Facsimile and static presentation processing – Facsimile – Specific signal processing circuitry
Patent
1985-02-12
1988-05-17
Groody, James J.
Facsimile and static presentation processing
Facsimile
Specific signal processing circuitry
358143, H04N 7087, H04N 7093
Patent
active
047454768
ABSTRACT:
A television sound signal processing apparatus receives a digitized delta-encoded sound signal superposed in a horizontal blanking period and a digital signal showing the standard value of the sound signal superposed in a vertical blanking period, and then compares the reference signal of this field with that of one field before, and, when the difference is greater than a predetermined value, employs the decoded value of the delta encoded signal immediately before that reference signal as the standard value for the delta decoding of the sound signal.
REFERENCES:
patent: 4541101 (1985-09-01), Potage
Groody James J.
Matsushita Electric - Industrial Co., Ltd.
Parker Michael D.
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