Video decoding device of a TV receiver

A television receiver, comprising:

• a tuner for selecting a prescribed transmitted signal;
• a decoder for decoding a signal selected by said tuner into a bitstream of a first data format;
• a device that converts the first data format to a final data format;
• a display for displaying an image based on the final data format, wherein said device includes:
• a decoder circuit that receives the first data format at an input port and decodes the first data format to output a second data format and the final data format at first and second output ports, respectively;
• an encoder circuit that receives the second data format at an input port and encodes the second data format to output a third data format at an output port;
• and
• a memory storing the third data format received from the encoder circuit, wherein said decoder circuit includes a first decoder for decoding the third data format received from said memory into the final data format provided at the second output port of said decoder circuit.

A method of decoding an input data of a television receiver, comprising the steps of:

• downsampling the input data in a unit of block at a predetermined ratio;
• dividing the downsampled result into a first group of data and a second group of data and after downsampling the first group of data, performing screen format conversion of the downsampled first group of data for a display size and aspect ratio;
• storing in a memory each of the converted first group of data and the second group of data;
• downsampling the second group of data to correspond with the first group of data to thereby perform screen format conversion for the downsampled second group of data;
• and
• outputting the first and second groups of data when the second group of data is reproduced.