RADIO TRANSMITTER APPARATUS, RADIO RECEIVER APPARATUS, RADIO TRANSMITTING METHOD AND RADIO RECEIVING METHOD

摘要

Provided are a radio transmitter apparatus, a radio receiver apparatus and methods therefor whereby video and audio data can be wirelessly transmitted between AV devices, thereby making the AV contents available therebetween. A transmitter apparatus (200) generates, from an HDMI audiovisual multiplexed signal supplied from a transmitting side device (100), and outputs a compressed audiovisual multiplexed signal to a receiver apparatus (400), which then generates, from the compressed audiovisual multiplexed signal, and outputs the HDMI audiovisual multiplexed signal to a receiving side device (500). The transmitter apparatus (200) comprises: a means (220) for separating the HDMI audiovisual multiplexed signal supplied from the transmitting side device (100) into video and audio signals; a video codec chip (230) for compressing the separated video signal with a delay time of 2 msec or less to generate a compressed video signal; a network control chip (240) for performing a zero-copy processing in which the separated audio signal and the separated compressed video signal are written, by use of a DMA function (291), into a memory area (281) of an OS (280) and then transferred to a network stuck (292), thereby multiplexing these signals to generate the compressed audiovisual multiplexed signal; and a transmitting chip (260) for transmitting this signal to the receiver apparatus (400).