EP0855715A2
Expired / Lapsed
EP
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DVD audio disk reproducing device and method thereof
Assignee: Samsung Electronics Co Ltd
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Filing: 1998-01-28
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Granted: —
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Expires: 2018-01-28
Abstract
Abstract A DVD audio disk on a lead-in area of which an audio title information management table is stored, and on a data area of which an audio pack of linear PCM mode is stored, wherein first, second and third quantization bits, first, second and third sampling frequencies, and information relative to the number of audio channels are all recorded on the title information management table, the audio pack being provided with audio packets made up with the quantization bits, the sampling frequencies and the information relative to the number of channels all recorded on the title management table, the packets further containing audio data.
Inventors
- 👤 Jung-Kwon Heo
- 👤 Jae-Hoon Heo
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-01 08:47
CPC Classifications
G; G11; G11B; G11B20/00; G11B20/10; G11B20/12; G11B20/1217; G11B20/1251; G11B7/00; G11B7/08; G11B20/00007; G11B20/10527; G11B27/00; G11B27/02; G11B27/031; G11B27/034; G11B27/10; G11B27/102; G11B27/105; G11B27/19; G11B27/28; G11B27/30; G11B27/3027; G11B27/32; G11B27/327; G11B27/329; G11B27/34; H; H04; H04N; H04N9/00; H04N9/79; H04N9/80; H04N9/804; H04N9/806; H04N9/8063; G11B2020/10537; G11B2020/10592; G11B2220/00; G11B2220/20; G11B2220/25; G11B2220/2537; G11B2220/2562; H04N5/00; H04N5/76; H04N5/84; H04N5/85; H04N9/8042
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
137 words
A DVD audio disk to store audio data, comprising: information areas each storing an audio title
information management table; and respective data areas each storing audio packs of a
linear pulse code modulated (PCM) mode; wherein the audio title information management table
includes a first, second or third number of quantization
bits corresponding to the audio data, a first, second or
third sampling frequency corresponding to the audio data,
and information relative to a number of audio channels of
the audio data, and each audio pack including audio
packets having the first, second or third number of
quantization bits, the first, second or third sampling
frequency and the information relative to the number of
channels which are recorded in the audio title information
management table, and the audio packets further containing
corresponding portions of the audio data.
Claim 2
Dependent Claim
129 words
A DVD audio disk as claimed in claim 1, wherein the
first, second and third quantization number of bits are
16, 20, and 24 bits, respectively, the first, second and
third sampling frequencies are 48, 96, and 192KHz,
respectively, a maximum number of the audio channels being
13, and the number of channels being determined by the
following equation: N = Mbr Fs * Qb Wherein, Fs is the sampling frequency (Hz) of the audio
data, Qb is the number of quantization bits of the audio data, Mbr is a maximum data transmission rate (Mbps) of the DVD
audio disk, and N is a maximum number of recordable channels as determined
by the maximum data transmission rate, sampling frequency,
and the number of quantization bits of the DVD disk.
Claim 3
Dependent Claim
128 words
A DVD audio disk to store audio data, comprising: information areas each storing a title information
management table; and respective data areas each storing a pseudo-lossless
psychoacoustic coding mode; wherein the title information management table
includes a first, second or third number of quantization
bits corresponding to the audio data, a, first, second or
third sampling frequency corresponding to the audio data,
and information relative to a number of audio channels of
the audio data, and each audio pack including audio
packets having the first, second or third number of
quantization bits, the first, second or third sampling
frequency, and the information relative to the number of
channels which are recorded in the title information
management table, and the packets further containing
corresponding portions of the audio data.
Claim 4
Dependent Claim
168 words
A DVD audio disk as claimed in claim 1, wherein the
pseudo-lossless psychoacoustic coding mode uses a Digital
Theatre System (DTS) compressive coding mode, the first,
second and third numbers of quantization bits of the audio
data prior to compression are 16, 20, and 24 bits,
respectively, the first, second and third sampling
frequencies are 48, 96, and 192 KHz, respectively, a
maximum number of the audio channels being 16 and, the
number of channels being determined by the following
equation: N = Mbr * Ccr Fs * Qb Wherein, Fs is the sampling frequency (Hz), of the audio data, Qb:
number of quantization bits of the audio data, Mbr is a maximum data transmission rate (Mbps) of the DVD
audio disk. Ccr is a compression ratio in accordance with the DTS
compressive coding mode, and N is a maximum number of
recordable channels as determined by the data transmission
rate, the sampling frequency, the number of quantization
bits, and the compression ratio of the DVD audio disk.
Claim 5
Dependent Claim
235 words
A DVD audio disk to store audio data, comprising: information areas each storing a title information
management table; and respective data areas each storing sequential audio
packs; wherein the DVD audio disk conforms to the MPEG2
system layer standards; wherein the title information management table has an
audio stream attribute area which includes an audio coding
mode, a number of quantization bits, and a sampling
frequency related to the audio packs, and information
related to the number of audio channels, each of the audio packs includes a pack header and
audio packets; each of the audio packets includes a packet header,
sub-stream ID, audio frame information, audio data
information, and a portion of the audio data; and the number of channels of audio data received is
determined by the following equation: N = Mbr * Ccr Fs * Qb and wherein Fs is the sampling frequency (Hz), having a
value of one of 48KHz, 96KHz and 192KHz Qb is the number
of quantization bits having a value of one of 16 bits, 20
bits, and 24 bits. Mbr is a maximum data transmission
rate (10.08Mbps) of the DVD audio disk. Ccr is a compression ratio in accordance with a
compressive coding mode, and N is a maximum number of recordable channels as determined
by the data transmission rate, the sampling frequency, the
number of quantization bits, and the compression ratio of
the DVD audio disk.
Claim 6
Dependent Claim
121 words
A DVD audio disk reproducing device comprising: a data receiver (114) to receive audio data
reproduced from a disk; a controller (111) to analyze the audio data
reproduced from the disk to thereby generate an audio
control signal containing an audio coding mode, a sampling frequency, a number of channels and quantization
information; an audio decoder (115) having a plurality of
decoders, one of the plurality of decoders to decode the
audio data received after being selected according to the
audio coding mode of the audio data, including multi-channel
mixing, sampling frequency converting and
requantizing the decoded audio data, according to the
audio control signal; and an audio output (116, 117) to convert the audio data
into an analog audio signal.
Claim 7
Dependent Claim
143 words
A DVD audio disk reproducing device as claimed in
claim 6, wherein the audio decoder (115) comprises: a stream selector (212) to select one of a plurality
of audio streams, which form the audio data according to
the audio coding mode; a linear PCM decoder (213) to decode the selected
audio stream if the selected audio stream is a linear PCM
audio stream output from the stream selector (212), the
linear PCM decoder sampling frequency converting, multi-channel
down mixing and requantizing the decoded audio
data decoded according to the audio control signal; and a data decoder (212) to decode the selected audio
stream if the selected audio stream is a compressed audio
stream output from the stream selector, using a
corresponding decompression algorithm and to sampling
frequency convert, multi-channel down mix and requantize
the decoded audio data, according to the audio control
signal.
Claim 8
Independent Claim
210 words
A device for reproducing a DVD video/audio disk,
comprising: a data receiver (314) to receive data retrieved from
the disk; a controller (311) to analyze the data retrieved from
the disk to discriminate a kind of the disk, the
controller (311) generating an audio control signal
containing a video control signal, an audio coding mode,
a sampling frequency, a number of channels and
quantization information in case of the DVD video disk, or
generating only the audio control signal in case of the
DVD audio disk; a stream parser (412) to separate the analyzed data
output from the data receiver into video and audio data; a video decoder (415) to decode the video data output
from the stream parser (412); a video output (415, 416, 318) to NTSC encode the
decoded video data, and convert the encoded video data to
an analog video signal; an audio decoder (413) having a plurality of
decoders, one of the decoders being selected according to
the audio coding mode of the audio data to thereby decode
the received audio data, including multi-channel mixing,
sampling frequency converting and requantizing the audio
data decoded, according to the audio control signal; and an audio output (414) to convert the decoded audio
data to an analog audio signal.
Claim 9
Dependent Claim
132 words
A DVD video/audio disk reproducing device as claimed
in claim 8, wherein the audio decoder (413) comprises: a stream selector audio streams which form the audio
data according to the audio coding mode; a linear PCM decoder to decode the selected audio
stream is the selected audio stream is a linear PCM audio
stream output from the stream selector, the linear PCM
decoder sampling frequency converting, multi-channel down
mixing and requantizing the decoded audio data according
to the audio control signal; and a data decoder to decode the selected audio stream if
the selected audio stream is a compressed audio stream
output from the stream selector, using a corresponding
decompression algorithm, the data decoder sampling
frequency converting, multi-channel down mixing and
requantizing the audio data decoded, according to the
audio control signal.
Claim 10
Independent Claim
138 words
A method for reproducing a DVD audio disk having
information areas each having a title information
management table recorded therein, and respective data
areas each having sequential audio packs recorded therein,
the method comprising the steps of: reading the title information management table for a
title to be reproduced, and confirming an audio coding
mode, sampling frequency, quantization bit number and
channel number of the audio data recorded relating to the
title; setting the audio decoding mode according to the
confirmation; controlling the DVD audio disk in a playback mode,
decoding the audio data according to the set audio
decoding mode and performing sampling frequency
conversion, multi-channel down mixing and requantization
of the decoded data according to the audio coding mode to
generate processed decoded audio data; and converting the processed decoded audio data to an
analog signal.
Claim 11
Independent Claim
177 words
A method for reproducing a DVD audio disk having
information areas each having a title information
management table recorded therein, and respective data
areas each having sequential audio packs recorded therein,
the method comprising the steps of: reading the title information management table of a
title to be reproduced, and discriminating a kind of the
DVD disk recorded; confirming video control information and audio
control information containing a coding mode, sampling
frequency, quantization bit number and channel number of
the audio data in case of the DVD disk in the
discrimination step, or confirming only the audio control
information in case of the DVD audio disk; setting an audio decoding mode according to the
confirmation in case of the DVD audio disk; controlling the DVD audio disk in a playback mode,
decoding the audio data according to an audio coding mode
and performing sampling frequency conversion, multi-channel
down mixing and requantization of the decoded data
according to the audio coding mode, to generate processed
decoded data; and converting the processed decoded audio data to an
analog signal.
References Cited (Backward Citations)
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