CN101600073A

CN101600073A - Automatically select the apparatus and method of recording parameters according to programme content

Info

Publication number: CN101600073A
Application number: CN 200810099895
Authority: CN
Inventors: 王鸿鸣; 刘立品; 藤井由纪夫; 长屋茂喜
Original assignee: Hitachi Ltd
Current assignee: Hitachi Ltd
Priority date: 2008-06-06
Filing date: 2008-06-06
Publication date: 2009-12-09

Abstract

The invention provides a kind of method and apparatus of recorded announce program, this device comprises: user interaction unit, be used to be provided with program recording management information, described program recording management information comprises program sort information and the user recording parameters to should program category setting; Memory cell is used to store described program recording management information; Analytic unit is used for extracting program sort information from the transport stream of described broadcast program; Record cell is used to write down described broadcast program; Processing unit, in the described program recording management information of described cell stores, retrieval and the corresponding setting recording parameter of program sort information that described analytic unit extracts are controlled described record cell and are write down described broadcast program according to result for retrieval.

Description

Automatically select the apparatus and method of recording parameters according to programme content

Technical field

The present invention relates to a kind of tape deck and method of TV programme.Be particularly related to a kind of writing function is regulated recording parameters automatically according to programme content apparatus and method that are used for.

Background technology

Along with the development of TV industry, content of TV program is more and more rich and varied, and the TV programme that can select and television content are also more and more.Make people when watching TV, can select corresponding program like this according to the personal like.But because the restriction of program broadcasting time, people can't see the program that they like sometimes.So people need get off the telerecording of liking, to watch in time easily, this function is recorded exactly.At present, recording function extensively is present in the products such as television set, set-top box, video disc player and TV card.

Present recording arrangement is recorded program according to the original resolution of program, yet because video data occupies bigger space, the recording arrangement finite storage space often can not satisfy the demand that the user records large-scale program.So, how to reduce the memory space of program, allowing finite storage space store more program becomes demand.

High-quality is the developing direction of Video service, future television program can adopt more and more higher resolution, yet not all video content all is to record resolution or definition is high more good more, as advertisement, news etc., the user is not high to the requirement of its video quality, these programs can adopt lower resolution or lower image definition to record, and can reduce the size of video like this, save memory space.

In the coding standard of the video of main flow, as MPEG-2, MEPG-4, H.264 with AVS etc., to the far-reaching parameter of image definition quantization parameter (the Qutification Parameter that is encoder, be called for short QP), when increasing quantization parameter QP, the definition of image will reduce, the bit rate that produces behind the video coding also can reduce, when lower quantization coefficient QP, the definition of image will improve, and the bit rate that produces behind the video coding also can increase.Therefore, in coding techniques, often adjust the bit rate size that obtains behind the video coding by the size of adjusting QP.

Publication number be 2005-354148 Japanese Patent Application Publication a kind of method and apparatus of recording resolution according to the video content different choice.This device is in the process of recording, identify the sign that advertisement begins and finishes according to program and advertisement audio frequency characteristics different, at first program is recorded with its original resolution, when detecting advertisement and begin, reducing the resolution of recording records, when detecting the advertisement end, changing the resolution of recording again is original resolution.Reach the purpose of saving memory space with this.

Though above-mentioned technology can reduce the memory space of program to a certain extent, exists following shortcoming:

(1) this patent is only effective to ad content, and for the program that does not have advertisement, this technology is effect not.

(2) mid-roll ad only accounts for less part, and this technology only reduces the resolution of advertisement, and the effect of saving memory space is also not obvious.

(3) this technology is only saved memory space by adjusting resolution, and can not adjust the definition of image.

Therefore need a kind of record device and the method that can avoid the problems referred to above.

Summary of the invention

The problem to be solved in the present invention provides a kind of television program record apparatus and method, these apparatus and method are according to the different recording parameterses of selecting automatically of programme content, recording parameters is the image parameter relevant with bit rate, can be including, but not limited to quantization parameter QP of resolution, image encoder etc.

One aspect of the present invention provides a kind of device that is used for television program record, and this device can be but be not limited to video recorder, television set, set-top box, TV card, computer and mobile phone that this device comprises:

The code stream analysis unit is used for extracting the program sort information and the parameter information of the code stream that is received;

Memory cell is used for storing in advance presetting and records admin table and buffer memory code stream, wherein records the corresponding relation that admin table has been described program sort information and preset recording parameter;

CPU is used for retrieving recording admin table, with the pairing preset recording parameter of determining to extract with described code stream analysis unit of program sort information;

User input unit is used for interpolation and the modification of user to recording admin table;

The video converting unit is used for video frequency program is changed according to the preset recording parameter;

Record cell is used for telerecording to medium.

Another aspect of the present invention provides a kind of method that the TV programme condition is recorded that is used for, and comprising:

(1) extracts program sort information and parameter information in the code stream received;

(2) admin table is recorded in storage in advance, and this records the corresponding informance that admin table comprises program category and preset recording parameter;

(3) classification information of the current program of retrieval in recording admin table is to determine program corresponding preset recording parameters;

(4) size of comparison program initial parameter and preset recording parameter is determined the recording of programs parameter;

(5) program of needs change parameter is changed.

(6) with program recording to medium.

Described step (3) specifically may further comprise the steps:

3-1), return its corresponding preset recording parameters if retrieve successfully;

3-1), then ask the user to import the preset recording parameter of this program category, return this preset recording parameter, and upgrade and record admin table if retrieval is unsuccessful.

Utilize apparatus and method of the present invention, the user can be provided with the recording of programs parameter according to the difference of programme variety, recording parameters can be quantization parameter, encoded bit rate of resolution, coding etc., reach the purpose of saving the program storage space with this, such as, being resolution 1280 * 720 high definition program carries out record with 352 * 288 CIF form, can envoy's purpose size reduces to originally approximately 1/9, has saved 8/9 memory space; On the other hand, the user can select suitable recording parameters according to the size of memory space and the time of program recording.

Description of drawings

Fig. 1 is the system for TV set schematic diagram that comprises condition record device of the present invention;

Fig. 2-the 1st, recording parameters of the present invention are the schematic diagram that the one-level of resolution is recorded admin table;

Fig. 2-the 2nd, recording parameters of the present invention are the schematic diagram that the secondary of resolution is recorded admin table;

Fig. 2-the 3rd, recording parameters of the present invention are the schematic diagram that the one-level of the quantization parameter of encoder is recorded admin table;

Fig. 2-the 4th, recording parameters of the present invention are the schematic diagram that the secondary of the quantization parameter of encoder is recorded admin table;

Fig. 2-the 5th, recording parameters are the schematic diagram that the one-level of resolution and quantization parameter is recorded admin table;

Fig. 3-the 1st, recording parameters of the present invention are the schematic diagram of the preserved program admin table of resolution;

Fig. 3-the 2nd, recording parameters of the present invention are the schematic diagram of preserved program admin table of the quantization parameter of encoder;

Fig. 4 is a schematic diagram of recording confirmation of the present invention;

Fig. 5-the 1st, program category information schematic diagram of the present invention;

Fig. 5-the 2nd, the schematic diagram of resolution of program information of the present invention;

Fig. 6 is of the present invention＜embodiment 1〉method flow diagram;

Fig. 7 is of the present invention＜embodiment 2〉method flow diagram;

Fig. 8 is of the present invention＜embodiment 3〉method flow diagram;

Fig. 9 is of the present invention＜embodiment 4〉method flow diagram;

Figure 10 is of the present invention＜embodiment 5〉method flow diagram;

Figure 11 is of the present invention＜embodiment 7〉the method schematic diagram.

Embodiment

Below with reference to accompanying drawing, describe the specific embodiment of the present invention in detail:

Fig. 1 is the system for TV set schematic diagram that comprises condition record device of the present invention.As shown in the figure, television set can comprise receiving demodulation unit 101, is used for receiving broadcast signal, and through the demodulation output code flow; Code stream analysis unit 102 is used for extracting program category information and parameter information from code stream, and parameter information can be the quantization parameter of resolution parameter and encoder; Memory cell 103 is used for storing in advance and records admin table, and this is recorded admin table and has described various program categories and the default corresponding informance of recording parameter; CPU is used for retrieving recording admin table according to program sort information, records parameter and control store unit 103, user input unit 105, video converting unit 106, record cell 107 and signal separation unit 108 with what determine program; User input unit 104 is used for finishing management and the interpolation of user to recording admin table under the control of CPU 104; Video converting unit 106 is used under the control of CPU 104 program by recording parameter conversion; Record cell 107 is used under the control of CPU 104 recorded program to medium; Signal separation unit 108 is used for separating video signal and audio signal under the control of CPU 104; Video processing unit 109 is used for decoding video signal; Display unit 110 is used for display video signal; Audio treatment unit 111 is used for audio signal is shown; Loud speaker 112 is used for audio signal is converted to acoustical signal.

Fig. 2-the 1st, the one-level that is stored in recording parameters in the memory cell 103 in advance and is resolution is recorded admin table, this table has been described various types of program is recorded resolution with it corresponding relation, can be including, but not limited to programme variety 201 and the default resolution 202 of recording, default record resolution 202 can be various video formats such as HD, SD, CIF, QCIF, SQCIF, 0,＜blank etc.,＜blank is not recorded in 0 expression to such program〉represent such program is recorded according to original resolution.

Fig. 2-the 2nd, the secondary that is stored in recording parameters in the memory cell 103 in advance and is resolution is recorded admin table, this table has been described various types of program is recorded resolution with it corresponding relation, can be including, but not limited to programme variety 201 and the default resolution 202 of recording, programme variety information 201 comprises one-level program classification 201-1 and secondary program classification 201-2, presetting and record resolution 202 ' can be various video formats such as HD (HD), SD (standard definition format), CIF (resolution: 352 * 288), QCIF (resolution: 176 * 144), SQCIF (resolution: 128 * 96), 0,＜blank〉etc.,＜blank is not recorded in 0 expression to such program〉represent such program is recorded according to original resolution.

Fig. 2-the 3rd, the one-level that is stored in recording parameters in the memory cell 103 in advance and is quantization parameter is recorded admin table, this table has been described various types of program is recorded the quantization parameter of encoder with it corresponding relation, quantization parameter 204 can be expressed as " blank ", 0; " + x " etc.; blank represents to record according to the original quantization parameter of such program, and 0 expression is not recorded this program, "+x " represent to such program to be that quantization parameter is recorded with " original quantization parameter+x ".

Fig. 2-the 4th, the secondary that is stored in recording parameters in the memory cell 103 in advance and is quantization parameter is recorded admin table, this table has been described the corresponding relation of the quantization parameter of various types of program and its encoder, quantization parameter 204 can be expressed as " blank ", 0; " + x " etc.; blank represents to record according to the original quantization parameter of such program; 0 expression is not recorded this program; " + x " represent to such program to be that quantization parameter is recorded with " original quantization parameter+x ", other and the like.

Fig. 2-the 5th, the one-level that is stored in recording parameters in the memory cell 103 in advance and is resolution and quantization parameter is recorded admin table, and this table has been described various types of programs and its default corresponding relation of recording the quantization parameter of resolution, encoder.

Fig. 3-the 1st, recording parameters of the present invention are the schematic diagram of the preserved program admin table of resolution, this table has been described the rendition list of user's pre-recording, can be including, but not limited to the channel information 301 of preserved program, programm name 302, program start time 303, program end time 304, performance recording resolution 305.

Fig. 3-the 2nd, recording parameters of the present invention are the schematic diagram of preserved program admin table of the quantization parameter of encoder, this table has been described the rendition list of user's pre-recording, can be including, but not limited to the channel information 301 of preserved program, programm name 302, program start time 303, program end time 304, performance recording QP305 '.

Fig. 4 is a schematic diagram of recording confirmation of the present invention, and this figure is that television set sends an example recording confirmation to the user, can be including, but not limited to programm name, and Pgmtime, format, recorded file size, disk remaining space etc.

Fig. 5-the 1st, program category information schematic diagram of the present invention, this Figure illustrates the lookup method of programme variety information in Event Information Table EIT, the pid information 501 that comprises the EIT table, the table identifier 502 of EIT table, programme content descriptor content_descriptor 503, descriptor tag 504, one-level programme content classification content_nibble_level_1 505 and secondary programme content classification content_nibble_level_1 506.

Fig. 5-the 2nd, resolution of program information schematic diagram of the present invention, this Figure illustrates the lookup method of resolution of program information in Event Information Table EIT, comprise EIT target pid information 501, the table identifier 502 of EIT table, program components descriptor component_descriptor 507, descriptor tag 508, stream content stream_content 509, component type component_type510.

Fig. 6 is of the present invention＜embodiment 1〉method flow diagram.

Fig. 7 is of the present invention＜embodiment 2〉method flow diagram;

Fig. 8 is of the present invention＜embodiment 3〉method flow diagram;

Fig. 9 is of the present invention＜embodiment 4〉method flow diagram;

Figure 10 is of the present invention＜embodiment 5〉method flow diagram;

The present invention is explained in detail by five specific embodiments below in conjunction with accompanying drawing.

＜embodiment 1 〉

Present embodiment elaborates with reference to the situation that Fig. 6 records the television set condition of carrying out.

Television set receives broadcast singal by antenna, at first carries out modulation through receiving demodulation unit 101 and handles.Output code flow after the demodulation is imported into code stream analysis unit 102.Code stream analysis unit 102 extracts program category information from this code stream after receiving code stream.

Specifically, code stream analysis unit 102 intercepts existing transport stream Event Information Table EIT (Event Information Table) from code stream, and shown in Fig. 5-1, the PID 501 of EIT table is 0x0012, and form identifier 502 is 0x4E.Code stream analysis unit 502 extracts the content descriptors content_descriptor that describes program category information from existing transport stream Event Information Table, shown in Fig. 5-1, the form identifier 504 of content descriptors content_descriptor 503 is 0x54, and further the code stream analysis unit extracts one-level programme content classifier content_nibble_level_1 505 or secondary programme content classifier content_nibble_level_1 506 from content descriptors content_descriptor 503.The code stream analysis unit is sent to CPU 104 with one-level programme content classifier content_nibble_level_1 505 or the secondary programme content classifier content_nibble_level_1 506 that extracts.

506 inquiries are stored in and record admin table (Fig. 2) in the memory cell 103 CPU 104 in advance according to one-level programme content classifier 505 and secondary programme content classifier content_nibble_level_1.The programme variety of wherein recording admin table can be one-level programme variety and secondary programme variety, and recording parameters can be the quantization parameter of resolution or encoder.

If the programme variety 201 of a certain item during programme variety extract to be handled the programme content classifier that (603) extracts and recorded admin table is consistent, then corresponding current program records parameter and can determine.

CPU 104 starts 106 pairs of programs of video conversion unit according to recording parameter conversion, and the code stream after video converting unit 106 will be changed sends record cell 107 to.Record cell records code stream on the medium.

Television set carries out decoding work when judging performance recording resolution.Be that code stream analysis unit 102 is transferred to CPU 104 with the code stream that receives, CPU 104 sends the code stream that receives to signal separation unit 108.Vision signal in 108 pairs of code streams of signal separation unit is separated with audio signal, and sends video processing unit 109 and audio treatment unit 111 respectively to.Video processing unit 109 is sending display unit 110 to after the vision signal decoding, and display unit 110 shows vision signal.Audio treatment unit 111 sends loud speaker 112 to after to audio signal decoding, loud speaker 112 is converted to corresponding acoustical signal with audio signal.

＜embodiment 2 〉

Present embodiment just elaborates in the situation that broadcast program is recorded immediately to current television channel with reference to Fig. 7, and recording parameters is selected resolution in the present embodiment.

Television set receives broadcast singal by antenna, at first carries out modulation through receiving demodulation unit 101 and handles.After television set received record command, the output code flow after the demodulation was imported into code stream analysis unit 102, and CPU 104 startup record cells 107 write down current program according to original resolution simultaneously.Code stream analysis unit 102 extracts program category information and resolution information from this code stream after receiving code stream.

Specifically, code stream analysis unit 102 intercepts existing transport stream Event Information Table EIT (Event Information Table) from code stream, and shown in Fig. 5-1, the PID 501 of EIT table is 0x0012, and form identifier 502 is 0x4E.Code stream analysis unit 102 extracts the content descriptors content_descriptor that describes program category information and describes resolution of program information from existing transport stream Event Information Table component description symbol component_descriptor, shown in Fig. 5-1, the form identifier 704 of content descriptors content_descriptor 503 is 0x54, shown in Fig. 5-2, the form identifier 508 of component description symbol component_descriptor 507 is 0x50, further the code stream analysis unit extracts one-level programme content classifier content_nibble_level_1 505 or secondary programme content classifier content_nibble_level_1 506 from content descriptors content_descriptor 503, and extracts stream content stream_content509 and component type component_type 510 from component description symbol component_descriptor507.The code stream analysis unit is sent to CPU 104 with the one-level programme content classifier content_nibble_level_1 505 that extracts or secondary programme content classifier content_nibble_level_1 706 and component type component_type 510.

CPU 104 according to program category information inquiry record admin table (Fig. 2), the program category information of wherein recording in the admin table can be one-level (Fig. 2-1) or secondary (Fig. 2-2).

Shown in Fig. 2-1, when the programme variety of recording admin table is one-level, if the one-level programme content classifier 505 that programme variety extract to handle extracts with record admin table (Fig. 2) in programme variety 201 no consistent items, CPU 104 startup user input unit 105 and programme content classifier 505 is transferred to user input unit 105 then.User input unit request user imports recording resolution and upgrading and to record admin table of such program.

If the one-level programme content classifier 505 that programme variety extract to handle extracts is consistent with the programme variety 201 of a certain item in recording admin table (Fig. 2), then corresponding current program records resolution and can determine.In the present embodiment, if programme variety 201 is a film, can determine that then default resolution 202 is HD, corresponding 202 are labeled as HD; If programme variety 201 is physical culture, can determine that then default resolution 202 is SD, corresponding 202 are labeled as SD; If programme variety 201 is a news, can determine that then default resolution 202 is CIF, corresponding 202 are labeled as CIF; If programme variety 201 does not then carry out record for advertisement, corresponding 202 are labeled as 0; If programme variety 201 then carries out record according to original resolution to such program for recreation, corresponding 202 are labeled as＜blank 〉.

Shown in Fig. 2-2, when the programme variety of recording admin table is secondary, when one-level programme content classifier 505 that programme variety extract to handle extracts and secondary programme content classifier 506 with record admin table in a certain one-level programme variety 201-1 in consistent with secondary programme variety 201-2, then corresponding current program records resolution and can determine.If can not find consistent, then CPU 104 starts user input unit 105 and programme content classifier 505 is transferred to user input unit 105.User input unit request user imports recording resolution and upgrading and to record admin table of such program.

Further, CPU (104) is recorded component type 710 described resolution informations resolution and is compared with default, record resolution if the resolution that the component type component_type that resolution of program extraction processing (804) is extracted describes is less than or equal to preset, then 107 pairs of programs of record cell carry out record according to original resolution.

If resolution of program extracts the resolution of handling the component type component_type description of (804) extracting and records resolution greater than presetting, then CPU 104 stops the storage of 107 pairs of programs of record cell by original resolution, starts video converting unit 106 simultaneously program is converted to resolution for presetting the code stream of recording resolution.Code stream after video converting unit 106 will be changed sends record cell 107 to.Record cell records code stream on the medium.

＜embodiment 3 〉

Present embodiment just elaborates in the situation that broadcast program is recorded immediately to current television channel with reference to Fig. 8, and recording parameters is selected the quantization parameter QP of encoder in the present embodiment.

Television set receives broadcast singal by antenna, at first carries out modulation through receiving demodulation unit 101 and handles.After television set received record command, the output code flow after the demodulation was imported into code stream analysis unit 102, and CPU 104 startup record cells 107 write down current program according to original resolution simultaneously.Code stream analysis unit 102 extracts the quantization parameter QP of program category information and encoder from this code stream after receiving code stream, and the quantization parameter QP of program category information and encoder is passed to CPU 104.

CPU 104 according to program category information inquiry record admin table (Fig. 2), the program category information of wherein recording in the admin table can be one-level (Fig. 2-3) or secondary (Fig. 2-4).

Shown in Fig. 2-3, when the programme variety of recording admin table is one-level, if the one-level programme content classifier 505 that programme variety extract to handle extracts with record admin table (Fig. 2) in programme variety 201 no consistent items, CPU 104 startup user input unit 105 and programme content classifier 505 is transferred to user input unit 105 then.User input unit request user imports recording resolution and upgrading and to record admin table of such program.

If the one-level programme content classifier 505 that programme variety extract to handle extracts is consistent with the programme variety 201 of a certain item in recording admin table (Fig. 2), then corresponding current program records quantization parameter and can determine.In the present embodiment, if programme variety 201 is a film, then can determine to record quantization parameter 202 is former QP, and corresponding 202 are labeled as＜blank 〉; If programme variety 201 is physical culture, can determine that then default quantization parameter 202 is " former QP+x ", corresponding 202 are labeled as "+x "; If programme variety 201 is a news, can determine that then default quantization parameter 202 is " former QP+y ", corresponding 202 are labeled as "+y "; If programme variety 201 does not then carry out record for advertisement, corresponding 202 are labeled as 0.

Shown in Fig. 2-4, when the programme variety of recording admin table is secondary, when one-level programme content classifier 505 that programme variety extract to handle extracts and secondary programme content classifier 506 with record admin table in a certain one-level programme variety 204-1 in consistent with secondary programme variety 204-2, then corresponding current program records quantization parameter and can determine.If can not find consistent, then CPU 104 starts user input unit 105 and programme content classifier 505 is transferred to user input unit 105.User input unit request user imports recording quantization parameter and upgrading and to record admin table of such program.

CPU 104 stops the storage of 107 pairs of programs of record cell by original resolution, starts video converting unit 106 simultaneously, and program is converted to code stream according to quantization parameter for the mode of presetting quantization parameter.Code stream after video converting unit 106 will be changed sends record cell 107 to.Record cell records code stream on the medium.

＜embodiment 4 〉

Present embodiment elaborates to the situation that broadcast program carries out pre-recording with reference to Fig. 9, and recording parameters is selected resolution in the present embodiment.

Television set receives broadcast singal by antenna, at first carries out modulation through receiving demodulation unit 101 and handles.When television set receives after the user carries out the signal of pre-recording by EPG information to program, the output code flow after the demodulation is imported into code stream analysis unit 102.Code stream analysis unit 102 extracts program category information and resolution information and is transferred to CPU 104 after receiving code stream from this code stream.

CPU 104 according to programme variety information inquiry record admin table (Fig. 2-1 or Fig. 2-2), when for example current program category was news, CPU 104 found that corresponding default to record resolution be CIF.Then according to Pgmtime length with record resolution and calculate and to record the disk space S1 that these program needs take, and calculate the disk remaining space S ' that has recorded behind this program, send confirmation (Fig. 4) then to the user according to S1 and the existing space S of disk.Confirmation can comprise: programm name, program category, record resolution, record the disk space S1 that this program need take, disk remaining space S ' etc.

If the user is input as " Y ", then programme information is added pre-recording program table (Fig. 3-1), programme information can be including, but not limited to the channel information 301 of preserved program, programm name 302, program start time 303, program end time 304, performance recording resolution 305.

When CPU 104 detects that program start time is identical with the current time in the pre-recording program table (Fig. 3-1), start video converting unit 106, program is converted to code stream according to resolution for presetting the mode of recording resolution.Code stream after video converting unit 106 will be changed sends record cell 107 to.Record cell records code stream on the medium.

＜embodiment 5 〉

Present embodiment elaborates to the situation that broadcast program carries out pre-recording with reference to Fig. 9, and recording parameters is selected the quantization parameter of encoder in the present embodiment.

Television set receives broadcast singal by antenna, at first carries out modulation through receiving demodulation unit 101 and handles.When television set receives after the user carries out the signal of pre-recording by EPG information to program, the output code flow after the demodulation is imported into code stream analysis unit 102.Code stream analysis unit 102 extracts the quantization parameter of program category information and encoder and is transferred to CPU 104 after receiving code stream from this code stream.

CPU 104 according to programme variety information inquiry record admin table (Fig. 2-3 or Fig. 2-4), when for example current program category was news, CPU 104 found corresponding default quantization parameter and is " former QP+y ".Calculate according to Pgmtime length and quantization parameter then and record the disk space S1 that these program needs take, and calculate the disk remaining space S ' that has recorded behind this program, send confirmation (Fig. 4) then to the user according to S1 and the existing space S of disk.Confirmation can comprise: programm name, program category, record quantization parameter, record the disk space S1 that this program need take, disk remaining space S ' etc.

If the user is input as " Y ", then programme information is added pre-recording program table (Fig. 3-2), programme information can be including, but not limited to the channel information 301 of preserved program, programm name 302, program start time 303, program end time 304, performance recording quantization parameter 305.

When CPU 104 detects that program start time is identical with the current time in the pre-recording program table (Fig. 3-2), start video converting unit 106, program is converted to code stream according to quantization parameter for presetting the mode of recording quantization parameter.Code stream after video converting unit 106 will be changed sends record cell 107 to.Record cell records code stream on the medium.

＜embodiment 6 〉

Present embodiment just elaborates in the situation that broadcast program is recorded immediately to current television channel with reference to Figure 10, and recording parameters is selected resolution and quantization parameter in the present embodiment.

Television set receives broadcast singal by antenna, at first carries out modulation through receiving demodulation unit 101 and handles.After television set received record command, the output code flow after the demodulation was imported into code stream analysis unit 102, and CPU 104 startup record cells 107 write down current program according to original resolution simultaneously.Code stream analysis unit 102 extracts program category information, resolution information and quantization parameter from this code stream after receiving code stream.

CPU 104 according to program category information inquiry record admin table (Fig. 2-5), if the programme content classifier that programme variety extract to handle extracts is consistent with the programme variety 201 of a certain item in recording admin table, then corresponding current program records parameter and can determine.In this example, if programme variety 205 is a film, can determine that then default resolution 206 is HD, default quantization parameter is the former quantification parameter of program; If programme variety 205 is physical culture, can determine that then default resolution 206 is HD, default quantization parameter is " former QP+x "; If programme variety 205 is advertisement, then can determine not record of this program; If programme variety 205 then can be determined this program is carried out record by original resolution for recreation.

CPU 104 starts video converting unit 106, and program is converted to code stream according to resolution for the default mode of recording resolution.Code stream after video converting unit 106 will be changed sends record cell 107 to.Record cell records code stream on the medium.

＜embodiment 7 〉

Present embodiment with reference to Figure 11 right＜embodiment 1,＜embodiment 2 and＜embodiment 6 in the recording process recorded immediately described in detail:

Television set receives broadcast singal by antenna, at first carries out demodulation process through receiving demodulation unit 101.After television set receives record command, remember that this is t1 1101 (Figure 11-a) constantly, output code flow after the demodulation is imported into code stream analysis unit 102, simultaneously CPU 104 starts record cells 107 current program is recorded on the medium according to original resolution, and the program of remembering this partial record is P1 1103 (Figure 11-a).Code stream analysis unit 102 extracts program category information and parameter information from this code stream after receiving code stream.

CPU 104 is recorded admin table (Fig. 2) according to what the program category information inquiry was stored in 103 kinds of memory cell in advance.If it is consistent with a certain programme variety 201 in recording admin table that programme variety extracts the programme content classifier of handling extraction, then corresponding current program records parameter and can determine, if search less than consistent, then CPU 104 starts user input unit 105 and programme content classifier 505 is transferred to user input unit 105.User input unit request user imports recording resolution and upgrading and to record admin table of such program.The moment that note determines to record parameter is t2 1102 (Figure 11-a).

If it is identical with program initial parameter information to record parameter, then CPU 104 starts record cells 107 program is recorded on the medium according to initial parameter, and the program of remembering this partial record is P2 1104 (Figure 11-a).If it is different with program initial parameter information to record parameter, then CPU 104 starts video conversion unit 106, and according to recording parameter conversion, the code stream after video converting unit 106 will be changed sends record cell 107 to program.Record cell records code stream on the medium, and the program of this partial record is P2 1104 (Figure 11-b).After P2 section recording of programs finished, CPU 104 started video conversion unit 106, and (Figure 11-b) program is according to recording parameter conversion, and the code stream after video converting unit 106 will be changed sends record cell 107 to 1103 sections of P1.Record cell records code stream on the medium, and the program of this partial record is P1 ' 1105 (Figure 11-c).

The explanation of the disclosed embodiment that more than provides is to make any technical staff of this area can create and use the present invention.For those skilled in the art, the change of these embodiment is obvious, under the prerequisite that does not break away from the principle of the invention, can also make some improvement and wetting.Therefore, the embodiment shown in the present invention is not subject to here, but meet and principle disclosed herein and novelty the most wide consistent scope.

Claims

1. the device of a recorded announce program comprises:

User interaction unit is used to be provided with program recording management information, and described program recording management information comprises program sort information and the user recording parameters to should program category setting;

Memory cell is used to store described program recording management information;

Analytic unit is used for extracting program sort information from the transport stream of described broadcast program;

Record cell is used to write down described broadcast program;

Processing unit, in the described program recording management information of described cell stores, retrieval and the corresponding setting recording parameter of program sort information that described analytic unit extracts are controlled described record cell and are write down described broadcast program according to result for retrieval.

2. device as claimed in claim 1 is characterized in that, described user interaction unit also receives the preserved program management information that the user is provided with, and described preserved program management information comprises channel designation, programm name, program start time and program end time;

Described memory cell is also stored described preserved program management information;

Described processing unit also detects current programm name and current time, in the described preserved program management information that retrieves described cell stores, exist programm name identical with current programm name, and during the program start time preserved program management information identical with the current time, retrieval and the corresponding setting recording parameter of program sort information that described analytic unit extracts are controlled described record cell and are write down described broadcast program according to result for retrieval from the program recording management information of described cell stores.

3. the device of recorded announce program as claimed in claim 1 or 2 is characterized in that

In the described program recording management information of described processing unit in described cell stores, when retrieving the setting recording parameter corresponding with the program sort information of described analytic unit extraction, described processing unit is controlled described record cell according to the described described broadcast program of setting recording reference record that retrieves.

4. the device of recorded announce program as claimed in claim 1 or 2 is characterized in that

When can not retrieving the setting recording parameter corresponding in the described program recording management information of described processing unit in described cell stores with the program sort information of described analytic unit extraction, described processing unit is controlled the recording parameters that described user interaction unit request user sets this program category, control described record cell and write down described broadcast program, control described memory cell this program sort information and user are stored in the described program recording management information the recording parameters of should program category setting according to the recording parameters that the user sets.

5. the device of a recorded announce program comprises:

Memory cell is used to store described program recording management information and broadcast program;

Processing unit, in the described program recording management information of described cell stores, retrieval and the corresponding setting recording parameter of program sort information that described analytic unit extracts are controlled described memory cell and are write down described broadcast program according to result for retrieval.

6. device as claimed in claim 5 is characterized in that, described user interaction unit also receives the preserved program management information that the user is provided with, and described preserved program management information comprises channel designation, programm name, program start time and program end time;

Described processing unit also detects current programm name and current time, in the described preserved program management information that retrieves described cell stores, exist programm name identical with current programm name, and during the program start time preserved program management information identical with the current time, retrieval and the corresponding setting recording parameter of program sort information that described analytic unit extracts are controlled described memory cell and are write down described broadcast program according to result for retrieval from the program recording management information of described cell stores.

7. as the device of claim 5 or 6 described recorded announce programs, it is characterized in that

In the described program recording management information of described processing unit in described cell stores, when retrieving the setting recording parameter corresponding with the program sort information of described analytic unit extraction, described processing unit is controlled described memory cell according to the described described broadcast program of setting recording reference record that retrieves.

8. as the device of claim 5 or 6 described recorded announce programs, it is characterized in that

When can not retrieving the setting recording parameter corresponding in the described program recording management information of described processing unit in described cell stores with the program sort information of described analytic unit extraction, described processing unit is controlled the recording parameters that described user interaction unit request user sets this program category, control described memory cell and write down described broadcast program, control described memory cell this program sort information and user are stored in the described program recording management information the recording parameters of should program category setting according to the recording parameters that the user sets.

9. the device of a recorded announce program comprises:

Analytic unit is used for extracting program sort information and current record parameter information from the transport stream of described broadcast program;

Record cell is used to write down described broadcast program;

Processing unit, in the described program recording management information of described cell stores, retrieval and the corresponding setting recording parameter of program sort information that described analytic unit extracts are controlled described record cell and are write down described broadcast program according to the memory space junior that takies in the current record parameter of the setting recording parameter of described retrieval and the extraction of described analytic unit.

10. device as claimed in claim 9 is characterized in that,

Described user interaction unit also receives the preserved program management information that the user is provided with, and described preserved program management information comprises channel designation, programm name, program start time and program end time;

Described processing unit also detects current programm name and current time, in the described preserved program management information that retrieves described cell stores, exist programm name identical with current programm name, and during the program start time preserved program management information identical with the current time, the corresponding setting recording parameter of program sort information that retrieval and described analytic unit extract from the program recording management information of described cell stores is controlled described record cell and is write down described broadcast program according to the memory space junior that takies in the current record parameter of described setting recording parameter that retrieves and the extraction of described analytic unit.

11. the device of a recorded announce program comprises:

Record cell is used to write down described broadcast program;

Processing unit, in the described program recording management information of described cell stores, retrieval is less than the corresponding setting recording parameter of program sort information that extracts with described analytic unit, described processing unit is controlled the recording parameters that described user interaction unit request user sets this program category, and the memory space junior that takies who controls in the current record parameter that recording parameters that described record cell sets according to described user and described analytic unit extract writes down described broadcast program.

12. device as claimed in claim 11 is characterized in that

Described processing unit also detects current programm name and current time, in the described preserved program management information that retrieves described cell stores, exist programm name identical with current programm name, and during the program start time preserved program management information identical with the current time, in the described program recording management information of described cell stores, retrieval is less than the corresponding setting recording parameter of program sort information that extracts with described analytic unit, described processing unit is controlled the recording parameters that described user interaction unit request user sets this program category, and the memory space junior that takies who controls in the current record parameter that recording parameters that described record cell sets according to described user and described analytic unit extract writes down described broadcast program.

13. any one the described device as in the claim 1,5,9 or 11 is characterized in that, only when described user interaction unit received user's record command, described processing unit was carried out retrieval.

14. any one the described device as in the claim 1,5,9 or 11 is characterized in that described recording parameters is resolution or quantization parameter.

15. the recording method of a broadcast program comprises:

The user interactions that program recording management information is set by user interaction unit is provided with operation, and described program recording management information comprises program sort information and the user recording parameters to should program category setting;

Analysis procedure extracts program sort information from the transport stream of described broadcast program; With

Treatment process from the program recording management information that is stored in memory cell, is retrieved the setting recording parameter corresponding with the program sort information of described extraction, the controlling recording unit according to result for retrieval with described broadcast program record in addition.

16. method as claimed in claim 15, it is characterized in that, described user interactions is provided with operation and also comprises the step that preserved program management information is set, and described preserved program management information comprises channel designation, programm name, program start time and program end time;

And described preserved program management information is stored in described memory cell;

Described treatment process also comprises current programm name of detection and the step of current time,

In the described preserved program management information that retrieves described cell stores, exist programm name identical with current programm name, and during the program start time preserved program management information identical with the current time, retrieval and the corresponding setting recording parameter of program sort information that described analytic unit extracts are controlled described record cell and are write down described broadcast program according to result for retrieval from the program recording management information of described cell stores.

17. the recording method as claim 15 or 16 described broadcast programs is characterized in that

In described program recording management information in described cell stores, when retrieving the setting recording parameter corresponding with the program sort information that extracts in the described analysis procedure, the described record cell of control is according to the described described broadcast program of setting recording reference record that retrieves in described treatment process.

18. the recording method of broadcast program as claimed in claim 1 or 2 is characterized in that

When can not retrieving the setting recording parameter corresponding in the described program recording management information in described cell stores with the program sort information that is extracted, control the recording parameters that described user interaction unit request user sets this program category in described treatment process, control described record cell and write down described broadcast program, control described memory cell this program sort information and user are stored in the described program recording management information the recording parameters of should program category setting according to the recording parameters that the user sets.

19. the recording method of a broadcast program comprises:

By user interaction unit the user interactions operation of program recording management information is set, described program recording management information comprises program sort information and the user recording parameters to should program category setting;

Analysis procedure extracts program sort information from the transport stream of described broadcast program;

Treatment process from the program recording management information that is stored in memory cell, is retrieved the setting recording parameter corresponding with the program sort information that is extracted, and controls described memory cell and writes down described broadcast program according to result for retrieval.

20. the recording method of a broadcast program comprises:

Analysis procedure extracts program sort information and current record parameter information from the transport stream of described broadcast program;

Treatment process, from the program recording management information of cell stores, retrieve the setting recording parameter corresponding with the program sort information that is extracted, the controlling recording unit writes down described broadcast program according to the memory space junior that takies in the setting recording parameter of described retrieval and the current record parameter that extracted.

21. the recording method of a broadcast program comprises:

The user that program recording management information is set by user interaction unit is provided with operation, and described program recording management information comprises program sort information and the user recording parameters to should program category setting;

Treatment process, in the described program recording management information of cell stores, retrieval is less than the corresponding setting recording parameter of program sort information that extracts with described analytic unit, control the recording parameters that described user interaction unit request user sets this program category, the memory space junior that takies in the current record parameter that recording parameters that the controlling recording unit is set according to described user and described analytic unit extract writes down described broadcast program.