JP2009159314A - Recording apparatus, playback apparatus, recording method, playback method and program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a recording apparatus, playback apparatus, recording method, playback method and program for easily reading a still picture recorded along with a moving image, when reproducing the moving image. <P>SOLUTION: The recording apparatus includes: an imaging information receiving section 110 for receiving imaging information data including a file name, on a first recording medium, of still picture data recorded on the first recording medium by an imaging apparatus in still picture imaging; and a medium recording section 150 for recording on a second recording medium moving image data sequentially output from an imaging element for each frame and imaging information data related to the moving image data. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a recording apparatus, a reproducing apparatus, a recording method, a reproducing method, and a program.

  Examples of the imaging apparatus include a camcorder that can mainly record moving images and a digital still camera (DSC) that can mainly record still images. In recent years, even a camcorder can record a still image, and even a digital still camera can record an image like a moving image by a continuous shooting function. However, there are still many usage methods in which a camcorder and a digital still camera are used together.

  On the other hand, Patent Document 1 discloses a technique for grouping a plurality of digital cameras by wireless communication and executing a common command within the group. According to the technique of Patent Document 1, a digital camera belonging to the same group receives a common command, so that a subject can be imaged under the same shooting conditions.

  Patent Document 2 discloses a technique related to a camera that exchanges shooting information (for example, user information, date / time information, position information, etc.) with other cameras in the vicinity at the time of shooting and records the exchanged shooting information. Yes. According to the technique of Patent Document 2, since photographing information is automatically exchanged wirelessly with a camera used by a stranger who is in the vicinity, exchange with other users can be achieved. You can make works that consist of simple shooting.

JP 2006-217357 A JP 2005-223814 A

  However, in the technique of Patent Document 2, a user (photographer) and a camera (equipment) can be associated with each other, and it is possible to exchange with other users. In the case where the same subject is shot by using a camcorder that can mainly shoot moving images and a digital still camera that can mainly shoot still images, no consideration has been given to exchange of shooting information. Then, based on the picture, you can determine which point in the scene shot and recorded by the camcorder was shot by the digital still camera, or conversely, where the still image exists based on the moving image. It was difficult to do. For this reason, there is a problem that a very large amount of work is required to organize videos and photographs recorded by a camcorder or a digital still camera.

  Therefore, the present invention has been made in view of the above problems, and an object of the present invention is to easily read out a still image recorded simultaneously with moving image recording when reproducing a moving image. A new and improved recording apparatus, reproducing apparatus, recording method, reproducing method, and program are provided.

  In order to solve the above-described problem, according to an aspect of the present invention, shooting information data including a file name in a first recording medium of still image data recorded on a first recording medium by an imaging device at the time of still image shooting is obtained. A shooting information receiving unit for receiving, moving image data sequentially output from the image sensor in units of frames, and a medium recording unit for recording shooting information data associated with the moving image data in a second recording medium; Is provided.

  In order to solve the above-described problem, according to another aspect of the present invention, moving image data sequentially output in units of frames from an image sensor and an image capturing device associated with moving image data at the time of still image shooting are first. A photographic information extraction unit for extracting photographic information data from a second recording medium in which photographic information data including a file name in the first recording medium of still image data recorded in the first recording medium is recorded; On the basis of this, there is provided a reproducing apparatus comprising a still image data reading unit that reads still image data corresponding to moving image data from a first recording medium.

  In order to solve the above-described problem, according to another aspect of the present invention, shooting including a file name in the first recording medium of still image data recorded on the first recording medium by the imaging device during still image shooting. Receiving the information data; and recording the moving image data sequentially output from the image sensor in units of frames and the shooting information data associated with the moving image data on a second recording medium. A recording method is provided.

  In order to solve the above-described problem, according to another aspect of the present invention, moving image data sequentially output in units of frames from an image sensor and an image capturing device associated with moving image data at the time of still image shooting are first. Extracting the shooting information data from the second recording medium in which the shooting information data including the file name in the first recording medium of the still image data recorded in the recording medium is recorded, and based on the shooting information data, And a step of reading still image data corresponding to the moving image data from the first recording medium.

  In order to solve the above-described problem, according to another aspect of the present invention, shooting including a file name in the first recording medium of still image data recorded on the first recording medium by the imaging device during still image shooting. Means for receiving information data, causing a computer to execute means for recording, on a second recording medium, moving image data sequentially output from the image sensor in units of frames and shooting information data associated with the moving image data A program is provided.

  In order to solve the above-described problem, according to another aspect of the present invention, moving image data sequentially output in units of frames from an image sensor and an image capturing device associated with moving image data at the time of still image shooting are first. Means for extracting shooting information data from a second recording medium in which shooting information data including a file name in the first recording medium of still image data recorded on the recording medium is recorded on the basis of the shooting information data A program is provided for causing a computer to execute means for reading still image data corresponding to image data from a first recording medium.

  According to the present invention, at the time of moving image reproduction, a still image recorded simultaneously with moving image recording can be easily read.

  Exemplary embodiments of the present invention will be described below in detail with reference to the accompanying drawings. In addition, in this specification and drawing, about the component which has the substantially same function structure, duplication description is abbreviate | omitted by attaching | subjecting the same code | symbol.

(First embodiment)
First, a camcorder 100 according to a first embodiment of the present invention will be described with reference to FIG. FIG. 1 is a block diagram showing a camcorder 100 according to this embodiment.

  The camcorder 100 is an imaging device (recording device) capable of recording video data, audio data, and the like on a recording medium 10 (second recording medium) such as a memory card. As shown in FIG. 1, for example, a camera 102, a camera signal processing unit 104, a communication unit 110, a formatting unit 112, an MPEG encoder 120, a microphone 130, an audio encoder 132, and an MPEG system encoder 140 The media recording unit 150.

  The camera signal processing unit 104 receives moving image data for each frame output from an imaging element of the camera 102 (for example, a sensor such as a charge coupled device (CCD) or a complementary metal oxide semiconductor (CMOS)). The camera signal processing unit 104 includes an AD converter that AD converts an input signal. The moving image data of the digital signal output from the camera signal processing unit 104 is sent to the MPEG encoder 120.

  The communication unit 110 is an example of a shooting information receiving unit, and receives shooting information from the digital still camera 200 on which shooting has been performed. The communication unit 110 may receive shooting information for each shooting by the digital still camera 200, or may receive a plurality of shooting information at once. The communication unit 100 sends the received shooting information to the formatting unit 112. The communication unit 110 transmits and receives data in, for example, IEEE 802.11a / b / g, Bluetooth format, or the like.

  The shooting information is information for uniquely determining an image shot by the digital still camera 200, for example, identification information of the digital still camera 200 (for example, information on model name, manufacturer name, owner, etc.). Or identification information (for example, information on memory capacity, product name, manufacturer name, owner, etc.) of the recording medium 12 (first recording medium) recorded by the digital still camera 200, and still image data on the recording medium 12 For example, a file name.

  The formatting unit 112 formats the shooting information received from the digital still camera 200 by the communication unit 110 and generates shooting information data that can be recorded by the MPEG encoder 120. The formatting unit 112 sends the generated shooting information data to the MPEG encoder 120.

  The MPEG encoder 120 compresses and encodes the moving image data sent from the camera signal processing unit 104 and the shooting information data sent from the formatting unit 112 into a moving image compression method compliant with the MPEG standard, and is obtained as a result. The encoded moving image data is sent to the MPEG system encoder 140. The shooting information data is inserted into the header of a frame in the MPEG bit stream corresponding to the time when the shooting information is sent from the digital still camera 200.

  The microphone 130 acquires the sound of the subject simultaneously with the moving image shooting by the camera 102 and sends it to the audio encoder 132. The audio encoder 132 includes an AD converter that AD converts an analog signal of the input sound. The audio encoder 132 compresses and encodes audio data into a compression scheme such as an AAC scheme. The audio encoder 132 sends the compressed and encoded audio data to the MPEG system encoder 140.

  The MPEG system encoder 140 processes the moving image data including the shooting information sent from the MPEG encoder 120 and the voice data sent from the voice encoder 132 into a file, and generates MPEG format file data. The MPEG system encoder 140 manages time stamps and records the moving image data and audio data on the recording medium 10 in order to ensure synchronization during reproduction. The moving image data, audio data, and shooting information data generated by the filing process are written to the recording medium 10 by the media recording unit 150.

  Although not shown, the imaging apparatus 100 is provided with a CPU. The CPU functions as an arithmetic processing device and a control device according to a program, and can control processing of each component provided in the imaging device 100. For example, the CPU controls data transmission from the MPEG system encoder 140 to the media recording unit 150 and recording of data on the recording medium by the media recording unit 150.

  The series of processing in the camcorder 100 may be processed by hardware or may be realized by software processing by a program on a computer.

  According to the camcorder 100 of this embodiment, shooting information can be acquired from the digital still camera 200 via the communication unit 110, and moving image data and audio data can be recorded on the recording medium 10 together with the acquired shooting information.

  Next, a digital still camera 200 according to the present embodiment will be described with reference to FIG. FIG. 2 is a block diagram showing the digital still camera 200 according to the present embodiment.

  The digital still camera 200 is an imaging device capable of recording still image data or the like on a recording medium 12 such as a memory card. As shown in FIG. 2, the digital still camera 200 includes, for example, a camera 202, a camera signal processing unit 204, a JPEG encoder 206, a media recording unit 208, a CPU 210, a photographing information acquisition unit 212, and a communication unit 214. Etc.

  The camera signal processing unit 204 receives still image data output from an imaging element of the camera 202 (for example, a sensor such as a charge coupled device (CCD) or a complementary metal oxide semiconductor (CMOS)). The camera signal processing unit 204 includes an AD converter that AD converts an input signal. The still image data of the digital signal output from the camera signal processing unit 204 is sent to the JPEG encoder 206.

  The JPEG encoder 206 performs compression encoding processing in JPEG format on the input still image data, and sends the compressed image data to the media recording unit 208. The media recording unit 208 records still image data on the recording medium 12.

  The CPU 210 functions as an arithmetic processing device and a control device according to a program, and can control processing of each component provided in the digital still camera 200. For example, the CPU 210 controls data transmission from the JPEG encoder 206 to the media recording unit 208 and data recording on the recording medium 12 by the media recording unit 208, for example.

  The shooting information acquisition unit 212 acquires shooting information regarding the camera 202, the recording medium 12, the user, and the like at the time of shooting the subject via the CPU 210. The shooting information acquisition unit 212 acquires shooting information every time a still image is shot. The acquired shooting information is temporarily stored and sent to the camcorder 100 via the communication unit 214. The communication unit 214 sends shooting information at the time of shooting by the digital still camera 200 to the camcorder. The shooting information may be transmitted for each shooting, or a plurality of shooting information may be transmitted at a time. The communication unit 214 transmits and receives data in IEEE 802.11a / b / g, Bluetooth format, or the like.

  A series of processing in the digital still camera 200 may be performed by hardware or may be realized by software processing by a program on a computer.

  According to the digital still camera 200 of this embodiment, shooting information at the time of shooting by the digital still camera 200 can be acquired for each shooting, and the acquired shooting information can be sent to the camcorder 100.

  Next, the playback device 300 according to the present embodiment will be described with reference to FIG. FIG. 3 is a block diagram showing the playback apparatus 300 according to this embodiment.

  The reproduction apparatus 300 is a reproduction apparatus that reads out moving image data and still image data recorded on the recording media 10 and 12 and reproduces a moving image and a still image. As shown in FIG. 3, the playback apparatus 300 includes, for example, a host CPU 302, a first media reading unit 304, a system decoder 306, an audio decoding unit 308, a video decoding unit 310, a shooting information extraction unit 312, A second media reading unit 314, a JPEG decoding unit 316, a MUX 320, an audio output unit 322, a video output unit 324, and the like are included.

  The host CPU 302 functions as an arithmetic processing device and a control device according to a program, and can control processing of each component provided in the playback device 300. For example, the host CPU 302 acquires moving image data and still image data recorded on the recording media 10 and 12.

  The first media reading unit 304 reads moving image data recorded on the recording medium 10. The first media reading unit 304 sends the read moving image data to the system decoder 306. The system decoder 306 temporarily stores the data read by the first media reading unit 306 and sends the data to the audio decoding unit 308 and the video decoding unit 310.

  The audio decoding unit 308 decodes the audio data that has been compression-encoded, and sends the decoded audio data to the audio output unit 322. The audio output unit 322 performs DA (digital analog) conversion on the transmitted data and outputs analog signal data to the outside. The video decoding unit 310 decodes the compressed and encoded moving image data, and sends the decoded moving image data to the MUX 320. In addition, the video decoding unit 310 sends shooting information to the shooting information extraction unit 312.

  The shooting information extraction unit 312 extracts shooting information from the data decoded by the video decoding unit 310. The extracted shooting information is sent to the MUX 210 via the host CPU 320, and is used when a moving image is reproduced.

  The second media reading unit 314 is an example of a still image data reading unit, and reads still image data recorded on the recording medium 12 based on the shooting information extracted by the shooting information extraction unit 312. The second media reading unit 314 sends the read still image data to the JPEG decoding unit 316. The JPEG decoding unit 316 decodes the compressed and encoded still image data, and sends the decoded still image data to the MUX 320.

  The MUX 320 sends the moving image data sent from the video decoding unit 310 and the still image data sent from the JPEG decoding unit 316 to the video output unit 262. The video output unit 324 performs DA (digital analog) conversion on the transmitted data and outputs analog signal data to the outside.

  According to the playback apparatus 300 of the present embodiment, when decoding moving image data to play back the moving image data recorded on the recording medium 10 by the camcorder 100, shooting information included in the data is extracted. When shooting information is included in a certain frame header, the playback device 300 plays back a still image or indicates its presence to the user to indicate that there is still image data shot by the digital still camera 200 at that time. Can let you know.

  According to this embodiment, in order to perform association at the time of reproduction of moving image data and still image data, when shooting a subject using both the camcorder 100 and the digital still camera 200 at an event such as an athletic meet, The relationship between the image data and the still image data becomes clear, and the management of data, which is a complicated task for the user, becomes easy.

  Next, with reference to FIG. 4, the relationship between the moving image data recorded by the camcorder 100 of the present embodiment and the still image data recorded by the digital still camera 200 will be described. FIG. 4 is an explanatory diagram showing the recording medium 12 on which moving image data and still image data to be recorded on the recording medium 10 by the camcorder 100 of the present embodiment are recorded.

  First, when a still image is shot with the digital still camera 200 of the present embodiment, shooting information about a still image shot with the digital still camera 200 is acquired, and the shooting information is transmitted to the camcorder 100 via the communication unit 214. Sent. When the camcorder 100 of this embodiment receives shooting information from the digital still camera 200 via the communication unit 110, the shooting information is recorded in the header of the frame in the MPEG bit stream. The header frame in which shooting information is recorded includes, for example, a frame corresponding to the time when a still image shooting operation is performed with the digital still camera 200, a frame corresponding to a time when a still image is encoded with the digital still camera 200, and a camcorder. Reference numeral 100 denotes a frame or the like corresponding to a point in time when a shooting information image is received from the digital still camera 200.

  In addition, since an MPEG bitstream can be provided with a user area into which user data can be inserted in each of sequence header, group_of_picture header, and picture header, shooting information is recorded in the area. For example, as illustrated in FIG. 4, shooting information regarding a still image shot by the digital still camera 200 is recorded in a header (indicated by a thick line) of a certain frame among a plurality of frames.

  The shooting information includes information that can uniquely determine a still image shot by the digital still camera 200, such as identification information of the digital still camera 200 (for example, model name, manufacturer name, owner information, etc.) , Identification information of the recording medium 12 recorded by the digital still camera 200 (for example, memory capacity, product name, manufacturer name, owner information, etc.), file name of still image data in the recording medium 12, and the like are included. . Therefore, it is possible to specify at which position of which recording medium 12 the still image is recorded at the time of moving image reproduction.

  Further, if the file name is managed by the file name including the identification information of the digital still camera 200 and the recording medium 12, still image data can be read even when the recording medium 12 is moved to another recording medium (for example, a hard disk). It can be carried out. At this time, the reproducing apparatus 300 shown in FIG. 3 does not read still image data from the recording medium 12, but reads still image data from a recording medium such as a hard disk (not shown).

  Next, with reference to FIG. 5, an example of reproducing moving images and still images recorded by the camcorder 100 and the digital still camera 200 according to the present embodiment will be described. FIG. 5 is an explanatory diagram illustrating a state in which a moving image and a still image are displayed on the display device 330.

  The display device 330 is connected to, for example, the audio output unit 322 and the video output unit 324 of the playback device 300, and can play back moving images and sounds and display still images. For example, the moving image playback screen 332 is displayed widely at the top of the display device 330, and the plurality of still images 338 are displayed as thumbnails at the bottom of the display device 330. When a still image exists at the corresponding time during moving image reproduction, for example, a “still image present” display 336 is displayed. Then, the corresponding still image may be specified from the still image thumbnail, or the still image may be enlarged and displayed.

  As described above, conventionally, it has been difficult to specify which still image among a plurality of recorded still images is a still image recorded at which time. According to the information, a still image can be easily read out during moving image reproduction. Note that the reproduction example of the moving image and the still image of the present invention is not limited to the above example, and may be another method that can specify the still image.

(Second Embodiment)
Next, a camcorder 400 according to the second embodiment of the present invention will be described. FIG. 6 is a block diagram showing a camcorder 400 according to this embodiment. In the present embodiment, each component other than the filing unit 442 is the same as that in the first embodiment, and a detailed description thereof will be omitted.

  Unlike the camcorder 100 of the first embodiment, the camcorder 400 of this embodiment does not record shooting information in the header of the frame of the MPEG bit stream, but records shooting information separately from moving image data.

  As shown in FIG. 6, the formatting unit 112 sends shooting information to the file forming unit 442, and the MPEG encoder 140 sends moving image data and audio data to the file forming unit 442. Then, the filing unit 442 converts the data regarding the shooting information, the moving image data, and the audio data into a file. The file-processed data is recorded on the recording medium 10 via the media recording unit 150.

  Next, the playback apparatus 500 according to the present embodiment will be described. FIG. 7 is a block diagram showing a playback apparatus 500 according to this embodiment. In the present embodiment, the components other than the file extraction unit 510 are the same as those in the first embodiment, and thus detailed description thereof is omitted.

  Unlike the playback device 300 of the first embodiment, the playback device 500 of this embodiment is not separately extracted from the shooting information recorded in the header of the frame of the MPEG bitstream, but is recorded separately from the moving image data. The shooting information is read from the file in which the shooting information is recorded.

  As shown in FIG. 7, the file extraction unit 510 stores shooting information data among files recorded with moving image data, audio data, and shooting information data read from the recording medium 10 by the first media reading unit 304. Extract the file. Then, a still image is read based on the shooting information recorded in the extracted file.

  As described above, according to the present embodiment, even if shooting information is not recorded in the header of the MPEG bit stream of moving image data, a still image corresponding to a movie during playback can be obtained by referring to a file related to other shooting information. Images can be read out. Note that in the file in which shooting information data is recorded, each shooting information includes time-related information such as a shooting time in order to synchronize a still image and a moving image.

  The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited to such examples. It is obvious that a person having ordinary knowledge in the technical field to which the present invention pertains can come up with various changes or modifications within the scope of the technical idea described in the claims. Of course, it is understood that these also belong to the technical scope of the present invention.

1 is a block diagram showing a camcorder according to a first embodiment of the present invention. FIG. 2 is a block diagram showing a digital still camera according to the same embodiment. It is a block diagram which shows the reproducing | regenerating apparatus concerning the embodiment. It is explanatory drawing which shows the recording medium with which the moving image data and still image data which the camcorder of the embodiment records on a recording medium were recorded. It is explanatory drawing which shows the state by which the moving image and the still image were displayed on the display apparatus. It is a block diagram which shows the camcorder which concerns on the 2nd Embodiment of this invention. It is a block diagram which shows the reproducing | regenerating apparatus concerning the embodiment.

Explanation of symbols

10, 12 Recording medium 100 Camcorder 102, 202 Camera 104, 204 Camera signal processing unit 110, 214 Communication unit 112 Formatting unit 120 MPEG encoder 130 Microphone 132 Audio encoder 140 MPEG system encoder 150, 208 Media recording unit 200 Digital still camera 206 JPEG encoder 210 CPU
212 shooting information acquisition unit 214 communication unit 300 playback device 302 host CPU
304 First Media Reading Unit 306 System Decoder 308 Audio Decoding Unit 310 Video Decoding Unit 312 Shooting Information Extraction Unit 314 Second Media Reading Unit 316 JPEG Decoding Unit 320 MUX
322 Audio output unit 324 Video output unit 442 File conversion unit 510 File extraction unit

Claims (6)

A shooting information receiving unit for receiving shooting information data including a file name in the first recording medium of still image data recorded on the first recording medium by the imaging device at the time of still image shooting;
A medium recording unit for recording the moving image data sequentially output from the image sensor in units of frames and the shooting information data associated with the moving image data on a second recording medium;
A recording apparatus comprising: File names in the first recording medium of the moving image data sequentially output from the image sensor in units of frames and still image data associated with the moving image data and recorded on the first recording medium by the imaging device at the time of still image shooting A photographic information extraction unit that extracts the photographic information data from a second recording medium on which photographic information data including
A still image data reading unit that reads the still image data corresponding to the moving image data from the first recording medium based on the shooting information data;
A playback apparatus comprising: Receiving imaging information data including a file name in the first recording medium of still image data recorded on the first recording medium by the imaging device at the time of still image shooting;
Recording, on a second recording medium, moving image data sequentially output from the image sensor in units of frames, and the shooting information data associated with the moving image data;
A recording method comprising: File names in the first recording medium of the moving image data sequentially output from the image sensor in units of frames and still image data associated with the moving image data and recorded on the first recording medium by the imaging device at the time of still image shooting Extracting the shooting information data from a second recording medium on which shooting information data including
Reading the still image data corresponding to the moving image data from the first recording medium based on the shooting information data;
A reproduction method comprising: Means for receiving shooting information data including a file name in the first recording medium of still image data recorded on the first recording medium by the imaging apparatus during still image shooting;
Means for recording, on a second recording medium, moving image data sequentially output from the image sensor in units of frames, and the shooting information data associated with the moving image data;
A program that causes a computer to execute. File names in the first recording medium of the moving image data sequentially output from the image sensor in units of frames and still image data associated with the moving image data and recorded on the first recording medium by the imaging device at the time of still image shooting Means for extracting the photographing information data from a second recording medium on which photographing information data including
Means for reading out the still image data corresponding to the moving image data from the first recording medium based on the shooting information data;
A program that causes a computer to execute.

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