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US 6,556,252 B1Granted
Device and method for processing sub-picture
AssigneeLG Electronics Inc.
InventorDae Joong Kim
Life of this patent
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Abstract
A device and method for processing a sub-picture in a TV receiver is disclosed. The present invention allows a viewer to freely move the position of a sub-picture in both left⇄right and top⇄bottom directions, such that even a portion of the sub-picture may be displayed on the screen.
Claims24
A device for processing a sub-picture in a TV receiver, comprising:
- an input signal processor which receives and processes an input data including a main picture data and a sub-picture data, said input signal processor generating main picture synchronizing signals and sub-picture synchronizing signals;
- a picture-in-picture (PIP) synchronizing generator which receives the main picture synchronizing signals and generates PIP synchronizing signals;
- a read timing generator which generates a read signal using the PIP picture synchronizing signals;
- a write timing generator which generates a write signal using the sub-picture synchronizing signals and the PIP synchronizing signals;
- a sub-sampler which selects and sub-samples a portion of the sub-picture data to be displayed according to the write signal;
- a sub-picture frame memory which stores a sub-sampled sub-picture data and presents the stored sub-picture data according to the read signal;
- and
- a multiplexer which multiplexes a decoded main picture data from the input signal processor and the sub-picture data read from the sub-picture frame memory, and outputs the multiplexed data for display.
5 more elements
A method for processing a sub-picture in a TV receiver, comprising:
- (a1) receiving and processing an input data including a main picture data and a sub-picture data, and generating main picture synchronizing signals and sub-picture synchronizing signals;
- (b1) generating picture-in-picture (PIP) synchronizing signals using the main picture synchronizing signals;
- (c1) generating a read signal using the PIP synchronizing signals;
- (d1) generating a write signal using the sub-picture synchronizing signals and the PIP synchronizing signals;
- (e1) sub-sampling a portion of the sub-picture data to be displayed according to the write signal;
- (f1) storing a sub-sampled sub-picture data and presenting the stored sub-picture data according to the read signal;
- and
- (g1) multiplexing a decoded main picture data and the presented sub-picture data, and outputting the multiplexed data for display.
5 more elements
Dependencies are inferred from the claim text.