Facsimile and static presentation processing – Facsimile – Specific signal processing circuitry
Patent
1988-02-29
1989-09-12
Groody, James J.
Facsimile and static presentation processing
Facsimile
Specific signal processing circuitry
358 22, 340728, H04N 701
Patent
active
048665207
ABSTRACT:
Lower resolution video signals (10) having alternating odd fields (12) and even fields (14) are stored in an odd line memory 20A and an even line 20B, respectively. An interpolator 22 interpolates adjacent odd and even lines. A selector 24 cyclically selects odd, even, and interpolated lines in a pre-selected pattern, such as one of the patterns illustrated in FIGS. 1, 7, 8A-F, and 9A-F. By selecting even, odd, and interpolated lines, the number of lines per picture is increased to produce a higher resolution video signal (30).
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Machida Tetsuo
Nomura Kunihiro
Takekoshi Toshio
Yamada Kazunari
Groody James J.
Hitachi , Ltd.
Kostak Victor R.
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