the one of the blocked data at a command analysis processing part 6 in a print controller 3. When it is NO, the data is logic record- processed by a logic record processing part 7, and a print data is sent to a printing mechanism. Meanwhile, when it is YES, a received blocked data is stored in the buffer 9 by block processing part 8, and after storing, it is taken out in an order at every logic record at a de-block processing part, then, it is supplied to the mechanism 4. By constituting a device in such a way, it is possible to reduce the load on the data transfer, and to lower the occupancy ratio of the channel device handling the transmission/reception of the data.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a printer device capable of processing blocked data that buffers data transferred from a host computer system.

[Conventional technology]

An online printer device connected to a host computer system through a channel interface transfers a predetermined unit of print data from the host computer system, processes it, and prints it out. When the print data processing is completed, the printer device sends a completion report or data transfer request to the host computer, and the next print data is transferred, and the above communication process is repeated until there is no more print data. It will be done. In such an online system, conventionally, one data transfer from the host computer system constituted one logical record. This logical record is a unit of processing in the printer device, and corresponds to printing one line, for example. Therefore, if there are 10 print lines on one page, data transfer will be performed 10 times.

[Problem that the invention seeks to solve]

In conventional systems, data is transferred in units of processing as described above, so it takes time to send data from the host computer system and receive data at the online printer. The burden on the sending and receiving sides was heavy because communication and command analysis were required to connect the communication line.

Furthermore, the host comviator system and online service.

There is also a problem in that the occupancy rate of the channel device that controls the interface between the printer devices becomes high.

The present invention is intended to solve the above-mentioned problems, and it is an object of the present invention to provide a printer device capable of processing blocked data, which reduces the time load required for data transfer and further reduces the occupancy rate of a channel device. This is the purpose.

[Means for solving problems]

To this end, the printer device of the present invention capable of processing blocked data is provided with a buffer for blocked data that can store a plurality of logical records in the printer device connected to the host combinator system through a channel interface. When a plurality of logical records are received by data transfer, the system is characterized in that they are temporarily stored in a buffer for blocked data and then processed.

[Effect]

In the printer device capable of processing blocked data according to the present invention, the following processing is performed on the host system side and the online printer side, respectively.

In other words, on the host system side, multiple logical records are
The data is transferred in blocks and transferred to the bone. On the other hand, in an online printer device, blocked data is stored in a buffer, and the buffered blocked data is further decomposed into logical records.

〔Example〕

Examples will be described below with reference to the drawings.

FIG. 1 is a block diagram showing the configuration of one embodiment of a printer device capable of processing blocked data according to the present invention, FIG. 2 is a diagram for explaining the format of data to be transferred, and FIG. 3 is a block diagram showing the configuration of a printer device capable of processing blocked data according to the present invention Diagram showing an example of data buffering format,
FIG. 4 is a diagram for explaining the outline of processing in the control device of the online printer device.

In FIG. 1, l is a host computer, 2 is a channel device, 3 is a print control device, 4 is a printing mechanism, 5 is a reception processing section, 6 is a command analysis processing section, 7 is a logical record processing section, and 8 is a block processing section. 9 is a buffer, 10 is a deblock processing section, and 11 is an output processing section. The command analysis processing unit 6 analyzes a command when data is transferred from the host computer l, determines whether the data is transferred in units of logical records or in block data, and executes a corresponding processing routine. It operates. The block processing section 8 stores the blocked data transferred by blocked data transfer in the buffer 9, and the deblock processing section 10 extracts one logical record from the buffer 9 and processes the logical records. It is.

The second example shows an example of the format of each transfer data transferred between the host computer l and the print control device 3.
1i4 (al) is an example of the format of transfer data in units of logical records, and (b) is an example of the format of transfer data in block data.Generally, as shown in FIG. Information on the print character (print control character for that logical record) and record length is added before the record, and in the case of blocked data transfer, information on the blocked data length is added. Prior to starting the transfer, the host computer 1 sends a channel command instructing whether to transfer logical records or block data.

Next, as described above, the host computer first instructs logical record transfer or blocked data transfer using a channel command, and in the case of blocked data transfer, blocks the data into one data transfer frame. and transfer it. The flow of processing by the printing control device in this case will be explained below with reference to FIG.

First, when a channel command is received, the command analysis processing unit 6 checks whether or not blocked data is to be transferred.

In the case of No, the logical record processing section 7 is operated to perform the same processing as conventional processing on the logical record, and the print data is passed to the printing mechanism 4.

In the case of YES, that is, in the case of blocked data transfer, print data etc. are blocked by the host computer system 1 and sent to the print control device 3 of the online printer device through the channel device 2. Therefore,
The print control device 3 recognizes that the received data is divided into blocks, and first stores the data transferred by the block processing section 8 in the buffer 9. When the blocked data is buffered as shown in Figure 3,
Next, the deblock processing unit 10 takes out one logical record from the buffer 9 and performs logical record processing. In this logical record processing, the logical record is subjected to the same processing as in the logical record processing section 7, and then passed to the printing mechanism. This deblocking process is repeated until there are no unprocessed logical records in the buffer 9.

Note that the present invention is not limited to the above embodiments, and various modifications are possible. For example, in the above embodiment, the deblock processing section 10 takes out one logical record from the buffer 9 and performs logical record processing. You can also pass it on.

〔Effect of the invention〕

As is clear from the above description, according to the present invention, since a buffer for blocked data that can store a plurality of logical records is added to an online printer device, the following effects can be expected.

That is, since data from the host computer system can be divided into blocks and a plurality of logical records can be transferred in one data transfer, the time required for data transfer can be shortened.

In addition, in online printer devices, by buffering blocked data and reducing the number of data transfers, it is possible to reduce the occupation rate of the channel device that controls the data transmission/reception interface, and improve the usability of the channel device. .

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the configuration of one embodiment of a printer device capable of processing blocked data according to the present invention, FIG. 2 is a diagram for explaining the format of data to be transferred, and FIG. FIG. 4 is a diagram showing an example of a buffering format of blocked data, and is a diagram for explaining the outline of processing in the control device of the online printer device. 1... host computer, 2... channel device,
3... Printing control device, 4... Printing mechanism, 5... Reception processing section, 6... Command analysis processing section, 7... Logical record processing section, 8... Block processing section, 9 . . . Buffer, 10 . . . Deblock processing section, 11 . . . Output processing section. Applicant: Fuji Xerox Co., Ltd. Representative Patent Attorney
Ryukichi Abe (2 others) Figure 2 (α) (b) 45 ■ En〒Next day = Figure 4

Claims (1)

[Claims] In a printer device connected to a host computer system through a channel interface, a buffer for blocked data that can store multiple logical records is provided, and when multiple logical records are received in one data transfer, the blocked data is A printer device capable of processing blocked data, characterized in that the data is temporarily stored in a data buffer and then processed.