Inset picture centering in a pix-in-pix system

Details Inset picture centering in a pix-in-pix system Inset picture centering in a pix-in-pix system

1989-04-20

1991-07-09

Groody, James J.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358160, 358180, H04N 545

Patent

active

050310445

ABSTRACT:
A PIP system stores data indicative of the location of the center point of an inset picture with respect to a display screen center point in a memory area of a first size. The inset image data is read out of the memory area beginning with the data stored in a memory location known as the "read address". When a ZOOM-IN or ZOOM-OUT command is received, data representing a new video image of a different size is stored for display in an unused memory area of a different size, a new inset center point is computed, and a new read address is computed, so that the displayed centers of the new inset area of a different size, and the old inset area are substantially the same.

REFERENCES:
patent: 4722007 (1988-01-01), Fling
patent: 4744581 (1988-09-01), Shiratsuchi
patent: 4811103 (1989-03-01), Casey
Manual for TOSHIBA Model No. 30 ID1, Mar. 16, 1988.
CTC 140 Color TV Chassis Technical Training Manual pp. 21, 64, 68 and 70.
Demonstration of Goldstar Television Receiver Model No. CMT-2612P at Summer CES Show Seen Jun. 5, 1989.

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