4-12
UP-895/(E)
4-4-10. Control of Memory and Head Control Circuit
A system control transfers operation mode data in serial to the memory and head control circuit (IC501).
It then instructs the start and end of the fetch operation (that fetches a video signal to memory) and copy
operation (that feeds the memorized image to the head). The copy operation is carried out when the
COPY key is pressed. The fetch-to-copy operation is carried out when the PRINT key is pressed.
[Fetch mode]
[Copy mode]
nPRINT_KEY
GADATA
DCLK
nREGEN
nFETCH
nFETCHIN
nFETCHSTOP
nCOPY_KEY
GADATA
DCLK
nREGEN
nCOPY
nCOPYING
nCOPYSTOP
Operation mode data
Transfer CLK
During capture
Capture end
Capture start
Operation mode data
Transfer CLK
Copy start
During copy
Copy end
Содержание UP-895
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