Electronic appliance

A technology of electronic equipment and input terminals, which is applied in televisions, electrical components, color TVs, etc., and can solve problems such as the inability to distinguish digital audio signals and the inability to reproduce high-quality digital audio signals

Inactive Publication Date: 2004-10-27
SONY CORP
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  • Claims
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Problems solved by technology

[0009] Therefore, for example, when the above-mentioned rotary encoder is used to select the input of these audio-visual signals, for example, when a digital audio signal and an analog audio signal are given at the same time, if the analog audio signal is first selected, then according to people's usual sense of hearing, Sometimes the digital audio signal cannot be distinguished, which may cause the intentionally broadcast high-quality digital audio signal to be unreproducible
Correspondingly, the same problem also arises when it is especially necessary to listen to the sound of an analog audio signal

Method used

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Embodiment Construction

[0020] Embodiments of the present invention will be described below with reference to the drawings. Fig. 1 is a block diagram illustrating an example of the structure of a main amplifying device of an audio-visual (AV) device applied to an electronic device according to a first embodiment of the present invention. In FIG. 1, the audio signal system is mainly shown, and the video signal system is omitted.

[0021] In Fig. 1, for example, a digital signal input terminal 1 for a signal modulated by an RF signal, an input (OPTICAL1, 2) terminal 2, 3 for an optical signal, and an input (COAXIAL 1) for a signal from a coaxial cable are provided. ) Terminal 4, etc. are used as input terminals for digital audio signals.

[0022] The signal from the input terminal 1 is called up by the RF demodulator 5 corresponding to the digital signal from the terminal 1, and is supplied to the selected switch circuit 6 simultaneously with the signals from the input terminals 2 and 3. Optical tran...

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Abstract

Electronic equipment switches inputs and outputs of audio-visual equipment when inputs and outputs that are not connected are selected. A microcomputer determines whether the electronic equipment is placed in a mode for automatically switching an input terminal. When the automatic mode is not set, an input terminal is switched to a designated input. When the automatic mode is set and a signal at a digital signal input terminal is detected, the input terminal is switched to the digital signal input terminal. When a digital signal is not detected, the electronic equipment sequentially selects a signal at optical, coaxial and analog terminals.

Description

[0001] This application is a divisional application, the application number of the parent case is 98801754.7, the first prior application number of the parent case is JP97-246943, and the corresponding filing date is September 11, 1997. technical field [0002] The present invention relates to electronic equipment suitable for use in audio visual (AV) equipment, for example. The electronic device of the present invention is especially suitable for users who feel uncomfortable or mistaken for a malfunction due to choosing the wrong input and output when selecting the input and output of audio and video signals, thus worrying that the specially broadcast high-quality digital signal cannot be reproduced. Circumstances, this concern can be relieved. Background technique [0003] For example, in the field of audio-visual (AV) equipment, a variety of signal source devices have been developed in recent years, and selecting signals from these various signal source devices has become...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/44H04N5/765H04N5/775
CPCH04N5/765H04N5/775H04N5/44H04N21/4135H04N21/436H04N21/43632
Inventor 朝仓启一
Owner SONY CORP
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