AUDIO SIGNAL SUPPLYING DEVICE, PARAMETER PROVIDING SYSTEM, TELEVISION SET, AV SYSTEM, SPEAKER APPARATUS, AND AUDIO SIGNAL SUPPLYING METHOD

• US 20090147134A1
• Filed: 11/22/2008
• Published: 06/11/2009
• Est. Priority Date: 11/22/2007
• Status: Active Grant

• Current Assignee: Yamaha Corporation
• Original Assignee: Yamaha Corporation
• Inventors: Iwamatsu, Masayuki
• Granted Patent: US 8,050,425 B2
• Time in Patent Office: Days
• US Class Current: 348/484
• CPC Class Codes: H04N 21/439 Processing of audio elementary streams
• CPC Class Codes: H04N 21/6547 comprising parameters, e.g. for client setup
• CPC Class Codes: H04N 21/6581 Reference data, e.g. a movie identifier for ordering a movie or a product identifier in a home shopping application
• CPC Class Codes: H04N 5/60 for the sound signals
• CPC Class Codes: H04N 5/642 Disposition of sound reproducers
• CPC Class Codes: H04R 2420/05 Detection of connection of loudspeakers or headphones to amplifiers
• CPC Class Codes: H04S 3/002 Non-adaptive circuits, e.g. manually adjustable or static, for enhancing the sound image or the spatial distribution control circuits for electronic adaptation of the sound field H04S7/30

Abstract

An audio signal supplying device includes a connection terminal which is connected to a speaker unit and which outputs an audio signal to the speaker unit, a specifying section which specifies a type of the speaker unit connected to the connection terminal, an acquiring section which acquires a parameter corresponding to the type of the speaker unit specified by the specifying section from an outside, a storing section which stores the parameter acquired by the acquiring section, an inputting section into which the audio signal is input, an acoustic characteristic controlling section which adjusts an acoustic characteristic of the audio signal input into the inputting section based on the parameter stored in the storing section, and a supplying section which supplies the audio signal whose acoustic characteristic is adjusted by the acoustic characteristic controlling section to the connection terminal.

Claims

1. An audio signal supplying device, comprising:

a connection terminal which is connected to a speaker unit and which outputs an audio signal to the speaker unit;

a specifying section which specifies a type of the speaker unit connected to the connection terminal;

an acquiring section which acquires a parameter corresponding to the type of the speaker unit specified by the specifying section from an outside;

a storing section which stores the parameter acquired by the acquiring section;

an inputting section into which the audio signal is input;

an acoustic characteristic controlling section which adjusts an acoustic characteristic of the audio signal input into the inputting section, based on the parameter stored in the storing section; and

a supplying section which supplies the audio signal whose acoustic characteristic is adjusted by the acoustic characteristic controlling section to the connection terminal.

2. The audio signal supplying device according to claim 1, further comprising:

an identifying section which identifies the type of the speaker unit connected to the connection terminal,

wherein the specifying section specifies the type of the speaker unit identified by the identifying section as the type of the speaker unit connected to the connection terminal.

3. The audio signal supplying device according to claim 2, wherein the identifying section identifies the type of the speaker unit connected to the connection terminal by measuring a resistance value of an identification resistor provided in the speaker unit.

4. The audio signal supplying device according to claim 2, wherein the identifying section identifies the type of the speaker unit connected to the connection terminal by optically reading a figure attached to the speaker unit.

5. The audio signal supplying device according to claim 2, wherein the identifying section identifies the type of the speaker unit connected to the connection terminal by acquiring identification information stored in a storing section in the speaker unit.

6. The audio signal supplying device according to claim 2, wherein the identifying section has a radio communicating section;

wherein the identifying section transmits information indicating the type of the identified speaker unit to the specifying section via the radio communicating section; and

wherein the specifying section receives the information transmitted by the radio communicating section, and specifies a type of the speaker unit indicated by the information as the type of the speaker unit connected to the connection terminal.

7. The audio signal supplying device according to claim 1, further comprising:

a deciding section that decides whether or not a parameter corresponding to the type of the speaker unit which is specified by the specifying section is stored in the storing section,

wherein, when the deciding section decides that the parameter corresponding to the type of the speaker unit specified by the specifying section is not stored in the storing section, the acquiring section acquires the parameter corresponding to the type of the speaker unit from the outside;

wherein the storing section stores the type of the speaker unit corresponding to the parameter and the parameter so as to correlate mutually every time when the acquiring section acquires the parameter; and

wherein the acoustic characteristic controlling section adjusts the acoustic characteristic based on the parameter corresponding to the type of the speaker unit specified by the specifying section, out of parameters stored in the storing section.

8. The audio signal supplying device according to claim 1, wherein the acquiring section transmits request information indicating the type of the speaker unit specified by the specifying section to a server connected to a network, and acquires the parameter corresponding to the type of the speaker unit connected to the connection terminal by receiving the parameter transmitted from the server in response to the request.

9. The audio signal supplying device according to claim 1, wherein the acquiring section acquires the parameter corresponding to the type of the speaker unit connected to the connection terminal by reading the parameter stored in the storing section of the speaker unit connected to the connection terminal.

11. A television set, comprising:

the audio signal supplying device according to claim 1;

a displaying section which displays an image on a display screen based on an input video signal; and

an internal speaker arranged in a vicinity of the display screen, and which emits a sound based on the supplied audio signal,

wherein the storing section stores a parameter corresponding to the internal speaker;

wherein the supplying section supplies the audio signal whose acoustic characteristic is adjusted by the acoustic characteristic controlling section to the connection terminal or the internal speaker; and

wherein the acoustic characteristic controlling section adjusts the acoustic characteristic based on the parameter corresponding to the internal speaker stored in the storing section, when the supplying section supplies the audio signal to the internal speaker.

12. An AV system, comprising:

the television set according to claim 11; and

a television stand equipped with a speaker apparatus connected to the connection terminal.

10. A parameter providing system, comprising:

an audio signal supplying device; and

a server which is connected to the audio signal supplying device through a network,

wherein the audio signal supplying device, including;

a connection terminal which is connected to a speaker unit and which outputs an audio signal to the speaker unit;

a specifying section which specifies a type of the speaker unit connected to the connection terminal;

an acquiring section transmits request information indicating the type of the speaker unit specified by the specifying section to the server through the network and acquires the parameter corresponding to the type of the speaker unit connected to the connection terminal by receiving the parameter transmitted from the server in response to the request;

an inputting section into which the audio signal is input;

an acoustic characteristic controlling section which adjusts an acoustic characteristic of the audio signal input into the inputting section, based on the parameter received by the receiving section; and

a supplying section which supplies the audio signal whose acoustic characteristic is adjusted by the acoustic characteristic controlling section to the connection terminal; and

wherein the server, including;

a server storing section which stores a plurality of parameters corresponding to types of the speaker units; and

a transmitting section which transmits the parameter corresponding to the type of the speaker unit indicated by the request information through the network, out of parameters stored in the server storing section, to the audio signal supplying device.

13. A speaker apparatus connected to an audio signal supplying device which supplies an audio signal whose acoustic characteristic is adjusted on the basis of a parameter to the speaker apparatus, the parameter being acquired from the speaker apparatus to the audio signal supplying device, the speaker apparatus comprising:

an inputting section connected to a connection terminal of the audio signal supplying device and to which the audio signal is input through the connection terminal;

a speaker which emits a sound based on the audio signal input from the inputting section; and

a storing section which stores parameters used in the audio signal supplying device.

14. A speaker apparatus connected to an audio signal supplying device which specifies a type of the speaker apparatus based on a measured result of a resistance value of an identification resistor provided in the speaker apparatus, acquires a parameter corresponding to the specified type of the speaker apparatus from the speaker apparatus to the audio signal supplying device, and supplies an audio signal whose acoustic characteristic is adjusted on the basis of the acquired parameter, the speaker apparatus comprising:

an inputting section connected to a connection terminal of the audio signal supplying device and to which the audio signal is input through the connection terminal;

a speaker which emits a sound based on the audio signal input from the inputting section;

an identification resistor which shows a predetermined resistance value; and

a measuring terminal which connects the identification resistor to the audio signal supplying device.

15. An audio signal supplying method applied to an audio signal supplying device equipped with a connection terminal to which a speaker unit is connected and which outputs an audio signal to the speaker unit, comprising:

specifying a type of the speaker unit connected to the connection terminal;

acquiring a parameter corresponding to the type of the speaker unit specified in the specifying process from an outside;

storing the parameter acquired in the acquiring process in a storing section;

inputting the audio signal;

adjusting an acoustic characteristic of the audio signal input in the inputting process, based on the parameter stored in the storing section; and

supplying the audio signal whose acoustic characteristic is adjusted in the acoustic characteristic controlling process to the connection terminal.