Data recovering circuit

Abstract

Abstract PURPOSE:To process the recovery of the data at a high speed, to synchronize with the system speed of the electronic photograph system printer and to send the signal by providing two pairs of the data recovering part and recovering and processing the data outputted from the memory, in parallel. CONSTITUTION:The compressing data from a picture buffer 3 are inputted through a black shifter 13a and a white shifter 13b to a black decoding table 14a and a white decoding table 14b, the recovered run length data are selected by a selector 15, and signals RUNL 0-11 are sent to a run length counter 7. Each time a control line PIPE 1 falls, H is inputted to AND circuits ANDa and ANDb, in accordance with an output signal BLK/WHT of the run length counter 7, the black shifter 13a and the white shifter 13b output respectively the compressing data of the black dot and the white dot and the selector 15 alternately selects the recovering data and sends run length signals RUNL 0-11.

Inventors

• 👤 Takashi Monno
• 👤 孝史 門野
• 👤 Masaaki Nishiyama
• 👤 西山　雅昭

Bibliographic Details