WO2008130133A1 - Inactive information providing method and video apparatus thereof - Google Patents

Inactive information providing method and video apparatus thereof Download PDF

Info

Publication number
WO2008130133A1
WO2008130133A1 PCT/KR2008/002158 KR2008002158W WO2008130133A1 WO 2008130133 A1 WO2008130133 A1 WO 2008130133A1 KR 2008002158 W KR2008002158 W KR 2008002158W WO 2008130133 A1 WO2008130133 A1 WO 2008130133A1
Authority
WO
WIPO (PCT)
Prior art keywords
inactive
message
information
hdmi
mode
Prior art date
Application number
PCT/KR2008/002158
Other languages
French (fr)
Inventor
Dong-Young Kim
Dae-Gyu Bae
Original Assignee
Samsung Electronics Co., Ltd.
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
Application filed by Samsung Electronics Co., Ltd. filed Critical Samsung Electronics Co., Ltd.
Priority to EP08741403A priority Critical patent/EP2137961A4/en
Publication of WO2008130133A1 publication Critical patent/WO2008130133A1/en

Links

Classifications

    • 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
    • H04N21/436—Interfacing a local distribution network, e.g. communicating with another STB or one or more peripheral devices inside the home
    • H04N21/4363—Adapting the video stream to a specific local network, e.g. a Bluetooth® network
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/2803—Home automation networks
    • 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
    • H04N21/436—Interfacing a local distribution network, e.g. communicating with another STB or one or more peripheral devices inside the home
    • 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
    • H04N21/436—Interfacing a local distribution network, e.g. communicating with another STB or one or more peripheral devices inside the home
    • H04N21/43615—Interfacing a Home Network, e.g. for connecting the client to a plurality of peripherals
    • 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
    • H04N21/436—Interfacing a local distribution network, e.g. communicating with another STB or one or more peripheral devices inside the home
    • H04N21/4363—Adapting the video stream to a specific local network, e.g. a Bluetooth® network
    • H04N21/43632—Adapting the video stream to a specific local network, e.g. a Bluetooth® network involving a wired protocol, e.g. IEEE 1394
    • H04N21/43635—HDMI
    • 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
    • H04N21/44227—Monitoring of local network, e.g. connection or bandwidth variations; Detecting new devices in the local network
    • 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
    • H04N5/84—Television signal recording using optical recording
    • H04N5/85—Television signal recording using optical recording on discs or drums
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/02—Details
    • H04L12/12—Arrangements for remote connection or disconnection of substations or of equipment thereof

Definitions

  • Apparatuses and methods consistent with the present invention relate to inactive information and a video apparatus. More particularly, apparatuses and methods consistent with the present invention relate to providing inactive information to a connected external device, and a video apparatus.
  • Background Art
  • FIG. 1 depicts a video system connected according to a High Definition Multimedia
  • HDMI Consumer Electronics Control
  • the TV 10 can be connected to various video apparatuses through the HDMI switch 15.
  • the TV 10 cannot receive the video signal from the DVDR 20. If an external device other than the DVDR 20 is connected according to the HDMI CEC specification and the HDMI switch 15 enters the inactive mode, the other external device cannot be used through the TV 10.
  • the present invention provides an inactive information providing method for generating and transmitting a message informing of an inactive mode of a video apparatus so as to enable a user to more easily connect and use an external device, and the video apparatus thereof.
  • the present invention provides an inactive information providing method for acquiring a message informing of an inactive mode of a connected external device from the external device, and a video apparatus thereof.
  • an inactive information providing method comprises, in an inactive mode of a device, generating an inactive message which provides notification of the inactive mode; and transmitting the inactive message to an external device connected according to an HDMI CEC specification.
  • the inactive message may comprise an inactive command code.
  • the inactive message may further comprise inactive reason information which indicates a cause of the inactive mode.
  • the inactive reason information may comprise power-off information, standby information, power save mode information, and sleep mode information.
  • the transmitting operation may broadcast the inactive message.
  • the inactive message may comprise an inactive command code, and a destination address in a header block of the inactive message may be assigned a destination address of the broadcasting.
  • a video apparatus comprises a controller which, in an inactive mode, generates an inactive message which provides notification of the inactive mode; and an interface which transmits the inactive message to an external device connected according to an HDMI CEC specification.
  • the inactive message may comprise an inactive command code.
  • the inactive message may further comprise inactive reason information which indicates a cause of the inactive mode.
  • the inactive reason information may comprise power-off information, standby information, power save mode information, and sleep mode information.
  • the interface may broadcast the inactive message.
  • the inactive message may comprise an inactive command code, and a destination address in a header block of the inactive message may be assigned a destination address of the broadcasting.
  • an inactive information providing method comprises connecting an external device according to an HDMI CEC specification; and receiving an inactive message informing of an inactive mode of the external device, from the external device.
  • the inactive information providing method may further comprise selecting another input signal when the inactive message is received.
  • the inactive information providing method may further comprise stopping a current service when the inactive message is received.
  • the inactive message may comprise an inactive command and inactive reason information which indicates a cause of the inactive mode.
  • a video apparatus comprises an interface which receives an inactive message which provides notification that an external device connected according to an HDMI CEC specification is inactive; and a controller which determines whether the external device is inactive or not based on the received inactive message.
  • the controller may select another input signal when the inactive message is received through the interface.
  • the controller may stop a current service when the inactive message is received through the interface.
  • the inactive message may comprise an inactive command and inactive reason information which indicates a cause of the inactive mode.
  • the inactive information providing method for generating and transmitting the message providing notification of the inactive mode of the video apparatus and the video apparatus thereof enable the user to more easily connect and use the external device.
  • the connected external devices are notified of the inactive mode of the HDMI switch, they can properly cope with the inactive mode of the HDMI switch. Accordingly, the user can easily determine the trouble with the HDMI switch.
  • the inactive message which is not defined in the HDMI CEC specification, allows the compatibility of the video apparatus.
  • FIG. 1 is a diagram of a video system according to an HDMI CEC specification
  • FIG. 2 is a block diagram of a video system to which exemplary embodiments of the present invention are applicable;
  • FIG. 3 is a flowchart of an inactive information providing method according to an exemplary embodiment of the present invention.
  • FIG. 4 is a diagram of a message structure according to the HDMI CEC specification according to an exemplary embodiment of the present invention.
  • FIG. 5 is a diagram of an inactive message structure according to an exemplary embodiment of the present invention.
  • FIG. 6 is a table of inactive reason information according to an exemplary embodiment of the present invention.
  • FIG. 7 is a block diagram of a video apparatus according to another exemplary embodiment of the present invention.
  • FIG. 8 is a flowchart of an inactive information providing method according to another exemplary embodiment of the present invention.
  • FIG. 9 is a block diagram of a video apparatus according to a further exemplary embodiment of the present invention.
  • FIG. 10 is a flowchart of an inactive information providing method according to a further exemplary embodiment of the present invention. Best Mode for Carrying Out the Invention
  • FIG. 2 is a block diagram of a video system to which the present invention is applicable.
  • the video system of FIG. 2 is constituted by connecting a TV 100 to a digital versatile disk recorder (DVDR) 200 using an HDMI switch 150 according to an HDMI CEC specification.
  • DVDR digital versatile disk recorder
  • the HDMI switch 150 comprises a plurality of HDMI ports. Using the HDMI switch
  • the HDMI switch 150 can provide a function for selecting an active video apparatus which is to be displayed on the display device among the connected video apparatuses.
  • the TV 100 comprises a TV function block 110, a TV HDMI interface 120, and a TV controller 130.
  • the TV function block 110 performs the TV proper function.
  • the TV function block 110 performs the TV proper function.
  • the TV function block 110 decodes and scales a broadcast signal received from a broadcasting station by cable or by radio and displays the processed broadcast signal so that the user can view the broadcast screen.
  • the TV function block 110 can display a video corresponding to a video signal received from the DVDR 200 through the TV HDMI interface 120 on a display, which is to be explained.
  • the TV HDMI interface 120 is connected to the DVDR 200 through the HDMI switch 150 according to the HDMI CEC specification to transmit and receive messages of mutual control function between the TV 100 and the DVDR 200.
  • the TV HDMI interface 120 can receive an inactive message providing notification of the inactive mode from the HDMI switch 150.
  • the TV controller 130 controls the operation of the TV function block 110 according to a user command or a received message.
  • the TV controller 130 can control the DVDR 200 by sending a control command to the DVDR 200 through the TV HDMI interface 120.
  • the TV 100 receives an inactive message from the HDMI switch 150.
  • the TV controller 130 can control the TV HDMI interface 120 to select an input signal of another video apparatus through another switch.
  • the TV controller 130 can also control the TV function block 110 to display its received broadcast video on a screen.
  • TV controller 130 can control the TV function block 110 to abort the current video replay service. In doing so, the TV controller 130 may control the TV function block 110 to display a message providing notification of the inactive mode of the HDMI switch 150 onto the screen.
  • the HDMI switch 150 of FIG. 2 comprises an HDMI switch controller 160, an HDMI switch controller 160, an HDMI switch controller 160, an HDMI switch controller 160, an HDMI switch controller 160, an HDMI switch controller 160, an HDMI switch controller 160, an HDMI switch controller 160, an HDMI switch controller 160, an HDMI switch controller 160, an HDMI switch controller 160, an HDMI switch controller 160, an HDMI switch controller 160, an HDMI switch controller 160, an HDMI switch controller 160, an HDMI switch controller 160, an HDMI switch controller 160, an HDMI switch controller 160, an HDMI switch controller 160, an HDMI switch controller 160, an HDMI switch controller 160, an HDMI switch controller 160, an HDMI switch controller 160, an HDMI switch controller 160, an HDMI switch controller 160, an HDMI switch controller 160, an HDMI switch controller 160, an HDMI switch controller 160, an HDMI switch controller 160, an HDMI switch controller 160, an HDMI switch controller 160, an HDMI switch controller 160, an HDMI switch controller 160, an HDMI switch controller 160, an HDMI switch controller 160, an HDMI switch controller 160, an HDMI switch controller 160, an HDMI switch controller 160, an HDMI switch controller 160, an HDMI switch controller 160, an HDMI switch controller 160
  • HDMI switch interface 170 a first HDMI port 180, and a second HDMI port 190.
  • the HDMI switch controller 160 controls overall operation of the HDMI switch 150.
  • the HDMI switch controller 160 checks the connection state of the HDMI ports 180 and 190, checks the input and output state of the connected ports, and distributes the load of the ports.
  • the HDMI switch controller 160 When the HDMI switch 150 becomes inactive, the HDMI switch controller 160 generates an inactive message providing notification of the inactive mode of the HDMI switch 150.
  • the inactive message comprises an inactive command code, and inactive reason information indicative of the cause of the inactive mode.
  • the inactive reason information comprises power-off information, standby information, power save mode information, and sleep mode information.
  • the HDMI switch controller 160 can control the broadcast of the inactive message to the external device by inputting a broadcast address value in a destination address of a header block of the inactive message, which is to be explained by referring to FIG. 5.
  • the HDMI switch interface 170 comprises the first HDMI port 180 and the second HDMI port 190. Note that the HDMI switch interface 170 can comprise a greater number of HDMI ports. By means of the HDMI ports, the HDMI switch interface 170 connects various video apparatuses to the HDMI switch 150 and enables the mutual communications .
  • the HDMI switch interface 170 broadcasts the inactive message generated at the
  • HDMI switch controller 160 to all external devices. For example, when the HDMI switch 150 is turned off, the inactive message generated at the HDMI switch 150 is received at the TV 100 and the DVDR 200 through the HDMI switch interface 170.
  • the DVDR 200 of FIG. 2 comprises a DVDR function block 210, a DVDR HDMI interface 220, and a DVDR controller 230.
  • the DVDR function block 210 performs proper functions of the DVDR 200.
  • DVDR function block 210 records the broadcast signal input from the TV 100 through the DVDR HDMI interface 200, to be explained, to a mounted DVD, or reads a video signal from the mounted DVD and provides the read video signal to the TV 100 through the DVDR HDMI interface 220.
  • the DVDR HDMI interface 220 is connected to the TV 100 through the HDMI switch 150 according to the HDMI CEC specification to transmit and receive video signals and messages between the TV 100 and the DVDR 200.
  • the DVDR HDMI interface 220 receives the inactive message from the HDMI switch 150.
  • the DVDR controller 230 controls the operation of the DVDR function block 210 according to the control command of the TV 100 which is input through the HDMI switch 150.
  • the DVDR controller 230 controls the operation of the DVDR function block 210 according to the inactive message fed from the HDMI switch 150. For example, when the HDMI switch 150 is turned off, the DVDR 200 receives the inactive message from the HDMI switch 150. The DVDR controller 230 can control the DVDR function block 210 to stop the DVDR replay.
  • HDMI switch 150 has been described as a separate device for the understanding of the exemplary embodiment of the present invention, the HDMI switch 150 may not be a separate device.
  • a module which functions as the HDMI switch may be embedded in a TV or a computer.
  • the HDMI switch controller 160 determines whether the HDMI switch 150 is inactive (S300).
  • the inactive mode indicates various states when the HDMI switch 150 cannot function as the switch. For example, the inactive mode corresponds to the power-off, the standby mode, the power save mode, and the sleep mode of the switch.
  • the HDMI switch controller 160 When the HDMI switch 150 is in the inactive mode, the HDMI switch controller 160 generates an inactive message (S310).
  • the inactive message comprises an inactive command code, and inactive reason information indicative of the inactive cause.
  • the inactive reason information comprises power-off information, standby information, power save mode information, and sleep mode information.
  • the HDMI switch 150 broadcasts the inactive message (S320).
  • the broadcast inactive message is received at the TV 100 and the DVDR 200.
  • the TV 100 Upon receiving the inactive message (S330-Y), the TV 100 cannot receive the video through the HDMI switch 150 any more. Thus, the TV 100 determines whether there exists another external device (S340).
  • the TV 100 receives a video signal from the another external device and displays the received video signal on the screen (S350). By contrast, when there is no another external device connected to the TV 100 (S340-N), the TV 100 displays its received broadcast video on the screen (S 360).
  • the DVDR 200 Upon receiving the inactive message (S370-Y), the DVDR 200 cannot display the video of the reproduced DVD on the TV 100. Thus, the DVDR 200 stops the DVD play (S380).
  • FIG. 4 shows a message structure according to the HDMI CEC specification according to an exemplary embodiment of the present invention.
  • the message based on the HDMI CEC specification comprises a start bit, a header block, a first data block, and a second data block.
  • the start bit indicates the start of the message. In general, a 1-bit start bit is most preferable. However, the start bit is not limited to 1 bit and may comprise several bits.
  • the header block comprises a source address and a destination address.
  • the source address is a message transmitting address and the destination address is a message receiving address.
  • the source address and the destination address may be in a logical address form.
  • the header block further comprises an End Of Message (EOM) bit (not shown) and an Acknowledge (ACK) bit (not shown).
  • EOM End Of Message
  • ACK Acknowledge
  • the EOM bit indicates the end of the message.
  • the EOM bit '0' indicates no end of the message and '1' indicates the end of the message.
  • the message comprises the EOM bit, the end of the message can be detected. Hence, the message can be of a variable length.
  • the ACK bit indicates whether the message is successfully received at the destination. For example, when the message is initially generated, the ACK bit is set to '1'. When the message is transferred to the device of the wrong destination address, the device responds with the ACK bit '1'. When the message is received at the destination device, the device responds with the altered ACK bit O'. The source device checks whether the message was successfully transmitted by examining whether the ACK bit of the response message is '0' or '1'.
  • the source address and the destination address of the HDMI CEC each comprise 4 bits, and the EOM bit and the ACK bit each comprise 1 bit. Accordingly, the header block comprises 10 bits in total.
  • the first data block comprises OPCODE which is a command code value corresponding to the message role. That is, the OPCODE carries the code value of the command code.
  • the command ⁇ Active Source> for delivering the active source address has the OPCODE value of 0x82.
  • the OPCODE is the 8-bit code value.
  • the first data block also comprises an EOM bit and an ACK bit. Hence, the first data block comprises 10 bits in total.
  • the second data block comprises OPERAND which is a parameter value of the command corresponding to the OPCODE. Accordingly, the OPERAND value is determined by the OPCODE. For example, the command ⁇ Active Source> accompanies the parameter value [Physical Address]. Hence, the OPERAND contains [Physical Address] information.
  • the OPERAND comprises a plurality of data blocks. Each block comprises 8-bit data, an EOM bit, and an ACK bit, and thus comprises 10 bits in total.
  • FIG. 5 shows an inactive message structure according to an exemplary embodiment of the present invention.
  • FIG. 6 is a table of the inactive reason information according to an exemplary embodiment of the present invention.
  • the inactive message of FIG. 5 comprises a start bit, a header block, a first data block, and a second data block.
  • the header block comprises a source address and a destination address. Since the
  • the first data block comprises an inactive command code recorded as OPCODE.
  • the inactive command code can be defined as ⁇ Inactive Route>.
  • the second data block comprises inactive reason information which specifies the cause of the inactive mode.
  • the inactive reason information may be carried in the second data block by allocating a code value by cases.
  • the inactive reason code can be designated as shown in FIG. 6.
  • the inactive reason code assigns 0x01 to the power-off, 0x02 to the standby, 0x03 to the power save, and 0x04 to the sleep mode. For example, when the HDMI switch 150 is turned off and thus enters the inactive mode, the inactive message ⁇ Inactive Route>(0x01) is broadcast.
  • the exemplary inactive mode comprises the four cases in FIG. 6, various additional inactive causes may be possible.
  • the exemplary inactive reason code is represented as the hexadecimal code, it can be expressed in other code forms.
  • the message is constructed as described in the HDMI CEC specification by way of example. Note that the message can be constructed according to other specification or as freely defined by the manufacturer.
  • the structure and the size of the message may vary from the message of the exemplary embodiment of the present invention.
  • the video system comprises the TV 100 and the DVDR 200 in the exemplary embodiment of the present invention
  • the present invention is applicable to a video system including other video apparatuses.
  • the video apparatuses for constituting the video system can comprise, for example, but not limited to, TV, DVDR, set-top box (STB), DVD player (DVDP), digital video recorder (DVR), personal video recorder (PVR), hard disk drive (HDD) player, blue-ray disk (BD) player, BD recorder, video cassette recorder (VCR), home theatre system, personal multimedia player (PMP), digital camera, digital camcorder.
  • HDMI switch 150 is provided as the separate device for the understanding of the present invention, it can be implemented as a module within the video apparatus.
  • the video apparatuses for constituting the video system are connected according to the HDMI CEC specification to ease the understanding of the present invention.
  • the present invention is applicable to any scheme for transceiving the video signals and messages between the video apparatuses.
  • FIG. 7 is a block diagram of a video apparatus according to another exemplary embodiment of the present invention.
  • a controller 710 of FIG. 7 For the inactive mode, a controller 710 of FIG. 7 generates an inactive message providing notification of the inactive mode.
  • An interface 720 transmits the inactive message to an external device connected according to the HDMI CEC specification.
  • FIG. 8 is a flowchart of an inactive information providing method according to another exemplary embodiment of the present invention.
  • the video apparatus In the inactive mode, the video apparatus generates the inactive message providing notification of the inactive mode (S810). Next, the video apparatus transmits the inactive message to the external device connected according to the HDMI CEC specification (S820).
  • FIG. 9 is a block diagram of a video apparatus according to a further embodiment of the present invention.
  • An interface 920 receives an inactive message providing notification that an external device connected according to the HDMI ECE specification becomes inactive.
  • a controller 910 determines whether the external device is in the inactive mode based on the received inactive message.
  • FIG. 10 is a flowchart of an inactive information providing method according to a further embodiment of the present invention.
  • the video apparatus connects an external device according to the HDMI CEC specification (SlOlO).
  • the video apparatus receives the inactive message providing notification that the external device connected according to the HDMI CEC specification is in the inactive mode (S 1020).
  • the video apparatus can transmit the inactive message to the connected external device.

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Databases & Information Systems (AREA)
  • Automation & Control Theory (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)

Abstract

An inactive information providing method of a video apparatus includes, in an inactive mode, generating an inactive message which provides notification of the inactive mode; and transmitting the inactive message to an external device connected according to a High Definition Multimedia Interface (HDMI) Consumer Electronics Control (CEC) specification.

Description

Description
INACTIVE INFORMATION PROVIDING METHOD AND VIDEO APPARATUS THEREOF
Technical Field
[1] Apparatuses and methods consistent with the present invention relate to inactive information and a video apparatus. More particularly, apparatuses and methods consistent with the present invention relate to providing inactive information to a connected external device, and a video apparatus. Background Art
[2] FIG. 1 depicts a video system connected according to a High Definition Multimedia
Interface (HDMI) Consumer Electronics Control (CEC) specification. The video system of FIG. 1 is created by connecting a television (TV) 10 to a digital video disk recorder (DVDR) 20 using an HDMI switch 15 according to the HDMI CEC specification. Not only video signals but also control signals are transmitted and received between the TV 10 and the DVDR 20 according to the HDMI CEC specification.
[3] Hence, the TV 10 can be connected to various video apparatuses through the HDMI switch 15.
[4] However, when the HDMI switch 15 is in an inactive mode, the TV 10 cannot receive the video signal from the DVDR 20. If an external device other than the DVDR 20 is connected according to the HDMI CEC specification and the HDMI switch 15 enters the inactive mode, the other external device cannot be used through the TV 10.
[5] As such, in the inactive mode of the HDMI switch 15, the video signal is not input and thus the TV 10 cannot display the normal screen. Also, the TV 10 cannot recognize the inactive mode of the HDMI switch 15.
[6] As a result, a user needs to check whether the HDMI switch 15 is operating normally
. In addition, a user who is not familiar with the video system may misunderstand the inactive mode of the HDMI switch 15 as a problem with the TV 10.
[7] Since many diverse external devices exist, the HDMI switch is required to connect various video apparatuses. Therefore, what is needed is a method for the user to more easily connect and use the external device. Disclosure of Invention
Technical Problem
[8] The present invention provides an inactive information providing method for generating and transmitting a message informing of an inactive mode of a video apparatus so as to enable a user to more easily connect and use an external device, and the video apparatus thereof. [9] The present invention provides an inactive information providing method for acquiring a message informing of an inactive mode of a connected external device from the external device, and a video apparatus thereof. Technical Solution
[10] According to an aspect of the present invention, an inactive information providing method comprises, in an inactive mode of a device, generating an inactive message which provides notification of the inactive mode; and transmitting the inactive message to an external device connected according to an HDMI CEC specification.
[11] The inactive message may comprise an inactive command code.
[12] The inactive message may further comprise inactive reason information which indicates a cause of the inactive mode.
[13] The inactive reason information may comprise power-off information, standby information, power save mode information, and sleep mode information.
[14] The transmitting operation may broadcast the inactive message.
[15] The inactive message may comprise an inactive command code, and a destination address in a header block of the inactive message may be assigned a destination address of the broadcasting.
[16] According to the aspect of the present invention, a video apparatus comprises a controller which, in an inactive mode, generates an inactive message which provides notification of the inactive mode; and an interface which transmits the inactive message to an external device connected according to an HDMI CEC specification.
[17] The inactive message may comprise an inactive command code.
[18] The inactive message may further comprise inactive reason information which indicates a cause of the inactive mode.
[19] The inactive reason information may comprise power-off information, standby information, power save mode information, and sleep mode information.
[20] The interface may broadcast the inactive message.
[21] The inactive message may comprise an inactive command code, and a destination address in a header block of the inactive message may be assigned a destination address of the broadcasting.
[22] According to another aspect of the present invention, an inactive information providing method comprises connecting an external device according to an HDMI CEC specification; and receiving an inactive message informing of an inactive mode of the external device, from the external device.
[23] The inactive information providing method may further comprise selecting another input signal when the inactive message is received.
[24] The inactive information providing method may further comprise stopping a current service when the inactive message is received.
[25] The inactive message may comprise an inactive command and inactive reason information which indicates a cause of the inactive mode.
[26] According to the another aspect of the present invention, a video apparatus comprises an interface which receives an inactive message which provides notification that an external device connected according to an HDMI CEC specification is inactive; and a controller which determines whether the external device is inactive or not based on the received inactive message.
[27] The controller may select another input signal when the inactive message is received through the interface.
[28] The controller may stop a current service when the inactive message is received through the interface.
[29] The inactive message may comprise an inactive command and inactive reason information which indicates a cause of the inactive mode.
Advantageous Effects
[30] As set forth above, the inactive information providing method for generating and transmitting the message providing notification of the inactive mode of the video apparatus and the video apparatus thereof enable the user to more easily connect and use the external device.
[31] Since the connected external devices are notified of the inactive mode of the HDMI switch, they can properly cope with the inactive mode of the HDMI switch. Accordingly, the user can easily determine the trouble with the HDMI switch.
[32] Furthermore, the inactive message, which is not defined in the HDMI CEC specification, allows the compatibility of the video apparatus. Brief Description of the Drawings
[33] The above and/or other aspects of the present invention will be more apparent by describing certain exemplary embodiments of the present invention with reference to the accompanying drawings, in which:
[34] FIG. 1 is a diagram of a video system according to an HDMI CEC specification;
[35] FIG. 2 is a block diagram of a video system to which exemplary embodiments of the present invention are applicable;
[36] FIG. 3 is a flowchart of an inactive information providing method according to an exemplary embodiment of the present invention;
[37] FIG. 4 is a diagram of a message structure according to the HDMI CEC specification according to an exemplary embodiment of the present invention;
[38] FIG. 5 is a diagram of an inactive message structure according to an exemplary embodiment of the present invention; [39] FIG. 6 is a table of inactive reason information according to an exemplary embodiment of the present invention;
[40] FIG. 7 is a block diagram of a video apparatus according to another exemplary embodiment of the present invention;
[41] FIG. 8 is a flowchart of an inactive information providing method according to another exemplary embodiment of the present invention;
[42] FIG. 9 is a block diagram of a video apparatus according to a further exemplary embodiment of the present invention; and
[43] FIG. 10 is a flowchart of an inactive information providing method according to a further exemplary embodiment of the present invention. Best Mode for Carrying Out the Invention
[44] Certain exemplary embodiments of the present invention will now be described in greater detail with reference to the accompanying drawings.
[45] In the following description, same drawing reference numerals are used for the same elements even in different drawings. The matters defined in the description, such as detailed construction and elements, are provided to assist in a comprehensive understanding of the invention. Thus, it is apparent that the present invention can be carried out without those specifically defined matters. Also, well-known functions or constructions are not described in detail since they would obscure the invention with unnecessary detail.
[46] FIG. 2 is a block diagram of a video system to which the present invention is applicable. The video system of FIG. 2 is constituted by connecting a TV 100 to a digital versatile disk recorder (DVDR) 200 using an HDMI switch 150 according to an HDMI CEC specification.
[47] The HDMI switch 150 comprises a plurality of HDMI ports. Using the HDMI switch
150, a user can connect diverse video apparatuses, for example, but not limited to, DVDR, game console, computer, home theatre, and so forth, to a single display device. The HDMI switch 150 can provide a function for selecting an active video apparatus which is to be displayed on the display device among the connected video apparatuses.
[48] As shown in FIG. 2, the TV 100 comprises a TV function block 110, a TV HDMI interface 120, and a TV controller 130.
[49] The TV function block 110 performs the TV proper function. The TV function block
110 decodes and scales a broadcast signal received from a broadcasting station by cable or by radio and displays the processed broadcast signal so that the user can view the broadcast screen. The TV function block 110 can display a video corresponding to a video signal received from the DVDR 200 through the TV HDMI interface 120 on a display, which is to be explained. [50] The TV HDMI interface 120 is connected to the DVDR 200 through the HDMI switch 150 according to the HDMI CEC specification to transmit and receive messages of mutual control function between the TV 100 and the DVDR 200.
[51] The TV HDMI interface 120 can receive an inactive message providing notification of the inactive mode from the HDMI switch 150.
[52] The TV controller 130 controls the operation of the TV function block 110 according to a user command or a received message. The TV controller 130 can control the DVDR 200 by sending a control command to the DVDR 200 through the TV HDMI interface 120.
[53] When receiving an inactive message from the HDMI switch 150, the TV controller
130 controls the TV HDMI interface 120 to select another input signal or controls the TV function block 110 to stop the current service.
[54] For example, when the HDMI switch 150 is turned off, the TV 100 receives an inactive message from the HDMI switch 150. The TV controller 130 can control the TV HDMI interface 120 to select an input signal of another video apparatus through another switch. The TV controller 130 can also control the TV function block 110 to display its received broadcast video on a screen.
[55] Since the video signal of the currently reproduced video is not input any more, the
TV controller 130 can control the TV function block 110 to abort the current video replay service. In doing so, the TV controller 130 may control the TV function block 110 to display a message providing notification of the inactive mode of the HDMI switch 150 onto the screen.
[56] The HDMI switch 150 of FIG. 2 comprises an HDMI switch controller 160, an
HDMI switch interface 170, a first HDMI port 180, and a second HDMI port 190.
[57] The HDMI switch controller 160 controls overall operation of the HDMI switch 150.
The HDMI switch controller 160 checks the connection state of the HDMI ports 180 and 190, checks the input and output state of the connected ports, and distributes the load of the ports.
[58] When the HDMI switch 150 becomes inactive, the HDMI switch controller 160 generates an inactive message providing notification of the inactive mode of the HDMI switch 150. The inactive message comprises an inactive command code, and inactive reason information indicative of the cause of the inactive mode. Herein, the inactive reason information comprises power-off information, standby information, power save mode information, and sleep mode information.
[59] The HDMI switch controller 160 can control the broadcast of the inactive message to the external device by inputting a broadcast address value in a destination address of a header block of the inactive message, which is to be explained by referring to FIG. 5.
[60] The HDMI switch interface 170 comprises the first HDMI port 180 and the second HDMI port 190. Note that the HDMI switch interface 170 can comprise a greater number of HDMI ports. By means of the HDMI ports, the HDMI switch interface 170 connects various video apparatuses to the HDMI switch 150 and enables the mutual communications .
[61] The HDMI switch interface 170 broadcasts the inactive message generated at the
HDMI switch controller 160 to all external devices. For example, when the HDMI switch 150 is turned off, the inactive message generated at the HDMI switch 150 is received at the TV 100 and the DVDR 200 through the HDMI switch interface 170.
[62] The DVDR 200 of FIG. 2 comprises a DVDR function block 210, a DVDR HDMI interface 220, and a DVDR controller 230.
[63] The DVDR function block 210 performs proper functions of the DVDR 200. The
DVDR function block 210 records the broadcast signal input from the TV 100 through the DVDR HDMI interface 200, to be explained, to a mounted DVD, or reads a video signal from the mounted DVD and provides the read video signal to the TV 100 through the DVDR HDMI interface 220.
[64] The DVDR HDMI interface 220 is connected to the TV 100 through the HDMI switch 150 according to the HDMI CEC specification to transmit and receive video signals and messages between the TV 100 and the DVDR 200. The DVDR HDMI interface 220 receives the inactive message from the HDMI switch 150.
[65] The DVDR controller 230 controls the operation of the DVDR function block 210 according to the control command of the TV 100 which is input through the HDMI switch 150.
[66] The DVDR controller 230 controls the operation of the DVDR function block 210 according to the inactive message fed from the HDMI switch 150. For example, when the HDMI switch 150 is turned off, the DVDR 200 receives the inactive message from the HDMI switch 150. The DVDR controller 230 can control the DVDR function block 210 to stop the DVDR replay.
[67] So far, the structure of the video system according to an exemplary embodiment of the present invention has been described by referring to FIG. 2.
[68] While the HDMI switch 150 has been described as a separate device for the understanding of the exemplary embodiment of the present invention, the HDMI switch 150 may not be a separate device. For example, a module which functions as the HDMI switch may be embedded in a TV or a computer.
[69] Now, the broadcast procedure of the inactive message by the HDMI switch 150 and the operations of the TV 100 and the DVDR 200 which receive the inactive message are described in detail by referring to FIG. 3.
[70] As shown in FIG. 3, the HDMI switch controller 160 determines whether the HDMI switch 150 is inactive (S300). The inactive mode indicates various states when the HDMI switch 150 cannot function as the switch. For example, the inactive mode corresponds to the power-off, the standby mode, the power save mode, and the sleep mode of the switch.
[71] When the HDMI switch 150 is in the inactive mode, the HDMI switch controller 160 generates an inactive message (S310). The inactive message comprises an inactive command code, and inactive reason information indicative of the inactive cause. The inactive reason information comprises power-off information, standby information, power save mode information, and sleep mode information.
[72] Next, the HDMI switch 150 broadcasts the inactive message (S320). The broadcast inactive message is received at the TV 100 and the DVDR 200.
[73] Upon receiving the inactive message (S330-Y), the TV 100 cannot receive the video through the HDMI switch 150 any more. Thus, the TV 100 determines whether there exists another external device (S340).
[74] When there is another external device connected to the TV 100 (S340-Y), the TV
100 receives a video signal from the another external device and displays the received video signal on the screen (S350). By contrast, when there is no another external device connected to the TV 100 (S340-N), the TV 100 displays its received broadcast video on the screen (S 360).
[75] Upon receiving the inactive message (S370-Y), the DVDR 200 cannot display the video of the reproduced DVD on the TV 100. Thus, the DVDR 200 stops the DVD play (S380).
[76] So far, the inactive information providing method of FIG. 3 has been illustrated in detail.
[77] The message structure is now explained in detail by referring to FIGS. 4, 5 and 6.
FIG. 4 shows a message structure according to the HDMI CEC specification according to an exemplary embodiment of the present invention.
[78] As shown in FIG. 4, the message based on the HDMI CEC specification comprises a start bit, a header block, a first data block, and a second data block.
[79] The start bit indicates the start of the message. In general, a 1-bit start bit is most preferable. However, the start bit is not limited to 1 bit and may comprise several bits.
[80] The header block comprises a source address and a destination address. The source address is a message transmitting address and the destination address is a message receiving address. The source address and the destination address may be in a logical address form.
[81] The header block further comprises an End Of Message (EOM) bit (not shown) and an Acknowledge (ACK) bit (not shown). The EOM bit indicates the end of the message. For example, the EOM bit '0' indicates no end of the message and '1' indicates the end of the message. When the message comprises the EOM bit, the end of the message can be detected. Hence, the message can be of a variable length.
[82] The ACK bit indicates whether the message is successfully received at the destination. For example, when the message is initially generated, the ACK bit is set to '1'. When the message is transferred to the device of the wrong destination address, the device responds with the ACK bit '1'. When the message is received at the destination device, the device responds with the altered ACK bit O'. The source device checks whether the message was successfully transmitted by examining whether the ACK bit of the response message is '0' or '1'.
[83] In general, the source address and the destination address of the HDMI CEC each comprise 4 bits, and the EOM bit and the ACK bit each comprise 1 bit. Accordingly, the header block comprises 10 bits in total.
[84] The first data block comprises OPCODE which is a command code value corresponding to the message role. That is, the OPCODE carries the code value of the command code. For example, the command <Active Source> for delivering the active source address has the OPCODE value of 0x82.
[85] The OPCODE is the 8-bit code value. The first data block also comprises an EOM bit and an ACK bit. Hence, the first data block comprises 10 bits in total.
[86] The second data block comprises OPERAND which is a parameter value of the command corresponding to the OPCODE. Accordingly, the OPERAND value is determined by the OPCODE. For example, the command <Active Source> accompanies the parameter value [Physical Address]. Hence, the OPERAND contains [Physical Address] information.
[87] The OPERAND comprises a plurality of data blocks. Each block comprises 8-bit data, an EOM bit, and an ACK bit, and thus comprises 10 bits in total. The HDMI CEC specification describes that the OPERAND can comprise a maximum of 14 data blocks. In other words, the second data block can comprise a maximum of 14 data blocks, therefore its maximum size is 140 bits (=14*10).
[88] As above, the message comprises the header block, the first data block, and the second data block, and its total size is 160 bits (=16*10).
[89] FIG. 5 shows an inactive message structure according to an exemplary embodiment of the present invention. FIG. 6 is a table of the inactive reason information according to an exemplary embodiment of the present invention.
[90] The inactive message of FIG. 5 comprises a start bit, a header block, a first data block, and a second data block.
[91] The header block comprises a source address and a destination address. Since the
HDMI switch 150 broadcasts the inactive message, the source address is a logical address value of the HDMI switch 150 and the destination address is a logical address value indicative of the broadcasting. [92] The first data block comprises an inactive command code recorded as OPCODE. For example, the inactive command code can be defined as <Inactive Route>.
[93] The second data block comprises inactive reason information which specifies the cause of the inactive mode. The inactive reason information may be carried in the second data block by allocating a code value by cases.
[94] The inactive reason code can be designated as shown in FIG. 6. The inactive reason code assigns 0x01 to the power-off, 0x02 to the standby, 0x03 to the power save, and 0x04 to the sleep mode. For example, when the HDMI switch 150 is turned off and thus enters the inactive mode, the inactive message <Inactive Route>(0x01) is broadcast.
[95] While the exemplary inactive mode comprises the four cases in FIG. 6, various additional inactive causes may be possible. While the exemplary inactive reason code is represented as the hexadecimal code, it can be expressed in other code forms.
[96] So far, the message structure has been illustrated based on FIGS. 4, 5 and 6.
[97] In the exemplary embodiment of the present invention, the message is constructed as described in the HDMI CEC specification by way of example. Note that the message can be constructed according to other specification or as freely defined by the manufacturer.
[98] Thus, the structure and the size of the message may vary from the message of the exemplary embodiment of the present invention.
[99] While the video system comprises the TV 100 and the DVDR 200 in the exemplary embodiment of the present invention, the present invention is applicable to a video system including other video apparatuses. The video apparatuses for constituting the video system can comprise, for example, but not limited to, TV, DVDR, set-top box (STB), DVD player (DVDP), digital video recorder (DVR), personal video recorder (PVR), hard disk drive (HDD) player, blue-ray disk (BD) player, BD recorder, video cassette recorder (VCR), home theatre system, personal multimedia player (PMP), digital camera, digital camcorder.
[100] While the HDMI switch 150 is provided as the separate device for the understanding of the present invention, it can be implemented as a module within the video apparatus.
[101] The video apparatuses for constituting the video system are connected according to the HDMI CEC specification to ease the understanding of the present invention. Besides the HDMI CEC specification, the present invention is applicable to any scheme for transceiving the video signals and messages between the video apparatuses.
[102] In the following, other embodiments of the present invention are described in detail by referring to FIGS. 7 through 10.
[103] FIG. 7 is a block diagram of a video apparatus according to another exemplary embodiment of the present invention. For the inactive mode, a controller 710 of FIG. 7 generates an inactive message providing notification of the inactive mode. An interface 720 transmits the inactive message to an external device connected according to the HDMI CEC specification.
[104] FIG. 8 is a flowchart of an inactive information providing method according to another exemplary embodiment of the present invention. In the inactive mode, the video apparatus generates the inactive message providing notification of the inactive mode (S810). Next, the video apparatus transmits the inactive message to the external device connected according to the HDMI CEC specification (S820).
[105] FIG. 9 is a block diagram of a video apparatus according to a further embodiment of the present invention. An interface 920 receives an inactive message providing notification that an external device connected according to the HDMI ECE specification becomes inactive. A controller 910 determines whether the external device is in the inactive mode based on the received inactive message.
[106] FIG. 10 is a flowchart of an inactive information providing method according to a further embodiment of the present invention. The video apparatus connects an external device according to the HDMI CEC specification (SlOlO). Next, the video apparatus receives the inactive message providing notification that the external device connected according to the HDMI CEC specification is in the inactive mode (S 1020).
[107] Therefore, the video apparatus can transmit the inactive message to the connected external device.
[108] The foregoing exemplary embodiments and advantages are merely exemplary and are not to be construed as limiting the present invention. The present teaching can be readily applied to other types of apparatuses. Also, the description of the exemplary embodiments of the present invention is intended to be illustrative, and not to limit the scope of the claims, and many alternatives, modifications, and variations will be apparent to those skilled in the art.

Claims

Claims
[I] An inactive information providing method comprising: generating an inactive message which informs of an inactive mode of a device; and transmitting the inactive message to an external device connected according to a
High Definition Multimedia Interface (HDMI) Consumer Electronics Control
(CEC) specification. [2] The inactive information providing method of claim 1, wherein the inactive message comprises an inactive command code. [3] The inactive information providing method of claim 2, wherein the inactive message further comprises inactive reason information which indicates a cause of the inactive mode. [4] The inactive information providing method of claim 3, wherein the inactive reason information comprises at least one of power-off information, standby information, power save mode information, and sleep mode information. [5] The inactive information providing method of claim 1, wherein the transmitting the inactive message further comprises broadcasting the inactive message. [6] The inactive information providing method of claim 5, wherein the inactive message comprises an inactive command code, and a destination address in a header block of the inactive message is assigned a destination address of the broadcasting. [7] A video apparatus comprising: a controller which, in an inactive mode, generates an inactive message which provides notification of the inactive mode; and an interface which transmits the inactive message to an external device connected according to a High Definition Multimedia Interface (HDMI)
Consumer Electronics Control (CEC) specification. [8] The video apparatus of claim 7, wherein the inactive message comprises an inactive command code. [9] The video apparatus of claim 8, wherein the inactive message further comprises inactive reason information which indicates a cause of the inactive mode. [10] The video apparatus of claim 9, wherein the inactive reason information comprises at least one of power-off information, standby information, power save mode information, and sleep mode information.
[I I] The video apparatus of claim 7, wherein the interface broadcasts the inactive message.
[12] The video apparatus of claim 11, wherein the inactive message comprises an inactive command code, and a destination address in a header block of the inactive message is assigned a destination address of the broadcasting. [13] An inactive information providing method comprising: connecting an external device according to a High Definition Multimedia
Interface (HDMI) Consumer Electronics Control (CEC) specification; and receiving an inactive message providing notification of an inactive mode of the external device, from the external device. [14] The inactive information providing method of claim 13, further comprising: selecting another input signal when the inactive message is received. [15] The inactive information providing method of claim 13, further comprising: stopping a current service when the inactive message is received. [16] The inactive information providing method of claim 13, wherein the inactive message comprises an inactive command and inactive reason information which indicates a cause of the inactive mode. [17] A video apparatus comprising: an interface which receives an inactive message which provides notification that an external device connected according to a High Definition Multimedia
Interface (HDMI) Consumer Electronics Control (CEC) specification is inactive; and a controller which determines whether the external device is inactive or not based on the received inactive message. [18] The video apparatus of claim 17, wherein the controller selects another input signal when the inactive message is received through the interface. [19] The video apparatus of claim 17, wherein the controller stops a current service when the inactive message is received through the interface. [20] The video apparatus of claim 17, wherein the inactive message comprises an inactive command and inactive reason information which indicates a cause of the inactive mode.
PCT/KR2008/002158 2007-04-24 2008-04-17 Inactive information providing method and video apparatus thereof WO2008130133A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP08741403A EP2137961A4 (en) 2007-04-24 2008-04-17 Inactive information providing method and video apparatus thereof

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US91367507P 2007-04-24 2007-04-24
US60/913,675 2007-04-24
KR10-2007-0067166 2007-07-04
KR1020070067166A KR20080095722A (en) 2007-04-24 2007-07-04 Method for providing inactive information and video apparatus thereof

Publications (1)

Publication Number Publication Date
WO2008130133A1 true WO2008130133A1 (en) 2008-10-30

Family

ID=40155325

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2008/002158 WO2008130133A1 (en) 2007-04-24 2008-04-17 Inactive information providing method and video apparatus thereof

Country Status (4)

Country Link
US (1) US20080266455A1 (en)
EP (1) EP2137961A4 (en)
KR (1) KR20080095722A (en)
WO (1) WO2008130133A1 (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070298656A1 (en) * 2006-06-22 2007-12-27 Good Mind Industries Co., Ltd. Switch apparatus for multiple high definition multimedia interface sources
KR101387396B1 (en) * 2007-04-24 2014-04-23 삼성전자주식회사 Method for providing service information and device thereof
JP4376931B2 (en) * 2007-10-31 2009-12-02 株式会社東芝 Display device and display method
US9123237B2 (en) * 2010-08-04 2015-09-01 Qualcomm Incorporated Controlling a remote electronic device in a control state
CN103974103B (en) * 2014-05-23 2017-12-12 国网江西省电力公司赣东北供电分公司 A kind of high-definition multimedia controller
US9300895B2 (en) * 2014-08-05 2016-03-29 Echostar Uk Holdings Limited Systems, methods, and apparatus for facilitating expansion of media device interface capabilities
US10457350B2 (en) * 2015-04-27 2019-10-29 Shimano Inc. Bicycle control system
EP3606080B1 (en) 2018-08-01 2023-09-20 Top Victory Investments Limited Method for notifying a user of a television to save power consumption by multiple multimedia devices connected to the television
JP6731602B1 (en) * 2019-02-28 2020-07-29 株式会社安川電機 Slave device and communication system

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20000073006A (en) * 1999-05-04 2000-12-05 구자홍 Method for controlling digital versatile disc player by command through the communcation interface
KR20070006163A (en) * 2005-07-07 2007-01-11 엘지전자 주식회사 Video system
KR20070006162A (en) * 2005-07-07 2007-01-11 엘지전자 주식회사 Video system

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030051136A1 (en) * 1995-11-06 2003-03-13 Pavel Curtis Multimedia coordination system
JP3286584B2 (en) * 1997-11-20 2002-05-27 株式会社日立製作所 Multiplexed router device
JP4366741B2 (en) * 1998-12-22 2009-11-18 ソニー株式会社 Digital broadcast receiving apparatus and digital signal processing apparatus recognition method
US20040025186A1 (en) * 2001-01-19 2004-02-05 Jennings Charles A. System and method for managing media
KR100440687B1 (en) * 2001-11-02 2004-07-15 한국전자통신연구원 System for transceiving information of digital cable broadcast and method thereof
US7636130B2 (en) * 2003-10-22 2009-12-22 Darwin Chang Television with automatic input switching
JP2006339901A (en) * 2005-05-31 2006-12-14 Toshiba Corp Environment-adapted digital apparatus controller and method therefor
US7930644B2 (en) * 2006-09-13 2011-04-19 Savant Systems, Llc Programming environment and metadata management for programmable multimedia controller
US7893941B2 (en) * 2006-09-15 2011-02-22 Rgb Spectrum Intelligent video graphics switcher

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20000073006A (en) * 1999-05-04 2000-12-05 구자홍 Method for controlling digital versatile disc player by command through the communcation interface
KR20070006163A (en) * 2005-07-07 2007-01-11 엘지전자 주식회사 Video system
KR20070006162A (en) * 2005-07-07 2007-01-11 엘지전자 주식회사 Video system

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
HITACHI ET AL., HDMI SPECIFICATION VERSION 1.3A, 10 November 2006 (2006-11-10)
See also references of EP2137961A4 *

Also Published As

Publication number Publication date
KR20080095722A (en) 2008-10-29
US20080266455A1 (en) 2008-10-30
EP2137961A1 (en) 2009-12-30
EP2137961A4 (en) 2010-06-30

Similar Documents

Publication Publication Date Title
EP2137961A1 (en) Inactive information providing method and video apparatus thereof
EP2178295B1 (en) Display system and display apparatus
JP4605231B2 (en) Electronic device, display system, transmission method and display method
EP2048883A1 (en) Display device and display system
EP2057838B1 (en) Method for providing service information and apparatus thereof
US20080271073A1 (en) Method of providing key code information and video device thereof
US20080098318A1 (en) Method for providing menu screen suitable for menus provided by external device and imaging device using the same
US8156256B2 (en) Method for managing logical address and device thereof
US20110209190A1 (en) Communication device, communication control method, and program
JP2015191515A (en) Electronic equipment
US8842224B2 (en) Image signal processing apparatus for detaching a plurality of modules and control method thereof
JP5171428B2 (en) Electronics
JP4306747B2 (en) Video processing apparatus and television receiver
JP4636121B2 (en) Video processing device
JP2012119839A (en) Image display apparatus
JP2012004964A (en) Display device
JP2010277651A (en) Key data recording system and reproducing device
JP2011086992A (en) Video display system
JP2010103639A (en) Device status notification method and digital interface
JP2008092132A (en) Electrical apparatus and video display system
KR20060075845A (en) Emboding method of the a/v network
JP2011182303A (en) Audio control apparatus and audio control system
JP2014072605A (en) Content output device and content data transmission system
JP2012174060A (en) Electronic apparatus and method for controlling electronic apparatus

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 08741403

Country of ref document: EP

Kind code of ref document: A1

WWE Wipo information: entry into national phase

Ref document number: 2008741403

Country of ref document: EP

NENP Non-entry into the national phase

Ref country code: DE