US 7,548,861 B2Granted

Speech recognition system

AssigneeDenso Corporation

InventorToru Nada

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Abstract

An audio operating unit of an audio apparatus is used for speech recognition. Specifically, when it is determined that a speech recognition start switch has been pressed, a speech recognition apparatus outputs a signal indicating volume down to a mute level to an audio-apparatus main body of the audio apparatus via an in-vehicle LAN. In addition, a signal indicating that speech recognition is in operation is outputted to various ECUs via the in-vehicle LAN so that speech recognition is performed. The audio-apparatus main body that has acquired the signal indicating volume down to a mute level lowers the volume to the mute level, while ignoring an output signal from the audio operating unit. On the other hand, the speech recognition apparatus executes a process related to speech recognition by, e.g., selecting or determining one of candidate words based on the output signal from the audio operating unit.

Claims28

Dependent claims

A speech recognition system in a vehicle, the system comprising:

a speech recognition apparatus for performing speech recognition;
an electronic apparatus for performing at least a specified operation;
and
a communication network via which the speech recognition apparatus and the electronic apparatus are communicative,
wherein the speech recognition apparatus includes:
a notifying unit for transmitting, when performing speech recognition, an operating signal indicating that the speech recognition is in operation to the electronic apparatus;
a speech recognizing unit for performing speech recognition to specify a candidate for a speech inputted by a user;
a reporting unit for reporting the specified candidate so as to require the user to indicate an instruction;
and
a first control unit for executing, when receiving an instruction signal indicating an operation performed by the user, a subsequent process based on the received instruction signal,
wherein the electronic apparatus includes:
a receiving unit for receiving an operation performed by the user and generating a corresponding instruction signal;
and
a second control unit for,
when not receiving the operating signal, determining that the instruction signal is not related to speech recognition and executing the specified operation based on the instruction signal, and
when receiving the operating signal, determining that the instruction signal is related to speech recognition and transmitting, without executing the specified operation based on the instruction signal, the instruction signal to the speech recognition apparatus, and
wherein the speech recognition apparatus then executes the subsequent process based on the instruction signal transmitted from the electronic apparatus.

14 more elements

A speech recognition system in a vehicle, the system comprising:

a speech recognition apparatus for performing speech recognition;
an electronic apparatus for performing at least a specified operation;
an operating panel for distributing an instruction signal corresponding to an operation performed by a user;
and
a communication network via which the speech recognition apparatus, the operating panel, and the electronic apparatus are mutually communicative,
wherein the speech recognition apparatus includes:
a first receiving unit for receiving the instruction signal from the operating panel;
a notifying unit for transmitting, when performing speech recognition, an operating signal indicating that the speech recognition is in operation to the electronic apparatus;
a speech recognizing unit for performing speech recognition to output a candidate for a speech inputted by a user;
a reporting unit for reporting the candidate so as to require the user to indicate an instruction;
and
a first control unit for executing, when receiving an instruction signal specifying an item from the candidate by the instruction performed by the user via the operating panel, a subsequent process based on the received instruction signal from the operating panel,
wherein the electronic apparatus includes:
a second receiving unit for receiving the instruction signal from the operating panel performed by the user;
and
a second control unit for,
when not receiving the operating signal, determining that the instruction signal is not related to speech recognition and executing the specified operation based on the instruction signal, and
when receiving the operating signal, determining that the instruction signal is related to speech recognition and not executing the specified operation based on the instruction signal, and
wherein the speech recognition apparatus then executes the subsequent process based on the instruction signal transmitted from the operating panel.

16 more elements

Dependencies are inferred from the claim text.

Facts

Application: 11/511,238Filed 29 Aug 2006
Priority: JP 2005-25189531 Aug 2005
Published: US 2007/0055531 A18 Mar 2007
Granted: 16 Jun 2009
Term ends: Not estimatedThe source records don’t support an estimate.

Classification4 codes

G10L 15/28
Speech recognition: constructional details of speech recognition systems
B60R 16/0373
For occupant comfort , e.g. for automatic adjustment of appliances according to personal settings, e.g. seats, mirrors, steering wheel: voice control
G10L
Speech analysis techniques or speech synthesis
B60R
Vehicle fittings and parts