Facsimile and static presentation processing – Facsimile – Specific signal processing circuitry
Patent
1986-12-19
1988-05-24
Groody, James J.
Facsimile and static presentation processing
Facsimile
Specific signal processing circuitry
358 22, 358903, H04N 964, H04N 5262
Patent
active
047469838
ABSTRACT:
A picture-in-picture type television receiver in which a sub-picture screen is inset within a main picture screen to allow the same or different pictures to be simultaneously displayed and which includes a circuit for separately displaying the channel numbers of both the main and sub-picture screens momentarily whenever the picture content of the sub-picture screen is changed and whenever the picture content of the main picture is changed if the sub-picture is display.
REFERENCES:
patent: 3943280 (1976-03-01), Kimura et al.
patent: 4139860 (1979-02-01), Miui et al.
patent: 4249213 (1981-02-01), Umaide et al.
patent: 4612569 (1986-09-01), Ichinose
patent: 4623915 (1986-11-01), Bolger
patent: 4673383 (1987-06-01), Samyaku et al.
patent: 4698664 (1987-10-01), Nichols et al.
TV Receiver Puts Two Pictures on Screen at Same Time, by Manfred Ullrich and Max Hegendoerfer, Electronics/Sep. 1, 1977.
Fully Digitalized Color Picture in Picture Television System, by Michio Masuda et al. IEEE Transactions on Consumer Electronics, vol. CE-25, Feb. 1979.
Groody James J.
Peng John K.
Shaw, Jr. Philip M.
Sony Corporation
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