Demodulation circuit of communication control system

Details Demodulation circuit of communication control system Demodulation circuit of communication control system

1994-01-06

1995-10-17

Chin, Stephen

Pulse or digital communications

Synchronizers

370 9, 341 53, 341178, 375238, H03K 708, H03K 908

Patent

active

054597510

ABSTRACT:
A demodulation circuit of the communication control system is disclosed, in which the rising edge and the falling edge of a symbol or a one-bit data subjected to pulse width modulation as inputted from a transmission path are detected. The time width of a high-level section or a low-level section of the symbol or the one-bit data is measured on the basis of the result of edge detection. The time width thus measured is compared with a reference time width set in advance. According to the result of comparison, the sampling timing for the high-level section and the low-level section is adjusted respectively. The sampling timing thus adjusted is used to demodulate the data requiring demodulation including the symbol and the one-bit data.

REFERENCES:
patent: 4429384 (1984-01-01), Kaplinsky
patent: 5134632 (1992-07-01), Fletcher et al.
patent: 5315299 (1994-05-01), Matsumoto

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