Television signal transmitting and receiving system

Details Television signal transmitting and receiving system Television signal transmitting and receiving system

1989-08-01

1991-04-30

Britton, Howard W.

Facsimile and static presentation processing

Static presentation processing

Attribute control

358141, 358140, H04N 712

Patent

active

050123262

ABSTRACT:
A noninterlaced Y signal is separated into a horizontal high frequency component H and a horizontal low frequency component L by a LPF and an adder circuit at a time of interlace conversion. The component H is converted to an interlaced signal by a field repeating process comprising an interfield averaging process by an interfield averaging circuit, a field thinning out process by a field thinning out circuit and a delay process by an interlace conversion circuit. On the other hand, the component L is converted to an interlaced signal by a line thinning out process by an interlace conversion circuit. At a time of noninterlace conversion, the interlaced Y signal is separated into the components H and L by an LPF and an adder circuit. The component H is converted to a noninterlaced signal by means of an interfield interpolation process comprised of an interfield addition process by an interfield adder circuit and a field repeating process by a field repeating circuit, while the component L is converted to a noninterlaced signal by a motion-adaptive interpolation process of a noninterlace conversion circuit.

REFERENCES:
patent: 4701783 (1987-10-01), Glenn
patent: 4720744 (1988-01-01), Washi et al.
ITEE Technical Report, vol. 12, No. 30, P55-P60, 1988, "A foundmental study of 3 dimensional frequency division multiplexing", K. Kawai, S. Yasuki, N. Sakamoto.

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