JP4675885B2 - Information recording apparatus, information recording method, and information recording program - Google Patents

Description

【Technical field】
[0001]
  The present application belongs to the technical fields of an information recording apparatus and an information recording method, an information reproducing apparatus and an information reproducing method, an information recording program, and an information reproducing program.
[Background]
[0002]
  2. Description of the Related Art Conventionally, for example, there is a so-called hard disk recorder as an information recording apparatus capable of recording digitized moving image information obtained by receiving broadcast waves such as terrestrial broadcasts and satellite broadcasts.
[0003]
  Here, in the conventional hard disk recorder, information corresponding to the CM (commercial message) part is recorded together with information corresponding to the main part (other than the CM part) and corresponds to the CM part at the time of reproduction. Some of them are equipped with a so-called commercial cut function that can be played back with skipping information.
[0004]
  In addition, the hard disk recorder will be introduced into the market in the future as a player having a playback function such as so-called chasing playback or cash playback using the random accessibility provided by the hard disk as a recording medium incorporated therein. It is thought to be done.
DISCLOSURE OF THE INVENTION
[Problems to be solved by the invention]
[0005]
  Here, in the conventional hard disk recorder and the like described above, the commercial cut function and the like described above are provided. However, for example, when continuously broadcasting a program broadcasted weekly or monthly, such as a continuous drama, etc., to the hard disk. In many programs, the beginning and the end of each program often have exactly the same contents (for example, an opening section such as a theme song or an ending section such as an ending song).
[0006]
  Therefore, when a user wants to watch all the times of a program that has been recorded and is regularly broadcast, the user can manually view the opening and ending images described above while watching the program each time. However, there was a problem that the operation was troublesome and troublesome.
[0007]
  Therefore, the present application has been made in consideration of the above circumstances, and an example of the problem is to improve the convenience in reproducing a program broadcast including the same part each time, such as an opening part or an ending part. Information reproducing apparatus and information reproducing method, information reproducing program used for the reproduction, information recording apparatus and information recording method capable of recording each program so as to improve the convenience, and the information recording program Alternatively, an information recording medium in which each program is recorded is provided.
[Means for Solving the Problems]
[0008]
  In order to solve the above problems, the invention described in claim 1In an information recording apparatus for recording a plurality of pieces of recording information, part of which has the same content, an acquisition unit that acquires each of the recording information, a recording unit that records each of the acquired recording information, and the stored Based on the first detection means for detecting the part of the boundary portion in each of the recording information designated in advance and the other recorded information recorded thereafter, and the detection result of the acquired boundary portion Second detecting means for detecting whether or not the partial contents are identical to each other, the recording means refers to a parameter indicating recording information to be carried after the recording information is deleted, The detected part of the same content is deleted, the recording information is sequentially recorded, and the next recording information from which the same content is removed is advanced..
[0009]
  To solve the above problems, the claims4The invention described inIn an information recording method for recording a plurality of pieces of recording information, some of which have the same content, an acquisition step for acquiring each of the recording information, a recording step for recording each of the acquired recording information, and the storage Based on a first detection step of detecting the part of the boundary portion in each of the recording information designated in advance and the other recorded information recorded thereafter, and the detection result of the acquired boundary portion A second detection step for detecting whether or not the contents of the parts are identical to each other, wherein the recording step refers to a parameter indicating recording information to be advanced after deletion of the recording information, The detected part of the same content is deleted, the recording information is sequentially recorded, and the next recording information from which the same content is removed is advanced.
[0010]
  To solve the above problems, the claims5The invention described inAn acquisition means for acquiring the recording information of a plurality of pieces of recording information, part of which has the same content, a recording means for recording the acquired recording information, and a predesignated one stored First detection means for detecting the partial boundary portion in each of the recording information and the other recorded information recorded thereafter, the partial content based on the acquired detection result of the boundary portion. A second detecting means for detecting whether or not they are identical to each other, wherein the recording means refers to a parameter indicating recording information to be carried after the recording information is deleted, and The recording information is sequentially recorded by deleting the same contents, and the next recording information from which the same contents are removed is caused to function as a means for carrying forward processing.
[Brief description of the drawings]
[0014]
FIG. 1 is a block diagram illustrating a schematic configuration of an information processing apparatus according to an embodiment.
FIG. 2 is a block diagram showing an internal configuration of a scene change detection unit according to the embodiment.
FIG. 3 is a block diagram showing an internal configuration of the same scene detection unit according to the embodiment.
FIG. 4 is a diagram illustrating a recording example of a program according to the embodiment.
FIG. 5 is a flowchart showing a scene change detection process and an identical scene detection process in the reproduction process according to the first embodiment.
FIG. 6 is a diagram illustrating the contents of the same scene recording table according to the first embodiment.
FIG. 7 is a flowchart showing a reproduction process according to the first embodiment.
FIG. 8 is a diagram illustrating a reproduction process according to the first embodiment.
FIG. 9 is a flowchart showing recording processing according to the second embodiment.
[Explanation of symbols]
[0015]
  1 Information processing equipment
  2 Antenna
  3 TV monitor
  11 Tuner
  12 TS demodulator
  13 Hard disk drive
  13a hard disk
  14 Recording / playback control unit
  15 Remote control
  16 Scene change detector
  17 Same scene detector
BEST MODE FOR CARRYING OUT THE INVENTION
[0016]
  Next, the best mode for carrying out the present application will be described with reference to the drawings.
[0017]
  In the embodiment described below, it is possible to record AV (Audio Visual) information distributed in digital broadcasting represented by BS (Broadcasting Satellite) digital broadcasting on a hard disk. In this embodiment, the information recording apparatus and the information reproducing apparatus of the present application are applied to an information processing apparatus that can also perform AV information reproduction processing.
[0018]
  In the following description, it is assumed that the AV information is broadcast according to the TS (transport stream) standard in the MPEG2 standard, which is a well-known standard for moving image compression technology.
[0019]
  (I)First embodiment
  First, a first embodiment according to the present application will be described with reference to FIGS.
[0020]
  First, the overall configuration and operation of the information processing apparatus according to the first embodiment will be described with reference to FIGS. 1 to 3. 1 is a block diagram illustrating the information processing apparatus according to the first embodiment, FIG. 2 is a block diagram illustrating an internal configuration of a scene change detection unit included in the information processing apparatus, and FIG. It is a block diagram which shows the internal structure of the same scene detection part contained in a processing apparatus.
[0021]
  As shown in FIG. 1, an information processing apparatus 1 according to the first embodiment includes an antenna 10 that receives a broadcast wave of a digital broadcast, a tuner unit 11 as an acquisition unit, a TS demodulation unit 12, a hard disk (hereinafter referred to as HD). A hard disk drive (hereinafter referred to as HDD) 13 as a recording means having a built-in 13a, a recording / reproduction control unit 14 as a reproducing means and a recording means, a remote controller 15,As the first detection meansA scene change detector 16;SecondThe same scene detection part 17 as a detection means, the television signal production | generation part 18, and the TV (Television) monitor 19 are comprised.
[0022]
  Next, detailed configurations of the scene change detection unit 16 and the same scene detection unit 17 will be described with reference to FIGS. 2 and 3, respectively.
[0023]
  First, as shown in FIG. 2, the scene change detection unit 16 includes a DC (direct current) coefficient extraction unit 21, a buffer circuit 22, a difference extraction circuit 23, an absolute value conversion circuit 24, a scene change determination circuit 25, It is comprised by. At this time, an encoded video signal is input from the HDD 13 to the DC coefficient extraction unit 21, while a frame / clock signal is input to the buffer circuit 22, and a threshold control signal is input to the scene change determination circuit 25. Input from the reproduction control unit 14.
[0024]
  On the other hand, as shown in FIG. 3, the same scene detection unit 17 includes a DC coefficient extraction unit 26, a buffer circuit 27, a difference extraction circuit 28, an absolute value conversion circuit 29, and the same scene determination circuit 30. Has been. In this configuration, the encoded video signal is input from the HDD 13 to the DC coefficient extraction unit 26, while the frame clock signal is input to the buffer circuit 27 and the threshold value is input to the same scene determination circuit 30, as in FIG. Control signals are respectively input from the recording / playback control unit 14.
[0025]
  Here, the “scene” refers to one group (lumps) having temporal continuity in contents in the moving image information received and recorded in the HD 13a. Further, “scene change” refers to a boundary portion of the scene. For example, in general, moving image information that constitutes a program has an opening part and an ending part in addition to the main part that is the program itself, a boundary part between the opening part and the main part, and an ending with the main part. In many cases, a CM portion exists at each of the boundary portions with the portion, and an example of scene change detection is detecting a boundary portion between the CM portion and another portion.
[0026]
  In this case, the CM unit can be identified by detecting a silence of several hundred milliseconds that is normally provided immediately before the start of the CM unit. Further, as another example of detecting the CM section, as is well known, since the audio signal included in the CM section is always in stereo mode and other main sections are in monaural mode, for example, the difference between these broadcast modes. There is also an example in which the CM part is identified by.
[0027]
  Next, an outline operation of the information processing apparatus 1 having the above-described configuration will be described.
[0028]
  First, the recording operation to the HD 13a will be described.
[0029]
  In the recording operation, when a broadcast radio wave including program information corresponding to a program to be received is received by the antenna 10, when the program is selected by operating the remote controller 15, the tuner unit 11 Under the control of the recording / playback control unit 14 based on the operation signal corresponding to the channel selection operation from 15, the received signal corresponding to the program information is extracted from the received signal that received the broadcast radio wave, and the TS demodulator 12 is output.
[0030]
  Then, the TS demodulator 12 demodulates the compressed and encoded video signal and encoded audio signal included in the output received signal and outputs them to the HDD 13.
[0031]
  Thus, the HDD 13 records the demodulated encoded video signal and encoded audio signal on the HD 13a. The recording mode in this case will be described in detail later with reference to FIGS.
[0032]
  Next, the reproduction operation of the encoded video information and encoded audio information recorded on the HD 13a will be described.
[0033]
  During the reproduction operation, the encoded video signal and the encoded audio signal read from the HD 13a at a predetermined timing are output to the television signal generation unit 18. Then, the television signal generation unit 18 decodes the output encoded video signal and encoded audio signal as a television signal and outputs them to the TV monitor 3.
[0034]
  When the decoded video signal is input, the TV monitor 3 outputs an image corresponding to the input video signal, and when the decoded audio signal is input, the input audio signal is input. The sound corresponding to is emitted by a speaker (not shown).
[0035]
  On the other hand, in parallel with the reproduction operation described above, the encoded video signal is also output from the HD 13a to the scene change detection unit 16 and the same scene detection unit 17.
[0036]
  The scene change detection unit 16 detects a scene change in the video displayed by the encoded video signal, generates a scene change detection signal indicating the detection result, and outputs the scene change detection signal to the recording / playback control unit 14.
[0037]
  On the other hand, the same scene detection unit 17 compares the encoded video signals corresponding to the respective scenes under the control of the recording / playback control unit 14 based on the scene change detection signal output from the scene change detection unit 16, and It is detected whether the scenes corresponding to the compared encoded video signals have the same contents, and the same scene detection signal indicating the detection result is generated and output to the recording / playback control unit 14.
[0038]
  Then, the recording / playback control unit 14 generates necessary control signals and the like so that the playback process of the first embodiment described later is executed based on the scene change detection signal and the same scene detection signal. Output to the member.
[0039]
  Next, details of the scene change detection operation by the scene change detection unit 16 will be described with reference to FIG.
[0040]
  In the scene change detection operation described above, the DC coefficient extraction unit 21 in the scene change detection unit 16 includes the encoded video signal encoded in accordance with the MPEG2 standard, including a DC (direct current) coefficient and an AC (alternating current) coefficient. Therefore, only the DC coefficient is extracted for each block in each frame constituting the encoded video signal.
[0041]
  Then, the extracted DC coefficient is output as it is to the difference extraction circuit 23 and also to the buffer circuit 22, and is delayed by a time corresponding to one frame based on the frame clock signal in the buffer circuit 22. It is output to the extraction circuit 23.
[0042]
  As a result, in the difference extraction circuit 23, the DC coefficient D (τ−1) (τ) of the encoded video signal at the timing (τ−1) one frame before input delayed by one frame in the buffer circuit 22. Represents the timing of the current frame, and D represents the DC coefficient. The same applies hereinafter.) And the DC coefficient D (τ) of the encoded video signal corresponding to the frame at the current timing are compared for each block. The difference D (τ) −D (τ−1) is calculated for each block and output to the absolute value conversion circuit 24.
[0043]
  Next, the absolute value conversion circuit 24 calculates the absolute value “| D (τ) −D (τ−1) |” of the difference for each block, so that two frames adjacent to each other on the time axis are calculated. The absolute difference value of the DC coefficient for each block in is obtained. Here, in the portion where the scene change has occurred, the continuity of the frame immediately before the scene change and the frame immediately after the scene change are significantly different, so the absolute value of the difference is a large value. Further, in the case of a scene change, since the above-described state in which the absolute difference value is large occurs in all the blocks in the compared frames, the number of blocks in which the absolute difference value becomes large also increases.
[0044]
  Accordingly, the scene change determination circuit 25 determines the number of blocks in which the difference absolute value | D (τ) −D (τ−1) | is greater than a preset threshold A in a frame at a certain timing τ. Is greater than a preset threshold value B, it is determined that a scene change has occurred between the timing τ and the immediately preceding timing (τ-1), and the scene change detection signal indicating that Is output to the recording / playback control unit 14. In these processes, the thresholds A and B are experimentally set in advance, and are output from the recording / playback control unit 14 as threshold control signals.
[0045]
  Next, details of the same scene detection operation by the same scene detection unit 17 will be described with reference to FIG.
[0046]
  In the same scene detection operation described above, the same scene detection unit 17 encodes the DC coefficient for one frame in the encoded video signal that constitutes the comparison reference scene and the encoding that constitutes the scene to be compared with the comparison reference. The DC coefficient for one frame in the video signal is compared, and the encoded video signal corresponding to the scene to be compared is alternately input to the scene change detection unit 17 from the HD 13a. For example, when comparing scene 1 and scene 5, the corresponding frame of scene 1 is input, the frame clock signal is input to the buffer circuit 27, and after buffering the corresponding frame of scene 1, 5. Input the corresponding frame. The DC coefficient extraction unit 26 extracts only the DC coefficient for each block in each frame constituting each of the encoded video signals input alternately.
[0047]
  In the difference extraction circuit 28, the DC coefficient D1 (τ) of the encoded video signal at the scene 1 timing (τ) and the encoded video signal at the scene 5 timing (τ) input after being buffered in the buffer circuit 27. The DC coefficient D5 (τ) of each block is compared for each block, and the difference, D1 (τ) −D5 (τ), is calculated for each block and output to the absolute value circuit 29.
[0048]
  Next, the absolute value conversion circuit 29 calculates the absolute value “| D1 (τ) −D5 (τ) |” of the difference for each block, thereby making the two adjacent frames on the time axis respectively. The absolute difference value of the DC coefficient for each block is obtained. Here, when the two scenes to be compared are the same, the absolute difference value is very close to zero.
[0049]
  As a result, in the same scene determination circuit 30, the number of blocks in which the difference absolute value | D1 (τ) −D5 (τ) | is smaller than a preset threshold C in a frame at a certain timing τ is determined in advance. When the threshold value D is greater than the set threshold value D, it is determined that the contents of the scene 1 and the contents of the scene 5 at the timing τ are the same, and the same scene detection signal indicating the fact is generated and recorded. / Output to playback control unit 14 In these processes, the thresholds C and D are experimentally set in advance, and are output from the recording / playback control unit 14 as threshold control signals.
[0050]
  (IA)Recording process of the first embodiment
  Next, a recording process according to the first embodiment executed under the control of the recording / playback control unit 14 will be described.
[0051]
  The recording process itself according to the first embodiment is basically the same as the conventional one. For example, in the case of the above-mentioned continuous drama, the encoded video signal and Recorded as an encoded audio signal.
[0052]
  In the following description of the first embodiment, each broadcast portion of the above-described continuous drama is referred to as a “title”. Each title is composed of an opening part, a main part that follows it, and an ending part that follows.
[0053]
  Further, in the recording process according to the first embodiment, each title is recorded as an encoded video signal and an encoded audio signal in the form in which they are broadcast, but in the description of the reproduction process described later, Each title is assumed to have a scene configuration as shown in FIG. 4, and each scene is detected in the reproduction process. Here, FIG. 4 is a diagram illustrating a state in which the encoded video signal corresponding to the continuous drama is recorded on the HD 13a, and the CM section described above is omitted.
[0054]
  That is, as shown in FIG. 4, for each title that has been recorded for use in the playback process described below, in title 1, the scenes indicated by scene numbers 1 and 2 (to be described later) are used as the opening portion of title 1. Correspondingly, a scene indicated by a scene number 3 described later corresponds to a main part of the title 1, and a scene indicated by a scene number 4 described later corresponds to an ending part of the title 1. Similarly, in the title 2, scenes indicated by scene numbers 5 and 6 described later are in the opening section, scenes indicated by scene number 7 described below are in the main part, and scenes indicated in scene number 8 are described in the ending section. Respectively. Similarly, in the title 3, the scenes indicated by scene numbers 9 and 10 (described later) are displayed in the opening section, the scene indicated by scene number 11 (described later) is displayed in the main part, and the scene indicated by scene number 12 (described later) is ending. It corresponds to each part. And the opening part and the ending part in each title have the same scene content between the respective titles.
[0055]
  (IB)Reproduction processing of the first embodiment
  Next, with reference to FIGS. 5 to 8, the reproduction processing according to the first embodiment for reproducing the encoded video signal and the encoded audio signal recorded only on the title 13 shown in FIG. 4 and recorded on the HD 13a will be described. explain.
[0056]
  5 is a flowchart showing the scene change detection process and the same scene detection process according to the first embodiment, and FIG. 6 is the same according to the first embodiment corresponding to each title recorded in the mode shown in FIG. FIG. 7 is a diagram illustrating the contents of a scene recording table, FIG. 7 is a flowchart showing a playback process considering the identity of the scene according to the first embodiment, and FIG. 8 is a diagram specifically illustrating the playback process. is there.
[0057]
  In the playback processing according to the first embodiment, before the actual playback processing, only the titles are divided and detected in the encoded video signal recorded on the HD 13a, and the same in each detected scene. A scene is detected based on the processing shown in FIG. 5, and the result is recorded on the HD 13a as the same scene recording table shown in FIG.
[0058]
  In FIG. 5, a parameter N is a parameter indicating the number of each scene detected later, and a parameter I is the number of a scene serving as a comparison reference when detecting whether or not two scenes are the same. The parameter L is a parameter indicating the number of the scene to be compared with the scene to be compared.
[0059]
  Further, the processing shown in FIG. 5 includes scene change detection processing (steps S1 to S7) for identifying and detecting each scene in the encoded video signal in which only the title is recorded and recorded, and the detected scene. The same scene detection process (steps S8 to S12) for detecting scenes having the same content by comparing each other.
[0060]
  As shown in FIG. 5, when the reproduction process according to the first embodiment is started, the parameter N is first initialized (step S1), and the encoded video signals recorded on the HD 13a are read in order from the title 1 ( Step S2).
[0061]
  Next, the recording start position information indicating the recording start position on the HD 13a of the title 1 is set as the start address of the scene with the scene number “1” (the recording start position on the HD 13a of each scene is hereinafter referred to as a start address (SA), The recording end position of each scene on the HD 13a is hereinafter referred to as an end address (EA). The same applies hereinafter) and recorded in a scene address table (to be described later) in the same scene recording table (step S3). It is confirmed whether or not reading of all the encoded video signals above has been completed (step S4).
[0062]
  Since all reading has not been completed at present (step S4; NO), next, the scene change detection unit 16 checks whether or not a scene change has occurred in the frame of the currently read encoded video signal. (Step S5). When a scene change is not detected (step S5; NO), the encoded video signal is read as it is. On the other hand, when a scene change is detected (step S5; YES), immediately before the scene change. Since one scene has been detected, position information indicating the timing of the detected scene change is recorded in the scene address table as the end address of the scene with the scene number “1”, and the parameter N is incremented. (Step S6), the process returns to step S3 to detect the next scene.
[0063]
  Thereafter, the processes in steps S3 to S6 are performed for all the encoded video signals recorded on the HD 13a. When reading of all the encoded video signals is completed (step S4; YES), the recording position on the HD 13a of the encoded video signal read last is used as the last scene number constituting the encoded video signal. Is recorded in the scene address table as the end address of the scene (step S7).
[0064]
  As a result of the processes in steps S1 to S7 described above, the scene numbers, start addresses, and end addresses in all scenes included in the encoded video signal on the HD 13a are specified and recorded in the scene address table. Become.
[0065]
  Here, the result of detecting each scene in the encoded video signal illustrated in FIG. 4 will be described with reference to FIG.
[0066]
  After the scene change detection process (steps S1 to S7) shown in FIG. 5 is completed, the scene address table shown on the left in FIG. 6 is completed. At this time, in the scene address table, for each title, the start address and end address of each scene constituting the title are recorded in units of frames. In the scene address table shown on the left side of FIG. 6, the start address in units of hours (h), minutes (m), seconds (s) and frames (f) for each of the 12 scenes illustrated in FIG. And the end address is recorded.
[0067]
  More specifically, in the examples shown on the left side of FIGS. 4 and 6, the scenes with the scene numbers “1” and “2” included in the opening part of the title 1 have start addresses “title 1: 00h00m00s00f” and “ “Title 1: 00h05m00s00f” and end addresses “Title 1: 00h05m00s00f” and “Title 1: 00h05m30s00f”.
[0068]
  The scene number “3”, which is the main part of the title 1, has a start address “title 1: 00h05m30s00f” and an end address “title 1: 00h25m30s00f”.
[0069]
  Next, the scene with the scene number “4” which is the ending portion of the title 1 has a start address “title 1: 00h25m30s00f” and an end address “title 1: 00h30m00s00f”.
[0070]
  Further, similarly, the scene with the scene number “5” included in the opening part of the title 2 has the start address “title 2: 00h00m00s00f” and the end address “title 2: 00h05m00s00f”. The scene with the scene number “6” included in the part has the start address “title 2: 00h05m00s00f” and the end address “title 2: 00h05m30s00f”, and the scene with the scene number “7” that is the main part of the title 2 The start address is “title 2: 00h05m30s00f”, the end address is “title 2: 00h25m30s00f”, the scene with the scene number “8”, which is the ending part of title 2, has the start address “title 2: 00h25m30s00f” The address is “Title 2: 00h30m00s00f” and is included in the opening part of Title 3. The scene with the scene number “9” has the start address “title 3: 00h00m00s00f”, the end address “title 3: 00h05m00s00f”, and the scene with the scene number “10” included in the opening part of the title 3 Is “title 3: 00h05m00s00f”, the end address is “title 3: 00h05m30s00f”, the scene number “11”, which is the main part of the title 3, has the start address “title 3: 00h05m30s00f” and the end address “ The ending part of the title 3 with the scene number “12” has a start address “title 3: 00h25m30s00f” and an end address “title 3: 00h30m00s00f”.
[0071]
  Next, after each scene is detected (after the detection, the parameter N indicates the maximum number of scene numbers (total number of scenes) in all scenes recorded in the HD 13a). The same scene detection process executed in this way will be described.
[0072]
  When all the scenes are detected for each title recorded on the HD 13a (step S7), it is then checked whether or not all scenes are used as the comparison reference in the same scene detection process (step S8). ) Currently, the scene with the scene number “1” is the comparison criterion (step S8; NO). Next, all scenes are compared and contrasted with the scene serving as the comparison criterion at that time. It is confirmed whether or not (step S9).
[0073]
  In the process of step S9, since the scene with the scene number “1” is currently the comparison reference (step S9; NO), the scene number of the scene that is currently the comparison reference is compared with the comparison reference. It is confirmed whether the scene number is the same (step S10). Since both are currently “1” (step S10; YES), the process returns to step S9 because it is not the target of the same scene detection process, and the parameter L is incremented to “2” (step S9). Then, not all scenes have been compared yet (Step S9; NO), and the scene number of the scene that is the comparison reference (currently “1”) and the scene that is the comparison reference The number (currently “2”) is not currently the same (step S10; NO). Next, the scene number “1”, which is the current comparison reference, and the scene number “ The same scene detection unit 17 confirms the identity with the scene 2 ”(step S11). As a result, the scene with the current scene number “1” is not the same as the scene with the scene number “2” (see FIG. 4; step S11; NO), so the process returns to step S9 as it is and the next scene number “3” is displayed. The above-described steps S9 to S11 are repeated with the scene "" as a comparative control. When the processes of steps S9 to S11 are repeated until all scenes become comparison references (step S9; YES), when scenes with scene numbers “5” and “9” become comparison references, the current comparison reference The scene content is the same as the scene (scene number “1”) (see FIG. 4; step S11; YES). The scene numbers “5” and “9” having the same contents are added (step S12), and the process returns to step S9.
[0074]
  After all the other scenes are compared and compared for the scene with the scene number “1” as the comparison reference (step S9; YES), the comparison reference scene is incremented and the next scene number “2” is set. The processes of steps S9 to S12 described above are executed using the scene " Thereafter, it is repeated that all the other scenes are used as the comparison reference for one comparison reference scene, and after all the scenes are set as comparison references (step S8; YES), the process proceeds to a reproduction process described later.
[0075]
  Here, the result of detecting the identity of each scene in the encoded video signal illustrated in FIG. 4 will be described with reference to FIG.
[0076]
  After the same scene detection process (steps S8 to S12) shown in FIG. 5 is completed, the same scene number table shown on the right in FIG. 6 is completed. At this time, in the same scene number table, the number of a scene having the same content as that scene is recorded for each scene.
[0077]
  More specifically, in the examples shown on the right in FIG. 4 and FIG. 6, scenes having the same content as the scene of the scene number “1” of the title 1 (first half of the opening part) are scenes of the scene numbers “5” and “9”. The scenes having the same contents as the scene of the scene number “2” of the title 1 (the latter half of the opening part) are the scenes of the scene numbers “6” and “10”, and the scene of the scene number “3” of the title 1 There is no scene having the same contents as the scene (main part), and scenes having the same contents as the scene (end part) of the scene number “4” of the title 1 are the scenes having the scene numbers “8” and “12”. It has become.
[0078]
  Similarly, scenes having the same contents as the scene of the scene number “5” of the title 2 are the scenes of the scene numbers “1” and “9”, and are the same as the scene of the scene number “6” of the title 2 The scenes having the contents are the scenes having the scene numbers “2” and “10”, the scene having the same contents as the scene having the scene number “7” of the title 2 is not present, and the scene having the scene number “8” of the title 2 The scenes having the same content as the scenes with the scene numbers “4” and “12” are the scenes having the same content as the scene with the scene number “9” of the title 3 and the scene numbers “1” and “5”. The scenes having the same content as the scene of the scene number “10” of the title 3 are the scenes of the scene numbers “2” and “6”, and the scene of the scene number “11” of the title 3 Not a scene with the same content, a scene with a scene of the same content and scene number of title 3 "12", has become a scene of the scene number "4" and "8".
[0079]
  The same scene recording table shown in FIG. 6 is completed by the processes in steps S1 to S12 described above. In the following reproduction process, the reproduction process according to the first embodiment is executed using the same scene recording table.
[0080]
  Next, the reproduction process will be described with reference to FIGS.
[0081]
  As shown in FIG. 7, in the reproduction process according to the first embodiment, first, the parameter N is initialized and the flag SF is turned off (step S13). Here, the flag SF is a flag indicating that playback of the scene having the same content detected by the process shown in FIG. 5 is skipped and the playback process is continued, and is set in the recording / playback control unit 14. Is.
[0082]
  When each initialization is completed, next, the start address and end address of the scene having the current scene number “1” are read from the scene address table shown in FIG. 6, and the parameter SA (parameter indicating the start address) and parameter EA are read out. (Parameter indicating end address) is set (step S14).
[0083]
  Then, it is confirmed whether or not the current parameter SA has a substance (step S15), and since the start address of the scene with the scene number “1” is currently set in the parameter SA (step S15; NO) Next, based on the same scene number table shown in FIG. 6, it is checked whether there is another scene with the same content in the scene with the number indicated by the current parameter N (step S16). At this time, since the scene having the current scene number “1” includes scenes having the same contents of the scene numbers “5” and “9” (step S16; NO), next, whether or not the flag SF is currently on. (Step S18). Since the current flag SF is not on (step S18; NO), the scene having the scene number indicated by the value of the parameter N at that time (currently “1”) is reproduced from the start address to the end address and output. (Step S19), the value of the parameter N is incremented (Step S20), the process returns to Step S14, and the processes of Steps S14 to S20 are repeated for the next scene number “2”.
[0084]
  At this time, for the scene with the scene number “2”, there are other scenes with the same contents (scenes with the scene numbers “6” and “10”) (step S16; NO), and the flag SF is not yet on. (Step S18; NO), the scene of the scene number “2” is reproduced and output from the start address to the end address (Step S19), and the value of the parameter N is incremented (Step S20).
[0085]
  Next, when the scene number is “3” and steps S14 to S16 are executed, there is no other scene having the same content in the scene having the current scene number “3” (step S16; YES). ), The flag SF is turned on from off, and the current value of the parameter N is set in the parameter M (step S17). Here, the parameter M is a parameter indicating the maximum value of the scene number for which the reproduction process is completed when the reproduction process is in progress while skipping reproduction of the scene having the same content.
[0086]
  When the scene with the scene number “3” is reproduced by the process of step S19, the parameter N is incremented (step S20) and the process returns to step S14 again.
[0087]
  When steps S14 to S16 are executed when the scene number is "4", the scene having the current scene number "4" has a scene with the same scene number (step S16; NO). Since the flag SF is currently on (step S18; YES), the scene number “4” is not reproduced and skipped, and the process proceeds to step S20.
[0088]
  By repeating the processes of steps S14 to S20 described above, a scene with other scenes having the same content in the same scene recording table shown in FIG. 6 is skipped, while a scene having no other scenes with the same content. While the process of executing the reproduction is repeated, the reproduction process up to the second scene from the end (the scene with the scene number “11” in the case of FIGS. 4 and 6) is executed (see FIG. 8).
[0089]
  Then, when the reproduction process of step S19 is completed for the second scene from the end (note that, at this stage, the parameter M is equal to the scene number of the second scene from the last), then, After incrementing the scene number (step S20), the processes of steps S14 to S16 are executed. At this time, the process of step S16 for the last scene is “NO”, and further, “YES” is determined in the determination of step S18. Therefore, the last scene (scene number “12” in the case of FIG. 4) is The scene number is incremented without being reproduced (step S20), and the processes of steps S14 and S15 are executed again for the incremented scene number. Then, in this process of step S15, since it is a determination for a scene number that does not actually exist, there is no start address (step S15; YES), and then the value of the parameter M at that time (currently, The value obtained by adding “1” to “11” (that is, the scene number of the last scene in the example of FIG. 4) is reset as the parameter N, the flag SF is also turned off (step S21), and the current parameter is set. The start address and end address are set in the parameters SA and EA for the scene with the scene number indicated by N (“12” in the case of FIG. 4) (step S22).
[0090]
  Then, it is confirmed whether or not the parameter SA has an entity (step S23), and since the start address of the last scene is currently set (step S23; NO), the last scene is reproduced (step S23). In step S24), the parameter N is incremented (step S25. In the case of FIG. 4, the parameter N is set to “13”), and the process returns to step S22 again.
[0091]
  Then, the above steps S22 and S23 are executed for the current value of the parameter N. Since the current parameter N sets the start address of a nonexistent scene, the parameter SA becomes insubstantial (step S23; YES), the reproduction process according to the first embodiment is terminated, assuming that all scenes have been reproduced.
[0092]
  Note that the processes in steps S21 to S25 described above reproduce only the scene of the ending part in the last title among the scenes in which other scenes having the same content exist and correspond to the ending part in the series of titles. Process.
[0093]
  As described above, according to the recording process and the playback process according to the first embodiment, scenes having the same contents as other titles are detected in each title, and only the other scenes are skipped by skipping the same scenes. Since it can be played back, it is possible to improve convenience in playing back a program broadcast including the same part each time, such as an opening part or an ending part.
[0094]
  Also, even if the title is recorded before and after the time, the skip playback is automatically performed when the title is continuously played back, so that a series of continuous dramas can be played back more conveniently. Can watch.
[0095]
  (II)Second embodiment
  Next, 2nd Embodiment which is other embodiment which concerns on this application is described using FIG.1 and FIG.9. FIG. 9 is a flowchart showing a recording process according to the second embodiment.
[0096]
  The configuration of the information processing apparatus according to the second embodiment is basically the same as that of the information processing apparatus 1 according to the first embodiment. Therefore, the following embodiment will be described using the same member numbers. Detailed description of each member is omitted. Further, it is assumed that the encoded video signal to be subjected to the recording process of the second embodiment is broadcast with the same title and scene configuration as in the example shown in FIG.
[0097]
  In the first embodiment described above, the encoded video signal is recorded on the HD 13a for each title as received, and the reproduction process is executed to skip the same scene during the reproduction process. In the second embodiment described below, as a recording process, after all scenes are once recorded for each title, one of the scenes having the same contents in each recorded scene is deleted. Then, as a playback process for each title, a playback process according to the recording order similar to the conventional one is executed.
[0098]
  In FIG. 9, the definitions of the parameters N, I, and L are the same as those in the first embodiment, but the parameter M is the scene after the deletion at the stage of deleting the scene having the same contents. This is a parameter used for the process of incrementing the number.
[0099]
  Furthermore, the process shown in FIG. 9 compares the scene change detection process (steps S31 to S38) for identifying and detecting each scene in the received encoded video signal with each detected scene. And a deletion process (steps S39 to S45) for detecting a scene having the same content and deleting one of the scenes.
[0100]
  As shown in FIG. 9, when the recording process according to the second embodiment is started, first, the received encoded video signals are recorded in the order of reception (step S31), and the first time in the program in which the recording process continues. It is confirmed whether it is a recording (step S32). If it is the first recording (step S32; YES), the parameter N is initialized (step S33), and it is confirmed whether or not all the encoded video signals to be recorded at that time have been recorded (step S34). ).
[0101]
  On the other hand, if it is not the first recording in the determination in step S32 (step S32; NO), the process proceeds to step S34 using the value of the parameter N recorded at that time.
[0102]
  Next, when it is not the end of recording in the determination of step S34 (step S34; NO), next, recording start position information indicating the recording start position on the HD 13a of the encoded video signal corresponding to title 1 is set to the scene number. Is recorded in a memory area (not shown) in the recording / playback control unit 14 as the start address of the scene “1” (step S35), and then whether a scene change has occurred in the frame of the currently recorded encoded video signal Whether or not the scene change detection unit 16 confirms is determined (step S36). If a scene change is not detected (step S36; NO), the process of receiving and recording the encoded video signal is continued. If a scene change is detected (step S36; YES), the scene change is continued. Since one scene has been detected until immediately before, the position information indicating the timing of the detected scene change is recorded in the memory as the end address of the scene with the scene number “1”, and the parameter N is incremented. Then (step S37), the process returns to step S34 to detect the next scene in the encoded video signal that is continuously received.
[0103]
  Thereafter, the processes in steps S34 to S37 are performed on all received encoded video signals. When the reception and recording process of all the encoded video signals is completed (step S34; YES), the last recorded position on the HD 13a of the encoded video signal recorded last is the last of the encoded video signal. The scene end address of the scene number is recorded in the memory, and the parameter N at that time is incremented (step S38).
[0104]
  Through the processes in steps S34 to S38 described above, the scene numbers, start addresses, and end addresses in all scenes included in the received encoded video signal are specified and recorded in the memory.
[0105]
  Next, after each scene is detected (after the detection, the parameter N indicates the maximum number of scene numbers (total number of scenes) +1 in all scenes recorded in the HD 13a). Next, the same scene detection process executed will be described.
[0106]
  When all the scenes are detected for each title recorded on the HD 13a (step S38), whether or not the “total number-2” number of scenes is used as a comparison reference in the same scene detection processing is used as the comparison reference. (Step S39), the scene with the scene number “1” is currently the comparison reference (step S39; NO). Next, for the scene that is the comparison reference at that time, It is confirmed whether or not the scene of the last scene number (the current parameter N is the value of “total number of scenes + 1”) after the scene serving as the comparison reference is used as a comparison (step S40). .
[0107]
  In the process of step S40, the scene with the scene number “2” is currently the comparison reference (step S39; NO). Next, the scene with the scene number “1”, which is currently used as the comparison reference, is currently compared. The same scene detection unit 17 confirms the identity with the scene with the scene number “2” as a contrast (step S41). As a result, the scene with the current scene number “1” and the scene with the scene number “2” are not the same (see FIG. 4; step S41; NO), so the process returns to step S40 as it is and the next scene number “3” is displayed. The above-described steps S40 and S41 are repeated with the scene "" as a comparative control. When the processes of steps S40 and S41 are repeated until all scenes become comparison references (step S40; YES), when scenes with scene numbers “5” and “9” become comparison references, the current comparison reference Since the scene content is the same as that of the scene (scene number “1”) (see FIG. 4; step S41; YES), codes corresponding to the scene numbers “5” and “9” that are comparison targets The digitized video signal is deleted from the HD 13a (step S42).
[0108]
  Next, for the parameter M indicating the number of the scene to which the scene number should be incremented after the scene is deleted, it is confirmed whether or not the scene number increment processing has been completed for the deleted scene to the last scene (step S43). If not, for each scene from which the encoded video signal is deleted in step S42, the start address and end address of the next scene of the scene are respectively set to the start address and the scene of the scene from which the encoded video signal is deleted. By copying as an end address, the scene number is substantially incremented (step S45), and this process is repeated for all scenes after the scene from which the encoded video signal has been deleted (step S43).
[0109]
  When the process of incrementing the scene number for one deleted scene is completed (step S43; YES), the current value of the parameter N is decremented (step S44) and the process returns to step S40 again.
[0110]
  Then, after comparing another scene with the scene number “1” serving as the comparison reference (step S40; YES), the number of the scene serving as the comparison reference is incremented, and the next scene number “2” is determined. The above-described steps S40 to S45 are executed using the scene " Thereafter, with respect to one comparison reference scene, another scene is repeatedly used as a comparison reference. After all scenes are set as comparison references (step S39; YES), the recording process according to the second embodiment is terminated.
[0111]
  By the process shown in FIG. 9 described above, the same scene is detected from all the scenes once recorded, and one of the detected scenes is deleted and the scene number is incremented. Accordingly, in the example shown in FIG. 4, the scene numbers are serialized in a state where the scene numbers “4”, “5”, “6”, “8”, “9”, and “10” are deleted. And recorded on the HD 13a.
[0112]
  In the reproduction process of the second embodiment, the titles recorded with the same scene deleted are reproduced in the order of the scene numbers.
[0113]
  As described above, according to the recording process and the playback process according to the second embodiment, scenes having the same contents as other titles are detected and deleted in each recorded title. Only other scenes can be played back, and convenience in playback of a program broadcast including the same part each time, such as an opening part or an ending part, can be improved.
[0114]
  Also, even if the title is recorded before and after the time, the skip playback is automatically performed when the title is continuously played back, so that a series of continuous dramas can be played back more conveniently. Can watch.
[0115]
  Furthermore, since the encoded video signal corresponding to the scene having the same content is deleted, the necessary memory capacity to be recorded in the HD 13a can be reduced.
[0116]
  The present application is not limited to the above embodiments, and various modifications can be made.
[0117]
  For example, in the above-described embodiment, a video signal or the like is acquired by receiving radio waves such as BS digital broadcasting, but other than this, radio waves of analog terrestrial TV broadcasting, server VOD via the Internet or a dedicated line You may make it acquire a video signal etc. from (Video On Demand).
[0118]
  Further, in each of the above embodiments, the case where the HD 13a is used as the recording medium has been described. However, various recording media such as a DVD and a flash memory in which information can be rewritten can be used.
[0119]
  Further, the program corresponding to the flowcharts shown in FIGS. 5, 7, and 9 is recorded on an information recording medium such as a flexible disk or an HD, or is recorded after the program is acquired via a network such as the Internet. By reading and executing these using a general-purpose microcomputer or the like, it is possible to cause the microcomputer to function as the recording / reproduction control unit 14 or the like according to the embodiment.

Claims (5)

  In an information recording apparatus for recording a plurality of recording information, some of which have the same content,
  Obtaining means for obtaining each of the recording information;
  Recording means for recording each of the acquired recording information;
First detecting means for detecting the part of the boundary in each of the stored pre-specified one of the recorded information and the other recorded information recorded thereafter;
  Second detection means for detecting whether or not the contents of the part are the same based on the acquired detection result of the boundary part,
  The recording means refers to a parameter indicating recording information to be carried after the recording information is deleted, sequentially deletes the detected part of the same content, and sequentially records the recording information,
  An information recording apparatus, wherein the next recording information from which the same contents are removed is advanced.   The information recording apparatus according to claim 1,
  Each of the recording information is recording information corresponding to a one-time program in a program group that is broadcast every preset period,
  The information recording apparatus according to claim 1, wherein the part is a repeating unit that is broadcast before and after the main part of the one program.   The information recording apparatus according to claim 2,
  The information recording apparatus according to claim 1, wherein the repeating section includes at least an opening section and an ending section in each program.   In an information recording method for recording a plurality of recorded information, some of which have the same content,
  An acquisition step of acquiring each of the recording information;
  A recording step of recording each of the acquired recording information;
  A first detection step of detecting the part of the boundary portion in each of the stored pre-designated one of the recorded information and the other recorded information recorded thereafter;
  A second detection step of detecting whether or not the contents of the part are the same based on the acquired detection result of the boundary part,
  The recording step refers to a parameter indicating recording information to be carried after the recording information is deleted, sequentially deletes the detected part of the same content, and sequentially records the recording information,
  An information recording method, wherein the next recording information from which the same contents are removed is carried forward.   Computer
  An acquisition means for acquiring each of the recording information of a plurality of recording information, part of which has the same content;
  Recording means for recording each of the acquired recording information;
  A first detection means for detecting the part of the boundary portion in each of the stored pre-specified recording information and the other recording information recorded thereafter;
  Function as second detection means for detecting whether or not the contents of the part are identical to each other based on the acquired detection result of the boundary part;
  The recording means refers to a parameter indicating recording information to be carried after the recording information is deleted, sequentially deletes the detected part of the same content, and sequentially records the recording information,
  An information recording program which functions as means for carrying forward the next recording information from which the same contents are removed.

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