1982-01-19
1984-07-17
Atkinson, Charles E.
Excavating
375111, H03D 324
Patent
active
044610025
ABSTRACT:
A digital signal receiver is structured to receive and demodulate a digital signal. Such digital signal may comprise, for example, a television signal of character multiplex transmission having a digital signal included in the vertical blanking period of the television signal and a digital signal receiver may be structured to reproduce the digital signal from the television signal. The digital signal includes a clock run-in signal (CRI), a framing code signal (FRC) and a bit serial data signal (DA) disposed in succession. An error of the framing code or the data signal caused by a low frequency region group delay characteristic of a transmission path between the transmission and the demodulation is detected based on the digital signal. Upon detection of an error, a waveform distortion of the framing code signal and the data signal is corrected by means of a correcting circuit (15) such as an LC circuit, whereby an error of the data signal to be demodulated thereafter is prevented.
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patent: 3839599 (1974-10-01), Pitroda
patent: 4218771 (1980-08-01), Hogge, Jr.
patent: 4365329 (1982-12-01), Sauvanet
Atkinson Charles E.
Sanyo Electric Co,. Ltd.
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