Facsimile and static presentation processing – Facsimile – Specific signal processing circuitry
Patent
1987-08-24
1989-01-10
Groody, James J.
Facsimile and static presentation processing
Facsimile
Specific signal processing circuitry
358141, 34082583, H04N 701, H04N 1700
Patent
active
047977469
ABSTRACT:
A digital image interface system converts digital image information from a first format to a second format. The interface system includes a data input line for receiving input data, which may include a plurality of frames and fields of digital image information in a first format. An image buffer memory comprising first and second buffers is connected to the input line for storing the input digital image information. Each buffer is sufficient for storing one of the fields or frames of digital image information. A data output line is connected to the buffers for outputting the digital image information from the memory. A controller includes programmable logic arrays programmed according to the first data format, the second data format, and a predetermined memory format. The controller is connected to the memory to provide control signals and address signals to cause successive fields or frames of the digital image information to be alternately written into the two buffers of the memory in the predetermined memory format, and to cause the contents of the buffer not being written to be read out in the second format onto the data output line.
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Arthur David J.
Groody James J.
Hamann H. Fredrick
Kirk James F.
Peng John K.
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