Video data transmitter apparatus and video data receiver apparatus for transmission system using multi-value amplitude modulation

摘要

A video data transmitter apparatus generates and transmits a multi-value amplitude modulation signal by performing a multi-value amplitude modulation of a plurality of N bits per one symbol according to video data of a video signal or a color signal constituting the video signal, or a brightness signal and a color-difference signal. A data separator portion separates the video data into first to N-th pixel data, a difference calculator portion calculates (N−1) pieces of predetermined difference information based on the separated first to N-th pixel data, and a multi-value amplitude modulator portion performs a multi-value modulation so that predetermined N-bit data corresponds to a multi-value signal level closest to an intermediate level having an intermediate value between a maximum level and a minimum level of the multi-value signal level of the multi-value amplitude modulation signal.

主权项

1. A video data transmitter apparatus configured to generate and transmit a multi-value amplitude modulation signal by performing a multi-value amplitude modulation of a plurality of N bits per one symbol according to video data of a video signal or a color signal constituting the video signal, or a brightness signal and a color-difference signal, the video data transmitter apparatus comprising:
a data separator portion configured to separate the video data into first to N-th pixel data, a difference calculator portion configured to calculate (N−1) pieces of predetermined difference information based on the separated first to N-th pixel data, a multi-value amplitude modulator portion configured to perform a multi-value modulation on the (N−1) pieces of predetermined difference information so that predetermined N-bit data corresponds to a multi-value signal level closest to an intermediate level having an intermediate value between a maximum level and a minimum level of the multi-value signal level of the multi-value amplitude modulation signal, when the first pixel data or data obtained by performing an encoding process on the first pixel data is allocated to a first bit of the multi-value amplitude modulation as first transmission data, and when the respective pieces of differential information or data obtained by adding one bit or a plurality of predetermined bits to the respective pieces of differential information are respectively allocated to second to N-th bits of the multi-value amplitude modulation as second to N-th transmission data, wherein a predetermined first bit value of the predetermined N-bit data is allocated to the second to N-th bits, and wherein an occurrence probability of the predetermined first bit value of the predetermined N-bit data is higher than that of a predetermined second bit value.