Facsimile and static presentation processing – Facsimile – Specific signal processing circuitry
Patent
1989-01-24
1991-01-08
Groody, James J.
Facsimile and static presentation processing
Facsimile
Specific signal processing circuitry
358140, 358181, H04N 546, H04N 701, H04N 327
Patent
active
049840819
ABSTRACT:
An apparatus for receiving and selecting high-definition television signals and NTSC standard television signals includes a high-definition display screen device having an aspect ratio of 16 to 9. The NTSC standard television signals have an aspect ratio which is different than the 16 to 9 aspect ratio of the high-definition display screen device. A first signal converter is for converting the NTSC standard television signals into first quasi-high-definition television signals identifying a first displayed image corresponding in vertical length to a vertical length of the high-definition display screen device. A second signal converter is for converting the NTSC standard television signals into second quasi-high-definition television signals identifying a second displayed image corresponding in horizontal length to a horizontal length of the high-definition display screen device. Switching circuits are provided for selecting one of the high-definition television signals and the first and second quasi-high-definition television signals.
REFERENCES:
patent: 4394690 (1983-07-01), Kobayash
patent: 4729012 (1988-03-01), Jose et al.
patent: 4794456 (1988-12-01), Tsinberg
patent: 4864405 (1989-09-01), Chambers
Ikuhara Hideyuki
Kawashima Masahiro
Kutsuki Tetsuo
Miyoshi Toshihiro
Yamamoto Kazuyasu
Groody James J.
Matsushita Electric - Industrial Co., Ltd.
Powell Mark R.
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