CN100501709C - Signal processing device and transmission method and transmission media - Google Patents

Abstract

Disclosed is a signal processor, transmission method and transmission media which can correctly manage the sound channels of the multi-channels data. A disk player and a recorder are connected via two serial interfaces of the IEEE1394 standard, a prescribed data stream is formed by containing an audio pack, for example, and in a prescribed area provided inside real data the data stream, channel information corresponding to the multi-channel audio contents is composed of a PCM stored in the pack which is stored as an identifier of audio contents, located adjacent to the audio contents, and converted to a packet which corresponds to the serial interface of IEEE1394 standard and transmitted through the serial interface.

Description

Signal processing apparatus, transmission method and transmission medium

The application be submitted on May 17th, 2006, application number be 200610084780.8, denomination of invention divides an application for the application of " signal processing apparatus, transmission method and transmission medium ".

Technical field

The invention relates to by serial line interface to DVD (Digital Versatile Disc: Digital video disc) signal processing apparatus of the grouping (Packet) transmitted of multiplexing data stream such as audio frequency, to its transmission method that transmits, and transmission medium.

Background technology

As everyone knows, existing technology is by digital interface (also being called serial line interface especially) transmit digital content data.

For example open flat 10-285234 communique, spy as the spy and open in the flat 11-45512 communique disclosedly, content is to transmit after adding header on each MPEG of cutting apart (Moving picture Experts Group Motion Picture Experts Group standard) transport stream.

When the foregoing multipath transmission, may produce packet loss.Need information processing packet loss with header for this reason.

But, wished in the last few years that transmission resembles to have the DVD audio format and comprised A bag, RTI (Real Time Information real-time information) bag, the audio file of SPCT (still frame signal) bag and the content of the multiplexing file structure of DVD (video) file.

Like this, when having the audio data stream of multiplexing file structure according to the IEEE1394 transmission, the problem of particular importance is that transmission is wanted to carry out the sound channel management, can correctly reset.In addition, how easily grasping channel information on existing digital interface is a problem.That is, in existing IEC958 specification, can the sound channel management that carry out the multichannel audio content be a problem.

In addition, when transmission has the data stream of multiplexing file structure like this, particularly wish,, need what kind of decoding processing and will announce in advance by format analysis processing for enabling to determine compress mode in the stage of digital interface.Can receive " optionally ", and can reset efficiently.For example, when being the data that to decode, can take the measure ending to receive, and whether detect be packed data, reset efficiently.

In addition, when the data of above-mentioned DVD audio format were high-quality and will transmit so high-quality data, copyright administration was important problem (unconditionally duplicate in order not allow, the protection literary property is a problem).

In addition, in the time can duplicating, by high-quality data-switching being become to be equivalent to sampling frequency (for example 44.1KHz or 48KHz), figure place (for example 16), 2 channel stereo of CD (mini disk), allowing to duplicate also is a problem.

In addition, wish in the coded system of so high-quality voice data, to have a plurality of data processing measures of taking these coded systems of satisfying.

Summary of the invention

For this reason, the present invention in view of the above problems, provide a kind of by digital interface to the signal processing apparatus that comprises the voice signal that addresses these problems etc. and transmit, transmission method, and transmission medium according to multiplexing contents such as DVD audio format and DVD video formats.

The present invention is in order to solve above-mentioned problem, by following 1) to 18) every middle device of putting down in writing or method formation.

Promptly

1), a kind of signal processing apparatus, it is characterized in that: when comprising data that audio pack forms specified data stream originally and divide into groups, in the inner regulation zone that is provided with of real data in this grouping, the above-mentioned channel information of the audio content of will be in the above-mentioned bag stored multichannel that constitutes corresponding to PCM is as the identifier of above-mentioned audio content, store in abutting connection with setting with above-mentioned audio content, and it has the block processing device that the form of agreement in accordance with regulations divides into groups.

2), a kind of signal processing apparatus, it is characterized in that: when comprising data that audio pack forms specified data stream originally and divide into groups, in the inner regulation zone that is provided with of real data in this grouping, the above-mentioned channel information of the audio content of will be in the above-mentioned bag stored multichannel that constitutes corresponding to PCM is as the identifier of above-mentioned audio content, deposit in abutting connection with configuration with above-mentioned audio content, have simultaneously and receive the data that form divided into groups, transmits of agreement, the device that above-mentioned information is decoded at least in accordance with regulations.

3), a kind of transmission method, it is characterized in that: comprise originally audio pack form specified data stream, when being converted to the grouping corresponding to the serial line interface of regulatory specifications, the above-mentioned channel information of will be in the inner set regulation zone of the real data in this grouping, in above-mentioned bag stored multichannel audio content corresponding to the PCM formation is as the identifier of above-mentioned audio content, deposit in abutting connection with setting with above-mentioned audio content, be converted to the grouping corresponding to the serial line interface of regulatory specifications, the serial line interface by the afore mentioned rules specification transmits.

4), a kind of transmission medium, it is characterized in that: in comprising audio pack formation specified data stream originally, in the set regulation zone, the inside of real data in grouping, the above-mentioned channel information of the audio content of will be in the above-mentioned bag stored multichannel that constitutes corresponding to PCM is as the identifier of above-mentioned audio content, deposit in abutting connection with setting with above-mentioned audio content, be converted to grouping, be transferred to receiving end from transmitting terminal corresponding to the serial line interface of regulatory specifications.

5), a kind of signal processing apparatus, it is characterized in that: when the data that will comprise voice data formation specified data stream are originally divided into groups, in the set regulation zone, the inside of real data in this grouping, stored table is shown in the identifying information of the afore mentioned rules compress mode of the voice data of stored regulation compress mode in the above-mentioned bag, has the block processing device that the form by the regulation agreement divides into groups simultaneously.

6), a kind of signal processing apparatus, it is characterized in that: when the data that will comprise voice data formation specified data stream are originally divided into groups, in the set regulation zone, real data inside in this grouping, deposit the identifying information of the afore mentioned rules compress mode of the voice data of stored regulation compress mode in the above-mentioned bag of expression, have simultaneously and receive the data that form divided into groups, sends of agreement in accordance with regulations, and the device of at least above-mentioned information being decoded.

7), a kind of transmission method, it is characterized in that: comprise originally voice data form specified data stream, when converting the grouping corresponding to the serial line interface of regulatory specifications to, in the set regulation zone, the inside of real data in this grouping, depositing the identifying information of representing the afore mentioned rules compress mode of the voice data of stored regulation compress mode in the above-mentioned bag, be converted to the grouping corresponding to the serial line interface of regulatory specifications, the serial line interface by the afore mentioned rules specification transmits.

8), a kind of transmission medium, it is characterized in that: comprise audio pack originally and form predetermined data stream, in the set zone, real data inside in grouping, identifying information with the afore mentioned rules compress mode of stored regulation compress mode voice data in the above-mentioned bag of expression, convert grouping to, send to receiving end from transmitting terminal corresponding to the serial line interface of regulatory specifications.

9), a kind of signal conditioning package, it is characterized in that comprising: block processing device, this device was when comprising data that audio pack forms predetermined data stream originally and divided into groups, in the regulation zone in this grouping, at least deposit frequency reducing sampling sign (Down-sampling Flag), frequency reducing mixing sign (Down-mix Flag) or non-quantification sign (De-quantize Flag), divide into groups with the form of regulation agreement.

10), as the signal conditioning package that claim 9 is put down in writing, it is characterized in that comprising: according to the transmission requests that the signal conditioning package from other proposes, the data (Down-sampled and De-quantized Data) of transmission frequency reducing sampling and non-quantification.

11), a kind of signal processing apparatus, it is characterized in that having: when comprising data that audio pack forms specified data stream originally and divide into groups, regulation zone in this grouping is deposited frequency reducing sampling sign (Down-sampling Flag), frequency reducing mixing sign (Down-mixFlag) or non-quantification sign (De-quantize Flag) at least, receive the above-mentioned sign that form divided into groups of agreement in accordance with regulations, the device of decoding.

12), a kind of transmission method, it is characterized in that: comprise audio pack formation specified data stream originally, when converting the grouping corresponding to the serial line interface of regulatory specifications to, in the regulation zone in this grouping, at least deposit frequency reducing sampling sign, frequency reducing mixing sign or non-quantification sign, convert the grouping corresponding to the serial line interface of regulatory specifications to, the serial line interface by the afore mentioned rules specification transmits.

13), as the transmission method that claim 12 is put down in writing, it is characterized in that: according to the transmission requests that the signal conditioning package from other proposes, the data of transmission frequency reducing sampling and non-quantification.

14), a kind of transmission medium, it is characterized in that: comprise audio pack originally and form specified data stream, in the regulation zone in grouping, at least deposit frequency reducing sampling sign, frequency reducing mixing sign or non-quantification sign, convert grouping to, be transferred to receiving end from transmitting terminal corresponding to the serial line interface of regulatory specifications.

15), a kind of signal processing apparatus, it is characterized in that: when the data that will comprise audio pack formation predetermined data stream are originally divided into groups, in the regulation zone that the inside of the real data in this grouping is provided with, deposit the identifying information of stored audio data coding mode in the above-mentioned bag of expression, have the block processing device that the form of agreement in accordance with regulations divides into groups simultaneously.

16), a kind of signal processing apparatus, it is characterized in that: when the data that will comprise audio pack formation specified data stream are originally divided into groups, deposit the identifying information of stored audio data coding mode in the above-mentioned bag of expression, have simultaneously and receive the data that the form of agreement in accordance with regulations divides into groups, transmits, the device that above-mentioned information is decoded at least.

17), a kind of transmission method, it is characterized in that: comprise audio pack formation predetermined data stream originally, when converting the grouping corresponding to the serial line interface of regulatory specifications to, in the set regulation zone, the inside of real data in this grouping, stored table is shown in the identifying information of stored audio data coding mode in the above-mentioned bag, convert the grouping corresponding to the serial line interface of regulatory specifications to, the serial line interface by the afore mentioned rules specification transmits.

18), a kind of transmission medium, it is characterized in that: in comprising audio pack formation predetermined data stream originally, in the set zone, real data inside in grouping, stored table is shown in the identifying information of the coded system of stored voice data in the above-mentioned bag, convert grouping to, be transferred to receiving end from transmitting terminal corresponding to the serial line interface of regulatory specifications.

Description of drawings

With reference to the accompanying drawings most preferred embodiment of the present invention is described.These accompanying drawings are:

Fig. 1 is the block scheme of the 1st embodiment of expression transmission method of the present invention, signal processing apparatus (transmitting device, receiving trap).

Fig. 2 is the process flow diagram that the disc player of presentation graphs 1 is handled.

Fig. 3 is the transmission method of expression the 2nd embodiment, the block scheme of signal processing apparatus (transmitting device, receiving trap).

Fig. 4 is the process flow diagram that the disc player of presentation graphs 3 is handled.

Fig. 5 is the process flow diagram of the receiving trap of presentation graphs 1, Fig. 3.

Fig. 6 is the detail flowchart of Fig. 5.

Fig. 7 is the figure of explanation in the Synchronous Transfer Mode of IEEE1394 specification.

Fig. 8 is the data structure by the A bag of the voice data of DVD audio frequency specification.

Fig. 9 is the data structure by the data of DVD video specification.

Figure 10 is the data structure by the RTI bag of DVD audio frequency specification.

Figure 11 is the data structure by the SPCT bag of DVD audio frequency specification.

The details drawing of data ordering when Figure 12 is transmission.

Figure 13 is a stored information details drawing in the interior management information areas of the header of real data.

Figure 14 is the array format figure in the expression real data.

Figure 15 is the figure of expression sound channel sign indicating number.

Figure 16 is the details drawing in the real data.

Figure 17 is another embodiment of channel information.

Figure 18 is the example of channel allocation.

Figure 19 is corresponding to another embodiment in the real data of Figure 14.

Figure 20 is the more detailed block diagram of the player 100 of Fig. 1.

Figure 21 is another embodiment of device for reproducing recorded.

Figure 22 is the process flow diagram of another working method of presentation graphs 1.

Workflow diagram when Figure 23 is the information of depositing corresponding to Figure 17.

Figure 24 is obtaining frequency reducing sampling sign, and workflow diagram during frequency reducing mixing sign.

Figure 25 is obtaining zero flag, and the workflow diagram in quiet when sign.

Figure 26 is corresponding to the figure of Figure 20 when arranging the data of 1 coded system.

When Figure 27 is 1 coded system corresponding to the figure of Fig. 6.

Figure 28 is the block scheme of the player of DVD audio frequency mode and 1 coded system dual-purpose type.

Figure 29 is the device for reproducing recorded block scheme corresponding to the receiving end of Figure 22 of DVD audio frequency mode and 1 coded system dual-purpose type.

Figure 30 is the process flow diagram of decoding processing of the signal of 1 coded system of expression among Figure 29.

Embodiment

Fig. 1 is the block scheme of the 1st embodiment of relevant signal processing apparatus of this embodiment of expression and transmission method, and Fig. 2 is the block scheme that the disc player of presentation graphs 1 is handled.

In the example of Fig. 1, take on the disc player 100 of dispensing device at family internal information network center and the device for reproducing recorded 200 of a receiver terminal device and have data transmission interface (I/F) 200a, 200b respectively, data transmission interface 200a, 200b connect by serial line interface 188-1, the 188-2 of IEEE1394 specification.Disc player 100 is for example read at the sound signal A and the rest image signal SPCT of DVD audio frequency disc recording, sends it to device for reproducing recorded 200 by data transmission interface 200a, serial line interface 188-1,188-2.Device for reproducing recorded 200 receives, resets this sound signal and rest image signal SPCT by serial line interface 188-1,188-2, data transmission interface 200b.At this moment, a serial line interface 188-1 selects to be used for receiving or sending, and another serial line interface 188-2 is exclusively used in transmission.

Action below with reference to the disc player 100 of Fig. 2 key diagram 1.At first data transmission interface 200a and a serial line interface 188-1 are set at receive mode (step S1), then by data transmission interface 200a, 2 serial line interface 188-1,188-2 and device for reproducing recorded between carry out transmitted in both directions (step S2).

Then, a serial line interface 188-1 is set at send mode (step S3) from receive mode, then by 2 serial line interface 188-1,188-2, with transfer rate than higher signals disperse after, send to replay device 200 (step S4).That is, in this embodiment, another serial line interface 188-2 always is set at send mode.

The object lesson that sends data is: because in the DVD audio disc, except sound signal A, also record real-time information signal RTI (for example text data) and rest image signal SPCT, so can consider to adopt sound signal A by serial line interface 188-1 transmission, and real-time information signal RTI and rest image signal SPCT are by the method for serial line interface 188-2 transmission.Like this, by disperseing, as the former sound signal A with when the latter's real-time information signal RTI and rest image signal SPCT synchronized playback owing to can avoid the restriction of buffer capacity, so can several rest images of synchronized playback, for example from 88 width of cloth to 99 width of cloth.In addition, be the operation of the appointment (request), play command etc. of dish to be indicated another being set at the example of specifically communicating by letter on the step S1 of receive mode from the playback terminal.

In addition, serial line interface also can be not limited to 2, for example adopts 4 serial line interface 188-1～188-4 (and data transmission interface 200a, 200b) as shown in Figure 3, Figure 4.That is, at first be set at receive mode (step S11) with one among serial line interface 188-1～188-4, then by 2 serial line interface 188-1,188-2 and device for reproducing recorded 200 between carry out transmitted in both directions (step S12).Interface 188-1 with above-mentioned receive mode is set at bidirectional mode (step S13) then, then make transfer rate than higher signals disperse by 3 interface 188-2～188-4 after, be transferred to device for reproducing recorded 200 (step S14).

That is, at this moment for example also 1 serial line interface 188-1 can be selected to be used for receiving or sending, and other 3 serial line interface 188-2～188-4 are exclusively used in transmission.At this moment for example can consider to adopt sound signal A, real-time information signal RTI and rest image SPCT respectively by 3 serial line interface 188-2～188-4 transmission, and the method that the data relevant with the operation of playback terminal are transmitted mutually by 1 serial line interface 188-1.

In the present embodiment, the form that also goes for the audio frequency correspondence of IEC958 specification replaces the transmission mode of IEEE1394.

The such twocouese transmission mode of IEC958 specification and the IEEE1394 specification of present embodiment is different, and is unidirectional transmission mode, as present embodiment, is suitable for easily and adopts a plurality of serial line interfaces to carry out the situation of transmitted in both directions.

Corresponding to the form of the audio frequency of above-mentioned IEC958 specification also can be audio format corresponding to the IEC958 mode in the IEEE1394 specification, also can be adapted to the variety of way of IEEE1394 specification.

Utilize Fig. 5 below, to stored charging sign in the data field of following Figure 12, zero flag, quiet sign, bag sign, copy flag and duplicate supplementary (frequency reducing sampling sign Fa, frequency reducing mixing sign Fb, non-quantification sign Fc, number of copy times) and describe.At first, whether be the sign of the free of losses mode of DVD audio frequency from transmitting terminal to the compress mode that receiving end sends about data.For example, this sign is a stored sign in data field management information as shown in figure 13.When if this lossless manner can not be decoded, can end to receive.In addition, receive simultaneously, carry out it and reply, check whether receiving end has the qualification of duplicating, and starts when satisfying this inspection condition from the verify data of transmitting terminal to the receiving end transmission.Accept copy flag and be illustrated in the supplementary that transmitting terminal is handled content, if when promptly making sampling frequency Fs be converted to the processing of half, then frequency reducing mixing sign Fb is set to " 1 ", if and carry out non-ly from original position (for example 20) being quantified as 16 when handling, then non-quantification sign Fc is set to " 1 ", and receives the supplementary of duplicating that number of copy times is set.In addition, the charging sign of " charge ", " freely " is represented in inspection respectively according to the kind difference of content, when being " charge ", according to number of copy times information decision toll amount, the accounting management (step S21) of chargeing the stored value card that carries out in installing, being provided with.

Then, when several the use and data during for " 0 " arranged in most serial line interfaces, owing to from transmitting terminal receiving end is sent zero flag by serial line interface, so will check this sign (step S22) at receiving end, if Y, then do not receive processing (step S23), in addition, when send sound signal A data in addition by a certain serial line interface, for example when rest image signal SPCT and real-time information RTI, in order can not produce noise, and from transmitting terminal receiving end is sent static sign at receiving end, check this sign (step S24) at receiving end by this serial line interface because of the D/A converter that sound signal is used.If Y then carries out quiet processing (step S25).

In addition, when sending sound signal A, rest image signal SPCT, real-time information RTI, vision signal V by a certain serial line interface, at receiving end for it is decoded immediately, make it to be easy to synchronously, and from transmitting terminal receiving end is sent the signal class formative by this serial line interface, check that at receiving end this sign receives (step S26),, then finish if finish (step S27 is Y).At transmitting terminal, make number of copy times information increase counting according to the end of duplicating.

The object lesson of expression step S26 in Fig. 6.Promptly, check whether the signal class formative is sound signal (the A bag of DVD audio disc) (step S31), if Y, then supply with A bag impact damper (step S32), check whether the bag sign is vision signal (video packets of DVD audio disc) (step S33), if Y, then supply with V bag impact damper (step S34), check whether the bag sign is RTI signal (the RTI bag of DVD video disc) (step S35), if Y, then supply with RTI bag impact damper (step S36), check whether the bag sign is SPCT signal (the SPCT bag of DVD audio disc) (step S37), if Y then supplies with SPCT bag impact damper (step S38), if other (management datas) then supply with decoder buffer (step S39).

In addition, above-mentioned ID, management information and flag information leave in the data of following MPEG agreement, transmit.

Fig. 7 is that Fig. 7 a represents transport stream for the figure of the Synchronous Transfer Mode that the IEEE1394 specification of carrying out this transmission is described.Transport stream is the fixedly grouping of 180 bytes, be herein arrange be by the voice data of DVD specification bit string (A bag), and press the view data and the voice data (V bags) such as (A of video wrap) of DVD specification, the bit string of perhaps pressing the voice data of SACD specification (supersonic frequency (s.f.) (Super Audio) CD specification).

In Fig. 8 to Figure 11, be illustrated in above-mentioned A bag, V bag, the RTI bag of arranging, the data structure that reaches the SPCT bag herein.At the A of the linear PCM shown in Fig. 8 (A) bag is what to write down in the data area of DVD audio disc.

The A bag of this PCM is by constituting below 2048 bytes, and its content is made of the packet head and the A grouping of 14 bytes.A grouping is by packet header (Packet header) proprietary header (Private header) of 17,9 or 14 bytes, constitute with the voice data of 1 to 2011 byte.

Proprietary header is by constituting with the lower part:

8 seats stream ID,

3 reserve areas in UPC, EAN, the ISRC,

5 UPC/EAN/ISRC sequence numbers in UPC, EAN, the ISRC,

8 UPC/EAN/ISRC data in UPC, EAN, the ISRC,

8 proprietary header length,

16 the 1st access unit pointers,

8 audio frequency of byte data messages (ADI), and

0-7 byte byte of padding.

ADI (voice data information portion) is by forming with the lower part:

1 audio frequency emphasize sign,

1 reserve area,

1 stereophonic reproduction mode,

1 potential drop mixing frequently sign indicating number validity,

4 potential drops mixing frequently sign indicating number,

The quantification word length " 1 " of 4 group " 1 ",

The quantification word length " 2 " of 4 group " 2 ",

The audio sample frequency f s1 of 4 group " 1 ",

The audio sample frequency f s2 of 4 group " 2 ",

4 reserve areas

4 multichannel types,

The displacement of 3 group " 2 ",

5 channel allocation information.

8 dynamic range control information, and

16 reserve areas.

In addition, the structure of the A bag of (compression) PCM of the packing of Fig. 8 (B) expression free of losses compression, this bag is by constituting below 2048 bytes, and its content is made of the packet header and the A grouping of 14 bytes.A grouping by the packet header of 17,22,9,14 or 19 bytes, proprietary header, and the compressed voice data of 1 to 2015 byte constitute.

Proprietary header is by constituting with the lower part:

8 seats stream ID,

3 reserve areas in UPC, EAN, the ISRC,

5 UPC/EAN/ISRC sequence numbers in UPC, EAN, the ISRC,

8 UPC/EAN/ISRC data in UPC, EAN, the ISRC,

8 proprietary header length,

16 the 1st access unit pointers,

The voice data information (ADI) of 4 bytes,

The byte of padding of 0-7 byte.

ADI (voice data information) is by constituting with the lower part

8 the place aheads retrieval pointer,

8 rears retrieval pointer,

16 reserve areas.

V bag shown in Fig. 9 is recorded in the data area of DVD audio frequency or DVD video disc.

This V bag is by constituting below 2048 bytes, and its content is made of the packet head and the user data packets of 18 bytes.Packet head by the MUX speed (multipath transmission speed) of the SCR that unwraps beginning, 6 bytes of 4 bytes, 3 bytes, and the filling of 1 byte constitute.

RTI bag shown in Figure 10 is recorded in the data area of DVD audio disc.

This RTI bag is by constituting below 2048 bytes, and its content is made of the packet head and the RTI grouping of 14 bytes.The RTI grouping is made of packet header, RTI proprietary header, 1 to the 2015 byte RTI data of 17,9 or 14 bytes.

The RTI proprietary header is by constituting with the lower part:

8 seats stream ID,

2 byte reserve areas,

8 proprietary header length,

4 reserve areas, and

4 RTI Information IDs,

0-7 byte byte of padding.

Be recorded in the data area of DVD audio disc at the bag of the SPCT shown in Figure 11.

This SPCT bag is by constituting below 2048 bytes, and its content is made of the packet head and the SPCT grouping of 14 bytes.SPCT grouping by the packet header of 22,19 or 9 bytes, and 1 to 2025 byte SPCT data constitute.

In addition, the fixedly grouping that is made of above-mentioned 188 bytes in Fig. 7 is added with the time stamp [Fig. 7 (b)] that is called the source packet header in its front portion.At receiving end, contrast the moment of this time stamp, playback sound and dynamic menu.

And these data are divided into a plurality of data blocks [Fig. 7 (c)] of 48 bytes respectively.Its dividing method has 192 bytes * 1 piece, 96 bytes * 2 piece, 48 bytes * 4 piece, 24 bytes * 8 pieces four kinds.

Then, gather a plurality of data blocks, make a synchronous transmission grouping.This method of summary be with 125 μ s as 1 cycle, the piece in per 1 cycle to income quantity gathers successively, adds the packet header that IEEE1394 described later uses in the front portion of this piece.Represented in Fig. 7 (d) respectively to be divided into that 48 byte datas gather is 3 and 2 state.

And when carrying out this data transmission, as shown in figure 12, forwardly add judgement, then arrange the cycle start packet, then this cycle start packet is that the grouping of repeated arrangement 125 μ s on each predetermined distance is transmitted.

The grouping of these each 125 μ s by packet header, data field, and 32 data error detection sign indicating number constitute.

Packet header is by constituting with the lower part:

16 bit data length informations,

2 bit representations have or not CIP described later (the public synchronized packets of Common Isochronous Packet) header sign,

The channel allocation information of 6 transmission groupings,

The transaction code of 4 bit representation transaction codes (Transaction Code),

4 bit synchronization sign indicating numbers, and

32 packet header error-detecting codes.

Data field is made of the afterbody of the header of 32 CIP header, 32 real data, real data and 32 s' real data.

The formation of 8 ID comprises:

The sum of 4 bit serial interface, and

The sequence number of 4 bit serial interface.

The formation of 16 application messages comprises:

4 bag signs,

1 zero flag,

1 quiet sign,

8 chargings indicate, reach

2 copy flag.

8 formations of duplicating supplementary comprise:

1 potential drop take a sample frequently the sign Fa,

1 potential drop mixing frequently sign Fb,

1 non-quantification sign Fc, and

5 number of copy times.

Management information in the mantissa of real data as shown in figure 13, record in order be equivalent to 1 byte (8) from address 00h to address FFh the information (16) of (256 kinds), and its repetition is constituted.The ID (8) in this address 00h to FFh is recorded in the afterbody of real data.

That is, formation comprises:

00h--07h：ISRC、

The 08h--0Bh:UPC/EAN/JAN sign indicating number,

0Ch:SDCM (replication management information),

0Dh--2Fh: the encryption satellite information,

30h--3Fh: between the permission operating period,

40h: content ID,

41h--46h: during the copyright protection,

47h--4Ah: the information relevant with player,

4Bh--72h: text data,

73h--7Fh: user ID,

80h:DVD audio frequency free of losses compression sign (the PCM sign of packing),

81h--BFh: reserve area,

C0h--C7h: the disk management data,

C8h--CEh: the master tape management data,

CFh--FFh: the essential information of Software Production.

Like this, can deposit most information of 256 addresses with 16 zone.

In addition, stored multichannel data AM824 data constitute by 32 as shown in figure 14 in real data, and its formation comprises: (24,20 or 16 of anterior identifiers (011), sound channel sign indicating number (5), pcm audio, but in the time of 20 or 16, LSB one side zero filling).

The regulation of sound channel sign indicating number as shown in figure 15

0h:Lf, multichannel left front

1h:Rf, multichannel right front

2h:S, multichannel around

3h:Ls, the left side of multichannel around

4h:Rs, the right side of multichannel around

5h:C, the center of multichannel

The low-frequency effect of 6h:LFE multichannel

7-1Fh: keep.

Figure 16 is the example by the concrete real data of afore mentioned rules.

In addition, above-mentioned sound channel sign indicating number information also can not put into above-mentioned real data, and as shown in figure 17,16 information is put into the ID and the spare area of the afterbody of above-mentioned Figure 12.

These 16 information also can be made of following part:

The sampling frequency FS2 (4) of group,

The information [frequency and figure place (4)] of expression multichannel type,

The expression multichannel distribute (Assignment) information (5), and

1 reservation, 1 potential drop take a sample frequently sign, and 1 non-quantification sign information portion of totally 3.

Figure 17 is the variant embodiment of Figure 13, and channel allocation is an example of channel information.

Figure 18 is the detailed content represented according to this channel allocation.

The group " 1 " from 1 sound channel (monophony) to 6 sound channels, the channel allocation information of " 2 " have been the figure shows.Each symbolic representation of Lf among this figure, Rf, S, Ls...... and same each the corresponding sound channel of above-mentioned Figure 15, L, R represent stereophony.

At this moment, the multichannel data in the above-mentioned real data, for example by arrangement shown in Figure 19, each sound channel is determined according to the channel allocation of above-mentioned Figure 17 and the sound channel order (ACH0-ACH5) of Figure 18.That is, deposit bit flag with 5 of the CH sign indicating numbers that replace above-mentioned Figure 14.2 conduct positions of the high position of bit flag information, for example be expressed as: (00:24 position), (01:20 position), (10:16 position), (11: other positions), for example take a sample by the no frequency reducing of (010) expression as the frequency reducing sample intelligence for 2 of the low levels of bit flag, and (011) expression has the frequency reducing sampling.The frequency reducing sampling for example is meant and changes to 1/2nd of the sample period.

The specific embodiment of Figure 20 indicating panel player 100, expression can the playback of DVD audio disc and the universal playing machine of DVD video disc etc.The universal playing machine is according to the operation of the control of control part 14 and operating portion 15, telepilot 16, and recorded data is reset by drive unit 2 on the dish 1 of DVD audio disc, DVD video disc, DVD-RAM dish etc., by demodulator circuit 2B demodulation.From video (V) bag of DVD audio disc and the playback of DVD video disc and the rest image bag of resetting from the DVD audio disc.Carry out the DVD decoding by rest image/V packet decoder 3, be converted to video flowing.

When the output terminal of using by the monitor shown in Fig. 1 55, externally show on the display (not shown), or when taking out as audio frequency output, this video flowing by elongation/image transitions portion 4 extend, deciphering etc., then by D/A converter section 5, the V bag is as vision signal/subimage signal/audio signal output, and rest image SPCT bag is exported as vision signal.On the other hand, two kinds of methods are arranged when being transferred to device for reproducing recorded 200 shown in Fig. 1, the 1st kind of method is to be passed through data ordering portion 6 by elongation/image transitions portion 4 by the data of elongation, deciphering etc., carry out data ordering by packet mode, then, be transferred to device for reproducing recorded 200 by the serial line interface of 2 data transmission interface 7-1,7-2 and IEEE1394 or IEC958.The 2nd kind of method is by the decode serial line interface of unencrypted video flowing by data transmission interface 7-1,7-2 and IEEE1394 or IEC958 of (opening bag) of rest image/V packet decoder 3, is transferred to device for reproducing recorded 200.

In addition, by A bag/RTI packet decoder 8, audio A bag and the RTI bag reset from DVD audio disc, DVD-RAM dish carry out the DVD decoding, convert thereof into the DVD audio stream.In addition, convert thereof into Word message/real-time text information RTI again by shows signal generating unit 11.

The output terminal 55 of sound signal by Fig. 1 taken out, when supplying with external loudspeaker (not drawing among the figure), this audio stream carries out PCM conversion, deciphering (De-scramble) etc. by PCM conversion/Audio Signal Processing portion, converts the PCM signal to, then by 10 outputs of D/A converter section.In addition, when making RTI externally display (not drawing among the figure) showing, supply with output signals by shows signal generating unit 18.On the other hand, when the device for reproducing recorded 200 to Fig. 1 transmits, 2 kinds of methods are arranged during also with video equally, the 1st kind of method is to carry out the PCM conversion by PCM conversion/Audio Signal Processing portion 9, the PCM data of deciphering etc., reduce the change sampling frequency by frequency reducing sampling portion 10 as required, be mixed down two channel stereo signal by the frequency reducing when the multi-channel signal of frequency reducing mixing portion 11 as required, carry out data ordering by data ordering portion 12, then by 2 data transmission interface 13-1, the serial line interface of 13-2 and IEEE1394 or IEC958 is transferred to device for reproducing recorded 200.

The 2nd kind of method is to decode by A bag/RTI packet decoder 8, and unencrypted DVD audio stream passes through data transmission interface 13-1,13-2, reaches the serial line interface of IEEE1394 or IEC958, is transferred to device for reproducing recorded 200.

Figure 21 is another example as the device for reproducing recorded 200 of receiving trap, represent as the device that the data of being transmitted by the universal playing machine 100 shown in Figure 20 are reset, and by the data of universal playing machine 100 by the interface transmission, receive by data transmission interface 21-1,21-2.Data transmission interface 21-1,21-2 be according to the header flag of being transmitted by universal playing machine 100, distribute to by control part 32 DVD demoder 22 impact damper 22V, A bag playback portion 23 impact damper 23V, V bag playback portion 24 impact damper 24V, RTI bag playback portion 25 impact damper 25V, and the impact damper 26V of SPCT bag playback portion 26 in one.

That is,, when identification is the A bag, distribute to the impact damper 23V of A bag playback portion 23 when 4 bag signs of 32 application messages of header by above-mentioned real data shown in Figure 12; When identification is the V bag, distribute to the impact damper 24V of V bag playback portion 24; When identification is the RTI bag, distribute to the impact damper 25V of RTI bag playback portion 25; When identification is the SPCT bag, distribute to the impact damper 26V of SPCT bag playback portion 26.If when not adding the bag sign, then supply with the impact damper 22V of DVD demoder 22.Operating portion 33 is manipulated for playing etc.In addition, by the content ID that is write down among the address 40h in the real data shown in Figure 13,, carry out accounting processing to content recognition.

In addition, the user ID that is write down in the 73h-7Fh of address is only used when supplying with the specific user, uses for checking the user.

When stored data among the above-mentioned impact damper 23V are indications by the user when forming playback mode, checks that the PCM (compression) of above-mentioned packing indicates, when being added with when indicating, extend processing.Thereby after the whole data of this sign inspection, needn't extend processing, need only checkmark in advance, so not only can improve playback efficient but also can reduce buffer capacity.

In addition, as mentioned above,, in control part 32, can end the reception of data when this device is in the time of can not extending the device of processing.

When by bag ID, received audio signal A, rest image signal SPCT, real-time information RTI are set in 32 on the header of real data, and during vision signal V, can be at receiving end immediately with its decoding, so needn't for example can relax for the restriction that obtains in advance a large amount of rest image signals being taken in the rest image impact damper synchronously of rest image SPCT and sound A, make the rest image synchronized playback that is subjected to existing buffer capacity restriction.In addition, reset because video dynamic image V (band sound) and audio A can be taken out simultaneously simultaneously, thereby can remove the playback limit that to reset respectively.

In addition, also with reference to zero flag, quiet sign, charging sign and charge information (allowing between the operating period).Charging sign and charge information are handled by accounting management portion 34 with content ID, at this moment do not use replication management information SDCM.

In above-mentioned Figure 21, can utilize the process flow diagram of Figure 22 to describe in detail for the action in the A bag playback portion 23, in this A bag playback portion 23, check in the front portion of input data and whether added " 011 " (step S40) in 3, if for being (Y), then these data forward following step to as the pcm audio data, if for denying (N), then this handling procedure carries out end process (step S52), as other channel audio data processing.

When the multichannel audio data, on step S41, check CH (sound channel) sign indicating number, check each CH sign indicating number at step S42, S44, S46, S48, S50 respectively, the sound channel that has or not Lf, Rf, Ls, Rs, C, the data of each detected sound channel are respectively by corresponding latch cicuit 23a in the A bag playback portion 23, ... latch (step S43, S45, S47, S49, S51), obtain the output of synchronous back.

In addition, as above-mentioned shown in Figure 17, when the frequency information that adds corresponding to each sound channel, refer again to frequency reducing sample intelligence shown in Figure 19, as shown in figure 23, at the frequency information of step S61 inspection corresponding to each sound channel, step S80-84 is the frequency of setting respectively corresponding to each sound channel.That is, on the above-mentioned steps S80-84, according to the frequency reducing sample intelligence, when frequency reducing was taken a sample, Fs was set at half with this sampling frequency.

For other action, simultaneously with reference to Figure 24, Figure 25, and Fig. 1, Figure 20 describe.The at first action of the disc player 100 of key diagram 1.Data transmission interface 200a and a serial line interface 188-1 are set at receive mode (step S41), inspection has or not transmission requests (step S42) from device for reproducing recorded 200, if have, then receive this transmission requests (step S43), as described below, be set at frequency reducing sampling and non-quantification treatment (step S44), when being multichannel, then be set at the processing (step S45,46) of frequency reducing mixing in order to carry out the frequency reducing mixing.

Then by data transmission interface 200a, 2 serial line interface 188-1,188-2, and pen recorder 200 as receiving trap between carry out transmitted in both directions (step S47).

Then a serial line interface 188-1 is set at send mode (step S48) from receive mode, by 2 serial line interface 188-1,188-2 transfer rate being sent to replay device after than higher signals disperse then is pen recorder 200 (step S49).That is, another serial line interface 188-2 always is set in send mode in this embodiment.

The object lesson of send mode is, because in the DVD audio disc, except sound signal A, also record real-time information signal RTI (for example text data) and rest image signal SPCT, so can adopt by serial line interface 188-1 transmitting audio signal A, by the method for serial line interface 188-2 transmission real-time information signal RTI and rest image signal SPCT.Like this, by disperse can the former sound signal A of high-speed transfer and the latter's real-time information signal RTI.

In that a side is set at the example of specifically communicating by letter among the step S1 of receive mode be: coil and the transmission of the appointment (request) of song and play command etc. is supplied with and indicated from the end of resetting.

As shown in figure 20, the processing of frequency reducing sampling is undertaken by frequency reducing sampling portion 10, and the processing of non-quantification is undertaken by PCM conversion/Audio Signal Processing portion 9.

In addition, the processing of frequency reducing mixing is undertaken by frequency reducing mixing portion 11.

Utilize copy flag in Figure 25 declare record replay device 200 below, duplicate supplementary (frequency reducing sampling sign Fa, frequency reducing mixing sign Fb, non-quantification sign FC, number of copy times), charging sign, zero flag, quiet sign, and bag sign.In addition, frequency reducing mixing sign and non-quantification sign also can be from as obtaining in the data shown in Figure 17 that above-mentioned another embodiment enumerated.

At first, data delivery interface 200b and a serial connection mouthful 188-1 of Fig. 1 are set at send mode (step S51), disc player 100 is carried out transmission requests (step S52), then a serial line interface 188-1 is set to receive mode (step S53) from send mode, then receives (step S54) by 2 serial line interface 188-1,188-2.Then, the verify data that receiving end sends is replied, check whether receiving end has the qualification of duplicating, and starts when satisfying this inspection condition from transmitting terminal.Receive copy flag and the expression advance content is handled on transmitting terminal duplicates supplementary, that is to say, if when having carried out the processing of frequency reducing sampling, then frequency reducing mixing sign Fb is set to " 1 ", if from original position " for example 20) carried out non-quantification treatment at 16; and then non-quantification zone bit Fc is set to " 1 ", also receives the supplementary of duplicating that is provided with number of copy times in addition.Also to check the charging sign of representing " charge ", " freely " according to content type, when being " charge ",, carry out the accounting management (step S55) of chargeing from stored value card according to number of copy times information decision toll amount.

Then, several when not using when in a plurality of serial line interfaces, having, and data are when being " 0 ", owing to from transmitting terminal receiving end is sent zero flag by this serial line interface, so check this sign (step S56) at receiving end, if Y, then do not receive processing (step S57), in addition, when send sound signal A data in addition by certain serial line interface, for example when rest image signal SPCT and real-time information RTI, do not produce noise for making because of the D/A converter that sound signal is used at receiving end, from transmitting terminal receiving end is sent quiet sign by this serial line interface, check this sign (step S58) at receiving end, if Y then carries out quiet processing (step S59).

In addition, when sending sound signal A, rest image signal SPCT, real-time information RTI, vision signal V by certain serial line interface, for at receiving end immediately to its decoding, obtain synchronously easily, then from transmitting terminal receiving end is sent the signal class formative by this serial line interface, check that at receiving end this sign receives (step S60), then finish if finish (step S61 goes up and is Y).Make number of copy times information increase counting at transmitting terminal by the end of duplicating.

The object lesson of step S60 is identical with the step shown in above-mentioned Fig. 6, promptly, check whether the bag sign is sound signal (the A bag of DVD audio disc) (step S31), if Y, then supply with A bag impact damper (step S32), check whether the bag sign is vision signal (video packets of DVD audio disc) (step S33), if Y, then supply with V bag impact damper (step S34), check whether the bag sign is RTI signal (the RTI bag of DVD audio disc) (step S35), if Y, then supply with RTI bag impact damper (step S36), check whether the bag sign is SPCT signal (the SPCT bag of DVD audio disc) (step S37), if Y, then supply with SPCT bag impact damper (step S38), if other then supply decoder buffer (step S39).

In the above-described embodiment, be to describe to hypothesis according to the handled signal Processing of DVD audio frequency specification, the compatible device to can reset this coded system and 1 DSD coded system describes below.

For example, when 1 DSD coded system, this data structure also can be SACD (supersonic frequency (s.f.) CD), and this data structure is identical substantially with above-mentioned structure shown in Figure 8 herein, below to existing the situation of DSD coded data to describe in the voice data zone.When transmission, in the real data of Figure 12, for example arrange by shown in Figure 26.

Promptly by constituting with the lower part:

Anterior identifier 3 (111: represent 1 DSD coded system),

Be illustrated in the coding that whether has added coding in this coding have 1 of no marks,

4 of sound channel and figure place signs (high-order 2 as channel information, for example be expressed as " 00:2CH ",

" 01:3CH ", " 10:6CH ", " 11: other sound channels ", 2 of low levels for example are expressed as " 00:24 position ", " 01:20 position ", " 10:16 position ", " 11: other positions " as figure place information), and

1 voice data.

Above-mentioned coding for example can adopt the free of losses of Huffman code to compress to represent.

In addition, the sign of at this moment representing above-mentioned 1 DSD coded system also can carry out new setting in the reserve area in the management information shown in Figure 13.

And.As playback action corresponding to above-mentioned Fig. 6, can illustrate according to process flow diagram shown in Figure 27, on step S31, when judging that the signal distinguishing mark is the A bag, on step S32, detect the sign whether 1 coded system is arranged, if Y then supplies with DSD impact damper (step S33), if when can't see sign, then supply with PCM impact damper (step S34).

In addition, the player as this coded system dish of resetting for example can provide the player shown in Figure 28.This player has the formation corresponding to above-mentioned Figure 20, be different particularly having DSD/PCM switching signal handling part 9 ' this point, according to the sign that has or not 1 above-mentioned DSD coded system, the DSD data or the PCM data of DSD conversion or PCM conversion etc. are carried out in output.

In addition, Figure 29 is the figure corresponding to above-mentioned Figure 21, particularly, at this moment pass through 4 bag signs of 32 application messages of header of above-mentioned real data as shown in figure 12, be identified as the A bag, and by the anterior identifier (111) shown in Figure 26, check whether be the data of 1 DSD coded system, supply with the impact damper 23V-2 that impact damper 23V-1 that the DSD of A bag playback portion 23 uses or PCM use successively, at playback time, portion 23 exports as PCM signal or DSD signal from PCM-DSD converter section 28a by the playback of A bag.

Particularly when judgement is the coded system of 1 DSD, shown in the process flow diagram of Figure 30, inspection has or not coding maker (step S150), when sometimes, on PCM-DSD converter section 28a, decoding processing (step S160) is carried out in the free of losses compression, supply with unillustrated D/A converter (step S170) among the figure.

In the embodiment of above explanation, be docking port be the interface that can multichannel connects, for make lot of data carry out transmission more at a high speed, the situation of formation that a plurality of interfaces are connected is illustrated, if but do not think high-speed transfer so during lot of data, but also can adopt the interface of the IEEE1394 specification of a transmitted in both directions.

In addition, disc player is not limited only to CD, also can be hard disk recording mediums such as (HDD).

In addition, device for reproducing recorded also can be a portable terminal.

The present invention can obtain following effect.

The the 1st to 4 aspect according to the present invention can obtain audio-frequency information is correctly carried out sound conduit tube The effect of reason and the correct multichannel of resetting etc.

Copyright protection is carried out easily at receiving terminal in the 9th to 14 aspect according to the present invention.

The the 15th to 18 aspect according to the present invention can obtain and can carry out corresponding to volume at receiving terminal The effect of the processing of coding mode.

Claims (3)

1. signal processing apparatus comprises:

Decoding device, be used for from comprise have by the regulation channel number of encoding by the numeralization mode of the free of losses compression that comprises DVD audio frequency specification constitute and carried out grouping multichannel channel allocation information voice data and form the data of regulation audio pack, the voice data of above-mentioned numeralization mode is decoded as the pcm audio signal; And,

The block processing device that the structure that is made of packet header and data area is divided into groups, be used in the data area in above-mentioned grouping, and in as the inner regulation zone that is provided with of the actual data area of the real data posting field beyond the public synchronized packets header, deposit the channel allocation information of above-mentioned multichannel, also deposit the information of the sampling frequency of the group of representing above-mentioned multichannel; In the data area in above-mentioned grouping and in regulation zone as the real data of the real data posting field beyond the public synchronized packets header, figure place identifying information and the frequency reducing sampling sign that to discern the actual number of bits of each sound channel of the pcm audio signal of above-mentioned decoded multichannel, as the place ahead of the identifier of above-mentioned pcm audio signal and above-mentioned pcm audio signal in abutting connection with setting, simultaneously with the sound channel of above-mentioned pcm audio signal with the afore mentioned rules channel number in abutting connection with being provided with and storing; And the form of agreement divides into groups to above-mentioned pcm audio signal in accordance with regulations.

2. signal processing method comprises:

Decoding step, be used for from comprise have by the regulation channel number of encoding by the numeralization mode of the free of losses compression that comprises DVD audio frequency specification constitute and carried out grouping multichannel channel allocation information voice data and form the data of regulation audio pack, the voice data of above-mentioned numeralization mode is decoded as the pcm audio signal; And,

The packet transaction step that the structure that is made of packet header and data area is divided into groups, be used in the data area in above-mentioned grouping, and in as the inner regulation zone that is provided with of the actual data area of the real data posting field beyond the public synchronized packets header, deposit the channel allocation information of above-mentioned multichannel, also deposit the information of the sampling frequency of the group of representing above-mentioned multichannel; In the data area in above-mentioned grouping and in regulation zone as the real data of the real data posting field beyond the public synchronized packets header, figure place identifying information and the frequency reducing sampling sign that to discern the actual number of bits of each sound channel of the pcm audio signal of above-mentioned decoded multichannel, as the place ahead of the identifier of above-mentioned pcm audio signal and above-mentioned pcm audio signal in abutting connection with setting, simultaneously with the sound channel of above-mentioned pcm audio signal with the afore mentioned rules channel number in abutting connection with being provided with and storing; And the form of agreement divides into groups to above-mentioned pcm audio signal in accordance with regulations.

3. method of reseptance comprises:

Decoding step, be used for from comprise have by the regulation channel number of encoding by the numeralization mode of the free of losses compression that comprises DVD audio frequency specification constitute and carried out grouping multichannel channel allocation information voice data and form the data of regulation audio pack, the voice data of above-mentioned numeralization mode is decoded as the pcm audio signal;

The packet transaction step that the structure that is made of packet header and data area is divided into groups, be used in the data area in above-mentioned grouping, and in as the inner regulation zone that is provided with of the actual data area of the real data posting field beyond the public synchronized packets header, deposit the channel allocation information of above-mentioned multichannel, also deposit the information of the sampling frequency of the group of representing above-mentioned multichannel; In the data area in above-mentioned grouping and in regulation zone as the real data of the real data posting field beyond the public synchronized packets header, figure place identifying information and the frequency reducing sampling sign that to discern the actual number of bits of each sound channel of the pcm audio signal of above-mentioned decoded multichannel, as the place ahead of the identifier of above-mentioned pcm audio signal and above-mentioned pcm audio signal in abutting connection with setting, simultaneously with the sound channel of above-mentioned pcm audio signal with the afore mentioned rules channel number in abutting connection with being provided with and storing; And the form of agreement divides into groups to above-mentioned pcm audio signal in accordance with regulations;

Receiving step is used to receive the grouping of dividing into groups by above-mentioned packet transaction step; And,

The decoding step is used for the above-mentioned at least channel allocation information of the grouping of above-mentioned reception and the information of the above-mentioned sampling frequency of expression are decoded.

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