WO2006089022A1 - Navigation sur un ensemble de chaines sur un poste de television a syntoniseur atsc integre - Google Patents

Navigation sur un ensemble de chaines sur un poste de television a syntoniseur atsc integre Download PDF

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Publication number
WO2006089022A1
WO2006089022A1 PCT/US2006/005470 US2006005470W WO2006089022A1 WO 2006089022 A1 WO2006089022 A1 WO 2006089022A1 US 2006005470 W US2006005470 W US 2006005470W WO 2006089022 A1 WO2006089022 A1 WO 2006089022A1
Authority
WO
WIPO (PCT)
Prior art keywords
signal processing
processing device
channel
digital channel
digital
Prior art date
Application number
PCT/US2006/005470
Other languages
English (en)
Inventor
Rajeev Madhukar Sahasrabudhe
Original Assignee
Thomson Licensing
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from PCT/US2005/004813 external-priority patent/WO2006088449A1/fr
Priority claimed from PCT/US2005/005106 external-priority patent/WO2006088460A1/fr
Application filed by Thomson Licensing filed Critical Thomson Licensing
Priority to US11/884,494 priority Critical patent/US20080172699A1/en
Publication of WO2006089022A1 publication Critical patent/WO2006089022A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
    • H04N5/46—Receiver circuitry for the reception of television signals according to analogue transmission standards for receiving on more than one standard at will
    • 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
    • H04N21/422—Input-only peripherals, i.e. input devices connected to specially adapted client devices, e.g. global positioning system [GPS]
    • H04N21/42204—User interfaces specially adapted for controlling a client device through a remote control device; Remote control devices therefor
    • H04N21/42206—User interfaces specially adapted for controlling a client device through a remote control device; Remote control devices therefor characterized by hardware details
    • H04N21/42221—Transmission circuitry, e.g. infrared [IR] or radio frequency [RF]
    • 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
    • H04N21/426—Internal components of the client ; Characteristics thereof
    • H04N21/42692—Internal components of the client ; Characteristics thereof for reading from or writing on a volatile storage medium, e.g. Random Access Memory [RAM]
    • 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
    • H04N21/434—Disassembling of a multiplex stream, e.g. demultiplexing audio and video streams, extraction of additional data from a video stream; Remultiplexing of multiplex streams; Extraction or processing of SI; Disassembling of packetised elementary stream
    • H04N21/4348—Demultiplexing of additional data and video streams
    • 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
    • H04N21/435—Processing of additional data, e.g. decrypting of additional data, reconstructing software from modules extracted from the transport stream
    • 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
    • H04N21/47—End-user applications
    • H04N21/482—End-user interface for program selection
    • 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
    • H04N21/47—End-user applications
    • H04N21/488—Data services, e.g. news ticker
    • 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]
    • H04N21/80—Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
    • H04N21/83—Generation or processing of protective or descriptive data associated with content; Content structuring
    • H04N21/84—Generation or processing of descriptive data, e.g. content descriptors

Definitions

  • the present invention relates to the area of channel navigation on signal processing devices, including an automatic prompt via an onscreen display (OSD) pop-up.
  • OSD onscreen display
  • television stations may simulcast. That is, stations may simultaneously broadcast their programs on two channels/signal sources allotted for their use by the Federal Communications Commission (FCC). Each of the two channels will encompass 6 MHz of bandwidth and need not be contiguous. One of the two sources will be the channel currently assigned to the station for NTSC analog broadcasts and the other will be for station use for HDTV digital broadcasts. It is, however, likely that viewers will regard the transmissions as one source/channel because the same program is carried simultaneously on both channels. Analog broadcasting may be off-air or cable.
  • FCC Federal Communications Commission
  • Signal processing devices produced during this transition period usually have two tuners.
  • Signal processing devices may include, but are not limited to, set top boxes (STBs), video cassette players and recorders (VCPs and VCRs), digital video disc players (DVDs) as well as televisions (TVs).
  • STBs set top boxes
  • VCPs and VCRs video cassette players and recorders
  • DVDs digital video disc players
  • One of the tuners and corresponding signal processing circuitry/module(s) is for receiving and processing HDTV signals and the other tuner and corresponding signal processing circuitry/module(s) is for receiving and processing NTSC analog signals.
  • ASC analog-to-digital
  • DAB National Association ofi Broadcasters
  • the digital channels have pseudo channel numbers that are only two digits e.g.
  • digital channel 13-1 could have a pseudo channel number 46, and in the absence of the above invention, after having tuned to the digital tuner/input the user could enter the pseudo channel number instead of the actual main and sub-channel numbers for a channel. It is obvious that since the pseudo channel numbers do not relate in any way to the digital channel number and/or the analog channel number for a particular broadcaster, the user would have to remember the pseudo channel numbers for all the digital channels available to him/her.
  • NTSC off-air analog
  • the user might remember that the same broadcast is available in high definition. Since he/she does have a high definition signal processing devices he/she might as well view the broadcast in HD quality rather than standard definition (SD) quality, so the user/viewer may wish to select the ATSC signal source/channel.
  • the user switches the signal processing device's tuners/inputs from the analog tuner (NTSC) to the digital tuner (ATSC) the channel the signal processing device tunes to is either the first channel/signal source in the list of digital channels or the last signal source/channel that was tuned to when the user was watching a digital broadcast. Now the user has to navigate to locate the correct/equivalent digital broadcast by changing channels to tune to the correct digital channel.
  • Yet another prior art method of changing a channel/selecting a signal source is to directly tune to the desired channel number by, for example, using a remote control device.
  • the first problem being the digital channel numbers have two parts namely — a main channel number and a sub-channel number. If the tuner does not support data broadcasts then the sub-channel number can be a two digit number such as 13-02, where 13 is the main channel number and 02 being the sub- channel number.
  • the broadcasts are both analog as well as digital this represents an inherent difference in the channel entry method for the two sources with the digital channel number entry requiring entries for both the main as well as the sub-channel numbers.
  • the status displays in the HDTVs indicate the incoming signal resolution to the user. 5
  • the user ends up watching an analog off-air or analog cable broadcast channel simply because the user does not know that the same broadcast channel is available as a digital High Definition off-air broadcast or that he/she has to search for the corresponding digital channel or has to change channels to the corresponding digital 10 channel.
  • This invention offers an easy and intuitive way for the user to navigate through the available analog channels as well as digital channels when it is not possible to have both analog and digital channels in one channel list.
  • the user is not required to remember the pseudo channel number or the main and sub-channel number for a digital channel. To tune to a particular signal source/digital channel the user simply needs to select an
  • analog channel and switch inputs/tuners to select the corresponding digital channel.
  • the signal processing device would automatically identify the digital channel from the same broadcaster as the analog channel the signal processing device was tuned to prior to the user changing the tuner/input and directly tune to that channel.
  • the signal processing device is
  • the signal processing device menu system has an option where the user sets his/her preference for the channel tuned to after the analog- to-digital or digital-to-analog tuner/input switch so as to tune to the channel from the same
  • the method and apparatus of the present invention allow a user to select one of an analog signal source and a digital signal source in a signal processing device, wherein the signal processing device compares an analog channel number with a digital channel list, determines based on results of the comparison if a corresponding digital broadcast is available, and, if available, stores a corresponding digital channel number and selects the corresponding digital channel determined from the digital channel list in response to a command from a user.
  • the present invention also describes an automatic prompt via an OSD pop-up that informs the user if the broadcast channel he/she is viewing (if analog off-air) is also available in HD allowing the user to use his/her HDTV to its fullest potential.
  • the invention allows the signal processing device software to prompt the user if he/she is currently viewing an analog off-air or cable broadcast channel when the same broadcast is available as a digital HD off-air channel. This enables the user to view the channel at the maximum broadcast resolution and quality thereby enhancing the viewing experience and helping utilize the potential of the HDTV to the fullest possible. This is accomplished by user selection of an ATSC signal
  • the signal processing device software has the ability to store the found ATSC digital and NTSC analog channels in the same manner as is in HDTVs today.
  • the signal processing device software also has a hard-coded matrix that contains the correspondence between a particular analog off-air channel and its ATSC digital HDTV channel for different viewing areas.
  • both lists are stored in non-volatile memory (NVM). If the user now tunes the signal processing device to an analog signal source/channel, the signal processing device will check the matrix to determine if a corresponding ATSC digital HDTV channel is available and was located and stored in NVM during the channel search.
  • an OSD will pop-up so informing the user/viewer and also providing the user with an option for the user to depress a particular remote control key to make the signal processing device directly tune to that ATSC digital HDTV channel.
  • a method and apparatus are also described for allowing a user to select an analog signal source or a digital signal source in a signal processing device by comparing by the signal processing device an analog channel number with a digital channel list, determining based on the comparison if a corresponding digital broadcast is available, and, if available, prompting the user via an onscreen display (OSD) to select the digital signal and selecting said corresponding digital channel determined from the digital channel list in response to a command from the user.
  • OSD onscreen display
  • FIG. 1 is a block diagram of an exemplary implementation of the present invention.
  • FIG. 2 A is a flowchart illustrating an exemplary method of implementing the present invention.
  • FIG. 2B is a flowchart illustrating an exemplary method of implementing the present invention.
  • FIG. 3 is a screen shot of an exemplary OSD pop-up display of the present invention.
  • the present invention is directed to an interface by which the user/viewer can institute a change from an analog broadcast to a corresponding digital (HDTV) broadcast if such a broadcast is available.
  • NTSC analog channel numbers include a major channel number followed by the minor channel number 0. Users/viewers are, however, not aware of this and only use the major channel number for a NTSC analog channel. All ATSC digital HDTV channel numbers corresponding to NTSC analog channels have minor channel numbers of 1 or greater. For example, for NTSC analog channel 13, which is technically 13-0, has corresponding ATSC digital HDTV channels (if available and being broadcast) of 13 -1, 13-2 etc.
  • FIG. 1 is a block diagram of an exemplary implementation of the present invention.
  • a signal processing device 100 manufactured/produced during the transition period has two tuners and two corresponding sets of signal processing circuitry.
  • One tuner and corresponding set of signal processing circuitry 105 is for receiving and processing NTSC analog signals.
  • the other tuner and corresponding set of signal processing circuitry 110 is for receiving and processing ATSC digital HDTV signals.
  • Each tuner and corresponding set of signal processing circuitry receives off-air/cable signals as input.
  • Each tuner and corresponding set of signal processing circuitry 105,1 10 is also in communication with the signal processing device's microprocessor 115.
  • the signal processing device's microprocessor is further in communication with the signal processing device's non-volatile memory 120.
  • Non-volatile memory is used to store the channels list(s) as well as the software to implement the present invention.
  • Each tuner and corresponding set of signal processing circuitry 105,110 may also be in communication with the signal processing device's display engine 125, which may also drive display screen 130 of the signal processing device.
  • the signal processing device's microprocessor 115 also receives information/commands from an infrared (IR) receiver 135, which is controlled by an IR remote control device 140.
  • IR infrared
  • the user/viewer controls the switching between analog and digital channels via the IR remote control device 140.
  • the user also controls the switching between analog and digital channels by using the buttons on the front panel of the receiver but most users/viewers today rely on the IR remote control device.
  • the remote control devices and the corresponding receivers use IR technology but they need not.
  • FIG. 2A is a flowchart illustrating an exemplary method 200 of implementing the present invention.
  • the signal processing device determines if it is currently tuned to an NTSC analog channel at 210. If the signal processing device is currently tuned to an NTSC signal source/channel then the signal processing device compares the currently tuned NTSC channel number with the ATSC digital HDTV channel list, which maybe in non-volatile memory at 215. The comparison is made, for example, by comparing the closed captioning information the receiver receives for a NTSC analog channel and an ATSC digital HDTV channel.
  • the signal processing device could use any of the data that is carried in the vertical blanking interval (VBI) to perform the comparison in order to identify the corresponding ATSC digital channel for an NTSC analog channel.
  • VBI vertical blanking interval
  • the VBI carries information such as V-chip ratings, time and day, program information, electronic program guide (EPG) information, and second audio program (SAP) if available.
  • the signal processing device Upon receipt of such a command, the signal processing device to select the corresponding ATSC digital HDTV channel using the information, which may be in the non-volatile memory at 235. If no command to select the corresponding ATSC digital HDTV channel is received then the signal processing device remains tuned to the NTSC analog channel as indicated at 240. The signal processing device then returns to 210 when the user/viewer changes to another NTSC analog channel.—
  • FIG. 2B is a flowchart illustrating a exemplary method of implementing the present invention. Steps 205 - 220 are the same as in Fig. 2A so the description will not be repeated.
  • a determination is made by the signal processing device's microprocessor based on the results of the comparison at 215 if there is an ATSC digital HDTV broadcast channel available corresponding to the currently tuned NTSC analog channel. If an ATSC digital HDTV broadcast is available then the user/viewer will be prompted with an OSD to press "OK" in order to tune to the ATSC digital HDTV broadcast at 225B, the channel number for which was stored in the non-volatile memory associate with the signal processing device's microprocessor.
  • the microprocessor selects the corresponding ATSC digital HDTV channel using the information in the non- volatile memory at 235B. If neither an "OK” nor a "CLEAR" command are received then the signal processing device stays tuned to the NTSC analog channel as indicated at 240B. The signal processing device then goes back to 210 when the user/viewer changes to another NTSC analog channel.
  • FIG. 3 is an exemplary OSD pop-up of the present invention.
  • the user can simply press "OK” to directly tune to the corresponding digital channel with the HD broadcast without having to enter any channel numbers.
  • Any button/key could be used and the invention is not limited to using the "OK” and the "CLEAR” buttons.
  • the signal processing device also prompts/queries the user, whether, in the future, the signal processing device should always tune to the ATSC digital HDTV broadcast instead of the analog broadcast, thereby preventing unnecessary pop-ups of the above OSD.
  • the user selects to always tune to the ATCS digital HDTV channel/signal source instead of the analog channel the respective analog channel is simply removed from the CH-/+ button loop, but the analog channel number is not discarded so the user could still tune to that analog signal source/channel using direct digit input in the future if he/she so desires.
  • the signal processing device software catalogs the cable -ehannels— in-ease-the ⁇ user-als ⁇ -has-eablepusingrthe vertical-blanking-interval-(VBI) information of the channel currently tuned to and then attempt to locate the associated high definition off-air channel, if available, and prompt the user of its availability.
  • the VBI carries information such as V-chip ratings, time and day, program information, electronic program guide (EPG) information, and second audio program (SAP), if available. This solves the problem of the channel numbers for both the analog cable and digital high definition off-air broadcast being the same but the broadcasters and the broadcast programs actually being totally different.
  • Another way to accomplish an accurate prompt would be to compare the closed captioning data that is received in the VBI.
  • This embodiment provides for more accuracy than the prompt provided to the user as the closed captioning data for an analog broadcast channel for a particular broadcast would be the same for the broadcast digital channel as well.
  • Any of the VBI data could be used to perform the comparison or any combination of the VBI data could be used to perform the comparison.
  • the present invention may be implemented in various forms of hardware, software, firmware, special purpose processors, or a combination thereof.
  • the present invention is implemented as a combination of hardware and software.
  • the software is preferably implemented as an application program tangibly embodied on a program storage device.
  • the application program maybe uploaded to, and executed by, a machine comprising any suitable architecture.
  • the machine is implemented on a computer platform having hardware such as one or more central processing units (CPU), a random access memory (RAM), and input/output (I/O) interface(s).
  • CPU central processing units
  • RAM random access memory
  • I/O input/output
  • the computer platform also includes an operating system and microinstruction code.
  • various processes and functions described herein may either be part of the microinstruction code or part of the application program (or a combination thereof), which is executed via the operating system.
  • various other peripheral devices may be connected to the computer platform such as an additional data storage device and a printing device.

Abstract

L'invention concerne un procédé et un dispositif permettant à l'utilisateur de choisir entre une source de signal analogique et une source de signal numérique dans un dispositif de traitement de signal. Le dispositif de traitement de signal compare le numéro d'une chaîne analogique à une liste de chaînes numériques; détermine selon les résultats de la comparaison si une chaîne numérique correspondante est disponible, et, le cas échéant, stocke le numéro de la chaîne numérique correspondante; et sélectionne la chaîne numérique correspondante, définie dans la liste des chaînes numériques, en réponse à une commande de l'utilisateur. L'invention concerne aussi un procédé et un dispositif tels que ceux décrits précédemment, mais qui permettent en outre de déterminer, sur la base de la comparaison, si une chaîne numérique correspondante est disponible, et, le cas échéant, d'inviter l'utilisateur à sélectionner le signal numérique par l'intermédiaire d'un affichage à l'écran (OSD).
PCT/US2006/005470 2005-02-16 2006-02-16 Navigation sur un ensemble de chaines sur un poste de television a syntoniseur atsc integre WO2006089022A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US11/884,494 US20080172699A1 (en) 2005-02-16 2006-02-16 Channel Navigation on Integrated Atsc Tuner Tv Set

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
USPCT/US2005/04813 2005-02-16
PCT/US2005/004813 WO2006088449A1 (fr) 2005-02-16 2005-02-16 Sollicitation par affichage sur l'ecran destine a l'utilisateur et indiquant que le canal visionne est egalement disponible en haute definition
USPCT/US2005/05106 2005-02-17
PCT/US2005/005106 WO2006088460A1 (fr) 2005-02-17 2005-02-17 Navigation de canal en canal sur un televiseur a syntoniseur atsc integre

Publications (1)

Publication Number Publication Date
WO2006089022A1 true WO2006089022A1 (fr) 2006-08-24

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PCT/US2006/005470 WO2006089022A1 (fr) 2005-02-16 2006-02-16 Navigation sur un ensemble de chaines sur un poste de television a syntoniseur atsc integre

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008070133A2 (fr) 2006-12-06 2008-06-12 United Video Properties, Inc. Systèmes et procédés pour une sélection et un basculement de source multimédia
EP2091164B1 (fr) * 2008-02-13 2013-06-19 Sony Corporation Appareil de réception radio et procédé de rétablissement des sorties
US8619192B2 (en) 2007-06-21 2013-12-31 Microsoft Corporation Closed captioning preferences
US9160971B2 (en) 2008-12-23 2015-10-13 Rovi Technologies Corporation Content access
AU2014206218B2 (en) * 2006-12-06 2016-06-23 Rovi Guides, Inc. Systems and Methods for Media Source Selection and Toggling
WO2022121380A1 (fr) * 2020-12-07 2022-06-16 海信视像科技股份有限公司 Procédé de commutation de canal pour dispositif d'affichage et dispositif d'affichage

Citations (2)

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Publication number Priority date Publication date Assignee Title
US20040100585A1 (en) * 2002-11-25 2004-05-27 Yasuyuki Ikeguchi Broadcasting receiver
US20040158874A1 (en) * 2003-01-27 2004-08-12 Canon Kabushiki Kaisha Broadcast reception apparatus, broadcast reception method, program, and storage medium

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040100585A1 (en) * 2002-11-25 2004-05-27 Yasuyuki Ikeguchi Broadcasting receiver
US20040158874A1 (en) * 2003-01-27 2004-08-12 Canon Kabushiki Kaisha Broadcast reception apparatus, broadcast reception method, program, and storage medium

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2014206218B2 (en) * 2006-12-06 2016-06-23 Rovi Guides, Inc. Systems and Methods for Media Source Selection and Toggling
WO2008070133A2 (fr) 2006-12-06 2008-06-12 United Video Properties, Inc. Systèmes et procédés pour une sélection et un basculement de source multimédia
AU2007327991B2 (en) * 2006-12-06 2011-04-14 Rovi Guides, Inc. Systems and methods for media source selection and toggling
EP2495952A3 (fr) * 2006-12-06 2012-11-07 United Video Properties, Inc. Systèmes et procédés de sélection de source multimédia et de basculement
EP2495951A3 (fr) * 2006-12-06 2012-11-07 United Video Properties, Inc. Systèmes et procédés de sélection de source multimédia et de basculement
EP2495950A3 (fr) * 2006-12-06 2012-11-07 United Video Properties, Inc. Systèmes et procédés de sélection de source multimédia et de basculement
WO2008070133A3 (fr) * 2006-12-06 2008-11-20 United Video Properties Inc Systèmes et procédés pour une sélection et un basculement de source multimédia
KR101740204B1 (ko) * 2006-12-06 2017-05-25 유나이티드 비디오 프로퍼티즈, 인크. 미디어 소스 선택 및 토클링 시스템 및 방법
US8619192B2 (en) 2007-06-21 2013-12-31 Microsoft Corporation Closed captioning preferences
EP2091164B1 (fr) * 2008-02-13 2013-06-19 Sony Corporation Appareil de réception radio et procédé de rétablissement des sorties
US9160971B2 (en) 2008-12-23 2015-10-13 Rovi Technologies Corporation Content access
USRE48384E1 (en) 2008-12-23 2021-01-05 Rovi Technologies Corporation Content access
WO2022121380A1 (fr) * 2020-12-07 2022-06-16 海信视像科技股份有限公司 Procédé de commutation de canal pour dispositif d'affichage et dispositif d'affichage
US11924496B2 (en) 2020-12-07 2024-03-05 Hisense Visual Technology Co., Ltd. Channel switching method for display apparatus, and display apparatus

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