Miscellaneous active electrical nonlinear devices – circuits – and – Signal converting – shaping – or generating – Synchronizing
Patent
1994-02-04
1996-06-18
Callahan, Timothy P.
Miscellaneous active electrical nonlinear devices, circuits, and
Signal converting, shaping, or generating
Synchronizing
327 48, 377 39, 377 50, 375355, H03K 526, H03L 700
Patent
active
055281834
ABSTRACT:
A low cost and easily implemented apparatus and method for synchronizing serially connected clock circuits is ideally suited to audio applications. The circuit takes data from a bitstream clock source and from the local source and counts the number of pulses received from each. A desired clock count is calculated based as a multiple of the ratio of the bitstream clock source frequency to the local clock signal frequency. Based on the samples received from the bitstream clock relative to the local clock at a late point in time, samples are either repeated or dropped to correct any error in the bitstream signal.
REFERENCES:
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patent: 4345211 (1982-08-01), Longworth
patent: 4573175 (1986-02-01), Cressey et al.
patent: 4686483 (1987-08-01), Isshiki et al.
patent: 4780895 (1988-10-01), Paul
patent: 5157699 (1992-10-01), Miyazaki et al.
patent: 5245667 (1993-09-01), Lew
Auld David R.
Khubchandani Anil
Maturi Greg
Callahan Timothy P.
Englund Terry L.
LSI Logic Corporation
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