JPH0260773A - Printer device - Google Patents

Abstract

PURPOSE:To generate a next data receivable condition by canceling unnecessary data transmitted from a host computer by an external switch. CONSTITUTION:When data is transmitted from a host computer 1 to a receiving circuit 3, the data is sequentially stored in a receiving buffer 4. If the transmitted data becomes unnecessary at this time, a user depresses an external switch 9 to start a receiving data cancel circuit 5 to issue a data transmission stop request to the host computer 1, whereby the host computer 1 stops the data transmission to the receiving circuit 3. Then, the receiving data cancel circuit 5 deletes the data in the receiving buffer 4 to release the receiving buffer 4 to the host computer 1, succeedingly deleting also printing output data which is being generated in an editing/analyzing circuit 6 to erase old data in a printer device 2 to make a condition for receiving next data from the host computer 1.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a printer device, and particularly to a processing circuit for data received from a host device.

[Conventional technology]

Conventionally, this type of printer device unconditionally writes data into a reception buffer when data is sent from the host side, and the received data cannot be erased until the printer device is turned off or the data is printed out.

[Problem to be solved by the invention]

With the conventional printers mentioned above, if incorrect or unnecessary data is sent from the host side, the printer must either print out that data or turn off the power before accepting the next data from the host. The disadvantage was that it could not be done.

[Means to solve the problem]

The printer device of the present invention includes a receiving circuit that receives data from a host device, a receiving buffer that stores the received data, a receiving data canceling circuit that cancels the received data and data in the receiving buffer, and an external device that operates this circuit. It has a switch.

〔Example〕

Next, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram showing an embodiment of the present invention. Referring to FIG. 1, a host computer 1 sends data to a link device. The receiving circuit 3 receives data from the host device. A reception buffer 4 stores data received by the reception circuit 3. The received data cancel circuit 5 deletes the data in the receive buffer 4 using the external switch 9, and requests the host computer 1 to stop data transmission. The editing/analysis circuit 6 edits or analyzes the data received by the receiving circuit 3. The printing unit 7 outputs a printout result 8.

Next, the operation will be explained.

When data is sent from the host computer 1 to the receiving circuit 3, the data is sequentially stored in the receiving buffer 4. If the data sent at this point is no longer needed, the user presses the external switch 9 to activate the received data cancellation circuit 5. The received data canceling circuit 5 issues a data transmission stop request to the host computer 1. As a result, the host computer 1 receives the receiving circuit 3.
Stop sending data to.

Next, the reception data canceling circuit 5 cancels the reception buffer 4.
data is deleted and the receive buffer 4 is released to the host computer 1. Subsequently, the printout data being created by the editing/analysis circuit 6 is also deleted, the old data in the printer device 2 is erased, and the next data is ready to be received from the host computer 1.

〔Effect of the invention〕

As described above, the present invention has the advantage that by canceling unnecessary data sent from the host using an external switch, it is possible to create a state in which the next data can be received.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing one embodiment of the present invention. 1...Host computer, 2...
Printer device, 3... Receiving circuit, 4...
・Receive buffer, 5...Receive data cancel circuit, 6...Edit/analysis circuit, 7...
Printing section, 8...Print output result, 9...
External SW0 Agent Patent Attorney Susumu Uchihara

Claims (1)

[Claims] It has a receiving circuit that receives data from a host device, a receiving buffer that stores the received data, a receiving data canceling circuit that cancels the receiving data and data in the receiving buffer, and an external switch that activates the canceling circuit. printer device.