Sound processing unit, sound processing system, audio output unit and display device

Abstract

The present invention identifies practical speaker connection using a device having a sound channel of a 5.1 channel or 7.1 channel, and provides the device that can easily reproduce the optimum multiple channels. The present invention can identify actual speaker arrangement by for example, measuring the impedance of a terminal at the side of an audio amplifier. If incorrect connection is found, a warning is issued. This information is transmitted to a signal source with an EDID and a signal with the optimum a number of sound channel is sent. The EDID is also used for the connection with a display unit and the speaker connection with which the display unit is provided uniquely. For example, a sound through the 7.1 channel is easily reproduced using the speaker of the display unit in the channel of the front speaker.

Description

BACKGROUND OF THE INVENTION [0001] 1. Field of the Invention [0002] The present invention relates to an art for clearly reproducing sound signals of multiple channels (for example, 5.1 channel and 7.1 channel) obtained from television broadcasting or a storage device, such as a VCR (Video Cassete Recorder), a DVD (Digital Versatile Disc), and a hard disc recorder. The present invention is especially applied to a broadcasting receiving unit (hereinafter referred to as an STB (set-top-box)) that receives the television broadcasting and outputs a sound signal and a video signal, a sound signal source (needless to say, the video signal can also be output), a sound processing unit, such as a switcher, for processing a signal from this sound signal source and distributing the signal to multiple speakers, or a display device, such as a television receiver. [0003] In the television broadcasting and package media, such as movie software products, the digitalization of video and sound signals...

AI Technical Summary

Benefits of technology

[0009] The present invention is made in consideration of the aforementioned problems. An object of the present invention is to provide an art for transmitting a connected state of a speaker connected to a sound processing unit to a sound signal source and requesting sound data suitable for the connected state, and enabling the reproduction of a sound suitably. Further, the present invention provides an art that enables the reproduction of more excellent sound by utilizing even a speaker installed in a display device. Moreover, the present invention provides such an art that can easily check the connection of a complicated multi-channel speaker utilizing the display unit of the display device.

Problems solved by technology

For example, even if a switcher with an audio amplifier that is one of sound signal processing units corresponds to a 5.1 channel, there is a possibility of a sound effect becoming unsatisfactory when the user does not perform appropriate processing.

Accordingly, for example, even when a sound signal source connected to an audio amplifier cannot identify a speaker number connected to the audio amplifier, and when multiple sound signals such as a stereophonic sound system and the 5.1 channel can be supplied, an appropriate sound signal cannot be supplied.

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