Parent-picture and child-picture display apparatus

Details Parent-picture and child-picture display apparatus Parent-picture and child-picture display apparatus

1993-01-07

1995-05-30

Groody, James J.

Television

Basic receiver with additional function

Multimode

348555, 348565, 348567, H04N 546, H04N 544, H04N 545

Patent

active

054206413

ABSTRACT:
A display apparatus comprising a field frequency converter for converting the field frequency of a parent-picture video signal; an aspect ratio converter for converting the aspect ratio of the video signal after the field frequency conversion; a child-picture processor for generating a child-picture video signal; and a switch for synthesizing the aspect-converted video signal with the video signal obtained from the child-picture processor. In one embodiment, the storage capacity of a memory required in the field frequency converter can be minimized. The apparatus further comprises a selector for selecting either the parent-picture video signal of the second aspect ratio or the parent-picture video signal of the first aspect ratio which has been converted to the second aspect ratio, wherein merely one switch is sufficient for synthesizing the video signal obtained from the child-picture processor with the selected parent-picture video signal of the second aspect ratio.

REFERENCES:
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patent: 5168362 (1992-12-01), Yoshida
patent: 5208660 (1993-05-01), Yoshida
patent: 5289284 (1994-02-01), Ersoz et al.
Tsuchida et al., Multi-picture System for High Resolution Wide Aspect Ratio Screen, IEEE Transactions on Consumer Electronics, vol. 37, No. 3, Aug. 1991, pp. 313-319, New York, U.S.
Tsuchida et al., Multi-picture System for High Resolution Wide Aspect Ratio Screen, IEEE 1991 International Conference on Consumer Electronics, Digest of Technical Papers, Jun. 5, 1991, pp. 252-253, Rosemont, U.S.

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