PRINTER CONTROL SYSTEM

PURPOSE:To enable shortening of program processing time and diversification of an interface to be easily coped with by a method wherein each of a device control part and an interface control part is controlled with an independent microprogram, and the title printer control system is so constructed t...

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Bibliographic Details
Main Author KUROKAWA SHOWA
Format Patent
LanguageEnglish
Published 01.02.1991
Subjects
CORRECTION OF TYPOGRAPHICAL ERRORS
i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME
LINING MACHINES
PERFORMING OPERATIONS
PRINTING
SELECTIVE PRINTING MECHANISMS
STAMPS
TRANSPORTING
TYPEWRITERS
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Summary:PURPOSE:To enable shortening of program processing time and diversification of an interface to be easily coped with by a method wherein each of a device control part and an interface control part is controlled with an independent microprogram, and the title printer control system is so constructed that transfer of information of both is effectively executed. CONSTITUTION:An I/O port 20 is an input and output port of input information from a device control side and output information to a device control part side, and those information is communicated through a bus line 24. An I/O port 22 is an output port from the device control part, and an I/O port 23 is an inlet of the device control part. Switching of input information is performed by an INMODE line 26 through the I/O port 20 from an interface control part. The output information on the bus line 24 is latched with the I/O port 23 by a control line 25 and further, whether the latched information could be processed by using the device control part or not can be judged. Latch operation is performed with a H-STB 27 and a L-STB 28, and judging operation can be performed with an INP TRDY line 29.
Bibliography:Application Number: JP19890162277