Serial communication apparatus and serial communication method

Details Serial communication apparatus and serial communication method Serial communication apparatus and serial communication method

2007-04-17

2007-04-17

Popovici, Dov (Department: 2625)

Facsimile and static presentation processing

Static presentation processing

Communication

C358S001130

Reexamination Certificate

active

10091484

ABSTRACT:
At the time when the control signal line of a printer controller is connected to the input terminal of a three-state buffer, the control signal line is connected also to the D input terminal of the flip-flop that operates according to the FFCK clock. The control signal of Q output signal of the flip-flop is inputted into the AND gate circuit, and the output signal of the gate is inputted into the control terminal of three-state buffer. Accordingly, by synchronizing the signal to the place where the level of control signal line starts, the level of data signal line changes from level1to the level of output. After that, waveform rounding that is generated at the time of releasing the signal line is reduced to enable higher communication speed.

REFERENCES:
patent: 5475846 (1995-12-01), Moore
patent: 5661373 (1997-08-01), Nishizawa
patent: 6167493 (2000-12-01), Ebeshu et al.
patent: 6448810 (2002-09-01), Nomura
patent: 6606286 (2003-08-01), Maekawa
patent: 6636100 (2003-10-01), Shingaki

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