Patent ID: 9288487
Filing Date: 2016-03-15
CPC Classification: H04N

Claim Text:
1. An electronic device for de-quantization comprising: a local storage storing a plurality of first user-defined sub-factors and a plurality of second sub-factors and a plurality of default de-quantization scales; a first multiplier connected to the local storage and generating a plurality of user-defined de-quantization scales by multiplying the first user-defined sub-factors and the second sub-factors; a multiplexer connected to the local storage and the first multiplier and selectively outputting one of the generated user-defined de-quantization scales and the stored default de-quantization scales for a block of a macro-block (MB) of a bitstream to be decoded; and a second multiplier connected to the multiplexer and generating a plurality of inverse quantized coefficients by multiplying the output de-quantization scales from the multiplexer by the quantized coefficients.