EP1001549A2
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EP
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Audio signal processing apparatus
Assignee: JVCKenwood Corp
•
Filing: 1999-11-04
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Granted: —
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Expires: 2019-11-04
Abstract
Abstract An audio signal encoding apparatus includes a device for compressing multiple-channel digital audio signals into compression-resultant multiple-channel signals respectively. The multiple-channel digital audio signals relate to a sampling frequency and a quantization bit number. The compression-resultant multiple-channel signals, a signal representative of the sampling frequency, and a signal representative of the quantization bit number are formatted into a formatting-resultant signal. The formatting-resultant signal contains a sub packet and a sync information portion. The sub packet contains at least portions of the compression-resultant multiple-channel signals. The sync information portion contains the signal representative of the sampling frequency and the signal representative of the quantization bit number.
Inventors
- 👤 Yoshiaki Tanaka
- 👤 Shoji Ueno
- 👤 Norihiko Fuchigami
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-31 19:14
CPC Classifications
G; G11; G11B; G11B27/00; G11B27/10; G11B27/19; G11B27/28; G11B27/30; G11B27/309; G11B20/00; G11B20/00007; G11B20/10; G11B20/10527; G11B27/3027
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
106 words
An audio signal encoding apparatus comprising: means for compressing multiple-channel digital audio signals
into compression-resultant multiple-channel signals respectively,
the multiple-channel digital audio signals relating to a sampling
frequency and a quantization bit number; and means for formatting the compression-resultant multiple-channel
signals, a signal representative of the sampling frequency,
and a signal representative of the quantization bit number into a
formatting-resultant signal, the formatting-resultant signal
containing a sub packet and a sync information portion, the sub
packet containing at least portions of the compression-resultant
multiple-channel signals, the sync information portion containing
the signal representative of the sampling frequency and the signal
representative of the quantization bit number.
Claim 2
Dependent Claim
72 words
An optical recording medium storing a formatting-resultant
signal containing a sub packet and a sync information portion, the
sub packet containing at least portions of compression-resultant
multiple-channel signals which result from compressing multiple-channel
digital audio signals respectively, the sync information
portion containing a signal representative of a sampling frequency
related to the multiple-channel digital audio signals and a signal
representative of a quantization bit number related to the multiple-channel
digital audio signals.
Claim 3
Dependent Claim
101 words
An audio signal decoding apparatus comprising: means for separating a formatting-resultant signal into a sub
packet and a sync information portion; means for extracting compression-resultant multiple-channel
signals from the sub packet; means for expanding the extracted compression-resultant
multiple-channel signals into multiple-channel digital audio signals
respectively; means for extracting a signal representative of a sampling
frequency and a signal representative of a quantization bit number
from the sync information portion; and means for converting the multiple-channel digital audio
signals into analog audio signals in response to the signal
representative of the sampling frequency and the signal
representative of the quantization bit number.
Claim 4
Independent Claim
115 words
A method of transmitting an audio signal, comprising the
steps of: compressing multiple-channel digital audio signals into
compression-resultant multiple-channel signals respectively, the
multiple-channel digital audio signals relating to a sampling
frequency and a quantization bit number; formatting the compression-resultant multiple-channel
signals, a signal representative of the sampling frequency, and a
signal representative of the quantization bit number into a
formatting-resultant signal, the formatting-resultant signal
containing a sub packet and a sync information portion, the sub
packet containing at least portions of the compression-resultant
multiple-channel signals, the sync information portion containing
the signal representative of the sampling frequency and the signal
representative of the quantization bit number; and transmitting the formatting-resultant signal through a
communication line.
Claim 5
Dependent Claim
76 words
An audio signal encoding apparatus comprising: means for compressing multiple-channel digital audio signals
into compression-resultant multiple-channel signals respectively;
and means for formatting the compression-resultant multiple-channel
signals and an identifier into a formatting-resultant signal,
the formatting-resultant signal containing a sub packet and a sync
information portion, the sub packet containing at least portions of
the compression-resultant multiple-channel signals, the sync
information portion containing the identifier, the identifier
representing that signals in the sub packet are compression-resultant
signals.
Claim 6
Dependent Claim
54 words
An optical recording medium storing a formatting-resultant
signal containing a sub packet and a sync information portion, the
sub packet containing at least portions of compression-resultant
multiple-channel signals which result from compressing multiple-channel
digital audio signals respectively, the sync information
portion containing an identifier representing that signals in the sub
packet are compression-resultant signals.
Claim 7
Dependent Claim
74 words
An audio signal decoding apparatus comprising: means for separating a formatting-resultant signal into a sub
packet and a sync information portion; means for extracting compression-resultant multiple-channel
signals from the sub packet; means for extracting an identifier from the sync information
portion, the identifier representing that signals in the sub packet
are compression-resultant signals; and means for expanding the extracted compression-resultant
multiple-channel signals into multiple-channel digital audio signals
in response to the extracted identifier, respectively.
Claim 8
Independent Claim
85 words
A method of transmitting an audio signal, comprising the
steps of: compressing multiple-channel digital audio signals into
compression-resultant multiple-channel signals respectively; formatting the compression-resultant multiple-channel signals
and an identifier into a formatting-resultant signal, the formatting-resultant
signal containing a sub packet and a sync information
portion, the sub packet containing at least portions of the
compression-resultant multiple-channel signals, the sync
information portion containing the identifier, the identifier
representing that signals in the sub packet are compression-resultant
signals; and transmitting the formatting-resultant signal through a
communication line.
Claim 9
Dependent Claim
76 words
A DVD-audio disc storing an audio pack loaded with a
formatting-resultant signal containing a sub packet and a sync
information portion, the sub packet containing at least portions of
compression-resultant multiple-channel signals which result from
compressing multiple-channel digital audio signals respectively, the
sync information portion containing a signal representative of a
sampling frequency related to the multiple-channel digital audio
signals and a signal representative of a quantization bit number
related to the multiple-channel digital audio signals.
Claim 10
Dependent Claim
29 words
An audio signal decoding apparatus as recited in claim 3,
further comprising means for separating an audio packet from an
audio pack, the audio packet containing said formatting-resultant
signal.
Claim 11
Dependent Claim
58 words
A DVD-audio disc storing an audio pack loaded with a
formatting-resultant signal containing a sub packet and a sync
information portion, the sub packet containing at least portions of
compression-resultant multiple-channel signals which result from
compressing multiple-channel digital audio signals respectively, the
sync information portion containing an identifier representing that
signals in the sub packet are compression-resultant signals.
Claim 12
Dependent Claim
29 words
An audio signal decoding apparatus as recited in claim 7,
further comprising means for separating an audio packet from an
audio pack, the audio packet containing said formatting-resultant
signal.
Claim 13
Dependent Claim
86 words
A transmission medium for transmitting data being in a format
and being made by a method comprising the steps of: compressing multiple-channel digital audio signals into
compression-resultant multiple-channel signals respectively; and formatting the compression-resultant multiple-channel signals
and an identifier into a formatting-resultant signal, the formatting-resultant
signal containing a sub packet and a sync information
portion, the sub packet containing at least portions of the
compression-resultant multiple-channel signals, the sync
information portion containing the identifier, the identifier
representing that signals in the sub packet are compression-resultant
signals.
Claim 14
Dependent Claim
54 words
A transmission medium for transmitting a formatting-resultant
signal containing a sub packet and a sync information portion, the
sub packet containing at least portions of compression-resultant
multiple-channel signals which result from compressing multiple-channel
digital audio signals respectively, the sync information
portion containing an identifier representing that signals in the sub
packet are compression-resultant signals.
Claim 15
Dependent Claim
86 words
A transmission medium for transmitting a formatting-resultant
signal which is decoded by an audio signal decoding apparatus
comprising: means for separating the formatting-resultant signal into a sub
packet and a sync information portion; means for extracting compression-resultant multiple-channel
signals from the sub packet; means for extracting an identifier from the sync information
portion, the identifier representing that signals in the sub packet
are compression-resultant signals: and means for expanding the extracted compression-resultant
multiple-channel signals into multiple-channel digital audio signals
in response to the extracted identifier, respectively.
Claim 16
Dependent Claim
89 words
A transmission medium for transmitting an audio signal by a
method comprising the steps of: compressing multiple-channel digital audio signals into
compression-resultant multiple-channel signals respectively; formatting the compression-resultant multiple-channel signals
and an identifier into a formatting-resultant signal, the formattingresultant
signal containing a sub packet and a sync information
portion, the sub packet containing at least portions of the
compression-resultant multiple-channel signals, the sync
information portion containing the identifier, the identifier
representing that signals in the sub packet are compression-resultant
signals; and transmitting the formatting-resultant signal through a
communication line.
Claim 17
Dependent Claim
120 words
A transmission medium for transmitting data being in a format
and being made by an audio signal encoding apparatus comprising: means for compressing multiple-channel digital audio signals
into compression-resultant multiple-channel signals respectively,
the multiple-channel digital audio signals relating to a sampling
frequency and a quantization bit number; and means for formatting the compression-resultant multiple-channel
signals, a signal representative of the sampling frequency,
and a signal representative of the quantization bit number into a
formatting-resultant signal, the formatting-resultant signal
containing a sub packet and a sync information portion, the sub
packet containing at least portions of the compression-resultant
multiple-channel signals, the sync information portion containing
the signal representative of the sampling frequency and the signal
representative of the quantization bit number.
Claim 18
Dependent Claim
72 words
A transmission medium for transmitting a formatting-resultant
signal containing a sub packet and a sync information portion, the
sub packet containing at least portions of compression-resultant
multiple-channel signals which result from compressing multiple-channel
digital audio signals respectively, the sync information
portion containing a signal representative of a sampling frequency
related to the multiple-channel digital audio signals and a signal
representative of a quantization bit number related to the multiple-channel
digital audio signals.
Claim 19
Dependent Claim
113 words
A transmission medium for transmitting a formatting-resultant
signal which is decoded by an audio signal decoding apparatus
comprising: means for separating a formatting-resultant signal into a sub
packet and a sync information portion; means for extracting compression-resultant multiple-channel
signals from the sub packet; means for expanding the extracted compression-resultant
multiple-channel signals into multiple-channel digital audio signals
respectively; means for extracting a signal representative of a sampling
frequency and a signal representative of a quantization bit number
from the sync information portion; and means for converting the multiple-channel digital audio
signals into analog audio signals in response to the signal
representative of the sampling frequency and the signal
representative of the quantization bit number.
Claim 20
Dependent Claim
119 words
A transmission medium for transmitting an audio signal by a
method comprising the steps of: compressing multiple-channel digital audio signals into
compression-resultant multiple-channel signals respectively, the
multiple-channel digital audio signals relating to a sampling
frequency and a quantization bit number; formatting the compression-resultant multiple-channel
signals, a signal representative of the sampling frequency, and a
signal representative of the quantization bit number into a
formatting-resultant signal, the formatting-resultant signal
containing a sub packet and a sync information portion, the sub
packet containing at least portions of the compression-resultant
multiple-channel signals, the sync information portion containing
the signal representative of the sampling frequency and the signal
representative of the quantization bit number; and transmitting the formatting-resultant signal through a
communication line.
Claim 21
Dependent Claim
143 words
An audio signal encoding apparatus comprising: an fs conversion circuit for equalizing sampling frequencies of
first multiple-channel digital audio signals to convert a set of the
first multiple-channel digital audio signals into a set of second
multiple-channel digital audio signals; means for compressing the second multiple-channel digital
audio signals into compression-resultant multiple-channel signals
respectively, the second multiple-channel digital audio signals
relating to a sampling frequency and a quantization bit number; and means for formatting the compression-resultant multiple-channel
signals, a signal representative of the sampling frequency,
and a signal representative of the quantization bit number into a
formatting-resultant signal, the formatting-resultant signal
containing a sub packet and a sync information portion, the sub
packet containing at least portions of the compression-resultant
multiple-channel signals, the sync information portion containing
the signal representative of the sampling frequency and the signal
representative of the quantization bit number.
Claim 22
Dependent Claim
83 words
An optical recording medium storing a formatting-resultant
signal containing a sub packet and a sync information portion, the
sub packet containing at least portions of compression-resultant
multiple-channel signals which result from equalizing sampling
frequencies of multiple-channel digital audio signals and then
compressing the multiple-channel digital audio signals respectively,
the sync information portion containing a signal representative of a
sampling frequency related to the multiple-channel digital audio
signals and a signal representative of a quantization bit number
related to the multiple-channel digital audio signals.
Claim 23
Independent Claim
147 words
A method of transmitting an audio signal, comprising the
steps of: equalizing sampling frequencies of first multiple-channel
digital audio signals to convert a set of the first multiple-channel
digital audio signals into a set of second multiple-channel digital
audio signals; compressing the second multiple-channel digital audio signals
into compression-resultant multiple-channel signals respectively,
the second multiple-channel digital audio signals relating to a
sampling frequency and a quantization bit number; formatting the compression-resultant multiple-channel
signals, a signal representative of the sampling frequency, and a
signal representative of the quantization bit number into a
formatting-resultant signal, the formatting-resultant signal
containing a sub packet and a sync information portion, the sub
packet containing at least portions of the compression-resultant
multiple-channel signals, the sync information portion containing
the signal representative of the sampling frequency and the signal
representative of the quantization bit number; and transmitting the formatting-resultant signal through a
communication line.
Claim 24
Dependent Claim
151 words
A transmission medium for transmitting an audio signal by a
method comprising the steps of: equalizing sampling frequencies of first multiple-channel
digital audio signals to convert a set of the first multiple-channel
digital audio signals into a set of second multiple-channel digital
audio signals; compressing the second multiple-channel digital audio signals
into compression-resultant multiple-channel signals respectively,
the second multiple-channel digital audio signals relating to a
sampling frequency and a quantization bit number; formatting the compression-resultant multiple-channel
signals, a signal representative of the sampling frequency, and a
signal representative of the quantization bit number into a
formatting-resultant signal, the formatting-resultant signal
containing a sub packet and a sync information portion, the sub
packet containing at least portions of the compression-resultant
multiple-channel signals, the sync information portion containing
the signal representative of the sampling frequency and the signal
representative of the quantization bit number; and transmitting the formatting-resultant signal through a
communication line.
References Cited (Backward Citations)
EP0855715A2
Cited
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