Digital data rate corrector and time base corrector

Details Digital data rate corrector and time base corrector Digital data rate corrector and time base corrector

1979-12-31

1982-09-14

Safourek, Benedict V.

Facsimile and static presentation processing

Static presentation processing

Attribute control

358 17, 360 9, 375114, 375119, H04N 5785, H04N 902

Patent

active

043498329

ABSTRACT:
A first digital data memory is responsive to a first clock signal varying at a rate in accordance with the timing errors contained in a stream of digital data to enter the digital data for temporary storage. The stored digital data is retrieved from storage in the first digital data memory in response to a second clock signal of a stable reference rate. The relative times of entering and retrieving the digital data in the first digital memory are set according to the occurrence of a selected sequence of digital data bits contained in the digital data. The digital data retrieved from the first digital data memory is further temporarily stored in a second digital data memory for an interval determined by the time difference between the occurrence of the selected sequence of digital data bits and the occurrence of a reference time signal.

REFERENCES:
patent: 4133009 (1979-01-01), Kittler et al.
patent: 4212027 (1980-07-01), Lemoine
patent: 4231063 (1980-10-01), Ito et al.

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