Apparatus and method for detecting frame synchronization...

Details Apparatus and method for detecting frame synchronization... Apparatus and method for detecting frame synchronization...

2007-08-14

2007-08-14

Young, Wayne (Department: 2627)

Dynamic information storage or retrieval

Condition indicating, monitoring, or testing

Including radiation storage or retrieval

C369S047280, C369S047180

Reexamination Certificate

active

10799323

ABSTRACT:
A frame synchronization signal detection apparatus includes a synchronization signal detector, a main frame synchronization signal generator, a sub frame synchronization signal generator, and an output unit. The synchronization signal detector detects and outputs a synchronization signal from a digital data signal. The main frame synchronization signal generator detects and outputs a first valid synchronization signal from the synchronization signal, as an internal frame synchronization signal, and generates and outputs a first insertion synchronization signal, as the internal frame synchronization signal, if the first valid synchronization signal is not detected in a predetermined first time period. The sub frame synchronization signal generator detects and outputs a second valid synchronization signal from a synchronization signal. The output unit outputs a frame synchronization signal. The main frame synchronization signal generator stops generating the first insertion synchronization signal, and detects and outputs a first valid synchronization signal as an internal frame synchronization signal.

REFERENCES:
patent: 4979192 (1990-12-01), Shimizume et al.
patent: 6577569 (2003-06-01), Yamamoto et al.
patent: 9-320177 (1997-12-01), None
patent: 1998-042667 (1998-08-01), None

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