CN1893602A - Digital broadcasting receiving device and digital information receiving device, and playback method - Google Patents
Digital broadcasting receiving device and digital information receiving device, and playback method Download PDFInfo
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Abstract
Digital broadcasting receiving device and digital information receiving device and playback method configured such that in the case where digital information containing an audio stream is received, when an instruction of pause of looking and listening of the digital information is inputted, received digital information is stored, and when an instruction of canceling the pause is inputted, while the digital information is stored, fast-forward playback of the stored digital information is performed with playback speed of the stored digital information being changed in several stages. In this configuration, when the playback speed of the stored digital information is changed, audio frames of the audio stream are decoded with a thinning level of the audio frames being changed.
Description
Technical field
The present invention relates to have the digital broadcast receiving device of recording function and digital information receiving system, reproducting method.
Background technology
Open the spy and to disclose the digital broadcast record reproducing device that the image information recording of received program is reproduced on the recording medium in the 2001-094948 communique, in this digital broadcast record reproducing device, temporarily stopping because of the user etc., when making the broadcast of the scene on display unit, reproduced be later than present moment constantly, when catching up with reproduction by user's instruction, reading this at the TS (transportation flow) by means of this scene of expression from recording medium plays constantly, simultaneously, with comparing unit the present moment of obtaining the unit with present moment and providing is compared.Along with playing constantly, make reproduction speed that express delivery reproduces near the such control of reproduction speed of reproduction usually to reproduction speed with the reproduction speed control unit near present moment.
Owing to comprise not only that in broadcast program image information also comprises acoustic information, so when express delivery reproduces, also have the requirement of wanting to confirm acoustic information, simultaneously, for acoustic information, reproducing from express delivery when switching to current the broadcast, requiring the user's that alleviates at its boundary sticky feeling.For example, when the frequency that makes sound changes sharp, because the user has sticky feeling, so must eliminate such problem.
So, the digital broadcast receiving device that can improve the express delivery representational role and digital information receiving system, reproducting method just need be provided.
Summary of the invention
In the present invention, if when under the situation that receives the digital information that contains audio data stream, having imported the instruction of the audiovisual that will temporarily stop digital information, will store received digital information.When imported remove this instruction that temporarily stops after, will be in this digital information of storage, a plurality of stages ground of the reproduction speed of the digital information of being stored will be changed carry out express delivery and reproduce.When the reproduction speed that makes this digital information of storing changes, will adopt the way of the centre amount of removing of the audio frame that changes audio data stream to decode.
Description of drawings
Fig. 1 shows the block diagram of the inside configuration example of digital broadcast receiving device.
Fig. 2 shows the flow chart of the example that the digital broadcast of digital broadcast receiving device receive to handle.
Fig. 3 is the key diagram that is used for illustrating the form of compressing image data.
Fig. 4 is the key diagram that is used for illustrating the principle of the express delivery reproduction of adopting the way that improves the sample frequency when reproducing to realize audio data stream.
Fig. 5 is used for illustrating that employing realizes the key diagram of the principle that the express delivery of audio data stream reproduces to the way of removing part amount (remove) in the middle of will carrying out to the audio frame of voice codec portion input.
Fig. 6 shows the processing sequence that express delivery reproduces is carried out on the limit to the data of playing the limit of recording a video now video recording being finished flow chart.
Fig. 7 shows the block diagram of the inside configuration example of the digital broadcast receiving device that has appended the function that makes the sample frequency variation.
Embodiment
An example that has the digital broadcast receiving device of recording function with the drawing explanation.
Fig. 1 shows the block diagram of the example that the inside of the digital broadcast receiving device 100 of portable terminal device type constitutes.In addition, portable terminal device type device is not restricted to the portable terminal device type device that the user keeps, and also comprises the portable terminal device type device of the vehicle-mounted purposes that will be loaded on the automobile.In addition, though below to the device of portable terminal device type be described,, be not limited to the device of portable terminal device type, also can use the present invention to the device of fixed in position type.
When receiving digital broadcast with reception antenna 104 and channel selection portion 103, will temporarily be saved in the storage part 107 by broadcast.Temporary transient digital broadcast data of preserving, can be separated into compressing image data and compression sound data by means of control part 101.Compressing image data usable image lsb decoder 110 is decoded, and shows with display part 111.In addition, then available sounds lsb decoder 112 decodings of compression sound data become to exporting behind the sound with audio output unit 113.Under situation about will record a video, will be kept at the digital broadcast data in the program preservation portion 108 digital broadcast program.
By communication transmission/reception antennas 106 and wireless communication part 105, received numerical data temporarily is kept in the storage part 107.Temporary transient numerical data of preserving, can separate by means of 101 pairs of data of control part.Under the situation of lteral data that is mail etc., just on display part 111, show, under the situation of voice data that is conversation etc., then use audio output unit 113 as voice output.In addition,, read the data that are kept in storage part 107 grades, send as numerical data with transmission/reception antennas 106 with communicating by letter by wireless communication part 105 by means of the control of control part 101.
Fig. 2 shows the flow chart of the example that the digital broadcast of digital broadcast receiving device 100 receive to handle.Be used for carrying out the program of this processing, existed in the storage part 107, can carry out by means of control part 101.
After the reception of digital broadcast begins (step 201), view data just shows on display part 111 that voice data is then exported from audio output unit 113, thereby just can carry out audiovisual (step 202) to broadcast.Imported in playback of audio-visual at control part 101 under the situation of halt instruction (step 203), will finish to play the processing (step 204) of reception.
In addition, control part 101 also will detect to have imported the instruction (step 205) that temporarily stops whether.As in playback of audio-visual, temporarily being stopped, then beginning video recording (step 206), and successively video recording is saved in the program preservation portion 108.If in playback of audio-visual, stop or temporarily stopping all not take place, then proceed playback of audio-visual.
In temporary transient stopping period, control part 101 will be waited for and temporarily stop to be disengaged (step 207).Temporarily stop to be disengaged if in step 207, can detect, then will differentiate the playback system (step 208) after temporarily stopping.In this digital broadcast receiver 100, the time difference that has between the played data that makes existing broadcast and reproducing keeps invariable, move reproduction and reproduce this 2 kinds of modes with the time that common reproduction speed reproduces the played data of being recorded a video with the express delivery that express delivery makes the played data of reproducing catch up with the such reproduction of existing broadcast to the played data of being recorded a video.
In step 208, the playback system after temporarily stopping is to move the time under the situation of reproduction, will record a video on one side to existing broadcast, reproduce the data (step 209) of having recorded a video on one side.Control part 101 under the situation about stopping (step 210), finishes video recording (step 211) in reproducing audiovisual, finish to play the processing (step 212) that receives, end of reproduction audiovisual (step 213).
In step 208, the playback system after temporarily stopping is under the situation about reproducing fast, will transfer on one side existing broadcast will be recorded a video, on one side quick processing (step 214) of reproducing the data of having recorded a video.As for the details of this express delivery reproduction processes, will describe with Fig. 6 in the back.
Here express delivery is reproduced and describe.Fig. 3 shows the form of compressing image data, and what illustrate is that image stream all has been divided into a plurality of GOP (picture group: the situation of the data block of unit Group of Pictures).
In MPEG4 (animation expert group 4, by the normalized compression coding technology (ISO/IEC14496) that comprises the data of animation sound of the International Organization for Stand) in the compress mode based on the view data of simple profile of specification, in addition 1 GOP does not have I picture with reference to image (Intra Picture: produce a plurality of P pictures (Predictive Picture: predictive picture) constitute of picture frame with reference to image picture in the territory) with reference to the place ahead by producing picture frame independently.
Want to produce separately the P picture, though need be with reference to image, the I picture does not then need with reference to image, so can only reproduce the I picture, adopts the way only show this I picture successively, just can carry out the express delivery reproduction of image stream with reproduction speed arbitrarily.In the present embodiment, show all I pictures or the I picture of every group of several I pictures with the constant time interval, the express delivery that carries out image stream reproduces.
Fig. 4 is that explanation adopts the way that improves the sample frequency when reproducing to realize that the express delivery of audio data stream reproduces the key diagram of principle.
Voice data is made of a plurality of audio frames, and 1 audio frame is that the data with 1024 samplings constitute.In sample frequency is under the situation of 48kHz, and the duration (reproduce duration) that can reproduce 1 audio frame is 21.3ms (1024 samplings/48kHz).Here, if the sample frequency when reproducing is brought up to 64kHz, the duration that then can reproduce 1 audio frame just will become (1024 samplings/64kHz), can reproduce with 1.33 times of speed (64kHz/48kHz=21.3ms/16ms) for 16ms.Adopt the way of the sample frequency when at random improving this reproduction, just can reproduce with speed arbitrarily.
In Fig. 4, show such situation: the reproduction duration of 6 received audio frame is 128ms ((1024 sampling/48kHz) * 6), and the reproduction duration that the sample frequency when reproducing is brought up to 6 the audio frame of 64kHz then is 96ms ((1024 sampling/64kHz) * 6).The reproduction speed of sound is 1.33 times (64kHz/48kHz).But, if the sample frequency when improve reproducing, then when record and when reproduction sound frequency gets higher, become to having the very sound of sticky feeling.
In the present embodiment, when the audio data stream that is made of received a plurality of audio frame to voice codec portion 112 input, remove the way of audio frame between adopting from a plurality of audio frames moderately, the express delivery that carries out sound reproduces.
Shown in Fig. 5 is situation about importing to voice codec portion 112 behind (removing) audio frame removing between per 4 audio frames of 12 received audio frame.Remove an audio frame between per 4 audio frames 12 audio frames during from reception, to the audio frame of 9 of voice codec portion 112 inputs.The reproduction duration of 12 consequently received audio frame is 256ms ((1024 sampling/48kHz) * 12), and in voice codec portion 112, then becoming is 9 audio frame, the reproduction duration of audio frame just becomes for 192ms ((1024 sampling/48kHz) * 9), and the reproduction speed of sound is 1.33 times (256ms/192ms).
As mentioned above, if adopt present embodiment because when record and when reproduction sound sample frequency constant, so just can reproduce the sound that does not have sticky feeling.In addition, owing to remove between audio data stream having been carried out, for use exist noise in the localities at the audio frame that removes between quilt produce and understand the sort of degree how many possibilities that can reduce of degree, that remove an audio frame between per 4 audio frames between eliminating method,, be rank no problem in practicality then for the sound after reproducing in the practicality.
Table 1 be expression catch up with under the situation of existing broadcast between remove amount and reproduction speed, based on and existing broadcast between the reproduction speed of time difference and an example of the control data of the relation between the duration.At the such control data shown in such table 1, be stored in the storage part 107, control part 101 carries out the control of reproduction speed according to this control data.For example, under the situation that the state from lag behind 10 minutes (600 seconds) begins to reproduce, will begin to reproduce then fast from the state of lag behind 5 minutes (300 seconds) since 1.3333 times of speed since 1.2308 times.
[table 1]
| No. | Between remove amount | Reproduction speed (N is speed doubly) | Ratio to next reproduction speed | Decision (second) based on the reproduction speed of time difference | The continuation time (second) |
| 1 | Do not have | 1.0000 | 1.0294 | - | - |
| 2 | Per 35 frames, one frame | 1.0294 | 1.0286 | Less than 12 | 312 |
| 3 | Per 18 frames, one frame | 1.0588 | 1.0232 | 12～less than 30 | |
| 4 | Per 13 frames, one frame | 1.0833 | 1.0256 | 30～less than 56 | |
| 5 | Per 10 frames, one frame | 1.1111 | 1.0286 | 56～less than 93 | |
| 6 | Per 8 frames, one frame | 1.1429 | 1.0208 | 93～less than 137 | |
| 7 | Per 7 frames, one frame | 1.1667 | 1.0286 | 137～less than 191 | |
| 8 | Per 6 frames, one frame | 1.2000 | 1.0256 | 191～less than 255 | |
| 9 | Per 16 frames, three frames | 1.2308 | 1.0292 | 255～less than 330 | |
| 10 | Per 19 frames, four frames | 1.2667 | 1.0263 | 330～less than 416 | |
| 11 | Per 13 frames, three frames | 1.3000 | 1.0256 | 416～less than 512 | |
| 12 | Per 4 frames, one frame | 1.3333 | — | More than 512 |
In this example, remove between not carrying out except that 1 times of speed of audio frame, also have 1.3333 times of speed removing 1 frame from per 4 interframe are removed 1.0294 times of speed of 1 frame to per 35 interframe 11 kinds reproduction speed.
Audio frame removes between can for example can followingly carrying out like that.Removing between per 16 audio frames on the 9th hurdle under the situation of 3 frames, in the middle of 5 initial frames, remove 1 audio frame, removing 1 audio frame in the middle of 6 audio frames secondarily, removing 1 audio frame in the middle of 5 audio frames secondarily.In addition, under the situation of the reproduction speed on the 10th hurdle, in the middle of 5 initial audio frames, remove 1 audio frame, remove 1 audio frame in the middle of 5 audio frames secondarily, remove 1 audio frame in the middle of 5 audio frames secondarily, remove 1 audio frame in the middle of 4 audio frames secondarily.Under the situation of the reproduction speed on the 11st hurdle, in the middle of 4 initial audio frames, remove 1 audio frame, remove 1 audio frame between in 4 audio frames secondarily, remove 1 audio frame in the middle of 5 audio frames secondarily again.
As to establish initial lag time be 10 minutes (600 seconds), reproduction speed is 11 stages, the duration of each reproduction speed is T (second), and then the summation owing to lag time+duration equates with the summation of each reproduction speed * duration, so formula (1) is set up.
600+T×11＝T×∑(1.0294+……+1.3333)……(1)
According to the duration T (second) of each reproduction speed of formula (1), for
T＝600/(∑(1.0294+……+1.3333)-11)
＝600/(12.9230-11)
＝312………………(2)
And the time till catch up with, according to formula (3), will become is 3432 seconds (about 57 minutes).
312×11＝3432……(3)
People's susceptibility, because even if the number of stages that changes is identical, rate of change is more also to have the characteristic that is difficult to detect under the constant situation of constant side and amplitude of variation, so in table 1, carried out making the rate of change of reproduction speed to become being constant (2.08%～2.94%) such adjustment substantially to removing amount.
In addition, in table 1, though the reproduction speed with 11 kinds makes it to change except that 1 times of speed,, be not limited thereto, also can become and make per 3 interframe reproduce except 2.0 times of speed of 1 frame except 1.5 times of speed or per 2 interframe of 1 frame.In addition, can also become remove quantitative changeization between making must be thinner than the example shown in the table 1.In this case, because reproduction speed is changed, so can alleviate the user's who produces by velocity variations sticky feeling.Otherwise, if reproduction speed is controlled more roughly, owing to can reduce the number of times of control reproduction speed, so can alleviate the burden of control program.But, in order when alleviating user's sticky feeling, to suppress the burden of control program, it is desirable to as shown in table 1ly, it is 2.08%～2.94%. that the rate of change of reproduction speed is become
In addition, in the example of table 1, though the duration of each reproduction speed is all become to constant,, each reproduction speed is all changed the duration.For example, also can then make the duration all the more long, catch up with the time of existing broadcast with shortening so that reproduction speed is fast more.
In addition, in the example of table 1, and existing broadcast between time difference surpassed under 512 seconds the situation, reproduce with 1.333 times of speed till being 512 seconds though will become up to the time difference, but, also can become and make and for example surpassed under the situation of 10 minutes (600 seconds), reproduce except 2.0 times of speed of 1 frame except 1.5 times of speed or per 2 interframe of 1 frame with per 3 interframe in the time difference.Owing to will carry out such control, so can shorten the time that catch up with till the existing broadcast.
In addition, also can become and make not to storage part 107 stored control datas, and replacing the relational expression of number of stages, each reproduction speed and the relation of duration of storage representation lag time and reproduction speed, control part 101 calculates reproduction speed according to this relational expression.
In this example, under the situation of the reproduction speed that will consistently change figure, can make and to change to the time interval of the picture frame of display part 111 output with the reproduction speed of sound.For example, if establishing the frame number that will show during 1 second is 15, then the time interval of picture frame, when 1 times of speed (standard state), just will become for 66.66ms (1 second/15).Adopt to shorten the way that time interval of this picture frame reproduces, just can accelerate the reproduction speed of image.Table 2 shows the time interval of the picture frame corresponding with the audio reproduction speed of table 1.
[table 2]
| No. | Between remove amount | Audio reproduction speed (N is speed doubly) | The time interval of picture frame (ms) |
| 1 | Do not have | 1.0000 | 66.66 |
| 2 | Per 35 frames, one frame | 1.0294 | 64.76 |
| 3 | Per 18 frames, one frame | 1.0588 | 62.96 |
| 4 | Per 13 frames, one frame | 1.0833 | 61.54 |
| 5 | Per 10 frames, one frame | 1.1111 | 60.00 |
| 6 | Per 8 frames, one frame | 1.1429 | 58.33 |
| 7 | Per 7 frames, one frame | 1.1667 | 57.14 |
| 8 | Per 6 frames, one frame | 1.2000 | 55.56 |
| 9 | Per 16 frames, three frames | 1.2308 | 54.17 |
| 10 | Per 19 frames, four frames | 1.2667 | 52.63 |
| 11 | Per 13 frames, three frames | 1.3000 | 51.28 |
| 12 | Per 4 frames, one frame | 1.3333 | 50.00 |
Fig. 6 show Fig. 2 step 214, the limit carries out the flow chart of the treatment step that express delivery reproduces to record a video data that the limit finishes to video recording of existing broadcast.
After express delivery reproduces beginning (step 601), control part 101 will detect in the moment that video recording is located constantly and the time difference between the existing broadcast, calculate reproduction speed (step 602) with the control data or the relational expression that are stored in the storage part 107, video recording is proceeded on the limit, and the limit uses the reproduction speed that is calculated to reproduce the data (step 603) that video recording finishes.
Whether control part 101 is judged in moment of the video recording moment at place (moment of the video recording data that record is reproducing) and existing broadcast constantly consistent (step 604).(till catching up with existing broadcast) carries out the processing of step 602 and step 603 repeatedly successively till the moment of locating constantly in video recording is consistent with the moment of existing broadcast.Reproduction speed therebetween will be little by little slack-off, successively near 1.0 times of speed.Under the moment of the video recording data reproduced of the record situation consistent, just finish video recording (step 605), the existing broadcast (step 606) that is receiving to display part 111 and audio output unit 113 outputs with the moment of existing broadcast.
In addition, control part 101 under the situation about being stopped in playback of audio-visual (step 607), just makes to play to receive and finishes (step 608).
In the present embodiment, make it to become for constant substantially, so can alleviate the sticky feeling of being experienced the boundary user who switches to existing broadcast from the express delivery reproduction owing to will be controlled to be reproduction speed.
Table 3 shows the sample frequency that makes when reproducing and also is changed to simultaneously and makes and can make a reproduction speed example of the control data under the such situation of conversion continuously.
[table 3]
| No. | Between remove amount | Reproduction speed (N is speed doubly) | Ratio to next reproduction speed | Sample frequency number (kHz) to next reproduction speed |
| 1 | Do not have | 1.0000 | 1.0294 | 49.412 |
| 2 | Per 35 frames, one frame | 1.0294 | 1.0286 | 49.371 |
| 3 | Per 18 frames, one frame | 1.0588 | 1.0232 | 49.111 |
| 4 | Per 13 frames, one frame | 1.0833 | 1.0256 | 49.231 |
| 5 | Per 10 frames, one frame | 1.1111 | 1.0286 | 49.371 |
| 6 | Per 8 frames, one frame | 1.1429 | 1.0208 | 49.000 |
| 7 | Per 7 frames, one frame | 1.1667 | 1.0286 | 49.371 |
| 8 | Per 6 frames, one frame | 1.2000 | 1.0256 | 49.231 |
| 9 | Per 16 frames, three frames | 1.2308 | 1.0292 | 49.400 |
| 10 | Per 19 frames, four frames | 1.2667 | 1.0263 | 49.263 |
| 11 | Per 13 frames, three frames | 1.3000 | 1.0256 | 49.231 |
| 12 | Per 4 frames, one frame | 1.3333 | - | - |
For example, switch under the situation of 1.300 times of speed from 1.333 times of speed, will adopt this is temporarily become way for 49.231kHz as the 48kHz of original sample frequency, making it to become is 1.333 times reproduction speed.Then, adopt to make sample frequency at leisure, transfer to 1.300 times of speed continuously from the way that 49.231kHz is varied to 48kHz.As mentioned above, adopt the way of the sample frequency variation that makes when reproducing, just can make the reproduction speed of sound be varied to 1.0 times of speed continuously.
In addition, in the example of table 3, configured and made and acoustically not do not hindering, the rate of change of sample frequency becomes to calculating with the average rate scale, as this half scale of such reproduction speed below 2.973% as 2** (1/12)=1.05946 times (rate of change 5.946%) of the height (frequency) of the sound till the scale (semitone) of next.
Fig. 7 shows the block diagram of the example that the inside of having appended the digital broadcast receiving device 700 that makes the function that sample frequency changes constitutes.In Fig. 7, all given same label for the part that those and Fig. 1 are same.
In the present embodiment, adopt the way of using this function to improve the operating frequency of picture decoding portion 110, improved the disposal ability of picture decoding portion 110, realized that the express delivery that shows all frames that comprise the P picture reproduces rather than the only reproduction of I picture.Certainly, originally just have under the situation of enough and to spare in the disposal ability of picture decoding portion 110, just can realize such reproduction and need not improve the operating frequency of picture decoding portion 110, this is self-evident.
In the present embodiment, though consistently changed the reproduction speed of image with the reproduction speed of sound,, also can consistently change the reproduction speed of sound with the reproduction speed of image.
In the present embodiment, owing to will alleviate the burden of voice codec portion, so when the input of voice codec portion, between except audio frame, but, can adopt also that (pulse code modulation: Pulse code modulation) way removed between carrying out of data realizes to the PCM that produced when the output of voice codec portion.In this case, though the burden of voice codec portion fails to alleviate, effect is identical on the meaning that reproduction speed is changed.
In digital broadcast, though usefully ground roll digital broadcast of carrying out or the digital broadcast by artificial satellite,,, can use the present invention with regard to all being then to be the same with wireless digital broadcast of carrying out.In addition, even if the digital broadcast of carrying out with wired cable TV self-evidently also can be used the present invention.
Just as discussed above, the present invention can provide the digital broadcast receiving device that can improve the express delivery representational role and digital information receiving system, reproducting method.
Claims (8)
1. digital broadcast receiving device is characterized in that: comprising:
Reception comprises the acceptance division of the digital broadcast of audio data stream;
Storage is by the storage part of the received digital broadcast of described receiving element;
To by the received audio data stream of described acceptance division or be stored in the voice codec portion that the audio data stream in the described storage part is decoded; With
Carry out the control part of following control: when having imported the instruction of the audiovisual that temporarily stops digital broadcast, just utilize described storage portion stores digital broadcast, when having imported when removing the described instruction that temporarily stops, just store described digital broadcast on one side, the a plurality of stage ground of the reproduction speed that is stored in the digital broadcast in the described storage part are changed to carry out express delivery to be reproduced
Described control part, when the reproduction speed that is stored in the digital broadcast in the described storage part is changed, change the audio frame that is stored in the audio data stream in the described storage part between remove amount and import described voice codec portion.
2. digital broadcast receiving device according to claim 1 is characterized in that:
Described control part, when the reproduction speed that is stored in the digital broadcast in the described storage part is changed, according to the rate of change that makes described reproduction speed become for constant substantially mode change described audio data stream audio frame between remove amount.
3. digital broadcast receiving device according to claim 1 is characterized in that:
Described control part when the reproduction speed that is stored in the digital broadcast in the described storage part is changed, changes the sample frequency of described voice codec portion.
4. digital broadcast receiving device according to claim 1 is characterized in that:
Described control part according to the storage of carrying out the digital broadcast that described express delivery reproduces constantly and the time difference between the present moment, changes the reproduction speed that is stored in the digital broadcast in the described storage part.
5. digital broadcast receiving device according to claim 1 is characterized in that:
Described digital broadcast comprises image data stream, and described digital broadcast receiving device possesses the display part of the described image data stream of output,
Described control part under changing with the situation of carrying out the express delivery reproduction, changes the time interval of the described image data stream that outputs to described display part with making a plurality of stages of the reproduction speed that is stored in the digital broadcast in the described storage part.
6. a digital information reproducting method is characterized in that, comprises the steps:
Reception comprises the digital information of audio data stream,
Under the situation that receives digital information, when having imported the instruction of the audiovisual that temporarily stops described digital information, store received digital information,
Import when removing the described instruction that temporarily stops,, reproducing Yi Bian a plurality of stages ground of the reproduction speed of the digital information of being stored are changed carry out express delivery Yi Bian store described digital information,
When the reproduction speed that makes described digital information of storing changes, remove amount between the audio frame of change audio data stream and decode.
7. digital information reproducting method according to claim 6 is characterized in that:
When the reproduction speed of the digital information that makes described storage changes, according to the rate of change that makes described reproduction speed become for constant substantially mode change described audio data stream audio frame between remove amount.
8. a digital information receiving system is characterized in that, comprising:
Reception comprises the acceptance division of the digital information of audio data stream;
Storage is by the storage part of the received digital information of described receiving element;
To by the received audio data stream of described acceptance division or be stored in the voice codec portion that the audio data stream in the described storage part is decoded; With
Carry out the control part of following control: when having imported the instruction of the audiovisual that temporarily stops digital information, just utilize described storage portion stores digital information, when having imported when removing the described instruction that temporarily stops, just store described digital information on one side, the a plurality of stage ground of the reproduction speed that is stored in the digital information in the described storage part are changed to carry out express delivery to be reproduced
Described control part, when the reproduction speed that is stored in the digital information in the described storage part is changed, change the audio frame that is stored in the audio data stream in the described storage part between remove amount and import described voice codec portion.
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| JP2005189157 | 2005-06-29 | ||
| JP2005189157A JP2007013358A (en) | 2005-06-29 | 2005-06-29 | Digital broadcasting receiving device |
| JP2006075861 | 2006-03-20 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101383961B (en) * | 2007-09-06 | 2010-12-22 | 索尼株式会社 | Content reproduction appratus, content reproduction method, and content reproduction system |
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| JP2008250654A (en) | 2007-03-30 | 2008-10-16 | Alpine Electronics Inc | Video player and video playback control method |
| EP2186326A1 (en) * | 2007-09-10 | 2010-05-19 | Thomson Licensing | Video playback |
| JP5328432B2 (en) * | 2009-03-13 | 2013-10-30 | アルパイン株式会社 | Digital broadcast receiving apparatus and program switching method |
| JP6953771B2 (en) * | 2017-04-11 | 2021-10-27 | 船井電機株式会社 | Playback device |
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| JPH1166748A (en) * | 1997-08-14 | 1999-03-09 | Sony Corp | Digital reproducer and digital recording and reproducing device |
| JP2001094948A (en) * | 1999-09-27 | 2001-04-06 | Sanyo Electric Co Ltd | Digital broadcast recording and reproducing device |
| JP2003029794A (en) * | 2001-07-17 | 2003-01-31 | Mitsubishi Electric Corp | Device and method for reproducing voice |
| JP2005032408A (en) * | 2003-06-20 | 2005-02-03 | Matsushita Electric Ind Co Ltd | Recording/playback device |
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| CN101383961B (en) * | 2007-09-06 | 2010-12-22 | 索尼株式会社 | Content reproduction appratus, content reproduction method, and content reproduction system |
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