WO2012049983A1 - Récepteur, procédé de réception et programme - Google Patents

Récepteur, procédé de réception et programme Download PDF

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Publication number
WO2012049983A1
WO2012049983A1 PCT/JP2011/072624 JP2011072624W WO2012049983A1 WO 2012049983 A1 WO2012049983 A1 WO 2012049983A1 JP 2011072624 W JP2011072624 W JP 2011072624W WO 2012049983 A1 WO2012049983 A1 WO 2012049983A1
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WO
WIPO (PCT)
Prior art keywords
content
power
program
radio wave
supply
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
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PCT/JP2011/072624
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English (en)
Japanese (ja)
Inventor
志穂 西野
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Sony Corp
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Sony Corp
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Publication of WO2012049983A1 publication Critical patent/WO2012049983A1/fr
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Ceased legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/63—Generation or supply of power specially adapted for television receivers
    • 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
    • H04N21/442—Monitoring of processes or resources, e.g. detecting the failure of a recording device, monitoring the downstream bandwidth, the number of times a movie has been viewed, the storage space available from the internal hard disk
    • H04N21/4425—Monitoring of client processing errors or hardware failure
    • 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
    • H04N21/443—OS processes, e.g. booting an STB, implementing a Java virtual machine in an STB or power management in an STB
    • H04N21/4436—Power management, e.g. shutting down unused components of the receiver

Definitions

  • the present invention relates to a receiving device, a receiving method, and a program, and more particularly, to a receiving device, a receiving method, and a program that can suppress power consumption when radio wave reception is not good.
  • Receiving devices that can move the receiving position such as mobile phones that support one-segment broadcasting and car navigation systems that support full-segment broadcasting, are equipped with digital terrestrial broadcasting reception functions.
  • the screen display state is normally a state in which a completely dark screen is displayed, and a message is displayed at the corner of the screen to notify the user that the radio wave reception status is poor.
  • the present invention has been made in view of such a situation. For example, it is possible to suppress power consumption when the reception condition of radio waves is not good.
  • a receiving apparatus includes a receiving unit that receives content transmitted wirelessly using radio waves, a reproducing unit that reproduces the content, a detecting unit that detects the reception status of the radio waves, and the radio wave If the value representing the reception status of the video is lower than the threshold value, the power control means for stopping the power supply to the reproduction means, and another content in place of the content while the power supply to the reproduction means is stopped. Output control means for outputting.
  • the detection means periodically detects the reception status of the radio wave, and the power control means causes the power supply to the reproduction means when the value indicating the reception status of the radio wave is lower than a threshold value for a certain period of time. Can be stopped.
  • the power control unit restarts the power supply to the reproduction unit, and the output control unit restarts the power supply to the reproduction unit.
  • the reproduction of the other content can be terminated and the image reproduced by the reproduction unit can be displayed.
  • the output control means can output the related information stored in the storage means as the other content.
  • the output control means can output the other content stored in the storage means.
  • Communication means for performing communication via the network can be further provided.
  • the output control means can output the content received by the communication means via the network as the other content.
  • the reception method receives content transmitted wirelessly using radio waves, detects the reception status of the radio waves, and if the value indicating the reception status of the radio waves is lower than a threshold, A step of stopping the supply of power to the playback means for playback and outputting other content instead of the content while the supply of power to the playback means is stopped.
  • the program receives content transmitted wirelessly using radio waves, detects the reception status of the radio waves, and reproduces the content when a value representing the reception status of the radio waves is lower than a threshold value.
  • the power supply to the playback means is stopped, and while the power supply to the playback means is stopped, the computer is caused to execute a process including a step of outputting other content instead of the content.
  • content transmitted wirelessly using radio waves is received, the reception status of the radio waves is detected, and the content is reproduced when a value representing the reception status of the radio waves is lower than a threshold value.
  • the supply of power to the reproducing means is stopped.
  • other content is output instead of the content.
  • FIG. 4 is a flowchart subsequent to FIG. 3 for explaining processing of the reception device. It is a flowchart explaining the process of the receiver at the time of a channel scan. It is a flowchart explaining the other process of the receiver at the time of a channel scan. It is a flowchart explaining the further another process of the receiver at the time of a channel scan. It is a flowchart explaining the process of the receiver at the time of channel seek. It is a flowchart explaining the process of the receiver at the time of channel switching. It is a block diagram which shows the structural example of the hardware of a computer.
  • FIG. 1 is a block diagram illustrating a configuration example of a receiving apparatus according to an embodiment of the present invention.
  • the receiving device 1 is a terrestrial digital broadcast receiver such as one-segment broadcast or full-segment broadcast.
  • the receiving device 1 is of a size that can be carried by a user, and operates with power from a battery (not shown).
  • the reception status of the terrestrial digital broadcast radio waves received by the receiving device 1 changes depending on the user's destination.
  • the reception device 1 is adapted to a circuit that reproduces a program when reception of radio waves deteriorates during viewing of the program and the program image and sound cannot be output correctly. It has a function to stop the supply of power. As a result, it is possible to suppress power consumption when radio wave reception is poor.
  • the receiving device 1 has a function of reproducing and outputting data prepared in advance instead of the image and sound of the program when the image and sound of the program cannot be correctly output. This prevents the user from being bored when the reception status of the radio wave is worse than when a message notifying that the reception status of the radio wave is bad is displayed on a black screen. It becomes possible.
  • the receiving device 1 is provided with a BML (Broadcast Markup Language) browser, and the substitute data includes BML data received and stored in the memory before the radio wave reception state deteriorates.
  • BML data is data described in BML, and is information such as text and still images related to programs and commercials.
  • moving images, still images, music data, or WEB pages acquired via a network such as a 3G line or a wireless LAN are output as substitute data.
  • the receiving apparatus 1 includes an antenna 11, a tuner 12, an OFDM (Orthogonal Frequency Division Multiplex) demodulator 13, a signal processor 14, a speaker 15, and a display 16.
  • OFDM Orthogonal Frequency Division Multiplex
  • the tuner 12 converts the RF signal received by the antenna 11 to an IF signal and outputs the IF signal to the OFDM demodulator 13.
  • the OFDM demodulator 13 performs processing such as A / D (Analog / Digital) conversion, orthogonal demodulation, FFT (Fast Fourier Transform) operation, etc., on the IF signal supplied from the tuner 12 as OFDM demodulation processing.
  • the OFDM demodulator 13 outputs a TS (Transport Stream) of a predetermined channel obtained by the OFDM demodulation processing to the signal processor 14.
  • the signal processing unit 14 includes a TS decoder 21, an audio decoder 22, an output processing unit 23, a video decoder 24, a display processing unit 25, a tuner interface 26, a bus 27, a CPU 28, a memory 29, and a communication unit 30.
  • the TS output from the OFDM demodulator 13 is input to the TS decoder 21.
  • the TS decoder 21 analyzes the TS, outputs an audio ES (Elementary Stream) of a predetermined program to the audio decoder 22, and outputs a video ES to the video decoder 24. Further, the TS decoder 21 outputs a data carousel ES including BML data to the CPU 28 via the bus 27.
  • an audio ES Elementary Stream
  • a video ES to the video decoder 24.
  • the TS decoder 21 outputs a data carousel ES including BML data to the CPU 28 via the bus 27.
  • the audio decoder 22 decompresses audio data compressed by a predetermined compression method supplied from the TS decoder 21 and reproduces uncompressed audio data.
  • the audio decoder 22 outputs data obtained by reproducing the audio data to the output processing unit 23.
  • the audio decoder 22 is configured by a chip that operates with a power source supplied from a battery and operates according to a clock signal supplied from the outside.
  • the output processing unit 23 outputs the sound of the program from the speaker 15 based on the data supplied from the audio decoder 22. Further, for example, when music data is reproduced as alternative data by the CPU 28 and reproduction sound data is supplied via the bus 27, the output processing unit 23 outputs a reproduction sound of music data based on the supplied data to a speaker. 15 to output.
  • the video decoder 24 decompresses video data compressed by a predetermined compression method supplied from the TS decoder 21 and reproduces uncompressed video data.
  • the video decoder 24 outputs the image data of each frame obtained by reproducing the video data to the display processing unit 25.
  • the video decoder 24 is configured by a chip that operates with a power source supplied from a battery and operates according to a clock signal supplied from the outside.
  • the display processing unit 25 displays an image of the program on the display 16 based on the data supplied from the video decoder 24.
  • the display processing unit 25 displays the moving image, still image, or web page based on the supplied data. 16 is displayed.
  • the tuner interface 26 monitors the processing by the OFDM demodulator 13 and detects the reception status of radio waves.
  • the radio wave reception status is expressed by, for example, MER (ModulationModError Ratio).
  • MER is a value representing the quality of modulation, and becomes a larger value when there is less noise, that is, the reception condition of radio waves is better.
  • the tuner interface 26 outputs the MER information to the CPU 28 via the bus 27 as a detection result of the radio wave reception status. Detection of the radio wave reception status is performed at a predetermined cycle such as an interval of several seconds.
  • the CPU 28 controls each unit of the signal processing unit 14 via the bus 27.
  • the CPU 28 analyzes the data carousel ES supplied from the TS decoder 21, acquires BML data, and stores it in the memory 29.
  • the CPU 28 stores the content in the memory 29.
  • the memory 29 is, for example, a flash memory, and stores BML data, moving image data, still image data, music data, and the like.
  • the memory 29 may be a recording medium built in the receiving device 1 or a recording medium that can be attached to and detached from the receiving device 1 such as a memory card.
  • the communication unit 30 is, for example, a 3G line or wireless LAN interface, and communicates with an external device via a network.
  • FIG. 2 is a block diagram illustrating a functional configuration example of the receiving device 1.
  • At least part of the configuration shown in FIG. 2 is realized by the CPU 28 executing a predetermined program.
  • a timer 41, a state management unit 42, a power supply control unit 43, and an alternative data output control unit 44 are realized.
  • the timer 41 measures the time during the reproduction of the program, and outputs an activation signal instructing the start of detection of the radio wave reception status to the state management unit 42 at a predetermined cycle such as an interval of several seconds.
  • the state management unit 42 Each time the activation signal is supplied from the timer 41, the state management unit 42 causes the tuner interface 26 to detect the reception status of the radio wave, and acquires the detection result.
  • the state management unit 42 manages the state of the receiving device 1 that is playing a program according to the detection result of the radio wave reception status.
  • the state of the receiving device 1 during program reproduction includes a TRUE state and a FALSE state, and the state management unit 42 displays information indicating the state of the receiving device 1 at that time as a power supply control unit 43 and an alternative data output control unit. 44. If the state of the receiving apparatus 1 is TRUE, it means that the program can be reproduced normally, and if it is FALSE, the substitute data is output instead of reproducing the program. Represents.
  • the power control unit 43 controls power supply from the battery of the receiving device 1. For example, the power supply control unit 43 supplies power to the audio decoder 22 and the video decoder 24 when information indicating that the state of the receiving device 1 is FALSE is supplied from the state management unit 42 during the reproduction of the program. Stop.
  • the alternative data output control unit 44 controls the output of alternative data.
  • the alternative data output control unit 44 uses the data stored in the memory 29 when information indicating that the state of the receiving device 1 is FALSE is supplied from the state management unit 42 during the reproduction of the program. To output alternative data. Further, the alternative data output control unit 44 appropriately controls the communication unit 30 to access a predetermined server on the network, and causes the alternative data to be output using the acquired data of the WEB page.
  • 3 and 4 are started when a predetermined channel is designated by the user and a program broadcast on the designated channel is being reproduced.
  • power is supplied from the battery to each unit of the signal processing unit 14 to display the program image and the above-described processing for outputting the audio of the program is performed by each unit of the signal processing unit 14.
  • the memory 29 stores the BML data acquired by the CPU 28.
  • step S1 the state management unit 42 determines whether an activation signal has been input from the timer 41, and waits until it is determined that it has been input.
  • step S2 the state management unit 42 controls the tuner interface 26 to detect the reception status of radio waves and acquires the detection result.
  • the radio wave reception status is detected, for example, MER information is supplied from the tuner interface 26 to the state management unit 42.
  • step S3 the state management unit 42 determines whether or not the state of the receiving device 1 is TRUE.
  • the state management unit 42 manages a flag indicating the state of the receiving device 1. For example, whether or not the state of the receiving device 1 is TRUE is determined based on the value of the flag.
  • step S4 the state management unit 42 determines whether or not the radio wave reception state is good. The determination is made based on the information supplied from H.26. For example, when the MER is 10.0 db or more, the state management unit 42 determines that the radio wave reception status is good, and when the MER is less than 10.0 db, the status management unit 42 determines that the radio wave reception status is not good.
  • step S5 the state management unit 42 increments the value of the counter.
  • the counter value represents a period during which the state of reception of radio waves is not good, and is managed by the state management unit 42.
  • step S6 the state management unit 42 determines whether or not the state of poor reception of radio waves continues for a certain period.
  • the value of the counter exceeds the threshold value, it is determined that a state in which radio wave reception is not good continues for a certain period.
  • step S7 the state management unit 42 changes the value of the flag and sets the state of the receiving device 1 to FALSE.
  • Information indicating that the state of the receiving device 1 is FALSE is supplied from the state management unit 42 to the power supply control unit 43 and the alternative data output control unit 44.
  • step S8 the power control unit 43 stops supplying power to the audio decoder 22.
  • step S9 the power control unit 43 stops the supply of power to the video decoder 24.
  • the supply of power to the audio decoder 22 may be stopped after the supply of power to the video decoder 24 is stopped.
  • the alternative data output control unit 44 outputs alternative data.
  • the alternative data output control unit 44 reads BML data stored in advance from the memory 29 and acquires related information of the program.
  • the related information of the program is text or an image
  • the alternative data output control unit 44 outputs the text or image that is the related information of the program to the display processing unit 25 and displays it on the display 16.
  • the related information of the program may include not only the detailed information of the program such as the program introduction but also the information of the broadcasting station and the information of the advertiser.
  • the alternative data output control unit 44 controls the communication unit 30 to access the URL.
  • the alternative data output control unit 44 outputs an HTML (Hyper Text Markup Language) file acquired from the accessed server to the display processing unit 25 and causes the display 16 to display a WEB page.
  • the search server may be accessed, and the searched WEB page may be displayed using the name of the program or broadcast station that was most recently played as a key.
  • the alternative data output control unit 44 reads the data of the still image or moving image from the memory 29 and reproduces it.
  • the alternative data output control unit 44 outputs the data obtained by the reproduction to the display processing unit 25 and causes the display 16 to display a still image or a moving image.
  • the alternative data output control unit 44 reads the music data stored in the memory 29 as alternative data
  • the alternative data output control unit 44 reads the music data from the memory 29 and reproduces it.
  • the alternative data output control unit 44 outputs the data obtained by reproduction to the output processing unit 23 and causes the reproduction sound to be output from the speaker 15.
  • the substitute data is any data that can be reproduced and output without using at least one of the audio decoder 22 and the video decoder 24 whose power supply is stopped. May be.
  • the user may select the type of data to be output as alternative data (music, still image, etc.) and the data to be output as alternative data in advance or at the start of output of alternative data.
  • step S1 After the output of alternative data is started as described above, the process returns to step S1 and the subsequent processing is repeated.
  • step S11 the state management unit 42 has successfully decoded one frame image based on the video data decoding status by the video decoder 24. Determine whether. Although the reception status of the radio wave was good, data necessary for image display may not be obtained after decoding by the TS decoder 21, and such a state is also detected.
  • the video decoder 24 manages to which macroblock the decoding has been completed.
  • the determination by the state management unit 42 as to whether or not the image of one frame has been correctly decoded can be made based on information managed by the video decoder 24.
  • step S11 If it is determined in step S11 that the image of one frame has not been correctly decoded, the state management unit 42 performs the processing from step S5.
  • step S12 the state management unit 42 resets the value of the counter.
  • the count value is reset, and normal reproduction is continued.
  • the user may be able to select a condition for resetting the counter value. Further, in order to avoid repeated ON / OFF of the power supply to the audio decoder 22 and the video decoder 24, it is based not only on video data but also on whether decoding of a specific frame of audio data has been correctly completed to the end. Thus, the timing for resetting the counter value may be adjusted.
  • step S12 After the counter value is reset in step S12 or when it is determined in step S6 that the state of poor reception of radio waves has not continued for a certain period of time, the state management unit 42 performs normal program playback on the signal processing unit 14. Let each part of Then, it returns to step S1 and the subsequent processing is repeated.
  • step S3 determines whether the state of the receiving device 1 is TRUE, that is, that the alternative data is being reproduced. If it is determined in step S3 that the state of the receiving device 1 is not TRUE, that is, that the alternative data is being reproduced, in step S14 (FIG. 4), the state management unit 42 receives the radio wave. Determine if the situation is good.
  • step S14 If it is determined in step S14 that the reception status of radio waves is not good, the process proceeds to step S10, and output of alternative data is started as described above.
  • step S14 If it is determined in step S14 that the radio wave reception status is good, the power supply control unit 43 starts supplying power to the video decoder 24 in step S15.
  • step S16 the power control unit 43 starts supplying power to the audio decoder 22. After the supply of power is started, the audio decoder 22 resumes decoding of the program audio data, and the video decoder 24 resumes decoding of the program video data.
  • step S17 the state management unit 42 changes the value of the flag and sets the state of the receiving device 1 to TRUE.
  • step S18 the state management unit 42 determines whether or not the decoding of one frame image is completed, and waits until it is determined that the decoding is completed.
  • the state management unit 42 determines whether or not the decoding of one frame image is completed, and waits until it is determined that the decoding is completed.
  • the decoding of the last macroblock of one frame in the decoding order is completed, it is determined that the decoding of the image of one frame is completed.
  • the process of step S17 may be performed after it is determined that the decoding of one frame image has been completed, and the state of the receiving apparatus 1 may be set as TRUE.
  • step S18 If it is determined in step S18 that the decoding of one frame image has been completed, the alternative data output control unit 44 ends the output of the alternative data and restarts the output of the program image and sound. Thereafter, the process returns to step S1, and the subsequent processing is performed.
  • the user waits using the related information of the program and other multimedia contents until the reception state of the radio wave is recovered and the reproduction of the program is resumed. be able to.
  • the program information and CM information included in the BML data output as substitute data, it is possible for the broadcasting side to prevent missing the opportunity to provide programs and advertisements.
  • the power supply to the audio decoder 22 and the video decoder 24 is stopped when the reception condition of radio waves is not good.
  • the supply of the clock signal to the audio decoder 22 and the video decoder 24 is stopped. It may be. This also makes it possible to reduce power consumption by stopping the supply of the clock signal.
  • the power supply to both the audio decoder 22 and the video decoder 24 is stopped.
  • the power supply may be stopped.
  • the channel scan is a process for detecting which channel in the entire predetermined frequency band is used to broadcast the program.
  • the channel seek is a process for detecting a channel used for broadcasting a program that is adjacent on the frequency axis with the currently received channel as a reference. Both the channel scan and channel seek processes are, for example, processes performed during playback of a program (while the user is viewing the program).
  • the process of FIG. 5 is a process of stopping the power supply to the decoder and starting the output of alternative data after the channel scan is started.
  • the process of FIG. 5 is started when, for example, a channel scan is instructed by the user during the reproduction of a program.
  • the tuner interface 26 causes the OFDM demodulator 13 to perform OFDM demodulation processing, and starts channel scanning using the demodulation result.
  • Information on the channel detected by the tuner interface 26 (information on the frequency at which the program can be received) is supplied to, for example, the state management unit 42 and managed.
  • step S32 the power supply control unit 43 stops supplying power to the audio decoder 22, and in step S33, stops supplying power to the video decoder 24.
  • step S34 the alternative data output control unit 44 outputs the alternative data as described above.
  • the output of the alternative data is continued until the channel scan is completed, for example.
  • the supply of power to the audio decoder 22 and the video decoder 24 is resumed, and the reproduction of the program broadcast on the predetermined channel detected by the channel scan is started.
  • the output of the alternative data is terminated, the program image is displayed on the display 16, and the sound is output from the speaker 15.
  • the receiving apparatus 1 can suppress power consumption during channel scanning. Also, the user can wait until the channel scan is completed, for example, by looking at alternative data.
  • FIG. 6 is a process for stopping the supply of power to the decoder and outputting alternative data when the ratio of receivable channels is low after the start of channel scanning.
  • the processing in FIG. 6 is also started, for example, when a channel scan is instructed by the user during program playback.
  • step S41 the tuner interface 26 starts a channel scan.
  • the channel information detected by the tuner interface 26 is supplied to, for example, the state management unit 42 and managed.
  • step S42 the state management unit 42 determines whether the ratio of channels that can receive program data is low. For example, when scanning of frequency bands for 20 channels is completed and 10 channels are detected as receivable channels, the ratio of receivable channels is 50%. The state management unit 42 calculates the ratio of receivable channels in this way, and determines that the ratio of receivable channels is low when the calculated ratio is lower than the threshold.
  • step S42 If it is determined in step S42 that the proportion of channels that can receive program data is low, the power supply control unit 43 stops supplying power to the audio decoder 22 in step S43. In step S44, the power supply control unit 43 stops the supply of power to the video decoder 24.
  • step S45 the alternative data output control unit 44 outputs alternative data.
  • the output of the alternative data is continued until, for example, the channel scan is completed or the ratio of receivable channels becomes higher than a threshold value. If it is determined in step S42 that the ratio of receivable channels is high, the processes in steps S43 to S45 are skipped.
  • the process of FIG. 7 stops the power supply to the decoder when the control data necessary for program playback such as NIT (Network Information Table) and PMT (Program Map Table) cannot be decoded after the channel scan is started. This is a process for outputting alternative data.
  • the processing in FIG. 7 is also started, for example, when a channel scan is instructed by the user while viewing a program.
  • step S51 the tuner interface 26 starts a channel scan.
  • the TS obtained by the OFDM demodulator 13 is supplied to the TS decoder 21.
  • the TS decoder 21 performs processing for extracting control data such as NIT and PMT from the TS.
  • step S52 the state management unit 42 determines whether control data such as NIT has not been received based on the decoding status by the TS decoder 21.
  • step S52 The processing after it is determined in step S52 that control data such as NIT has not been received is the same processing as the processing after step S43 in FIG. That is, in step S53, the power supply control unit 43 stops supplying power to the audio decoder 22, and in step S54, stops supplying power to the video decoder 24.
  • step S55 the alternative data output control unit 44 outputs alternative data.
  • the output of the alternative data is continued until, for example, the channel scan is completed or control data such as NIT can be received. If it is determined in step S52 that control data such as NIT has been received, the processes in steps S53 to S55 are skipped.
  • the process of FIG. 8 is a process of stopping the supply of power to the decoder and outputting alternative data when a bad radio wave reception state continues for a certain period after the channel seek is started.
  • the process of FIG. 8 is started, for example, when a channel seek is instructed by the user during the reproduction of a program.
  • the channel seek command uses the + button operated when detecting a channel with a higher frequency or the-button operated when detecting a channel with a lower frequency, based on the currently received channel. Done.
  • step S61 the tuner interface 26 causes the OFDM demodulation unit 13 to perform OFDM demodulation processing, and starts channel seek using the demodulation result.
  • the channel information detected by the tuner interface 26 is supplied to, for example, the state management unit 42 and managed.
  • step S62 the state management unit 42 determines whether or not a state of poor reception of radio waves has continued for a certain period.
  • a state of poor reception of radio waves has continued for a certain period.
  • step S63 the power control unit 43 stops supplying power to the audio decoder 22. Further, the power supply control unit 43 stops the supply of power to the video decoder 24 in step S64.
  • step S65 the alternative data output control unit 44 outputs alternative data.
  • the output of the alternative data is continued until the channel seek is completed or a receivable channel is detected, for example. If it is determined in step S62 that the state of poor reception of radio waves does not continue for a certain period, the processing in steps S63 to S65 is skipped.
  • the user can wait for the channel to be detected by looking at the alternative data even if the channel seek is performed but the receivable channel is not easily detected. Further, the receiving device 1 can suppress power consumption.
  • the process of FIG. 9 when the channel is switched but the program cannot be displayed due to poor reception of radio waves for a certain period of time, the power supply to the decoder is stopped and the alternative data is output. It is a process to perform.
  • the process of FIG. 9 is started, for example, when a user instructs switching of channels during the reproduction of a program.
  • step S71 the tuner interface 26 switches the channel by controlling the OFDM demodulator 13 to switch the channel to be demodulated.
  • the TS obtained by the OFDM demodulator 13 is supplied to the TS decoder 21.
  • the TS transmitted on the channel after switching is decoded.
  • step S72 the state management unit 42 determines, based on the decoding state by the TS decoder 21, whether or not a state in which the program cannot be reproduced has continued for a certain period due to poor reception of radio waves.
  • a state in which the program cannot be reproduced has continued for a certain period due to poor reception of radio waves.
  • the state management unit 42 determines, based on the decoding state by the TS decoder 21, whether or not a state in which the program cannot be reproduced has continued for a certain period due to poor reception of radio waves.
  • the state management unit 42 determines, based on the decoding state by the TS decoder 21, whether or not a state in which the program cannot be reproduced has continued for a certain period due to poor reception of radio waves.
  • step S73 the power control unit 43 stops supplying power to the audio decoder 22.
  • step S74 the power control unit 43 stops supplying power to the video decoder 24.
  • step S75 the alternative data output control unit 44 outputs alternative data.
  • the output of the alternative data is continued until, for example, a receivable channel is detected and a program can be displayed. Note that if it is determined in step S72 that the state of poor reception of radio waves has not continued for a certain period of time, the processing of steps S73 to S75 is skipped.
  • the user can wait for the program data to be received by viewing the alternative data even if the user has instructed the channel switching but the program data cannot be received easily. Further, the receiving device 1 can suppress power consumption.
  • the reception state of the broadcast wave is detected and processed.
  • the reception state of the wireless LAN radio wave is detected.
  • the same processing as when a broadcast wave reception state is detected may be performed.
  • FIG. 10 is a block diagram showing an example of the hardware configuration of a computer that executes the above-described series of processing by a program.
  • a CPU Central Processing Unit
  • ROM Read Only Memory
  • RAM Random Access Memory
  • an input / output interface 55 is connected to the bus 54.
  • an input unit 56 such as a keyboard and a mouse
  • an output unit 57 such as a display and a speaker.
  • the input / output interface 55 is connected to a storage unit 58 made up of a hard disk, a non-volatile memory, etc., a communication unit 59 made up of a network interface, etc., and a drive 60 that drives the removable media 61.
  • the CPU 51 loads the program stored in the storage unit 58 to the RAM 53 via the input / output interface 55 and the bus 54 and executes it, thereby executing the above-described series of processing. Is done.
  • the program executed by the CPU 51 is recorded in the removable medium 61 or provided via a wired or wireless transmission medium such as a local area network, the Internet, or digital broadcasting, and is installed in the storage unit 58.
  • the program executed by the computer may be a program that is processed in time series in the order described in this specification, or in parallel or at a necessary timing such as when a call is made. It may be a program for processing.

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Databases & Information Systems (AREA)
  • General Engineering & Computer Science (AREA)
  • Software Systems (AREA)
  • Circuits Of Receivers In General (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)

Abstract

La présente invention porte sur un récepteur, un procédé de réception et un programme configurés pour réduire la consommation d'énergie en cas de mauvaise réception de signal. Lorsqu'une mauvaise réception de signal est provoquée durant la visualisation d'un programme de télévision et qu'un récepteur (1) ne peut pas délivrer correctement des images et du son du programme, l'alimentation électrique de circuits d'un décodeur vidéo et d'un décodeur audio qui sont en train de reproduire le programme est arrêtée. En outre, si des images et du son du programme ne peuvent pas être correctement délivrés, des informations relatives, des images animées, des images fixes et des données de musique du programme, telles que des données MBL stockées à l'avance dans une mémoire, sont reproduites et délivrées à la place des images et du son du programme. La présente invention est applicable à un dispositif recevant et reproduisant des contenus transmis par ondes radio.
PCT/JP2011/072624 2010-10-13 2011-09-30 Récepteur, procédé de réception et programme Ceased WO2012049983A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2010231004A JP2012085185A (ja) 2010-10-13 2010-10-13 受信装置、受信方法、およびプログラム
JP2010-231004 2010-10-13

Publications (1)

Publication Number Publication Date
WO2012049983A1 true WO2012049983A1 (fr) 2012-04-19

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PCT/JP2011/072624 Ceased WO2012049983A1 (fr) 2010-10-13 2011-09-30 Récepteur, procédé de réception et programme

Country Status (2)

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JP (1) JP2012085185A (fr)
WO (1) WO2012049983A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7716897B2 (ja) * 2021-06-11 2025-08-01 株式会社デンソーテン 制御装置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005109911A (ja) * 2003-09-30 2005-04-21 Seiko Epson Corp デジタル放送受信機
JP2005191916A (ja) * 2003-12-25 2005-07-14 Sharp Corp 携帯端末、携帯端末における受信方法、プログラムおよび記録媒体
JP2008270882A (ja) * 2007-04-16 2008-11-06 Sharp Corp 携帯端末装置
JP2010004545A (ja) * 2009-07-21 2010-01-07 Toshiba Corp 移動無線端末装置

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005109911A (ja) * 2003-09-30 2005-04-21 Seiko Epson Corp デジタル放送受信機
JP2005191916A (ja) * 2003-12-25 2005-07-14 Sharp Corp 携帯端末、携帯端末における受信方法、プログラムおよび記録媒体
JP2008270882A (ja) * 2007-04-16 2008-11-06 Sharp Corp 携帯端末装置
JP2010004545A (ja) * 2009-07-21 2010-01-07 Toshiba Corp 移動無線端末装置

Also Published As

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JP2012085185A (ja) 2012-04-26

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