Decoder for digital TV receiver
AssigneeLG Electronics Inc.
InventorsIl-Taek Lim, Cheol-Hong Min, Sang-Hee Cho, Seung-Jai Min, Seong-Ok Bae, Kyoung-Won Lim
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Abstract
A decoder for a digital TV receiver is disclosed. The present decoder improves the picture quality of a video signal down converted when an SD class TV receiver receives an HD class video signal. Generally, the decoder receives data in block units, converts a format of the data into a format for display, memorizes the data, processes the memorized data, and displays the processed data by converting the format to include more horizontal color signals than vertical color signals, memorizing and reproducing the data in downsampling the data in block units in a given ratio, and storing the data.
Claims8
A decoder for a digital TV comprising:
- a first downsampling unit downsampling original luminance information of the received data into a data block of a 4×4 size, and downsampling original color information of the received data into a data block of a 8×4 size, the original color information including original horizontal and vertical color signal information;
- a storage unit storing the downsampled luminance and color information;
- a motion compensation unit motion compensating the downsampled luminance and color information utilizing input motion vectors;
- an adder combining the sampled luminance information and the downsampled color information to the motion compensated data, wherein the storage unit stores the combined data and outputs the combined data as a sampled data;
- and
- a conversion unit converting a received format of the sampled data block into a 4:2:2 format, wherein the resultant format includes relatively more of the original vertical color signal information than the original horizontal color signal information.
A decoder for a digital television receiver, comprising:
- a processing unit receiving data blocks having original horizontal and vertical color signal information and downsampling the received data blocks to smaller sized processed data blocks;
- and
- a conversion unit converting a format of the processed data blocks into a resultant format having a lower resolution such that the resultant format includes relatively more of the original vertical color signal information than the original horizontal color signal information.
Dependencies are inferred from the claim text.