Facsimile and static presentation processing – Facsimile – Specific signal processing circuitry
Patent
1988-08-31
1990-03-06
Shepperd, John W.
Facsimile and static presentation processing
Facsimile
Specific signal processing circuitry
358183, H04N 504
Patent
active
049070835
ABSTRACT:
The circuit disclosed provides for operation in wide ranges of temperature with high temporal stability. It comprises a quartz clock providing the point frequency, a delay circuit with N outputs to delay the clock signal by 1 to N increments with a value 1/NFP from one output to the following one. A decoding and control logic circuit receives the N shifted signals ad the external line synchronization and codifies the rank of the first shifted signal which follows the line synchronization. A selection logic circuit controlled by this information on rank selects the corresponding output.
REFERENCES:
patent: 4203130 (1980-05-01), Doumit et al.
patent: 4600895 (1986-07-01), Landsman
Claude Gillet
Gerard Voisin
Maitre Xavier
Parker Michael D.
Shepperd John W.
Thomson - CSF
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