WO2003096691A1 - Dispositif et procede de traitement des signaux, programme et support d'enregistrement - Google Patents
Dispositif et procede de traitement des signaux, programme et support d'enregistrement Download PDFInfo
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- WO2003096691A1 WO2003096691A1 PCT/JP2003/005564 JP0305564W WO03096691A1 WO 2003096691 A1 WO2003096691 A1 WO 2003096691A1 JP 0305564 W JP0305564 W JP 0305564W WO 03096691 A1 WO03096691 A1 WO 03096691A1
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- time code
- frame rate
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- 238000003672 processing method Methods 0.000 title claims description 9
- 238000006243 chemical reaction Methods 0.000 claims abstract description 161
- 238000004364 calculation method Methods 0.000 claims description 27
- 230000008859 change Effects 0.000 claims description 27
- 238000001514 detection method Methods 0.000 claims description 14
- 241000282326 Felis catus Species 0.000 claims 1
- 230000015572 biosynthetic process Effects 0.000 abstract description 4
- 238000003786 synthesis reaction Methods 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 22
- 238000000034 method Methods 0.000 description 18
- 230000008569 process Effects 0.000 description 9
- 230000002194 synthesizing effect Effects 0.000 description 5
- 238000013500 data storage Methods 0.000 description 4
- 230000002441 reversible effect Effects 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 3
- 238000003780 insertion Methods 0.000 description 2
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Classifications
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
- G11B27/10—Indexing; Addressing; Timing or synchronising; Measuring tape travel
- G11B27/19—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier
- G11B27/28—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording
- G11B27/30—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording on the same track as the main recording
- G11B27/3027—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording on the same track as the main recording used signal is digitally coded
- G11B27/3036—Time code signal
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
- G11B27/02—Editing, e.g. varying the order of information signals recorded on, or reproduced from, record carriers
- G11B27/022—Electronic editing of analogue information signals, e.g. audio or video signals
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
- G11B27/02—Editing, e.g. varying the order of information signals recorded on, or reproduced from, record carriers
- G11B27/031—Electronic editing of digitised analogue information signals, e.g. audio or video signals
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/01—Conversion of standards, e.g. involving analogue television standards or digital television standards processed at pixel level
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B2220/00—Record carriers by type
- G11B2220/90—Tape-like record carriers
Definitions
- the present invention relates to a signal processing device, a signal processing method, a program, and a recording medium used when converting a frame rate.
- the frame length is not changed before and after the conversion because the frame input and output are not thinned out and the number of frames is not changed before and after the conversion.
- a system has been proposed that realizes smooth 1-2.5-speed playback by converting video shot at a frame rate of 60 frames / second to 24 frames / second. .
- variable-speed frame-rate photographing camera that allows a photographer to freely change the frame rate during photographing. For example, in a video shot by such a variable frame rate camera, one scene is recorded at 60 frame seconds, and another scene is recorded at 12 frame seconds.
- converting the frame rate changes the number of frames displayed per second, so it is essential to convert the timecode.
- a frame with a time code of 01: 15: 24: 30 in a 60-frame / second video can be converted to a 24-frame Z-second video by a conversion method that does not change the length of the video before and after conversion. If performed, a time code of 01: 15: 24: 12 is attached (because 3 frames are thinned out every 5 frames).
- the video captured at a variable frame rate is converted to a frame rate and the output video is used as a video material for editing, it is desirable to convert only the necessary sections. Obvious when editing
- the present invention has been made in consideration of the above-described conventional problems, and provides a signal processing apparatus, a signal processing method, a program, and a recording medium that can automatically attach a converted time code to a video after frame rate conversion. It is intended to provide
- the first aspect of the present invention relates to a video signal having an input time code, which is generated using a changing or non-changing frame rate input from the outside, for all or one or more sections.
- Frame rate information conversion means for converting frame rate information relating to a frame rate; and an output time code to be replaced with the input time code for all or one or more sections in which the conversion of the frame rate information has been performed.
- An output time code calculating means for calculating one time
- An output time code assigning means for assigning the calculated output time code to a number of sections.
- the conversion of the frame rate information is performed such that the number of frames of the video signal is not changed before and after the conversion of the frame rate information for the section of the video signal.
- 4 is a signal processing device according to the invention.
- the third aspect of the present invention further comprises an input time code content detecting means for detecting the content of the input time code for the entire or one or more sections,
- the signal processing device according to the first aspect of the present invention, wherein the calculation of the output time code is performed in consideration of a detection result of the content of the input time code.
- the output time code given to the section is: the output catalog code given to a start frame at which the section is started is detected with respect to the start frame.
- a signal processing apparatus according to a third aspect of the present invention, which is calculated so as to substantially coincide with the input time code.
- a fifth invention is the signal processing apparatus according to the fourth invention, further comprising output time code adjusting means for adjusting the output time code given to the start frame.
- the output time code assigned to a predetermined section of the plurality of sections is: A signal processing apparatus according to a first aspect of the present invention, wherein the signal is calculated so as to be continuous with the provided output time code.
- the output time code given to the one or more sections is assigned to a virtual section from a predetermined reference frame to a start frame at which the section starts.
- a signal processing apparatus according to a first aspect of the present invention, which is calculated so as to be continuous with the output time code.
- the output time code to be assigned to the singular or plural sections is the output time code to be collectively assigned to a virtual section including the singular or plural sections.
- 1 is a signal processing apparatus according to a first aspect of the present invention, which is calculated so as to substantially match with FIG.
- an input time code predetermined bit for storing the detected input time code in a predetermined bit for all or one or a plurality of sections where the conversion of the frame rate information is performed.
- a signal processing device according to a first aspect of the present invention, further comprising storage means.
- the video signal input from the outside is generated using a changing frame rate
- a frame rate change detection unit that detects a change in the frame rate with respect to the video signal input from the outside;
- the signal processing device according to the first aspect of the present invention, wherein the calculation of the output time code is performed in consideration of the detection result of the change in the frame rate.
- the output time code is calculated so as to have a one-to-one correspondence with the input time code
- a tenth aspect of the present invention is a signal processing apparatus according to the present invention, further comprising an input time code back calculation means for back calculating the input time code from the output time code based on the one-to-one correspondence.
- a frame is provided for all or a single or a plurality of sections of a video signal having an input time code, which is generated using an externally input, changing or non-changing frame rate.
- a frame rate information conversion step for converting frame rate information relating to the rate;
- An output time code calculation step of calculating an output format code to be replaced with the input time code for all or one or more sections in which the conversion of the frame rate information has been performed;
- a video signal having an input time code which is generated by using the externally input, changing or non-changing frame rate of the signal processing method according to the second aspect of the present invention.
- a frame rate information conversion step for converting frame rate information relating to a frame rate for all or one or a plurality of sections of a signal; and all or one or more of the frames obtained by converting the frame rate information
- An output time code calculating step for calculating an output time code to be replaced with the input time code for the section; and for all or one or a plurality of sections where the conversion of the frame rate information has been performed,
- a fifteenth aspect of the present invention is a recording medium that carries the program of the thirteenth aspect of the present invention, and is a recording medium that can be processed by a computer.
- FIG. 1 is a configuration diagram of a frame rate conversion device according to Embodiment 1 of the present invention.
- FIG. 2 is a configuration diagram of the frame rate conversion device according to the embodiment of the present invention.
- FIG. 3 is a configuration diagram of a frame rate conversion device according to Embodiment 7 of the present invention.
- FIG. 4 is a configuration diagram of a frame rate conversion device according to the eighth embodiment of the present invention.
- FIG. 5 is an explanatory diagram of time code conversion according to the first embodiment of the present invention.
- FIG. 6 is an explanatory diagram of time code conversion according to the second embodiment of the present invention.
- FIG. 7 is an explanatory diagram of time code conversion according to the third embodiment of the present invention.
- FIG. 8 is an explanatory diagram of time code conversion according to the fourth embodiment of the present invention.
- FIG. 9 is an explanatory diagram of time code conversion according to the fifth embodiment of the present invention.
- FIG. 10 is an explanatory diagram of the time code conversion according to the sixth embodiment of the present invention c .
- FIG. 11 is an explanatory diagram of the time code conversion according to the eighth embodiment of the present invention c
- FIG. 1 is a configuration diagram of the frame rate conversion device of the first embodiment of the present invention.
- the frame rate conversion ⁇ 101 is means for performing a frame rate conversion of an input video (that is, performing conversion of frame rate information written in a header portion of the input video).
- the time code synthesizing unit 102 is means for replacing the time code in the input video with the time code in the output video.
- the time code detection unit 103 is a means for detecting a time code (input time code) from an input video with a time code.
- the time code calculation unit 104 calculates the time code (output time code) of the output video using the detected time code of the input video, the frame rate of the input video, the frame rate of the output video, and the like. It is a means for.
- the time code calculation section 104 processes the time code of the conversion start point in the input video in the output video. Processing for adopting the time code of the conversion start point is performed.
- the time code calculation section 104 determines the time code of the start point of the conversion in the output video, and sequentially increments the time code so as to be linked with the output video.
- the frame rate conversion unit 101 corresponds to the frame rate information conversion unit of the present invention
- the time code calculation unit 104 corresponds to the output time code calculation unit of the present invention
- the time code synthesis unit 100 2 corresponds to the output time code adding means of the present invention.
- the time code detecting section 103 corresponds to the input time code content detecting means of the present invention.
- the frame rate conversion device of the present embodiment corresponds to the signal processing device of the present invention.
- FIG. 5 is an explanatory diagram of the time code conversion according to the first embodiment of the present invention
- the frame rate conversion device according to the present embodiment will be described. The operation will be described. Note that while describing the operation of the frame rate conversion device of the present embodiment, one embodiment of the signal processing method of the present invention will also be described (the same applies to other embodiments).
- the playback time of a 24 fps video is 1.25 times longer than the playback time of a 30 fps video.
- the length of the section ⁇ ⁇ ⁇ ⁇ in the output video is 1.25 times 00: 04: 00: 00, and is 00: 05: 00: 00: 00.
- the length of the section 2 in the output video is 1.25 times 00: 06: 00: 00: 00 and is 0: 0: 07: 00: 00.
- the time code of the section ⁇ ⁇ ⁇ ⁇ in the output video is from 00: 04: 00: 00 to 00: 09: 00: 00.
- time code of the section 2 in the output video is 00: 16: 00: 00 to 00: 23: 30: 00.
- the time code in the output video Although it depends on the conversion section, there is an advantage that the time code in the input video can be easily inferred from the time code in the output video, and it is easy for the user to intuitively understand.
- time code of the start point of section ⁇ ⁇ ⁇ ⁇ in the input video is 00: 03: 59: 29, which is one frame earlier
- the time code 00: 0: 3: 59: 29 is the frame rate.
- Cannot be used as time code in the output video because it does not exist in video with 24 frames per second.
- Such a time code that cannot be used as a time code in the output video may be corrected by rounding 00 or the like so that an applicable time code is obtained.
- time code at the start point is any of 00: 0 03:59:24, 00: 0 03:59:25, ..., 00: 0 03:59:28
- the 00 is rounded so that the time code at the start point is 00: 0: 3: 59: 00.
- the time code whose last two digits are 00 matches the beginning of the 2: 3: 2: 3 timing.
- the frame display part (the last two digits described above) is rounded to match the A frame of 24 P (24 progressive), so that the time code ab: cd: ef: gh
- FIG. 2 is a configuration diagram of the frame rate conversion device according to the embodiment of the present invention, a mechanism that allows an external input by a user may be used.
- Such a frame rate conversion device has a configuration similar to that of the frame rate conversion device of the present embodiment (see FIG. 1) (methods having the same names have the same functions, the same applies hereinafter).
- a time code input section 205 is provided for a user to manually input a time code to be adopted as a time code at a conversion start point in an output video.
- the frame rate conversion unit 201 corresponds to the frame rate information conversion unit of the present invention
- the time code calculation unit 204 corresponds to the output time code calculation unit of the present invention
- the time code synthesis unit 202 Corresponds to the output time code adding means of the present invention.
- the time code detecting section 203 corresponds to the input time code content detecting means of the present invention.
- the time code input section 205 corresponds to the output time code adjusting means of the present invention.
- the frame rate conversion device of the present embodiment corresponds to the signal processing device of the present invention.
- the user can fine-tune the time code of the start point of the conversion in the output video.
- the configuration of the frame rate conversion device of the present embodiment is similar to the configuration of the frame rate conversion device of the first embodiment described above.
- the feature of this embodiment is that the time code is calculated so that the time code in the output video is continuous.
- an internal counter is implemented in the time code calculation unit so that the time code in the output video is continuous in the order of conversion, and the processing of the output video is performed by the time code calculation unit. Processing for resetting the time code at the start point is performed.
- FIG. 6 is an explanatory diagram of time code conversion according to the second embodiment of the present invention.
- the length of the section ⁇ ⁇ ⁇ ⁇ in the output video is 00: 05: 00: 00: 00
- the length of the section ⁇ ⁇ ⁇ ⁇ in the output video is 00: 07: 30: 00.
- the start time code of section 1 is 00: 00: 00: 00: 00: 00, and section 1,
- the time code of section 1 in the output video is from 00: 00: 00: 00 to 00: 05: 00: 00: 00
- the time code of section 2 in the output video is 00: 05: 00: 00: 0 : 1: 2: 30: 0
- the configuration of the frame rate conversion device of the present embodiment is similar to the configuration of the frame rate conversion device of the first embodiment described above.
- the feature of this embodiment lies in that a reference frame called a sync point (synchronization point) is provided in the following and the time code is calculated.
- C it is added to one or more sections to be converted.
- the output time code to be output is continuous with the output time code to be assigned to a virtual section from a predetermined sync point (reference frame) to the start point (start frame) at which each of these sections starts. So that is calculated.
- the output time code given to one or more sections to be converted includes these one or more sections It is calculated so that it matches the output time code that should be given to the virtual section collectively.
- the number of frames from the sync point to the time code of the conversion start point in the input video is calculated in consideration of the frame rate of the input video
- the calculated number of frames is converted into a time code in consideration of the frame rate of the output video.
- the time code of the conversion start point in the output video is calculated by adding the time code of the sync point.
- the time code TO of the starting point of the conversion in the output video is calculated so that Here, the value on the left is the number of frames from the sync point to the start of conversion in the input video, and the value on the right is the number of frames from the sync point to the start of conversion in the output video.
- T.I is the time code of the conversion start point in the input video
- TO is the time code of the conversion start point in the output video
- TS is the time code of the sync point
- FRI is the time code of the input video.
- F RO is the frame rate of the output video.
- FIG. 7 is an explanatory diagram of time code conversion according to the third embodiment of the present invention.
- a sync point is a point where the time code in the input video and the time code in the output video are in sync.
- the time code of the section ⁇ ⁇ ⁇ ⁇ in the output video is 00: 05: 00: 00: 00 and 00:10:00: 00: up to 00.
- the time code of the section ⁇ ⁇ ⁇ ⁇ in the output video is from 00: 20: 00: 00: 00 to 00: 27: 30: 00.
- the output time code given to the section 1 is set to correspond to the virtual section I1 from 00: 00: 00: 00 to 00: 04: 00: 00. It is calculated so as to be continuous with the output time code to be given.
- the output time code given to section 2 is the output time code to be given to virtual section I2 from 00:00:00 to 00:00:00 to 00: 06: 00: 00: 00. Is calculated to be continuous.
- the output time code assigned to the sections I and II is, for example, 00: 00: 00: 00: 00 to 00 ⁇ 30: 00: 00 for the virtual section I. It is calculated to match the output time code that should be given collectively.
- the time code before conversion and the time code after conversion are one-to-one, and the time code in the input video can be calculated backward from the time code in the output video (reverse lookup processing).
- the uniqueness of the output time code is guaranteed (when the input video is a video with a constant frame rate), and the input time code can be easily obtained from the output time code. I can do it.
- the configuration of the frame rate conversion device of the present embodiment is similar to the configuration of the frame rate conversion device of the first embodiment described above.
- the feature of the present embodiment is that the input video is a variable speed frame rate video (not a video of a constant frame rate).
- FIG. 8 is an explanatory diagram of time code conversion according to the fourth embodiment of the present invention.
- variable frame rate video is converted to a video of 24 frames / second.
- variable speed frame rate image is shot from 00: 00: 00: 00: 00 to 00: 12: 00: 00: 00 in 30 frames Z seconds, and from 00: 12: 00: 00: 00.
- a case where the video is shot at 12 frames / second will be described.
- the sections 1 and 2 are the sections in Embodiment 1 described above.
- the playback time of a 24-frame Z-second video is 1.25 times longer than the playback time of a 30-frame no-second video, but is halved compared to the playback time of a 12-frame / second video. .
- the length of the section 1 in the output video is 1.25 times 00: 04: 00: 0 00, and is 00: 05: 00: 00.
- the length of the section ⁇ ⁇ ⁇ ⁇ in the output video is half of 0: 06: 00: 00: 00, and is 00: 03: 00: 00: 00.
- the time code of the section ⁇ ⁇ ⁇ ⁇ in the output video is from 00: 04: 00: 00 to 00: 009: 00: 00.
- the time code of the section ⁇ ⁇ ⁇ ⁇ in the output video is 00: 16: 00: 00: 00 to 00: 19: 00: 00: 00.
- the time code conversion described above is different from that of the first embodiment described above. Similarly, although the time code of the output video depends on the conversion section, there is an advantage that the time code of the input video can be easily inferred from the time code of the output video, so that it is intuitive for the user.
- the configuration of the frame rate conversion device of the present embodiment is similar to the configuration of the frame rate conversion device of Embodiment 1 described above.
- This embodiment is characterized in that the input video is a variable frame rate video as in the above-described fourth embodiment, and that the time code in the output video is continuous as in the above-described second embodiment. The point is that the time code is calculated at the same time.
- FIG. 9 is an explanatory diagram of time code conversion according to the fifth embodiment of the present invention.
- 00: 12: 00: 00 and later (video shot at 12 frames Z seconds) is converted to 24 frames Z seconds video will be described.
- the length of the section ⁇ ⁇ ⁇ ⁇ in the output video is 00: 05.5: 0 00:00
- the length of the section ⁇ ⁇ ⁇ ⁇ in the output video is 00: 03.3: 00: 00.
- the start time code of section 1 is 00: 00: 00: 00: 00, and section 1,
- the time code of section 1 in the output video is 00:00:00 : 00: 00: 05: 00: 00
- the time code of the section ⁇ ⁇ ⁇ in the output video is from 00: 00: 5: 00: 00 to 00: 08: 00: 00.
- the configuration of the frame rate conversion device of the present embodiment is similar to the configuration of the frame rate conversion device of Embodiment 1 described above.
- This embodiment is characterized in that the input video is a variable-rate frame rate video as in the above-described fourth embodiment, and that a sync point (synchronization point) is provided as in the above-described third embodiment. Time code is calculated
- FIG. 10 is an explanatory diagram of time code conversion according to the sixth embodiment of the present invention.
- variable-speed frame rate video (00: 00: 00: 00: 00: 00 to 00: 12: 00: 00: 00 takes 30 frames Z seconds).
- a video shot and a video shot at 00: 12: 00: 00: 00 and after 12 frames Z seconds is converted to a video of 24 frames / second.
- the time code of the section ⁇ ⁇ ⁇ ⁇ in the output video is C is from 0: 0: 5: 00: 00 to 00: 10: 00: 00: 00: 00 c
- this frame at the 115th frame from the sync point has a time code of 0: 0: 08: 0: 0: 0.
- the time code of the section ⁇ ⁇ ⁇ ⁇ in the output video is 0 0: 08: 00: 0 0 Up to 0 0: 1 1: 0 0: 0 0.
- the output time code given to the section 1 is 0: 00: 0: 0: 0: 0, etc., for the virtual section I 1 up to 00: 04: 00: 00. It is calculated to be continuous with the output time code to be given.
- the output time code given to section 2 should be given to virtual section I 2 from 0 0: 0 0: 0 0: 0 0 to 00: 16: 00: 0 0 Calculated to be continuous with the output time code.
- the frame rate of the input video at the starting point of the conversion is used for such calculation.
- the time code of the input video can be calculated backward from the time code of the output video.
- the input video is a variable-rate frame rate video (rather than a video with a constant frame rate)
- the time code before conversion and the time code after conversion are one-to-many (instead of one-to-one). ing.
- the interval 1 and the interval ⁇ are defined as the interval from 0: 08: 00: 0: 00 to 0: 0: 10: 00: 0: 00. Has been duplicated.
- the input time code can be calculated backward from the output time code, but the uniqueness of the output time code is not guaranteed.
- the input time code can be easily obtained from the output time code even when the input video is a variable speed frame rate video.
- FIG. 3 is a configuration diagram of the frame rate conversion device according to the seventh embodiment of the present invention.
- the configuration of the frame rate conversion device of the present embodiment is similar to the configuration of the frame rate conversion device of the first embodiment described above.
- the feature of this embodiment is that the time code in the input video is written in the user's bit in the output video.
- the time code in the input video detected by the time code detecting unit 304 is stored in the user's bit in the output video by the user's bit synthesizing unit 303.
- the frame rate conversion device of the present embodiment is the same as that of the first embodiment described above.
- a user's bit synthesizing unit 303 that rewrites the user bits in the output video using the time code in the input video detected by the time code detecting unit 304 is added. Configuration.
- the frame rate conversion section 310 corresponds to the frame rate information conversion means of the present invention
- the time code calculation section 350 corresponds to the output time code calculation means of the present invention
- the time code synthesis section 310 2 corresponds to the output time code adding means of the present invention.
- the time code detecting section 304 corresponds to the input time code content detecting means of the present invention.
- the user's bit synthesizing section 303 corresponds to the input time code predetermined bit storage means of the present invention.
- the frame rate conversion device of the present embodiment corresponds to the signal processing device of the present invention.
- the time code of the conversion start point in the input video is matched with the time code of the conversion start point in the output video (see Embodiments 2 and 5 above), and a sync point is provided (see the above-described embodiment).
- the time code of the conversion start point in the output video, the frame rate of the input video, and the frame rate of the output video are used to convert the time code in the output video into the time code in the input video. It is possible to calculate (reverse processing).
- FIG. 4 is a configuration diagram of the frame rate conversion device according to the eighth embodiment of the present invention.
- the frame rate change point detection unit 406 inputs the time code detected by the time code detection unit 403 and the frame rate of the input image detected by the frame rate detection unit 405, and calculates the frame rate of the input video. It is a means for recognizing changes in
- the frame rate change point data storage section 407 stores the time code detected by the time code detection section 403 and the frame rate detection section 405 when the change of the frame rate of the input video is recognized. This is a means for storing the detected frame rate of the input video as frame rate change point data.
- the input section calculation unit 409 performs conversion of the corresponding input video using the output section specified by the output section specification unit 408 and the above-mentioned frame rate change point data according to the user's instruction. This is a means for calculating the input interval.
- the input video selection unit 400 is means for extracting a section corresponding to the input section in which the input video has been converted, from the input video input.
- the frame rate conversion section 401 is means for performing frame rate conversion on a section taken out of the input video.
- the time code synthesizing section 402 is a means for replacing the time code in the output video having undergone the frame rate conversion.
- the frame rate conversion unit 401 converts the frame rate information of the present invention.
- the time code calculator 404 corresponds to the output time code calculator of the present invention, and the time code synthesizer 402 corresponds to the output time code assigner of the present invention.
- the time code detecting section 403 corresponds to the input time code content detecting means of the present invention.
- the frame rate change point detecting section 406 corresponds to the frame rate change detecting means of the present invention, and the input section calculating section 409 corresponds to the input time code reverse calculating means of the present invention.
- the frame rate conversion device of the present embodiment corresponds to the signal processing device of the present invention.
- FIG. 11 is an explanatory diagram of time code conversion according to the eighth embodiment of the present invention.
- the output time code assigned to one or more sections to be converted is the output time code to be assigned collectively to the virtual section including the single or multiple sections. Calculated to match timecode.
- the number of frames from the sync point is calculated by taking the cumulative number of frames.
- the frame rate change point detection unit 406 sends the frame rate change point data ⁇ 30 frames / second, 00: 00: 00: 00 ⁇ to the frame rate change point data storage unit 407.
- the frame rate change point detection unit 406 when it is detected that the frame rate has been switched from 30 frame nos to 12 frames / sec at 00: 12: 00: 00: 00, changes the frame rate.
- the point data ⁇ 12 frame Z seconds, 00: 12: 00: 00: 00 ⁇ is sent to the frame rate change point data storage unit 407.
- a pair of a frame rate and a time code is stored as frame change point data by the frame rate change point data storage unit 407.
- the time code calculation unit 404 calculates a time code using the frame rate change point data described above.
- the time code of the section ⁇ ⁇ ⁇ ⁇ in the output video is from 0 c : 0 5: 0 0: 0 0 to 0 0: 10 0: 00 0: 0.
- This number of frames is 0 0: 17: 0 0: 00 when converted for 24 frames per second.
- the length of the section ⁇ ⁇ ⁇ ⁇ in the output video is 00: 03: 00: 00, as described in the fourth embodiment. ,
- the output video in the section 2 is from 0: 17: 00: 00 to 00: 20: 00: 00.
- the output time code given to the sections 1 and 2 is, for example, a virtual section from 0 0: 0 0: 0 0: 0 0 to 0 0: 3 0: 0 0: 0 0. Calculated to match the output timecode that should be given to I collectively.
- the input section calculator 409 calculates the input time code from the output time code using the frame rate change point data.
- the time code of the start point of section 2 in the input video does not fall within the range of the section in which the frame rate of the input video is 30 frame nosec.
- the time code of the start point of the section ⁇ ⁇ ⁇ ⁇ in the input video falls within the range of the section in which the frame rate in the input video is 12 frame nosec.
- the number of frames 2880 is equivalent to 00: 04: 00: 00: 00 when converted with respect to 12 frames / second.
- the time code of the start point of section ⁇ ⁇ ⁇ ⁇ in the input video is 00: 16: .00 by considering the frame rate change point data ⁇ 12 frames / second, 00: 12: 00: 00: 00 ⁇ . : 00 is calculated.
- the time code of the end point of the section ⁇ ⁇ ⁇ ⁇ in the output video is calculated as 00: 21: 59: 29.
- the number of frames from the sync point is calculated by taking the total number of frames. Therefore, even when the input video is a variable speed frame rate video, the uniqueness of the output timecode is guaranteed, and the input timecode can be uniquely specified from the output timecode.
- the input time code can be uniquely specified from the output time code, it is not difficult to extend the use section of the output video. For example, it is possible to easily re-convert the frame rate by going back the desired number of frames without having to count the number of frames while rewinding the input video.
- Embodiments 1 to 8 have been described in detail.
- time code can be added quickly and efficiently without manual intervention.
- the numerical values such as the frame rate are numerical values other than the numerical values in the above-described example, such an effect is exerted.
- the program of the present invention combines the operations of all or some of the steps (or steps, operations, actions, etc.) of the above-described signal processing method of the present invention. It is a program to be executed by the user and operates in cooperation with a computer.
- the recording medium of the present invention is a computer-readable recording medium for causing a computer to execute all or a part of all or a part of the above-described signal processing method of the present invention (or a process, an operation, an operation, or the like).
- a recording medium carrying a program, the recording medium being readable by a computer and executing the operation in cooperation with the computer.
- the “partial steps (or steps, operations, actions, etc.) J” of the present invention means one or some of the plurality of steps.
- the “operation of the step (or the process, the operation, the operation, etc.)” of the present invention means the operation of all or a part of the step.
- One use form of the program of the present invention may be a form in which the program is recorded on a computer-readable recording medium and operates in cooperation with the computer.
- One use form of the program of the present invention may be transmitted in a transmission medium, read by a computer, and operated in cooperation with the computer.
- the recording medium includes ROM and the like
- the transmission medium includes a transmission medium such as the Internet, light, radio waves, and sound waves.
- the computer of the present invention described above is not limited to pure hardware such as CPU, but may include firmware, OS, and peripheral devices.
- the configuration of the present invention may be realized by software or hardware. Industrial applicability
- the present invention has the advantage that the converted time code can be automatically added to the video after the frame rate conversion. '
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Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP03723232A EP1503587A1 (en) | 2002-05-07 | 2003-05-01 | Signal processing device, signal processing method, program, and recording medium |
US10/946,481 US7298417B2 (en) | 2002-05-07 | 2004-09-21 | Signal processing apparatus, signal processing method, program, and recording medium |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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JP2002131221A JP4425521B2 (ja) | 2002-05-07 | 2002-05-07 | フレームレート変換装置 |
JP2002-131221 | 2002-05-07 |
Related Child Applications (1)
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US10/946,481 Continuation US7298417B2 (en) | 2002-05-07 | 2004-09-21 | Signal processing apparatus, signal processing method, program, and recording medium |
Publications (1)
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WO2003096691A1 true WO2003096691A1 (fr) | 2003-11-20 |
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ID=29416607
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PCT/JP2003/005564 WO2003096691A1 (fr) | 2002-05-07 | 2003-05-01 | Dispositif et procede de traitement des signaux, programme et support d'enregistrement |
Country Status (4)
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US (1) | US7298417B2 (ja) |
EP (1) | EP1503587A1 (ja) |
JP (1) | JP4425521B2 (ja) |
WO (1) | WO2003096691A1 (ja) |
Families Citing this family (9)
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JP4366277B2 (ja) * | 2004-09-21 | 2009-11-18 | キヤノン株式会社 | 撮像装置及びその制御方法 |
US7949229B2 (en) * | 2005-08-29 | 2011-05-24 | Sony Corporation | Discontinuous timeline in disc authoring |
CN100461846C (zh) * | 2006-07-31 | 2009-02-11 | 华为技术有限公司 | 一种帧频变换的方法及装置 |
US20080291194A1 (en) * | 2007-05-23 | 2008-11-27 | Yung-Ching Lee | Data transmission method applied in asynchronous display and related electronic system |
US8077222B2 (en) * | 2007-11-06 | 2011-12-13 | Canon Kabushiki Kaisha | Image processing apparatus to transmit moving image data |
JP2012054619A (ja) * | 2009-03-19 | 2012-03-15 | Grass Valley Co Ltd | 編集装置、編集方法、編集プログラム及びデータ構造 |
US9865205B2 (en) * | 2015-01-19 | 2018-01-09 | Himax Technologies Limited | Method for transmitting data from timing controller to source driver and associated timing controller and display system |
US11146608B2 (en) * | 2017-07-20 | 2021-10-12 | Disney Enterprises, Inc. | Frame-accurate video seeking via web browsers |
US11315606B1 (en) | 2019-09-25 | 2022-04-26 | Amazon Technologies, Inc. | Timecode generation and assignment |
Citations (3)
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JPH1066036A (ja) * | 1996-08-15 | 1998-03-06 | Oki Electric Ind Co Ltd | Tv方式変換装置 |
JP2001054066A (ja) * | 1999-08-11 | 2001-02-23 | Toshiba Corp | 復号化装置および画像表示システム並びに画像表示方法 |
JP2002077797A (ja) * | 2000-08-29 | 2002-03-15 | Brother Ind Ltd | 映像編集装置 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
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US5633687A (en) * | 1995-10-23 | 1997-05-27 | C-Cube Microsystems | Method and system for providing an interlaced image on an display |
US6177922B1 (en) * | 1997-04-15 | 2001-01-23 | Genesis Microship, Inc. | Multi-scan video timing generator for format conversion |
US6034731A (en) * | 1997-08-13 | 2000-03-07 | Sarnoff Corporation | MPEG frame processing method and apparatus |
KR100897645B1 (ko) * | 2000-08-10 | 2009-05-14 | 소니 가부시끼 가이샤 | 비디오 신호 처리 장치 및 방법 |
-
2002
- 2002-05-07 JP JP2002131221A patent/JP4425521B2/ja not_active Expired - Lifetime
-
2003
- 2003-05-01 EP EP03723232A patent/EP1503587A1/en not_active Withdrawn
- 2003-05-01 WO PCT/JP2003/005564 patent/WO2003096691A1/ja active Application Filing
-
2004
- 2004-09-21 US US10/946,481 patent/US7298417B2/en active Active
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH1066036A (ja) * | 1996-08-15 | 1998-03-06 | Oki Electric Ind Co Ltd | Tv方式変換装置 |
JP2001054066A (ja) * | 1999-08-11 | 2001-02-23 | Toshiba Corp | 復号化装置および画像表示システム並びに画像表示方法 |
JP2002077797A (ja) * | 2000-08-29 | 2002-03-15 | Brother Ind Ltd | 映像編集装置 |
Also Published As
Publication number | Publication date |
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US7298417B2 (en) | 2007-11-20 |
JP4425521B2 (ja) | 2010-03-03 |
JP2003324694A (ja) | 2003-11-14 |
EP1503587A1 (en) | 2005-02-02 |
US20050052572A1 (en) | 2005-03-10 |
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