Classifications

• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
  • H04N5/00—Details of television systems
  • H04N5/76—Television signal recording
  • H04N5/91—Television signal processing therefor
  • H04N5/913—Television signal processing therefor for scrambling ; for copy protection
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
  • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
  • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
  • H04N21/41—Structure of client; Structure of client peripherals
  • H04N21/4104—Peripherals receiving signals from specially adapted client devices
  • H04N21/4126—The peripheral being portable, e.g. PDAs or mobile phones
  • H04N21/41265—The peripheral being portable, e.g. PDAs or mobile phones having a remote control device for bidirectional communication between the remote control device and client device
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
  • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
  • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
  • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
  • H04N21/432—Content retrieval operation from a local storage medium, e.g. hard-disk
  • H04N21/4325—Content retrieval operation from a local storage medium, e.g. hard-disk by playing back content from the storage medium
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
  • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
  • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
  • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
  • H04N21/433—Content storage operation, e.g. storage operation in response to a pause request, caching operations
  • H04N21/4334—Recording operations
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
  • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
  • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
  • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
  • H04N21/44—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs
  • H04N21/4402—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs involving reformatting operations of video signals for household redistribution, storage or real-time display
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
  • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
  • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
  • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
  • H04N21/44—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs
  • H04N21/4402—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs involving reformatting operations of video signals for household redistribution, storage or real-time display
  • H04N21/44029—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs involving reformatting operations of video signals for household redistribution, storage or real-time display for generating different versions
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
  • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
  • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
  • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
  • H04N21/44—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs
  • H04N21/4408—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs involving video stream encryption, e.g. re-encrypting a decrypted video stream for redistribution in a home network
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
  • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
  • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
  • H04N21/45—Management operations performed by the client for facilitating the reception of or the interaction with the content or administrating data related to the end-user or to the client device itself, e.g. learning user preferences for recommending movies, resolving scheduling conflicts
  • H04N21/462—Content or additional data management, e.g. creating a master electronic program guide from data received from the Internet and a Head-end, controlling the complexity of a video stream by scaling the resolution or bit-rate based on the client capabilities
  • H04N21/4627—Rights management associated to the content
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
  • H04N5/00—Details of television systems
  • H04N5/76—Television signal recording
  • H04N5/91—Television signal processing therefor
  • H04N5/913—Television signal processing therefor for scrambling ; for copy protection
  • H04N2005/91357—Television signal processing therefor for scrambling ; for copy protection by modifying the video signal
  • H04N2005/91364—Television signal processing therefor for scrambling ; for copy protection by modifying the video signal the video signal being scrambled
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
  • H04N5/00—Details of television systems
  • H04N5/76—Television signal recording
  • H04N5/765—Interface circuits between an apparatus for recording and another apparatus
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
  • H04N5/00—Details of television systems
  • H04N5/76—Television signal recording
  • H04N5/765—Interface circuits between an apparatus for recording and another apparatus
  • H04N5/775—Interface circuits between an apparatus for recording and another apparatus between a recording apparatus and a television receiver
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
  • H04N5/00—Details of television systems
  • H04N5/76—Television signal recording
  • H04N5/907—Television signal recording using static stores, e.g. storage tubes or semiconductor memories
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
  • H04N9/00—Details of colour television systems
  • H04N9/79—Processing of colour television signals in connection with recording
  • H04N9/7921—Processing of colour television signals in connection with recording for more than one processing mode

Definitions

• the present invention relates to a playback control method, a playback device, and a television device related to playback of program data, and more particularly to a playback control method for copyright-protected content data.
• Japanese Patent Application Laid-Open No. 2002-290905 discloses a method for safely and reliably moving content.
• Japanese Patent Laid-Open No. 2002-290905 states that “a transport stream can be reliably moved to an external storage device (copying and erasure of original data), and copying can be permitted halfway. Disclosed are a digital broadcast receiving apparatus and an information recording / reproducing apparatus capable of preventing
• Japanese Patent Application Laid-Open No. 11-146378 discloses a “digital broadcast system that enables storage and viewing of digital broadcast data that is prohibited from being recorded”.
• Japanese Unexamined Patent Application Publication No. 2002-290905 is based on the premise that the entire content of the copy source is erased.
• Japanese Laid-Open Patent Publication No. 2002-319227 does not cover content that cannot be copied, which is a technique for temporarily copying the entire content that can be copied for only one generation.
• Japanese Patent Laid-Open No. 11-146378 the received non-copyable content is recorded after being deteriorated, so that it cannot be viewed with high image quality.
• a broadcast program is broadcast as copyable content for only one generation, and becomes non-copyable content once recorded by a receiving device or recording device. After that, taking a knock-up, creating a digest, and viewing with other devices makes it difficult to do what was previously possible, making it inconvenient for the viewer.
• the content recorded on the television device was viewed on a mobile phone, and the content was transferred to the Internet while the content was left on the recording device of the receiver. It is also possible to send the message.
• broadband content is used for content such as television programs including moving images. For this reason, for example, there is a problem that the mobile phone bandwidth is expensive if there is a problem with image quality.
• An object of the present invention is to enable content to be viewed on a second device while protecting the content.
• the playback control method of the present invention converts the first program data stored in the first device into second program data that can be played back by the second device.
• the playback control method of the present invention is the content data playback control method, wherein the first content data stored in the first device is the second content data that can be played back by the second device.
• a conversion step for converting the first content data into a second device, a transmission step for transmitting the converted second content data to the second device, and the first content data stored in the first device can be reproduced as original.
• the playback device of the present invention includes a conversion means for converting the first program data stored in the playback device into second program data that can be viewed on the second device, and the converted second program data.
• the television device of the present invention is characterized by comprising a receiving unit for receiving a program, a data storage unit for storing the received program as program data, and the playback device.
• FIG. 1 is a block diagram of a TV apparatus according to the present embodiment.
• FIG. 2 is a block diagram of a mobile terminal device according to the present embodiment.
• FIG. 3 is a diagram of a control structure in the TV apparatus of the present embodiment.
• FIG. 4 is a diagram of the structure of broadcast data in the present example.
• FIG. 5 is a flowchart for explaining an operation of moving program data from the TV apparatus 100 of the present embodiment.
• FIG. 6 is a flowchart for explaining the re-moving operation of program data from the mobile terminal 200 of the present embodiment.
• FIG. 7 is a flowchart showing an operation for enabling viewing of low-resolution program data on the TV device 100 and the portable terminal 200 of the present embodiment.
• FIG. 8 is a flowchart showing an operation of enabling viewing of low-resolution program data according to the present embodiment.
• TV device capable of receiving television broadcasting (TV broadcasting)
• portable terminal 200 a television device (TV device) 100 capable of receiving television broadcasting (TV broadcasting)
• TV broadcasting television broadcasting
• portable terminal 200 a portable terminal
• TV device 100 capable of receiving broadcast will be described with reference to FIG.
• FIG. 1 is a block diagram for explaining a TV apparatus 100 that works on the first embodiment.
• the TV device 100 includes a tuner unit 101, a data separation unit 102, an AV decoding unit 103, an audio control unit 121, an audio output unit 122, a graphic control unit 131, a display synthesis control unit 133, a display unit 134, a memory unit 151, A data storage unit 152, an interface unit 161, an external memory connection unit 162, an Internet connection unit 171, a remote control control unit 181 and a system control unit 191 are also configured.
• the tuner unit 101 amplifies the received high-frequency TV signal of the TV broadcast, selects a desired station, program data such as video data Z audio data, and TS data (Transport Stream data) mixed with various data. ) Is demodulated.
• the data separation unit 102 converts the TS data into program data such as video data Z audio data, program information data, data broadcasting data (data broadcasting content, various metadata, control documents, other data broadcasting, which will be described later). Data). Then, the data separation unit 102 sends the program data such as the video data Z audio data to the AV decoding unit 103, and the program information data and the data broadcasting data are sent to the memory unit 151 via the internal bus si19. Output to.
• program data such as video data Z audio data
• data broadcasting data data broadcasting content, various metadata, control documents, other data broadcasting, which will be described later. Data
• the data separation unit 102 sends the program data such as the video data Z audio data to the AV decoding unit 103, and the program information data and the data broadcasting data are sent to the memory unit 151 via the internal bus si19. Output to.
• the AV decoding unit 103 processes video data and audio data.
• the AV decoding unit 103 decodes the separated audio data and outputs the decoded audio data to the audio control unit 121, decodes the video data encoded in MPEG or the like, and outputs the decoded video data to the graphic control unit 131.
• the AV decoding unit 103 can decode video data up to a resolution of 1920x1080 and a frame rate of 60 Hz.
• the audio control unit 121 switches or synthesizes audio data from the AV decoding unit 103 and the internal bus si 19, and controls volume, sound quality, presence, etc., and outputs the audio signal to the audio output unit 122. Output.
• the sound output unit 122 amplifies the input sound signal and outputs sound from a speaker.
• the graphic control unit 131 generates a data broadcast screen, an application screen in the TV apparatus 100, a GUI screen such as a message, and the like based on the control of the system control unit 191 described later.
• the display synthesis control unit 133 switches, synthesizes, and enlarges Z reduction of the program data from the AV decoding unit 103 and the image data generated by the graphic control unit 131 based on the control signal from the system control unit 191. Other various conversions, corrections, etc. are performed and output to the display unit 134.
• the display composition control unit 133 has two planes that can be drawn and controlled independently of a data broadcast plane and an application plane, and the data broadcast plane further includes a moving image plane, a still image plane, a character graphic plane, and the like. These planes can be controlled independently.
• the display unit 134 is a display unit that displays the image data from the display composition control unit 133.
• the display unit 134 has a resolution of 1920x1080, a frame rate of 60Hz, and a size of 50 inches and a large screen with a high resolution display.
• the memory unit 151 stores the data broadcast content, the program information data, the control document, other data broadcast data, and the like separated by the data separation unit 102.
• the memory unit 151 is also used as a work memory used by the system control unit 191 for program execution. used.
• the data storage unit 152 is a so-called HDD device.
• the data storage unit 152 stores, reproduces, and deletes various data (the received video data, audio data, and other contents) in accordance with the received control document or an instruction from the viewer or the system control unit 191 described later.
• the HDD device has a very large capacity (several hundred Gbytes or more) compared to the memory unit 151 described above, and can store a plurality of received high-quality program data for each program.
• system control unit 191 uses the received program information, metadata, control document, other data broadcasting data, and billing control for use in various controls such as reception, storage, and playback. Data such as data and viewer's viewing history data is accumulated, and is stored and deleted as needed. Control data such as a storage management table described later is also saved. The area used by the system control unit 191 is managed separately from video data, audio data, and the like.
• the interface unit 161 is connected to a mobile terminal 200 described later, and performs transmission / reception control of various data.
• the external memory connection unit 162 is a connector unit for connecting the external nonvolatile memory card 301.
• the memory card 301 is an external nonvolatile memory card.
• the memory card 301 is also used as an auxiliary storage unit of the TV device 100, which is used for copying, moving, and exchanging data and contents of other devices such as a portable terminal 200 and a digital camera described later.
• Program data such as video data and audio data of the TV device 100 is moved to the memory card 301 and used as a removable external medium for viewing on other devices.
• the Internet connection unit 171 is connected to the Internet via a router (not shown), etc., and is connected to a broadcasting station server, a billing server, etc., and various data such as reservation information for the receiving device, stored information, or billing information for paid content Used when performing transmission / reception, etc.
• the Internet connection unit 171 connects to the mobile terminal 200 via the Internet, and performs bidirectional transmission and reception of data and control.
• the remote control unit 181 is a remote control transmission / reception control unit using infrared rays. Remote control system The control unit 181 transmits / receives data to / from the remote control device operated by the TV viewer, and transfers the data to the system control unit 191.
• the system control unit 191 comprehensively controls each unit in the TV apparatus 100.
• 191 includes a CPU, main memory, bus control unit, program storage unit, parameter storage unit, ID storage unit, clock unit, timer unit, and the like (not shown).
• the system control unit 191 controls the tuner unit 101 and the data separation unit 102 described above when receiving a TV broadcast.
• the system control unit 191 controls channel switching in the tuner unit 101 in accordance with the channel selection signal to which the remote control apparatus power is also transmitted, and controls demodulation of TS data, which will be described later, in order to receive a desired broadcast radio wave. Then, the system control unit 191 causes the data separation unit 102 to separate program data such as the video data Z audio data, program information data, and data broadcasting data from the TS data.
• the system control unit 191 outputs the program data to the AV decoding unit 103 and stores the program information data and the data broadcasting data in the memory unit 151 and the data storage unit 152 through the internal bus sll9.
• the system control unit 191 analyzes the stored program information data and data broadcasting data, performs access control including charging control, etc., and extracts program information to extract a program table for normal broadcasting or server type broadcasting. Construction of the.
• the system control unit 191 controls reservation, reception, storage, reproduction, charging, etc. of content such as video data and audio data to be broadcast in accordance with a user instruction from a remote controller or the like and an instruction of the control document described above.
• the received data such as video data and audio data is stored in the data storage unit 152.
• the system control unit 191 controls the graphic control unit 131 to display video data and data broadcasting data, display applications in the TV apparatus 100, messages, operation panels, and the like.
• the system control unit 191 recognizes the portable terminal 200 connected to the interface unit 161, converts a part of the stored video data based on a request from the viewer, and copies or moves the portable terminal 200 to the portable terminal 200. Do not convert the stored audio data! Copy or move to band terminal 200. At this time, the system control unit 191 performs encryption processing of data to be copied or moved to the mobile terminal 200 as necessary.
• the system control unit 191 controls the display synthesis control unit 133 to synthesize the video data from the AV decoding unit 103 and the image data from the graphic unit 131 and the like.
• the display synthesis control unit 133 controls various information display such as correction and causes the display unit 134 to display various information.
• system control unit 191 controls the voice control unit 121 to control voice synthesis and output to the voice output unit 122.
• system control unit 191 controls transmission / reception of various data to / from a remote control device operated by the viewer, and performs control in TV device 100 based on the data.
• S119 is an internal bus, which is a data bus and a control bus. As described above, the internal bus S119 is used to transfer image data and audio data, and to transfer information from each unit.
• the mobile terminal 200 includes a transmission / reception control unit 201, an AV decoding unit 211, an audio control unit 221, an audio output unit 222, a display control unit 233, a display unit 234, a memory unit 251, an interface unit 261, and an external memory connection unit 262.
• the operation unit 271, the voice input unit 281, and the system control unit 291 are also configured.
• the mobile terminal 200 is a mobile phone device with a removable memory card. As will be described later, the display of the mobile terminal 200 has a lower image quality than the image quality of the TV device 100 described above (corresponding to the “first image quality” of the present invention).
• the transmission / reception control unit 201 performs two-way communication with the telephone station wirelessly and realizes communication with the other party.
• the mobile terminal 200 uses the transmission / reception control unit 201 to connect to the Internet and transmit / receive various data to / from a server or the like.
• the portable terminal 200 uses the transmission / reception control unit 201 to connect to the TV apparatus 100 as described above to perform transmission / reception, control, and the like of various data.
• the transmitted / received data is stored in the memory unit 251 and the external memory 302 via the internal bus S219 as necessary.
• the AV decoding unit 211 receives the signal from the transmission / reception control unit 201 or the memory unit 251 Video data and audio data encoded by MPEG or the like stored in the external memory unit 302 are decoded and output to the audio control unit 221 and the display control unit 233, respectively.
• the AV decoding unit 211 can decode video data having a resolution of 320 ⁇ 240 and a frame rate of 30 Hz in accordance with the performance of the transmission / reception control unit 201, the capacity of the memory unit 251 and the display unit performance of the display unit 234 described later.
• the audio control unit 221 switches or synthesizes the audio data from the AV decoding unit 211 and the internal bus s219 described above, controls the volume, sound quality, presence, and the like, and outputs an audio signal to be described later as an audio signal. Output to part 222.
• the audio output unit 222 amplifies the audio signal input from the audio control unit 121, and outputs a sound by a force.
• the display control unit 233 performs resolution conversion and frame rate conversion on the video data decoded by the AV decoding unit 211 in accordance with the display performance of the display unit 234.
• the display control unit 233 performs switching and composition based on control data from the system control unit 291 in order to display GUI screens such as various application screens, messages, and menus operating on the mobile terminal 200. Various other conversions and corrections are performed.
• the display control unit 233 outputs data for displaying the screen to the display unit 234.
• the display unit 234 displays a screen based on the data output from the display control unit 233.
• the display unit 234 has a display capability (display performance) at a resolution of 240x180, a frame rate of 20 Hz, and a size of 2.4 inches, and can display only a lower quality than the TV device 100.
• the display unit 234 can display content in this display range.
• the received video data, audio data, and other contents are stored, reproduced, deleted, and the like according to instructions from the system control unit 291 described later.
• the memory unit 251 has a function that functions as both the memory unit 151 and the data storage unit 152 of the TV apparatus 100. However, since the memory unit 251 has a small capacity (several tens of bytes to several Gbytes), it is difficult to store high-resolution program data as received by the TV device 100 as it is.
• Interface unit 261 is connected to TV apparatus 100, and performs transmission / reception and control of various data.
• the external memory connection unit 262 is a connector unit for connecting the external nonvolatile memory card 302.
• the memory card 302 is an external nonvolatile memory card.
• the memory card 302 is compatible with the memory card 301 used in the TV device 100.
• the memory card 302 can be used as the memory card 301 of the TV apparatus 100.
• the operation unit 271 also includes a keyboard and a touch operation panel force. This is input means used by the user to operate the mobile terminal 200.
• the voice input unit 281 is used when a user makes a call using the mobile terminal 200.
• the system control unit 291 controls the mobile terminal 200 in an integrated manner. For example, the system control unit 291 controls connection with a telephone office, a call, and data transmission / reception. In addition, the system control unit 291 controls contents such as program data obtained from the Internet connection via a station, data transmission / reception, transmission / reception control unit 201, interface unit 261 or memory card 302, and displays and outputs audio. Is executed.
• system control unit 291 is connected to the TV apparatus 100 via the interface unit 261 and controls transmission / reception of program data in the TV apparatus 100.
• FIG. 3 is a diagram showing the structure of each control unit and the like in the system control unit 191 of the TV apparatus 100.
• 19 la is a basic system control unit including an OS.
• the conversion control unit 191b, the content management unit 191c, the device control unit 191d, and the other control units 191e operate under the management by the basic system control unit 191a.
• the conversion control unit 191b performs data processing (separation, synthesis, encryption, resolution conversion, frame rate conversion, etc.) of the stored video data and audio data in response to a request from the other control unit 191e.
• the content management unit 191c controls storage management of stored video data and audio data, copy control to other devices, storage of data converted by the conversion control unit 191b, and transmission / reception to other devices.
• the device control unit 191d detects an external device connected to the interface unit 161, the external memory connection unit 162, and the Internet connection unit 171 and determines whether the device can be authenticated by the TV apparatus 100. Perform some authentication process. Once authenticated, data transmission and reception is permitted.
• the device control unit 19 Id transmits / receives data in conjunction with the content management unit 191c when there is a request to move or copy a part of program data to a device that has permitted data transmission / reception. Etc. are controlled.
• Other control unit 191e includes other control functions to control reception and display of TV broadcast, audio output, remote control, and the like necessary for the operation of TV device 100.
• the other control unit 19 le includes a so-called bml browser function that operates according to the control document described in the bml document.
• the bml browser function controls the display, storage and playback, access, etc. of received data for data broadcasting according to the various control documents described above.
• bml Broadcast Markup Language
• XML eXtens3 ⁇ 4le Markup Language
• the mobile terminal 200 also has the same control structure as the TV device 100.
• the control structure of the mobile terminal 200 also controls each function of the mobile terminal 200 as described above.
• the mobile terminal 200 in this embodiment does not receive a digital broadcast, it does not have a bml browser function. Instead, an HTML browser is installed so that various contents on the Internet can be viewed and controlled. Suppose that.
• FIG. 4 is a diagram for explaining the contents of broadcast data transmitted from a broadcast station, so-called TS data.
• Broadcast data in this embodiment is composed of three parts: (i) a header part, (ii) a program data part, and (iii) a data transmission data part.
• the header part is composed of program-related information called V, so-called SI information (Service Information), and other control information.
• SI information Service Information
• the title, genre, performer information, content, etc. of the content are described.
• Program data refers to a program portion transmitted as so-called video data Z audio data, and is program data that a viewer views.
• the program data has a structure conforming to the so-called MPEG standard.
• Data broadcasting data is composed of data broadcasting content, various control documents, and the like.
• the control document is composed of various control documents such as display or control of data broadcasting, program playback, access control, and charge control, and is described as a bml document described in the content description language bml.
• the video data used in this embodiment is encoded based on the MPEG standard.
• one frame pixel of a moving image is blocked at 8x8 or 8x16, and DCT conversion is performed.
• the DC component corresponds to the average value in the block.
• I picture Intra-picture, hereinafter referred to as "I picture (Intra-Picture)
• GOP Group Of Pictures
• P-picture Predictive Picture
• Picture Bidirectionally predictive- Picture
• GOPs are grouped every several frames to several tens of frames. I pictures also exist at a rate of one frame in one group.
• Video data for mobile terminal 200 is generated using the DC component of the I picture of the original video data.
• the mobile The device data of the mobile terminal 200 (decoder performance such as decoding capability, resolution, frame rate, display performance, etc.) is sent from the mobile terminal 200 to the TV device 100.
• the device control unit 191d of the TV apparatus 100 that has received this device data sends the display performance (device data) of the mobile terminal to the content management unit 191c, controls the conversion control unit 191b, and performs the decoder performance.
• the video data is generated and encoded according to the display performance as much as possible, and the video data is transmitted to the portable terminal 200 via the device control unit 19 Id.
• the TV apparatus 100 decodes the original program data which is MPEG data, performs thinning and time correction frame generation, and performs MPEG re-encoding in accordance with the display performance.
• the frame at the I picture time of the original MPEG data is always used.
• the DC component of the I picture of the MPEG data of the original program can be used as it is.
• the program data including the DC component of the I picture of the MPEG data of the original program and the additional encoded data is transmitted to the portable terminal 200.
• the mobile terminal 200 decodes the program data by the AV decoding unit 211 and corrects and displays the program data according to the display performance by the display control unit 233.
• the mobile terminal 200 may decode the program data.
• the image of the original program in the TV apparatus 100 of this embodiment has a resolution of 1920x1080.
• the frame rate is 60Hz
• the mobile device 200 has a decoding capability of 320x240, the frame rate is 60Hz, and MPEG can be decoded.
• the TV apparatus 100 converts the video data so that the mobile terminal 200 displays the image with a resolution of 240x135 in consideration of the aspect ratio (16: 9) of the original program image.
• the audio data can be decoded and viewed as it is on the mobile terminal 200.
• the amount of data is smaller than that of video, re-encoding and conversion are not required in order to generate audio data for mobile device 200 within TV device 100.
• the left side is a flowchart showing the operation of the TV device 100
• the right side is a flowchart showing the operation of the mobile terminal 200.
• the mobile terminal 200 is connected to the TV apparatus 100 by the connection cable si1.
• the device control unit 191d of the TV apparatus 100 and the system control unit 291 of the mobile terminal 200 detect that external devices are connected to each other (st501, t551), and then perform authentication processing (st502, t552). ).
• the TV apparatus 100 If the authentication cannot be performed, the subsequent processing cannot be performed, and both the TV device 100 and the mobile terminal 200 end the processing (st502, t552). At this time, the TV apparatus 100 or the mobile terminal 200 notifies the viewer that the authentication cannot be performed. [0121]
• the viewer of the TV apparatus 100 operates the remote control of the TV apparatus 100, operates the GUI (Graphical User Interface) displayed on the screen of the TV apparatus 100, and so on.
• a program to be viewed on the mobile terminal 200 is selected and determined (st503).
• the TV device 100 requests the portable terminal 200 to transmit device data such as display device performance (st504). It is assumed that the selected program has a resolution of 1920x1080 and a frame rate of 60 Hz.
• the mobile terminal 200 transmits device data such as decoder performance and display device performance to the TV apparatus 100.
• the decoder performance is MPEG decodable, a maximum of 320 ⁇ 240, and a frame rate of 30 Hz
• the display performance of the mobile terminal 200 is a resolution of 240 ⁇ 180 and a frame rate of 20 Hz.
• the portable terminal 200 transmits the device data to the TV apparatus 100 (st553).
• the TV apparatus 100 receives the device data such as the decoder performance and the display performance (st504), the video data of the selected program is matched with the decoder performance and the display performance of the mobile terminal 200, and the resolution is 240x135, frame.
• the frame rate conversion and resolution conversion are performed at the rate of about 20 Hz while keeping the DC component of the I picture as much as possible (st510, st511).
• the TV device 100 is a portable terminal that stores the converted video data and audio data. Generated as program data for use.
• the TV apparatus 100 transmits low-resolution program data (data converted using the DC component of the I picture of the original program data, additional encoded data, and audio data) to the mobile terminal 200. (St512).
• the mobile terminal 200 receives the low-resolution program data and stores it in the memory unit 251 or the memory card 302 (st554). When the storage of the program data is completed, the mobile terminal 200 transmits a reception completion notification to the TV device 100 (st555, st556).
• the TV device 100 Upon receiving the reception completion notification (st513), the TV device 100 separates and deletes the DC component of the I picture from the video data, and stores all audio data related to the selected program as a data storage unit. Erase from 152 (st514). After receiving the reception completion notification, only a part of the program data related to the selected program is deleted. Therefore, even if the program data is successfully transferred to the mobile terminal 200, the original data is deleted. The program data power of the mobile device 200 Program data can be generated again.
• the AV decoding unit 211 decodes the video data and audio data as described above. Then, if necessary, the display control unit 233 corrects the frame rate and displays it on the 240x180 display unit 234 with a resolution of 240x135 and a frame rate of 20 Hz (st557). Thus, the viewer can view the selected program data on the portable terminal 200.
• the TV apparatus 100 since the TV apparatus 100 does not retain the difference data except the DC component of the I-picture of the original program data (copy-restricted program data), it cannot be normally decoded. Also, since the audio data is completely moved to the mobile terminal 200, it cannot be reproduced. In addition, even if video data is left as it is in the original program data, normal viewing becomes impossible because the audio data is moved.
• the viewer operates the remote control of the TV apparatus 100, selects the low-resolution program data to be moved, and decides to move again to the TV apparatus 100 (st603).
• the TV device 100 remote controller can also be used to select program data stored on the mobile device 200. This configuration can be realized by acquiring a list of program data stored in the memory unit 251 or the memory card 302 of the portable terminal 200 when the TV apparatus 100 is connected or authenticated. In addition, a list of program data moved to the authenticated mobile terminal 200 is stored in the TV device 100, and a list of program data moved to the screen of the TV device 100 after authentication is displayed so as to be selectable. .
• the mobile terminal 200 When the mobile terminal 200 receives the re-movement request, the mobile terminal 200 transmits two types of data, data obtained by separating the DC component of the I-picture of the original program data and audio data, to the TV device 100 ( st655).
• the device control unit 191d of the TV apparatus 100 that has received the data recognizes two types of data, and requests the content management unit 19lc to receive and manage the data.
• the content management unit 191c recognizes that the received data is a low-resolution program and audio data that have been transmitted before, and combines and stores the difference data remaining in the data storage unit (st605, st606).
• the content management unit 191c sends a reception completion notification and a low-resolution program erasure request to the mobile terminal 200 via the device control unit 191d (st608).
• the portable terminal 200 receives the deletion request, the low-resolution program data stored in the memory unit 251 or the external memory unit 302 is deleted (st656, st657).
• the viewer performs an operation of erasing the program data using the operation unit of mobile terminal 200.
• the mobile terminal 200 erases the low-resolution program data in the memory card 302 in the terminal device 200, and the system control unit 291 controls the transmission / reception control unit 201 to program data via the Internet.
• Delete information to notify that TV is deleted is sent to TV device 100.
• the device control unit 191d of the TV device 100 recognizes the portable terminal 200 and the erasure information, and the content management unit 191c Request deletion of.
• Content management unit 191c is stored high Erase resolution difference data. In this way, it is possible to prevent the TV apparatus 100 from accumulating useless data.
• the configuration of the present embodiment viewing of low-resolution program data is facilitated on the portable terminal 200 that cannot view program data at high resolution. Furthermore, when the mobile terminal 200 can view low-resolution program data, the TV device 100 can make it impossible to view high-resolution program data. Further, by re-moving the low-resolution program data from the mobile terminal 200, the original high-resolution program can be viewed on the TV device 100.
• the program data in the TV device 100 is transmitted. Has become impossible to watch.
• both the TV device 100 and the mobile terminal 200 view the low-resolution program data. It is possible.
• FIG. 7 is a flowchart showing an operation from moving low-resolution video data to the mobile terminal 200 so that both the mobile terminal 200 and the TV device 100 can view the video data.
• st701 to st705 and st751 to st753 in the second embodiment are the same as st501 to st505 and st551 to st553 in the first embodiment, description thereof is omitted.
• the content management unit 191c of the TV apparatus 100 controls the conversion control unit 19 lb, develops video data with a resolution of 1920x1080, so that the mobile terminal 200 has a resolution of 240x135 and a frame rate of 20Hz. and re-encoding, to generate a low-resolution program data (ST710) o in other words, the system control unit 291 low bit rate b spoon content data accumulated content in the HDD device as a data storage unit 152.
• ST710 low-resolution program data
• the original high-resolution program data is encrypted with a certain encryption key Kx (st711). Then, the re-encoded low-quality program data (low-resolution video data and audio data) is transmitted to the portable terminal 200 together with the encryption key Kx (st712). On the other hand, the TV apparatus 100 stores the same data as the low-quality program data transmitted to the mobile terminal 200 in the memory unit 151 and the like.
• portable terminal 200 stores the low-quality program data and encryption key Kx in memory unit 251.
• the mobile terminal 200 transmits a reception completion notification to the TV device 100 (st 754, st755, st756).
• the TV apparatus 100 Upon receiving the reception completion notification (st713), the TV apparatus 100 deletes the encryption key Kx (st714).
• the mobile terminal 200 can decode and view the received and stored low-resolution program data.
• the original high-resolution program data remains encrypted in the TV apparatus 100, but is encrypted. Further, since the encryption key Kx is deleted and is not in the TV apparatus 100, the TV apparatus 100 cannot view high-resolution program data. However, low-resolution program data re-encoded for the portable terminal 200, that is, low bit-rate program data and audio data are stored, so that low-resolution program data can be viewed (st711).
• the content management unit 191c passes through the device control unit 191d to transmit a low-resolution program.
• the mobile terminal 200 is requested to erase the data and transmit the encryption key Kx of the high-resolution program data (st804).
• the mobile terminal 200 that has received the request receives the low-resolution video data and sound in the mobile terminal 200.
• the voice data is deleted (st855), and the encryption key Kx is transmitted to the TV apparatus 100 (st856).
• the TV device 100 Upon receiving the encryption key Kx, the TV device 100 transmits a reception completion notification to the mobile terminal 200 (st806), and the mobile terminal 200 that has received the notification (st857) receives the encryption key Kx.
• Memory part 2
• the data is stored again in the data storage unit 152 (st807).
• the low-resolution video data and the audio data are transmitted to the mobile terminal 200, and then the low-resolution program data in the TV device 100 is deleted.
• the low-resolution program data in the TV device 100 is deleted.
• authentication with an external device and transmission of program data are performed by directly connecting the TV device 100 and the mobile terminal 200 with a wired cable. Connect directly.
• the memory card and the external memory connection portion can be removed and written.
• the media such as CD and DVD, and the external memory connection unit 162, which can be freely performed, may be a media writing Z reading device.
• the configuration described for the TV device 100 in this embodiment can be applied to a display device, a receiving device, a recording device, an image control device, and the like.
• the configuration of mobile terminal 200 for mobile viewing is not limited to a mobile phone, and can also be applied to other storage devices and recording devices such as PDAs and laptop computers.
• the program data may be compressed by the TV device 100 or the portable terminal 200, even if it is not the MPEG method.

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• Engineering & Computer Science (AREA)
• Multimedia (AREA)
• Signal Processing (AREA)
• Databases & Information Systems (AREA)
• Computer Security & Cryptography (AREA)
• Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
• Television Signal Processing For Recording (AREA)
• Storage Device Security (AREA)
• Signal Processing For Digital Recording And Reproducing (AREA)

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• 2005
  • 2005-08-15 JP JP2005235239A patent/JP4769513B2/ja not_active Expired - Fee Related
• 2006
  • 2006-08-15 WO PCT/JP2006/316032 patent/WO2007020919A1/ja not_active Ceased
  • 2006-08-15 US US11/917,240 patent/US8532473B2/en not_active Expired - Fee Related

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