Source: http://www.google.com/patents/US7577337?ie=ISO-8859-1&dq=5,781,788
Timestamp: 2015-01-28 06:45:47
Document Index: 340924429

Matched Legal Cases: ['art 117', 'art 121', 'art 116', 'art 121', 'art.\n2', 'art.\n6', 'art.\n7', 'art 100', 'art 101', 'art 121', 'art 100', 'art 101', 'art 104', 'art 105', 'art 106', 'art 107', 'art 100', 'art 108', 'art 107', 'art 230', 'art 121', 'art 233', 'art 121', 'art 107', 'art 231', 'art 232', 'art 130', 'art 131', 'art 132', 'art 110', 'art 131', 'art 131', 'art 116', 'art 120', 'art 121']

Patent US7577337 - Audio/video data recording/reproducing device and method, and audio/video ... - Google PatentsSearch Images Maps Play YouTube News Gmail Drive More »Sign inAdvanced Patent SearchPatentsAn audio/video data recording/reproducing device is provided that allows all video and audio signals, which can be displayed by a display of the audio/video data recording/reproducing device proper, to be output to an exterior through a digital interface. Such audio/video signals are in the forms of,...http://www.google.com/patents/US7577337?utm_source=gb-gplus-sharePatent US7577337 - Audio/video data recording/reproducing device and method, and audio/video data reproducing device and methodAdvanced Patent SearchPublication numberUS7577337 B2Publication typeGrantApplication numberUS 10/381,867PCT numberPCT/JP2001/008958Publication dateAug 18, 2009Filing dateOct 11, 2001Priority dateOct 12, 2000Fee statusPaidAlso published asCN1470128A, CN100336388C, EP1339233A1, EP1339233A4, US20030170009, WO2002032130A1Publication number10381867, 381867, PCT/2001/8958, PCT/JP/1/008958, PCT/JP/1/08958, PCT/JP/2001/008958, PCT/JP/2001/08958, PCT/JP1/008958, PCT/JP1/08958, PCT/JP1008958, PCT/JP108958, PCT/JP2001/008958, PCT/JP2001/08958, PCT/JP2001008958, PCT/JP200108958, US 7577337 B2, US 7577337B2, US-B2-7577337, US7577337 B2, US7577337B2InventorsMasanori Itoh, Masafumi ShimotashiroOriginal AssigneePanasonic CorporationExport CitationBiBTeX, EndNote, RefManPatent Citations (14), Non-Patent Citations (1), Referenced by (1), Classifications (60), Legal Events (3) External Links: USPTO, USPTO Assignment, EspacenetAudio/video data recording/reproducing device and method, and audio/video data reproducing device and methodUS 7577337 B2Abstract An audio/video data recording/reproducing device is provided that allows all video and audio signals, which can be displayed by a display of the audio/video data recording/reproducing device proper, to be output to an exterior through a digital interface. Such audio/video signals are in the forms of, for example, files as recorded including a moving picture file, a still picture file, and a file resulting from synthesization of a moving picture file with a still picture file. When the digital interface of the recording/reproducing device is connected to a digital TV, a synthesized signal from a synthesizing part 117, after being encoded into an MPEG-TS in an encoder 103, is output from a 1394 interface part 121. When the digital interface is connected to another editor or recording device, a recording signal from a reproducing part 116 is output as it is from the 1394 interface part 121. Images(5) Claims(12)
1. An audio/video data recording/reproducing device, comprising:
a compressed data output part that outputs compressed data that has been recorded to an external device through a digital interface;
a reproduction signal output part that outputs a synthesized signal after being subjected to compression, which is obtained by expanding the compressed data that has been recorded to generate an audio/video signal, then further adding thereto another audio/video signal to generate a combined signal, and subjecting the combined signal to compression to provide the synthesized signal, to the external device through the digital interface;
a recording part that records the audio/video signal by compression; and
a switching part that switches between an output from the compressed data output part and an output from the reproduction signal output part.
2. The audio/video data recording/reproducing device according to claim 1, wherein the compressed data that has been recorded is in a format of an MPEG transport stream, the compressed data output part outputs the MPEG transport stream to the external device, and the reproduction signal output part outputs to the external device the synthesized signal after being subjected to digital video (DV) compression.
3. The audio/video data recording/reproducing device according to claim 1, wherein the compressed data that has been recorded is in a format of an MPEG transport stream, the compressed data output part outputs the MPEG transport stream to the external device, and the reproduction signal output part outputs to the external device, the synthesized signal after being subjected to compression into an MPEG transport stream consisting of an intra-frame prediction encoded image (I picture) alone.
4. An audio/video data reproducing device, comprising:
a reproduction signal output part that outputs a synthesized signal after being subjected to compression, which is obtained by expanding the compressed data that has been recorded to generate a reproduction signal, then further adding thereto another reproduction signal to generate a combined signal, and subjecting the combined signal to compression to provide the synthesized signal, to the external device through the digital interface; and
5. An audio/video data recording/reproducing device, comprising:
a transmitting part that transmits an MPEG-2 transport stream;
a read-out part that reads out the MPEG-2 transport stream that has been recorded on a recording medium;
a compressing part that compresses an audio/video signal to generate the MPEG-2 transport stream;
an expanding and synthesizing part that expands the MPEG-2 transport stream to generate the audio/video signal and further synthesizes the audio/video signal with another audio/video signal;
a digital interface part that allows the MPEG-2 transport stream to be output to an external device; and
a recording part that records the MPEG-2 transport stream on the recording medium, wherein when reproducing the audio/video signal, switching is performed between output of the MPEG-2 transport stream through the read-out part, the transmitting part and the digital interface part and output of the MPEG-2 transport stream through the read-out part, the transmitting part, the expanding and synthesizing part, the compressing part, the transmitting part and the digital interface part, and when recording the audio/video signal, the MPEG-2 transport stream is recorded through the compressing part, the transmitting part and the recording part.
6. An audio/video data reproducing device, comprising:
an expanding and synthesizing part that expands the MPEG-2 transport stream to generate the audio/video signal and further synthesizes the audio/video signal with another audio/video signal; and
a digital interface part that allows the MPEG-2 transport stream to be output to an external device, wherein switching is performed between output of the MPEG-2 transport stream through the read-out part, the transmitting part and the digital interface part and output of the MPEG-2 transport stream through the read-out part, the transmitting part, the expanding and synthesizing part, the compressing part, the transmitting part and the digital interface part.
7. A method of recording/reproducing audio/video data, comprising the steps of:
outputting compressed data that has been recorded to an external device through a digital interface;
outputting a reproduction signal, in which a synthesized signal after being subjected to compression, which is obtained by expanding the compressed data that has been recorded to generate an audio/video signal, then further adding thereto another audio/video signal to generate a combined signal, and subjecting the combined signal to compression to provide the synthesized signal, is output to the external device through the digital interface;
recording an audio/video signal by compression; and
switching between output in the step of outputting the compressed data, and output in the step of outputting the reproduction signal.
8. The method of recording/reproducing audio/video data according to claim 7, wherein the compressed data that has been recorded is in a format of an MPEG transport stream, in the step of outputting the compressed data, the MPEG transport stream is output to the external device, and in the step of outputting the reproduction signal, the synthesized signal after being subjected to digital video (DV) compression is output to the external device.
9. The method of recording/reproducing audio/video data according to claim 7, wherein the compressed data that has been recorded is in a format of an MPEG transport stream, in the step of outputting the compressed data, the MPEG transport steam is output to the external device, and in the step of outputting the reproduction signal, the synthesized signal after being subjected to compression into an MPEG transport stream consisting of an intra-frame prediction encoded image (I picture) alone is output to the external device.
10. A method of reproducing audio/video data, comprising the steps of:
outputting a reproduction signal, in which a synthesized signal after being subjected to compression, which is obtained by expanding the compressed data that has been recorded to generate a reproduction signal, then further adding thereto another reproduction signal to generate a combined signal, and subjecting the combined signal to compression to provide the synthesized signal, is output to the external device through the digital interface; and
switching between output in the step of outputting the compressed data and output in the step of outputting the reproduction signal.
11. A method of recording/reproducing audio/video data, comprising the steps of:
transmitting an MPEG-2 transport stream;
reading out the MPEG-2 transport stream that has been recorded on a recording medium;
compressing an audio/video signal to generate the MPEG-2 transport stream; expanding the MPEG-2 transport stream to generate the audio/video signal and further synthesizing the audio/video signal with another audio/video signal;
outputting the MPEG-2 transport stream to an external device through a digital interface; and
recording the MPEG-2 transport stream on the recording medium, wherein when reproducing the audio/video signal, switching is performed between output of the MPEG-2 transport steam through the steps of reading out, transmitting, and outputting and output of the MPEG-2 transport stream through the steps of reading out, transmitting, expanding and synthesizing, compressing, transmitting, and outputting, and when recording the video/audio signal, the MPEG-2 transport stream is recorded through the steps of compressing, transmitting, and recording.
12. A method of reproducing audio/video data, comprising the steps of:
compressing an audio/video signal to generate the MPEG-2 transport stream;
expanding the MPEG-2 transport stream to generate the audio/video signal and further synthesizing the audio/video signal with another audio/video signal; and
outputting the MPEG-2 transport stream to an external device through a digital interface, wherein switching is performed between output of the MPEG-2 transport stream through the steps of reading out, transmitting, and outputting and output of the MPEG-2 transport stream through the steps of reading out, transmitting, expanding and synthesizing, compressing, transmitting, and outputting. Description
TECHNICAL FIELD The present invention relates to an audio/video data recording/reproducing device and method for recording by compression, audio and video in the forms of a moving picture, a still picture and the like on a recording medium such as an optical disk or the like, and to an audio/video data reproducing device and method for reproducing by expansion, audio and video data recorded on a recording medium.
BACKGROUND ART An audio/video data recording/reproducing device has been introduced that records by compression, moving pictures and still pictures on a recording medium such as an optical disk or the like. Moving pictures are recorded in a format of an MPEG file consisting of an MPEG system stream by MPEG-2 (system) compression defined in ISO/IEC 13818-1. Still pictures are recorded in a format of a JPEG file after being subjected to JPEG compression. A video signal in the MPEG file is compressed according to the MPEG-2 (Video) standard defined in ISO/IEC 13818-3, while an audio signal is subjected to MPEG-1 Layer 2 compression, MPEG-2 ACC (Advanced Audio Cording), AC3 compression or the like and arranged in the MPEG system stream.
FIG. 2 is a block diagram showing an example of a configuration of a conventional audio/video data recording/reproducing device. A switching operation allows a user to perform recording of moving pictures input from a video signal input part 100 and an audio signal input part 101 and further to perform recording of transport streams input from a 1394 interface part 121. When recording a video signal and an audio signal of a moving picture, the signals input from the video signal input part 100 and the audio signal input part 101 are compressed in a video compressing part 104 and an audio compressing part 105, respectively. Then, a transport stream is created in a transport stream assembling part 106 and written on a phase change optical disk 140 via a recording part 107 and a pickup 141. Meanwhile, a video signal of a still picture input from the video signal input part 100 is written on the phase change optical disk 140 via a still picture compressing part 108, the recording part 107 and the pickup 141. These operations are controlled by a recording controlling part 230. Management of an MPEG file and a JPEG file that are to be recorded is performed according to the UDF (Universal Disk Format) file system. When a command to record an MPEG transport stream (MPEG-TS) from the 1394 interface part 121 is issued, a 1394 recording controlling part 233 records the transport stream input from the exterior through the 1394 interface part 121 on the phase change optical disk 140 through the recording part 107 and the pickup 141.
Furthermore, according to conditions set by a user, the reproduction controlling part 231 and the reproduction controlling part 232 for a recorder allow a moving picture file and a still picture file to be displayed in superimposed relationship in a common screen at arbitrary timing and in arbitrary sizes, respectively. The set conditions are preserved on the phase change optical disk 140 in a text file format based on SMIL (Synchronized Multimedia Integration Language) language that has been under the process of standardization by W3C (World Wide Web Consortium).
DISCLOSURE OF THE INVENTION With the foregoing in mind, it is an object of the present invention to provide an audio/video data recording/reproducing device and method and an audio/video data reproducing device and method for allowing all video and audio signals that can be displayed by a display of the audio/video data recording/reproducing device proper to be output to the exterior through a digital interface. Such video and audio signals are in the forms of, for example, files as recorded including a moving picture file, a still picture file, and a file resulting from synthesizing a moving picture file with a still picture file.
In order to achieve the aforementioned objects, a first audio/video data recording/reproducing device according to the present invention includes a compressed data output part that outputs compressed data that has been recorded to an external device through a digital interface, a reproduction signal output part that outputs a synthesized signal after being subjected to compression, which is obtained by generating an audio/video signal from the compressed data that has been recorded and further adding thereto another audio/video signal, to the external device through the digital interface, a recording part that records the audio/video signal by compression, and a switching part that switches between the compressed data from the compressed data output part and a reproduction signal from the reproduction signal output part.
In order to achieve the aforementioned objects, a first audio/video data reproducing device according to the present invention includes a compressed data output part that outputs compressed data that has been recorded to an external device through a digital interface, a reproduction signal output part that outputs a synthesized signal after being subjected to compression, which is obtained by generating a reproduction signal from the compressed data that has been recorded and further adding thereto another signal, to the external device through the digital interface, and a switching part that switches between an output from the compressed data output part and an output from the reproduction signal output part.
In order to achieve the aforementioned objects, a second audio/video data recording/reproducing device according to the present invention includes a transmitting part that transmits an MPEG-2 transport stream, a read-out part that reads out the MPEG-2 transport stream that has been recorded on a recording medium, a compressing part that compresses an audio/video signal to generate the MPEG-2 transport stream, an expanding and synthesizing part that expands the MPEG-2 transport stream to generate the audio/video signal and further synthesizes the audio/video signal with another audio/video signal, a digital interface part that allows the MPEG-2 transport stream to be output to an external device, and a recording part that records the MPEG-2 transport stream on the recording medium. When reproducing the audio/video signal, switching is performed between output of the MPEG-2 transport stream through the read-out part, the transmitting part and the digital interface part and output of the MPEG-2 transport stream through the read-out part, the transmitting part, the expanding and synthesizing part, the compressing part, the transmitting part and the digital interface part. Further, when recording the audio/video signal, the MPEG-2 transport stream is recorded through the compressing part, the transmitting part and the recording part.
In order to achieve the aforementioned objects, a second audio/video data reproducing device according to the present invention includes a transmitting part that transmits an MPEG-2 transport stream, a read-out part that reads out the MPEG-2 transport stream that has been recorded on a recording medium, a compressing part that compresses an audio/video signal to generate the MPEG-2 transport stream, an expanding and synthesizing part that expands the MPEG-2 transport stream to generate the audio/video signal and further synthesizes the audio/video signal with another audio/video signal, and a digital interface part that allows the MPEG-2 transport stream to be output to an external device. Switching is performed between output of the MPEG-2 transport stream through the read-out part, the transmitting part and the digital interface part and output of the MPEG-2 transport stream through the read-out part, the transmitting part, the expanding and synthesizing part, the compressing part, the transmitting part and the digital interface part.
In order to achieve the aforementioned objects, a first method of recording/reproducing audio/video data according to the present invention includes the steps of: outputting compressed data that has been recorded to an external device through a digital interface; outputting a reproduction signal, in which a synthesized signal after being subjected to compression, which is obtained by generating a reproduction signal from the compressed data that has been recorded and further adding thereto another signal, is output to the external device through the digital interface; recording an audio/video signal by compression; and switching between output in the step of outputting the compressed data and output in the step of outputting the reproduction signal.
In the first method of recording/reproducing audio/video data, preferably, the compressed data that has been recorded is in a format of an MPEG transport stream, in the step of outputting the compressed data, the MPEG transport stream is output to the external device, and in the step of outputting the reproduction signal, the synthesized signal after being subjected to digital video (DV) compression is output to the external device.
In order to achieve the aforementioned objects, a first method of reproducing audio/video data according to the present invention includes the steps of: outputting compressed data that has been recorded to an external device through a digital interface; outputting a reproduction signal, in which a synthesized signal after being subjected to compression, which is obtained by generating an audio/video signal from the compressed data that has been recorded and further adding thereto another audio/video signal, is output to the external device through the digital interface; and switching between output in the step of outputting the compressed data and output in the step of outputting the reproduction signal.
In order to achieve the aforementioned objects, a second method of recording/reproducing audio/video data according to the present invention includes the steps of: transmitting an MPEG-2 transport stream; reading out the MPEG-2 transport stream that has been recorded on a recording medium; compressing an audio/video signal to generate the MPEG-2 transport stream; expanding the MPEG-2 transport stream to generate the audio/video signal and further synthesizing the audio/video signal with another audio/video signal; outputting the MPEG-2 transport stream to an external device through a digital interface; and recording the MPEG-2 transport stream on the recording medium. When reproducing the audio/video signal, switching is performed between output of the MPEG-2 transport stream through the steps of reading out, transmitting, and outputting and output of the MPEG-2 transport stream through the steps of reading out, transmitting, expanding and synthesizing, compressing, transmitting, and outputting. Further, when recording the video/audio signal, the MPEG-2 transport stream is recorded through the steps of compressing, transmitting, and recording.
In order to achieve the aforementioned objects, a second method of reproducing audio/video data according to the present invention includes the steps of: transmitting an MPEG-2 transport stream; reading out the MPEG-2 transport stream that has been recorded on a recording medium; compressing an audio/video signal to generate the MPEG-2 transport stream; expanding the MPEG-2 transport stream to generate the audio/video signal and further synthesizing the audio/video signal with another audio/video signal; and outputting the MPEG-2 transport stream to an external device through a digital interface. Switching is performed between output of the MPEG-2 transport stream through the steps of reading out, transmitting, and outputting and output of the MPEG-2 transport stream through the steps of reading out, transmitting, expanding and synthesizing, compressing, transmitting, and outputting.
In order to achieve the aforementioned objects, a third audio/video data reproducing device according to the present invention includes a reproduction signal output part that outputs a still picture signal after being subjected to compression into an MPEG transport stream, which is generated from compressed data that has been recorded, to an external device through a digital interface. In the device, the number of pixels of a video image constituting the MPEG transport stream is changed according to the number of pixels of the still picture signal.
In order to achieve the aforementioned objects, a third method of reproducing audio/video data according to the present invention includes the step of outputting a reproduction signal, in which a still picture signal after being compressed into an MPEG transport stream, which is generated from compressed data that has been recorded, is output to an external device through a digital interface. In the method, the number of pixels of a video image constituting the MPEG transport stream is changed according to the number of pixels of the still picture signal.
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing an example of a configuration of an audio/video data recording/reproducing device according to Embodiment 1 of the present invention.
FIG. 3 is a schematic block diagram showing a connection mode between the audio/video data recording/reproducing device and a digital TV.
FIG. 4 is a schematic block diagram showing a connection mode between the audio/video data recording/reproducing device and a digital TV.
BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described by way of an embodiment with reference to the appended drawings.
Embodiment 1 FIG. 1 is a block diagram showing an example of a configuration of an audio/video data recording/reproducing device ISO according to Embodiment 1 of the present invention. This embodiment differs from the conventional device shown in FIG. 2 in that a switch (SW) 102 is added and in that a recording controlling part 130, a reproduction controlling part 131 and a reproduction controlling part 132 for a recorder function differently from those shown in FIG. 2. Other functional parts have the same functions as those described with regard to the conventional device, and thus the following description is directed mainly to the differences.
On the other hand, when operated by the user so that the recorded MPEG file can be reproduced in the video displaying part 110, and at the same time, dubbed by establishing connection to the AV-HDD 303 shown in FIG. 4 through a digital interface, the reproduction controlling part 131 performs the following operation. That is, by the reproduction controlling part 131, a transport stream in the MPEG file that has been read out through the pickup 141 and the reproducing part 116 is output through an output timing generating part 120 and the 1394 interface part 121.
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386/356, 725/116, 348/738, 382/236, 725/31, 369/124.09, 386/231, 369/53.22, 386/239, 348/484, 369/47.24, 725/63International ClassificationH04N7/26, H04N5/60, H04N5/40, H04N5/272, H04N5/91, H04N7/20, G11B7/00, H04N9/79, H04N5/926, H04N5/00, G11B15/52, G11B27/034, H04N7/00, H04N5/775, H04N9/82, G06K9/36, H04N9/806, H04N7/173, H04N5/85, H04N9/804, H04N7/167, H04L12/28Cooperative ClassificationH04N9/8063, H04N9/8227, H04N21/43632, H04N9/7921, H04L12/2803, G11B2220/216, H04N21/4135, H04N5/9261, H04N9/8042, H04N5/85, G11B27/034, H04L12/2805, H04N5/775, H04L12/2809, G11B2220/20European ClassificationH04N21/4363C, H04N21/41P7, G11B27/034, H04L12/28H1, H04N5/926B, H04N9/804BLegal EventsDateCodeEventDescriptionJan 23, 2013FPAYFee paymentYear of fee payment: 4Nov 21, 2008ASAssignmentOwner name: PANASONIC CORPORATION, JAPANFree format text: CHANGE OF NAME;ASSIGNOR:MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.;REEL/FRAME:021897/0624Effective date: 20081001Owner name: PANASONIC CORPORATION,JAPANFree 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