CN1118797C - Optical disk reproducing device - Google Patents
Optical disk reproducing device Download PDFInfo
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- CN1118797C CN1118797C CN 98102276 CN98102276A CN1118797C CN 1118797 C CN1118797 C CN 1118797C CN 98102276 CN98102276 CN 98102276 CN 98102276 A CN98102276 A CN 98102276A CN 1118797 C CN1118797 C CN 1118797C
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- 238000005070 sampling Methods 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- 101000969688 Homo sapiens Macrophage-expressed gene 1 protein Proteins 0.000 description 2
- 102100021285 Macrophage-expressed gene 1 protein Human genes 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
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- 230000000007 visual effect Effects 0.000 description 1
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Abstract
The invention provides a disc reproducing device to reproduce a disc such as a DVD(digital versatile disc) or a VCD (video CD) with the standards of an image data different from those of a CD- G(CD graphics) with an inexpensive structure. An MPEG/CD-G decoder 9 identifies a DVD or a CD-G based on a flag read out of a disc D and as for the DVD, a DVD decoding processing is executed while as for the CD-G, a CD-G decoding processing is executed. Another MEPEG/CD-G decoder identifies a DVD, a CD-G or a VCD based on a flag read out of the disc D. As for the DVD, a DVD decoding processing is executed, as for the CD-G, a CD-G decoding processing is executed and as for the VCD, a VCD decoding processing is executed.
Description
The present invention relates to a kind of disc reproducing apparatus, the DVD (digital universal disc) of CD-G of playback of recorded still frame (CD figure) and record moving frame etc.
As the device of playback CD-G, open in flat 8-322008 number the open communique spy of Jap.P. for example and to disclose.Figure 16 represents existing C D-G replay device, and the information that is recorded among the CD-G is read by drive assembly 90.In the information that is read by drive assembly 90, still image data is handled by graphic decoder 91 and signal processing part 92, and exports by video output terminal OUT-V; Voice data is handled by audio decoder 93 and D/A converter 94, and by the sub-OUT-A output of audio output.
Wherein, because DVD and CD-G have same size (diameter is 12cm), then consider to read the method for two kinds of dishes with common drive assembly 90.But, because the density of DVD is than CD-G height and thickness difference, and need the picking up system of bifocal mode, for example, the open communique spy of Jap.P. open flat 8-33955 number, spy open flat 8-339672 number disclosed like that.
But, because the visual specification of DVD is different with CD-G, the existence problem that need carry out demodulation and remove formative circuit replay data in addition then.And, there is the problem that needs other circuit in order to reset VCD (CD-Video).
In view of the above problems, first purpose of the present invention provides a kind of disc reproducing apparatus, can be with the reset dish of the different DVD of the specification of CD-G and pictorial data of the formation of cheapness.
Second purpose of the present invention provides a kind of disc reproducing apparatus, can be with the formation of cheapness the reset different DVD of the specification of CD-G and pictorial data, the dish of VCD.
In order to realize above-mentioned first purpose, disc reproducing apparatus of the present invention is provided with demoder, judges that according to the sign of being reset from dish this dish is CD-G or DVD, comes pictorial data is carried out CD-G decoding processing or DVD decoding processing.
That is,, provide a kind of disc reproducing apparatus, comprising according to the present invention:
First decoding device, judge that according to the sign of being reset from dish this dish is CD-G or DVD, under the situation of CD-G, go format to take out pictorial data the CD-G data stream, under the situation of DVD, go format to take out pictorial data to the DVD data stream;
Second decoding device, judge that according to the sign of resetting from above-mentioned dish this dish is CD-G or DVD, under the situation of CD-G, the pictorial data of being taken out by above-mentioned first decoding device is carried out the CD-G decoding processing, under the situation of DVD, the pictorial data of being taken out by above-mentioned first decoding device is carried out the DVD decoding processing.
In order to realize above-mentioned second purpose, the present invention is provided with demoder, judges that according to the sign of being reset from dish this dish is CD-G or DVD or VCD, comes pictorial data is carried out CD-G decoding processing or DVD decoding processing or VCD decoding processing.
That is,, provide a kind of disc reproducing apparatus, comprising according to the present invention:
First decoding device, judge that according to the sign of being reset from dish this dish is CD-G or DVD, under the situation of CD-G, go format to take out pictorial data to the CD-G data stream, under the situation of DVD, go format to take out pictorial data to the DVD data stream, under the situation of VCD, go format to take out pictorial data VCD stream;
Second decoding device, judge that according to the sign of resetting from above-mentioned dish this dish is CD-G or DVD or VCD, under the situation of CD-G, the pictorial data of being taken out by above-mentioned first decoding device is carried out the CD-G decoding processing, under the situation of DVD, the pictorial data of being taken out by above-mentioned first decoding device is carried out the DVD decoding processing, under the situation of VCD, the pictorial data of being taken out by above-mentioned first decoding device is carried out the VCD decoding processing.
These and other purpose, advantage and feature of the present invention will be in conjunction with the drawings to the description of embodiments of the invention and further specified.In these accompanying drawings:
Fig. 1 is the block scheme of an embodiment of expression disc reproducing apparatus involved in the present invention;
Fig. 2 is the block scheme of the MPEG/CD-G demoder of detailed presentation graphs 1;
Fig. 3 is the process flow diagram of processing overview of the MPEG/CD-G demoder of presentation graphs 2;
Fig. 4 is the process flow diagram of the DVD decoding processing of detailed presentation graphs 3;
Fig. 5 is the process flow diagram of DVD decoding processing of the video display processor of presentation graphs 2;
Fig. 6 is the DVD decoding processing process flow diagram of the audio signal output portion of presentation graphs 2;
Fig. 7 is the process flow diagram of the CD-G decoding processing of detailed presentation graphs 3;
Fig. 8 is the process flow diagram of CD-G decoding processing of the video display processor of presentation graphs 2;
Fig. 9 is the CD-G decoding processing process flow diagram of the audio signal output portion of presentation graphs 2;
Figure 10 is the block scheme of second embodiment of expression disc reproducing apparatus involved in the present invention;
Figure 11 is the process flow diagram of processing overview of the MPEG/CD-G demoder of expression Figure 10;
Figure 12 is the process flow diagram of VCD decoding processing of representing the MPEG/CD-G demoder of Figure 10 in detail;
Figure 13 is the process flow diagram of the VCD decoding processing of expression video display processor;
Figure 14 is the process flow diagram of the VCD decoding processing of expression audio signal output portion;
Figure 15 is the synoptic diagram of the form of expression CD-G and DVD and VCD;
Figure 16 is the block scheme of expression existing C D-G replay device.
Embodiments of the invention are described with reference to the accompanying drawings.Fig. 1 is the disc reproducing apparatus of expression playback of DVD and CD-G.The information that is recorded among the dish D of DVD and CD-G is read by the pick-up head 1 of bifocal mode, and this signal that reads imposes on CD-G/DVD demoder/servo control circuit 3 after amplifying by RF amplifier 2.3 couples of SP of CD-G/DVD demoder/servo control circuit (main shaft) control circuit 11 coils the Spin Control of motor and the focus control of pick-up head 1, and the EFM signal from RF amplifier 2 carried out demodulation, come selectively CD-G form and DVD form to be gone format.
Wherein, the form of CD-G is by being made of a plurality of audio frame Af like that shown in Figure 15 (a), and an audio frame Af is constituted by (SYNC) sign indicating number, subcode and voice data are regional synchronously, writes down still image data in subcode.
The form of DVD is made of a plurality of video object pieces (VOB), such by being constituted by a plurality of video component V, audio-frequency assembly A and the sub-pictures assembly SP of stem with navigation arrangement NV by shown in Figure 15 (c) of VOB.Pictorial data in the video component V is compressed by the mode with MPEG2.Owing in DVD, use the variable length transmission mode, speed adjustment shown in Figure 1 then is set with impact damper 37 in order to adjust speed.
In Fig. 1, the 2nd CPU 4 has and is used for the memory of data of being read from TOC (the Table Of Contents) zone of dish D with the temporary transient storage of predetermined sheet format, simultaneously, come CD-G/DVD demoder/servo control circuit 3 is controlled according to input information by taking out sub-code data from input instruction unit 5.Input instruction unit 5 has for example PLAY button, STOP button, FF button, RF button, DIGEST button, JUMP button etc., display part 20 display operation modes and device unusual etc.The audio signal processing circuit 15 that comprises D/A converter is transformed to simulating signal to the digital audio and video signals of being reset, and the processing of postemphasising.
Circuits System shown in dot-and-dash line is the signal system that each voice data of the still image data, DVD and the CD-G that reset to the pictorial data of the MPEG2 that resets from DVD, from CD-G is handled, and has a CPU 6, ROM 7, DRAM 8, MPEG/CD-G demoder 9, video processing circuit 10, NTSC/PAL scrambler 23, quartz oscillator 21,24,25.The one CPU 6 is by controlling the 2nd CPU 4 and MPEG/CD-G demoder 9 carries out the control of whole device.
MPEG/CD-G demoder 9 comprises that in advance storage is used for the ROM 7 of all programs of control device, is used to store the DRAM 8 of the still image data of the pictorial data of the MPEG2 that is imported from the data bus b1 of CD-G/DVD demoder/servo control circuit 3 by 8 and CD-G, in order to show a common picture compressed signal being restored is necessary pictorial data, and sound signal is decompressed.MPEG/CD-G demoder 9 is made of a chip.
Between a MPEG/CD-G demoder 9 and the CPU 6 by be used for transmission mode information and obtain the program in the demoder 9 treatment situation state 8 bit data bus b2, be used to transmit receiving with 7 bit data bus b3 of the control signal of controlling demoder 9, being used to obtain to be transfused to the 3 bit data bus b5 that 1 bit data bus b4, the audio status of input information of the serial data of demoder 9 use and being connected of data address information.
Come MPEG/CD-G demoder 9 is elaborated below with reference to Fig. 2.Demoder 9 roughly comprises risc processor 31, Huffman variable length encoder/decoder 32, FIFO storer 36 and 4 interfaces 33～35,38.Risc processor 31 not only carries out the control of Huffman variable length decoder 32 and interface 33～35,38, also carries out the calculating of the deciphering of MPEG2 sentence structure, two-dimentional IDCT, re-quantization, motion vector etc.
If docking port 33～35,38 describes, the data bus of host bus interface 33 by 20,20 address bus are connected with a CPU 6 with CD-G/DVD demoder 3 with 18 control bus, address/control signal input and output internal bus, simultaneously, come inputoutput data by FIFO storer 36, thus, carry out the input of the data stream compressed in the MPEG mode and still image data, voice data and to the setting of internal register.
Below with reference to Fig. 3～Fig. 9 the processing of resetting is described.At first, MPEG/CD-G demoder 9 judges that according to the sign of reading from dish D DVD still is CD-G (step S1, S2), under the situation of DVD, be chosen in the DVD decoding processing of representing in detail among Fig. 4～Fig. 6 (step S3, S6), on the other hand, under the situation of CD-G, be chosen in the CD-G decoding processing of representing in detail among Fig. 7～Fig. 9 (step S4, S7).Under all no situation, on display part 20, show " can not reset " (step S5).
In the DVD decoding processing, as Fig. 4 represents in detail, V assembly and A assembly (step S11) shown in identification Figure 15 (c), then, the data of V assembly are gone format, and offer video display processor 34 (step S12), the data of A assembly are gone format, and offer audio signal output portion 38 (step S13).Video display processor 34, as Fig. 5 represents in detail, form the pictorial data (step S14) of predetermined video format (for example 720 * 480 pixels) according to the user data that has carried out going formative V assembly, itself and voice signal are kept synchronously and export to video processing circuit 10 (step S15).This image forms 2 layers at least in overlapping mode.
In audio signal output portion 38, as Fig. 6 represents in detail, according to the user data that removes formative A assembly, be separated into for example 5 channels (step S16) of each channel of multichannel of being recorded among the DVD, offer D/A converter 15, be transformed to simulating signal (step S17) with the sampling frequency (for example 96kHz) that is recorded among the DVD, export synchronously with picture intelligence (step S18).
In the CD-G decoding processing, as Fig. 7 represents in detail, the data in the voice data zone among the frame Af shown in Figure 15 (a) are offered audio signal output portion 38 (step S21), then, if have the CD-G data among the frame Af, then it is offered video display processor 34 (step S22 → S23).
In audio signal output portion 38, as Fig. 9 represents in detail, sound signal is separated into 2 channels (step S26), offer D/A converter 15 respectively, be transformed to simulating signal (step S27) with the sampling frequency (for example 44.1kHz) that in CD-G, is write down, export synchronously with picture intelligence (step S28).Wherein, though CD-G is different with the sampling frequency of the sound signal of DVD, just can realize by the D/A converter 15 that 2 systems are set.Scheme as an alternative can be brought up to the sampling frequency of the sound signal of CD-G identically with DVD, just can be realized by the D/A converter 15 of 1 system, in the latter case, can be transformed to high-fidelity to the CD-G tonequality of resetting.
Figure 10 expresses the disc reproducing apparatus of playback of DVD and CD-G and VCD as second embodiment.Wherein, the form of VCD, shown in Figure 15 (b) like that, be that a plurality of videos sector V is inserted audio sector A and constitutes, an audio sector A is made of a plurality of audio frame Af.Pictorial data in the V of video sector is to compress in the MPEG1 mode.
CD-G/DVD/VCD demoder 3a among Figure 10 comes each form of CD-G, DVD, VCD is gone format according to the dish ID (sign) in each dish that is recorded in CD-G, DVD, VCD, and gives MPEG/CD-G demoder 9a.Wherein, because the actual pixels rate of MPEG2 is the 11MHz degree when hypothesis SIF (source input format), therefore, by use with 32,80MHz work be used as risc processor 31 among the MPEG/CD-G demoder 9a, just can handle the stream signal of MPEG1 and MPEG2 (and CD-G).
Below with reference to Figure 11～Figure 14 the processing of resetting is described.At first, MPEG/CD-G demoder 9a according to judge from the sign read of dish D DVD still be CD-G still be VCD (step S1, S2, S8), under the situation that is DVD, select Fig. 4～Fig. 6 DVD decoding processing (step S3, S6) of expression in detail, under the situation that is CD-G, select Fig. 7～Fig. 9 CD-G decoding processing (step S4, S7) of expression in detail, under the situation that is VCD, select Figure 12～Figure 14 VCD decoding processing (step S9, S10) of expression in detail.Under all no situation, on display part 20, show to reset (step S5).
In VCD handles, as shown in Figure 12, V assembly and A assembly (step S31) shown in identification Figure 15 (b), then, the data of V assembly are gone format and offered video display processor 34 (step S32), the data of A assembly are gone format and offered audio signal output portion 38 (step S33).If have Network ロ-ズ De キ ヤ プ シ ヨ Application (CC) data, it is transformed to code and offers video display processor 34 (step S34 → S35).
As described above, according to the present invention, demoder is set, judge that according to the sign of being reset from dish this dish is CD-G or DVD, come pictorial data is carried out CD-G decoding processing or DVD decoding processing, thus, just can be with the specification of the formation playback pictorial data of cheapness the DVD dish different with CD-G.
Demoder is set, judge that according to the sign of being reset from dish this dish is CD-G or DVD or VCD, come pictorial data is carried out CD-G decoding processing or DVD decoding processing or VCD decoding processing, thus, just can be different DVD and the dish of VCD with CD-G with the specification of the formation playback pictorial data of cheapness.
Label declaration in the accompanying drawing:
In Fig. 1:
3:CD-G/DVD decoder/servo control circuit
5: the input instruction unit
The 11:SP servo circuit
20: display part
37: speed adjustment buffer
The 9:MPEG/CD-G decoder
b1：8b1 b2：8b2 b3：7b3 b4：1b4 b5：3b5 10： 23：NTSC/PAL 15：D/A 2： 31：RISC 33： 32： 34： 38： 35：DRAM 3： S1：DVD？ S2：CD-G？ S3：DVD S4：CD-G S5： S6：？ S7：？ 4： S3：DVD S11：VA S12：V S13：A 5： S14： S15： 6： S16：CH S17：D/A S18： 7： S4： CD-G S21：A S22：CD-G？ S23：CD-G 8： S24： S24’： S25： 9： S26：CH S27：D/A S28： 10： 3a：CD-G/DVD/VCD/ 5： 11：SP 20： 37： 9a：MPEG/CD-G b1：8b1 b2：8b2 b3：7b3 b4：1b4 b5：3b5 10：SSG 23：NTSC/PAL 15：D/A 11： S1：DVD？ S2：CD-G？ S3：DVD S4：CD-G S5： S6：？ S7：？ S8：VCD？ S9：VCD S10：？ 12： VCD S31：VA S32：V S33：A S34：CC？ S35： 13： S36： S37： 14： S38：CH S39：D/A S40： 16： 90： 91： 92： 93：
Claims (4)
1. a disc reproducing apparatus is characterized in that, comprising:
Go formatting mechanism, judge that according to the sign of being reset from dish this dish is CD-G or DVD, under the situation of CD-G, go format to take out the CD-G data stream the CD-G form, under the situation of DVD, go format to take out the DVD data stream to the DVD form; With
Decoding device, under the situation of CD-G, carry out the CD-G decoding processing, be included in the voice data in each audio frequency picture of above-mentioned CD-G data stream with taking-up and be recorded in still image data in the subcode in each audio frequency picture, under the situation of DVD, carry out the DVD decoding processing, be included in video packets and audio pack in the above-mentioned DVD data stream with identification, from video packets, take out view data, from audio pack, take out voice data.
2. a disc reproducing apparatus is characterized in that, comprising:
Go formatting mechanism, judge that according to the sign of being reset from dish this dish is DVD or CD-Video, under the situation of DVD, go format to take out the DVD data stream the DVD form, under the situation of CD-Video, go format to take out the CD-Video data stream to the CD-Video form; With
Decoding device, under the situation of DVD, carry out the DVD decoding processing, be included in video packets and audio pack in the above-mentioned DVD data stream, from the video packets of DVD, take out view data with identification, from the audio pack of DVD, take out voice data, under the situation of CD-Video, carry out the CD-Video decoding processing, be included in video packets and audio pack in the above-mentioned CD-Video data stream with identification, from the video packets of CD-Video, take out view data, from the audio pack of CD-Video, take out voice data.
3. disc reproducing apparatus according to claim 2 is characterized in that,
The above-mentioned formatting mechanism of going further judges according to the sign of being reset from dish whether this dish is CD-G, under the situation of CD-G, goes format to take out the CD-G data stream to the CD-G form;
Above-mentioned decoding device under the situation of CD-G, further carries out the CD-G decoding processing, is included in the voice data in each audio frequency picture of above-mentioned CD-G data stream with taking-up and is recorded in still image data in the subcode in each audio frequency picture.
4. according to each described disc reproducing apparatus in the claim 1 to 3, it is characterized in that above-mentioned decoding device is made of a chip.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9176511A JPH117711A (en) | 1997-06-17 | 1997-06-17 | Optical disc reproducer |
| JP176511/97 | 1997-06-17 | ||
| JP176511/1997 | 1997-06-17 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1206179A CN1206179A (en) | 1999-01-27 |
| CN1118797C true CN1118797C (en) | 2003-08-20 |
Family
ID=16014913
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98102276 Expired - Fee Related CN1118797C (en) | 1997-06-17 | 1998-06-15 | Optical disk reproducing device |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JPH117711A (en) |
| CN (1) | CN1118797C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3944122B2 (en) * | 2003-06-05 | 2007-07-11 | 株式会社東芝 | Information recording medium, information recording method, information recording apparatus, information reproducing method, and information reproducing apparatus |
| JP4672779B2 (en) * | 2009-03-12 | 2011-04-20 | パナソニック株式会社 | Format change method and information reproduction method |
-
1997
- 1997-06-17 JP JP9176511A patent/JPH117711A/en active Pending
-
1998
- 1998-06-15 CN CN 98102276 patent/CN1118797C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1206179A (en) | 1999-01-27 |
| JPH117711A (en) | 1999-01-12 |
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