WO2014161444A1 - 高清晰多媒体接口hdmi接口单元及多媒体终端 - Google Patents

高清晰多媒体接口hdmi接口单元及多媒体终端 Download PDF

Info

Publication number
WO2014161444A1
WO2014161444A1 PCT/CN2014/074295 CN2014074295W WO2014161444A1 WO 2014161444 A1 WO2014161444 A1 WO 2014161444A1 CN 2014074295 W CN2014074295 W CN 2014074295W WO 2014161444 A1 WO2014161444 A1 WO 2014161444A1
Authority
WO
WIPO (PCT)
Prior art keywords
interface
module
external device
hdmi interface
hdmi
Prior art date
Application number
PCT/CN2014/074295
Other languages
English (en)
French (fr)
Inventor
许颖齐
何智勤
范存志
Original Assignee
华为终端有限公司
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 华为终端有限公司 filed Critical 华为终端有限公司
Priority to JP2016503532A priority Critical patent/JP2016521023A/ja
Priority to EP14778968.9A priority patent/EP2945369B1/en
Publication of WO2014161444A1 publication Critical patent/WO2014161444A1/zh
Priority to US14/828,822 priority patent/US9807451B2/en

Links

Images

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 or multiplex stream to a specific local network, e.g. a IEEE 1394 or Bluetooth® network
    • H04N21/43632—Adapting the video or multiplex stream to a specific local network, e.g. a IEEE 1394 or Bluetooth® network involving a wired protocol, e.g. IEEE 1394
    • H04N21/43635—HDMI
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
    • G09G5/003—Details of a display terminal, the details relating to the control arrangement of the display terminal and to the interfaces thereto
    • G09G5/006—Details of the interface to the display terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/222—Studio circuitry; Studio devices; Studio equipment
    • H04N5/262—Studio circuits, e.g. for mixing, switching-over, change of character of image, other special effects ; Cameras specially adapted for the electronic generation of special effects
    • H04N5/268—Signal distribution or switching
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/63—Generation or supply of power specially adapted for television receivers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/76—Television signal recording
    • H04N5/765—Interface circuits between an apparatus for recording and another apparatus
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
    • G06F13/38—Information transfer, e.g. on bus
    • G06F13/40—Bus structure
    • G06F13/4004—Coupling between buses
    • G06F13/4022—Coupling between buses using switching circuits, e.g. switching matrix, connection or expansion network
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
    • G06F3/0601—Interfaces specially adapted for storage systems
    • G06F3/0628—Interfaces specially adapted for storage systems making use of a particular technique
    • G06F3/0629—Configuration or reconfiguration of storage systems
    • G06F3/0635—Configuration or reconfiguration of storage systems by changing the path, e.g. traffic rerouting, path reconfiguration
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
    • G06F3/0601—Interfaces specially adapted for storage systems
    • G06F3/0668—Interfaces specially adapted for storage systems adopting a particular infrastructure
    • G06F3/067—Distributed or networked storage systems, e.g. storage area networks [SAN], network attached storage [NAS]
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2370/00—Aspects of data communication
    • G09G2370/12—Use of DVI or HDMI protocol in interfaces along the display data pipeline
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2370/00—Aspects of data communication
    • G09G2370/22—Detection of presence or absence of input display information or of connection or disconnection of a corresponding information source

Definitions

  • the present invention relates to communication technologies, and in particular, to a high-definition multimedia interface HDMI interface unit. And multimedia terminals.
  • HDMI High-Definition Multimedia Interface
  • SOURCE Set Top Box
  • SINK Access Device
  • the HDMI interface and the SOURCE device connected to the SOURCE device on the multimedia terminal The interface structure of the SINK device is the same, if the connected device type and port type are not the same Matching, the multimedia device cannot be connected to the SOURCE device or the SINK device, thereby Inconvenience for user use.
  • the invention provides a high-definition multimedia interface HDMI interface unit and a multimedia terminal, which are used for When the type of the device connected to the multimedia terminal does not match the port type, the multimedia device has no The problem of establishing a connection with a SOURCE device or a SINK device.
  • the present invention provides a high definition multimedia HDMI interface unit, including: a source SOURCE interface module, terminal SINK interface module, interface circuit module, processing module, and switching circuit Module
  • the source SOURCE interface module is configured to communicate with a SINK device
  • the SINK interface module is configured to communicate with a SOURCE device
  • the interface circuit module is configured to be connected to an HDMI interface of the external device
  • a processing module configured to identify a device type of the device connected to the interface circuit module, and Controlling the switching circuit module according to the identified device type
  • a switching circuit module configured to establish the interface circuit module under control of the processing module a connection between the HDMI interface of the connected external device and the source SOURCE interface module, or Establishing an HDMI interface of the external device connected to the interface circuit module and the SINK interface module The connection between the blocks.
  • the interface circuit module includes:
  • a power submodule configured to connect to a power port in an HDMI interface of the external device, to Providing a constant voltage to the HDMI interface of the external device;
  • the processing module is connected to output the HPD pin of the external device to the processing module Level signal.
  • the processing module is specifically configured to: acquire, by using the detection submodule, a level letter of the HPD pin No. if the level of the level signal is less than or equal to the first set threshold, identifying the external connection
  • the device is a SOURCE device type, and the switching circuit module is controlled to be an HDMI interface of the device. Data port is connected to the module; or, if the level signal level is greater than or equal to the first When the threshold is set, it is recognized that the external device is a SINK device type.
  • the processing module is further configured to: if The external device is a SOURCE device type, and the switching circuit module is controlled to establish the external device. a connection between a data port of the standby HDMI interface and the SINK interface module; or
  • the external connection is identified Prepared as a SINK device type, controlling the switching circuit module to establish an HDMI connection of the external device The connection between the data port of the port and the SOURCE interface module.
  • the power submodule includes:
  • a power device for generating a constant voltage or a multi-media with the HDMI interface unit Single board power connection of the body terminal;
  • a resistor device for respectively connecting to the power device and the ground terminal
  • a first switching device for disconnecting or turning on the power supply under the control of the processing module A power port in the HDMI interface of the external device.
  • the detecting submodule includes:
  • a level signal input end configured to receive the HPD lead in an HDMI interface of the external device Level signal input by the foot;
  • An HPD detecting end for detecting the level signal
  • An HPD output for outputting the level signal
  • a second switching device configured to establish the level signal input under the control of the processing module A connection between the end and the HPD detection end or a connection to the HPD output.
  • the switching circuit module includes:
  • a third switching device configured to establish the external device under the control of the processing module a connection between the HDMI interface and the source SOURCE interface module, or establishing the external device The connection between the HDMI interface and the terminal SINK interface module.
  • the present invention provides a multimedia terminal comprising at least one of the present invention High-definition multimedia HDMI interface unit provided by the example;
  • the HDMI interface unit is used for an HDMI interface with an external device of the SOURCE device type Connect, or connect to the HDMI interface of an external device of the SINK device type.
  • the processing in the HDMI interface unit is a central processing unit CPU of the multimedia terminal.
  • the high-definition multimedia interface HDMI unit and the multimedia terminal provided by the invention pass the processing mode
  • the block detects the device type of the connected external device and controls according to the identified device type
  • the switching circuit module establishes a connection between the HDMI interface of the external device and the source SOURCE interface module Connect, or establish a connection between the HDMI interface of the external device and the SINK interface module, thereby Realizing that the multimedia terminal recognizes the device type of the connected external device and establishes an external connection
  • the connection between the HDMI interface of the device and the SOURCE interface module or the SINK interface module is implemented. When the different types of devices connected to the multimedia terminal are matched with the port, the multimedia terminal is guaranteed
  • the SOURCE device or SINK device establishes a connection.
  • Embodiment 1 is a schematic structural diagram of Embodiment 1 of a high-definition multimedia interface HDMI interface unit according to the present invention
  • FIG. 2 is a schematic diagram of a high definition multimedia interface HDMI interface unit of the present invention.
  • Embodiment 1 is a schematic structural diagram of Embodiment 1 of a high-definition multimedia interface HDMI interface unit according to the present invention; Figure.
  • the high definition multimedia HDMI interface unit 10 provided by the embodiment of the present invention, Including SOURCE interface module 14, SINK interface module 15, interface circuit module 11, processing mode Block 12 and switching circuit module 13.
  • the SOURCE interface module 14 is configured to communicate with an external device of the SINK device type; SINK interface module 15 for communicating with an external device of the SOURCE device type; interface circuit
  • the module 11 is configured to be connected to an HDMI interface of the external device;
  • the processing module 12 is configured to identify the interface The device type of the external device connected to the circuit module 11, and controls the cutting according to the identified device type Switching circuit module 13; switching circuit module 13 for establishing connection under the control of processing module 12
  • the HDMI interface of the external device is usually a plug, and the plug passes through the cable and the outside. Connect the device to the electrical connection.
  • the interface circuit module 11 can be matched with the HDMI interface of the external device to The HDMI interface of the external device is easily inserted into the interface circuit module 11.
  • the processing module 12 can recognize the interface circuit mode in a state of being connected to the HDMI interface of the external device.
  • the device type of the external device connected to block 11 is SINK device type or SOURCE device class. Type, thereby controlling the switching circuit module 13 connected thereto according to the identified device type. Switching electricity
  • the way module 13 can be established between the SOURCE interface module 14 under the control of the processing module 12.
  • the processing module 12 recognizes The external device connected to the interface circuit module 11 is a SINK device, and the processing module 12 can control the connection.
  • the port circuit module 11 establishes a connection with the SOURCE interface module 14, thereby realizing the external connection.
  • the HDMI interface of the device is connected to the SOURCE interface module 14; if the processing module 12 recognizes The external device connected to the interface circuit module 11 is a SOURCE device, and the processing module 12 can control
  • the interface circuit module 11 establishes a connection with the SINK interface module 15, thereby implementing external connection
  • the HDMI interface of the device is connected to the SINK interface module 15.
  • the high definition multimedia interface HDMI unit provided by the embodiment of the invention passes through the processing module pair
  • the device type of the connected external device is detected, and the cut is controlled according to the identified device type.
  • the circuit module is configured to establish a connection between the HDMI interface of the external device and the SOURCE interface module. Or establishing a connection between the HDMI interface of the external device and the SINK interface module, thereby realizing
  • the multimedia terminal identifies the device type of the accessed device and establishes the external device
  • the connection between the HDMI interface and the SOURCE interface module or the SINK interface module is implemented. When the different types of devices connected to the multimedia terminal match the port, the multimedia terminal is guaranteed
  • the SOURCE device or SINK device establishes a connection.
  • the interface circuit module 11 may include: Source sub-module 21 and detection sub-module 22.
  • the power submodule 21 is configured to connect to a power port in an HDMI interface of the external device. Connected to provide a constant voltage to the HDMI interface of the external device; the detection sub-module 22 is used to respectively Connected to the HPD pin and processing module 12 in the HDMI interface of the external device to process the module Block 12 outputs the detected level signal of the HPD pin of the external device.
  • the power submodule 21 can be composed of a power device, a resistor device, and a first switch device. to make.
  • the power device is connected to the power port in the HDMI interface of the external device, and is used for production. a constant voltage is generated, or is connected to a single board power supply of the multimedia terminal where the HDMI interface unit 10 is located;
  • a resistor device is used to connect to the power device and the ground terminal, respectively;
  • the first switching device is used to process the mode Under the control of block 12, disconnect or turn on the power terminal in the HDMI interface of the power device and the external device. mouth.
  • FIG. 2 provides a possible circuit structure of the power sub-module 21, wherein the power device can For the power pin 5V-HDMI in Figure 2, the resistor device can be the resistor R1 and resistor in Figure 2. R2, the first switching device may be the switch SWITCH1 in FIG.
  • the switch SWITCH1 is in the closed state, that is, the HDMI interface unit 10 power supply pin 5V-HDMI and HDMI interface unit 10 on the board of the multimedia terminal 5V power connection.
  • Level of the HPD pin when the HDMI port of the external device is not connected The signal is provided by the board of the multimedia terminal where the HDMI interface unit 10 is located, due to the resistance device There is, at this time, the level signal of the HPD pin detected by the detection sub-module 22 is about 2.5V, and the power is
  • the resistance value of the resistive device may range from 10K ⁇ to 50K ⁇ . In this embodiment, the resistance device is set. The resistance is 27K ⁇ .
  • the detecting sub-module 22 may include: a level signal input end, an HPD detecting end, HPD output and second switching device.
  • the level signal input is the one in Figure 2.
  • HPD-IN the HPD detection end is the HPD-DET of Figure 2
  • the HPD output is the one in Figure 2.
  • HPD-OUT the second switching device is SWITCH2 in Figure 2.
  • level signal input The level signal used to receive the HPD pin input in the HDMI interface of the external device; HPD Detection end for detecting level signals; HPD output for output level signals; second switch The device is configured to connect the level signal input terminal to the HPD detection terminal under the control of the processing module 12. Or connect to the HPD output.
  • the CPU in FIG. 2 is the processing in the HDMI interface unit 10 provided by the embodiment of the present invention.
  • Module 12 The AD pin of the CPU is connected to the detection sub-module 22 for the received level signal Sampling is performed to cause the CPU to determine the device type of the external device based on the level signal.
  • the processing module 12 is specifically configured to: obtain the HPD reference by using the detection submodule 22 The level signal of the foot, if the level of the level signal is less than or equal to the first set threshold, the outer signal is recognized The connected device is of the SOURCE device type; or, if the level signal level is greater than or equal to the second device The threshold is determined to identify that the external device is a SINK device type.
  • the switch SWITCH1 is in the closed state, that is, HDMI
  • the 5V power supply on the interface is provided by a board of the multimedia terminal where the HDMI interface unit 10 is located;
  • SWITCH2 will use HPD pin HPD-IN and HPD-DET on the HDMI interface. Connected.
  • the level signal of the HPD pin of the SOURCE interface of the SOURCE device will be from the initial state. 2.5V is reduced to less than or equal to the first preset threshold, ie, the level of the level signal is less than or equal to 2.2V (determined by the resistance of the selected resistor); if the interface circuit module 11 is connected to the device
  • the standby type is SINK device.
  • the level signal is pulled up through the resistor to 5V, according to the circuit principle, the level signal of the HPD pin of the HDMI interface of the SINK device The level will rise from 2.5V in the initial state to greater than or equal to the second preset threshold, ie, the level letter The level of the number will be greater than or equal to 3.9V (determined by the magnitude of the resistance of the selected resistor).
  • the processing module 12 After the processing module 12 identifies the type of the external device to which the interface circuit module 11 is connected, Further control of SWITCH1 and SWITCH2 is required. If the identified external device is SOURCE device, need to handle module 12 control switch SWITCH1 disconnect, and control SWITCH2 is connected to HPD-OUT, and the level signal of the HPD pin is sent to the HDMI chip. That is, the level signal of the HPD pin is switched to the SINK interface mode through the switching circuit module 13. Block 15; if the external device is a SINK device, the processing module 12 continues to hold the switch SWITCH1 Closed, SWITCH2 is connected to HPD-OUT, and the level signal of the HPD pin is switched. The way module 13 switches to the SOURCE interface module 14.
  • the processing module 12 can also be used to: if the external device is identified as SOURCE Device type, the control switching circuit module 13 establishes the data port of the HDMI interface of the external device a connection with the SINK interface module 15; or, if the level signal level is greater than or equal to the first When the threshold is set, the external device is identified as the SINK device type, and the switching circuit module 13 is controlled. Establishing a data port of the HDMI interface of the external device and the SOURCE interface module 14 Connection.
  • the switching circuit module 13 may include a third switching device for processing the module 12 Under the control, connect the HDMI interface of the external device to the SOURCE interface module 14, or Connect the HDMI interface of the external device to the SINK interface module 15.
  • the third switching device can be the switch SWITCH3 in FIG. 2, and the SOURCE interface module 14 Can be HDMI-SOURCE in Figure 2, SINK interface module 15 can be the one in Figure 2 HDMI-SINK.
  • the pin HPD-DET When the interface circuit module 11 is connected to the HDMI interface of the external device, the pin HPD-DET will Detecting the level of the level signal of the HPD pin of the HDMI interface of the external device, if the level signal The level is less than or equal to 2.2V (determined by the resistance of the selected resistor), then the external connection is identified.
  • the device type is SOURCE device, and the processing module 12 controls the switch SWITCH3 to connect external devices.
  • the HDMI interface is connected to HDMI-SINK.
  • Module 12 controls switch SWITCH3 to connect the external device's HDMI interface with HDMI-SOURCE connection.
  • the high-definition multimedia interface HDMI unit detects the external connection
  • the level of the level signal of the HPD pin of the HDMI interface is changed, and the setting of the external device is identified.
  • Type, and the first switching device, the second switching device, and the third switch are controlled by the processing module Corresponding actions of the pieces, thereby realizing different types of devices and ports connected to the multimedia terminal When matching, ensure that the multimedia terminal establishes a connection with the SOURCE device or the SINK device.
  • High-definition multimedia HDMI interface unit 10 the HDMI interface unit 10, for use with SOURCE
  • the HDMI interface of the external device of the device type, or the external connection with the SINK device type The HDMI interface is connected.
  • the processing module 12 in the HDMI interface unit 10 may be in the middle of the multimedia terminal.
  • Central processing unit CPU Central processing unit
  • the multimedia terminal provided in this embodiment may include a high definition multimedia interface HDMI unit.
  • the problem that the type of the external device connected to the multimedia terminal is not matched with the port type in the prior art is solved.
  • the multimedia device cannot establish a connection with the SOURCE device or the SINK device.
  • the steps can be completed by the hardware associated with the program instructions.
  • the aforementioned program can be stored in a calculation
  • the machine can be read from the storage medium.
  • the program is executed, the steps including the above method embodiments are performed.
  • the foregoing storage medium includes: ROM, RAM, disk, or optical disk, and the like, which can be stored.
  • the medium of the program code includes: ROM, RAM, disk, or optical disk, and the like, which can be stored.

Abstract

本发明实施例提供一种高清晰多媒体接口HDMI接口单元及多媒体终端。该高清晰多媒体HDMI接口单元包括：SOURCE接口模块，用于与SINK设备通信；SINK接口模块，用于与SOURCE设备通信；接口电路模块，用于与外接设备的HDMI接口连接；处理模块，用于识别连接的外接设备的设备类型，并控制切换电路模块；切换电路模块，用于建立接口电路模块连接的外接设备的HDMI接口与SOURCE接口模块或SINK接口模块之间的连接。本发明实施例提供的高清晰多媒体接口HDMI接口单元及多媒体终端，实现了多媒体终端上所连接的不同类型设备与端口匹配时，保证多媒体终端与SOURCE设备或SINK设备建立连接。

Description

高清晰多媒体接口HDMI接口单元及多媒体终端
本申请要求于2013年04月02日提交中国专利局、申请号为 201310112980.X、发明名称为“高清晰多媒体接口HDMI接口单元及多媒体 终端”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本发明涉及通信技术，尤其涉及一种高清晰多媒体接口HDMI接口单元 及多媒体终端。
背景技术
现有的多媒体终端上，一般都存在两个甚至更多的高清晰多媒体接口 （High-Definition Multimedia Interface，简称为HDMI），有些HDMI接口只 能用于接入源设备（SOURCE），例如机顶盒（Set Top Box，简称为STB）， 有些HDMI接口只能用于接入端设备（SINK），例如电视机（Television，简 称为TV）。
现有技术中，多媒体终端上的与SOURCE设备连接的HDMI接口和与 SINK设备连接的接口结构相同，如果所连接的设备类型与端口类型不匹 配，则导致多媒体设备与SOURCE设备或SINK设备无法建立连接，从而 为用户使用带来不便。
发明内容
本发明提供一种高清晰多媒体接口HDMI接口单元及多媒体终端，用以 解决多媒体终端上所连接的设备类型与端口类型不匹配时，多媒体设备无 法与SOURCE设备或SINK设备建立连接的问题。
第一方面，本发明提供了一种高清晰多媒体HDMI接口单元，包括：源 SOURCE接口模块、端SINK接口模块、接口电路模块、处理模块和切换电路 模块；
所述源SOURCE接口模块，用于与SINK设备通信；
所述端SINK接口模块，用于与SOURCE设备通信；
所述接口电路模块，用于与外接设备的HDMI接口连接；
处理模块，用于识别所述接口电路模块连接的所述设备的设备类型，并 根据所识别的设备类型控制所述切换电路模块；
切换电路模块，用于在所述处理模块的控制下，建立所述接口电路模块 连接的外接设备的HDMI接口与所述源SOURCE接口模块之间的连接，或者， 建立所述接口电路模块连接的外接设备的HDMI接口与所述端SINK接口模 块之间的连接。
在第一方面的第一种可能的实现方式中，所述接口电路模块包括：
电源子模块，用于与所述外接设备的HDMI接口中的电源端口连接，以 向所述外接设备的HDMI接口提供恒定电压；
检测子模块，用于分别与所述外接设备的HDMI接口中的HPD引脚和所 述处理模块连接，以向所述处理模块输出所述外接设备的所述HPD引脚的 电平信号。
根据第一方面的第一种可能的实现方式，在第二种可能的实现方式中， 所述处理模块具体用于：通过所述检测子模块获取所述HPD引脚的电平信 号，若所述电平信号的电平小于或等于第一设定阈值，则识别出所述外接 设备为SOURCE设备类型，控制所述切换电路模块将所述设备的HDMI接口 的数据端口与所述模块连接；或者，若所述电平信号的电平大于或等于第 二设定阈值，则识别出所述外接设备为SINK设备类型。
根据第一方面的第一种可能的实现方式和第一方面的第二种可能的实 现方式，在第三种可能的实现方式中，所述处理模块还用于：若识别出所 述外接设备为SOURCE设备类型，则控制所述切换电路模块建立所述外接设 备的HDMI接口的数据端口与所述SINK接口模块之间的连接；或者，
若所述电平信号的电平大于或等于第二设定阈值，则识别出所述外接设 备为SINK设备类型，控制所述切换电路模块建立所述外接设备的HDMI接 口的数据端口与所述SOURCE接口模块之间的连接。
结合第一方面的第一种可能的实现方式、第一方面的第二种可能的实现 方式及第一方面的第三种可能的实现方式，在第四种可能的实现方式中， 所述电源子模块包括：
电源器件，用于产生恒定电压，或者与所述HDMI接口单元所在的多媒 体终端的单板电源连接；
电阻器件，用于分别与所述电源器件和接地端连接；
第一开关器件，用于在所述处理模块的控制下，断开或接通所述电源器 件与所述外接设备的HDMI接口中的电源端口。
结合第一方面的第一种可能的实现方式、第一方面的第二种可能的实现 方式、第一方面的第三种可能的实现方式及第一方面的第四种可能的实现 方式，在第五种可能的实现方式中，所述检测子模块包括：
电平信号输入端，用于接收所述外接设备的HDMI接口中的所述HPD引 脚输入的电平信号；
HPD检测端，用于检测所述电平信号；
HPD输出端，用于输出所述电平信号；
第二开关器件，用于在所述处理模块的控制下，建立所述电平信号输入 端与所述HPD检测端之间的连接或与所述HPD输出端之间的连接。
结合第一方面的第一种可能的实现方式、第一方面的第二种可能的实现 方式、第一方面的第三种可能的实现方式、第一方面的第四种可能的实现 方式及第一方面的第五种可能的实现方式，在第六种可能的实现方式中， 所述切换电路模块包括：
第三开关器件，用于在所述处理模块的控制下，建立所述外接设备的 HDMI接口与所述源SOURCE接口模块之间的连接，或者，建立所述外接设备 的HDMI接口与所述端SINK接口模块之间的连接。
第二方面，本发明提供了一种多媒体终端，包括至少一个本发明任意实 施例所提供的高清晰多媒体HDMI接口单元；
所述HDMI接口单元，用于与SOURCE设备类型的外接设备的HDMI接口 连接，或者与SINK设备类型的外接设备的HDMI接口连接。
在第二方面的第一种可能的实现方式中，所述HDMI接口单元中的处理 模块为所述多媒体终端的中央处理单元CPU。
本发明提供的高清晰多媒体接口HDMI单元及多媒体终端，通过处理模 块对所连接的外接设备的设备类型进行检测，并根据所识别的设备类型控 制切换电路模块建立外接设备的HDMI接口与源SOURCE接口模块之间的连 接，或者建立外接设备的HDMI接口与端SINK接口模块之间的连接，从而 实现了由多媒体终端对接入的外接设备的设备类型进行识别，并建立外接 设备的HDMI接口与SOURCE接口模块或者SINK接口模块之间的连接，实现 了多媒体终端上所连接的不同类型设备与端口匹配时，保证多媒体终端与 SOURCE设备或SINK设备建立连接。
附图说明
为了更清楚地说明本发明实施例中的技术方案，下面将对实施例描述中 所需要使用的附图作一简单地介绍，显而易见地，下面描述中的附图是本 发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动 性的前提下，还可以根据这些附图获得其他的附图。
图1为本发明高清晰多媒体接口HDMI接口单元实施例一的结构示意图；
图2为本发明高清晰多媒体接口HDMI接口单元原理图。
具体实施方式
为使本发明实施例的目的、技术方案和优点更加清楚，下面将结合本 发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描 述，显然，所描述的实施例是本发明一部分实施例，而不是全部的实施例。 基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提 下所获得的所有其他实施例，都属于本发明保护的范围。
图1为本发明高清晰多媒体接口HDMI接口单元实施例一的结构示意 图。如图1所示，本发明实施例提供的高清晰多媒体HDMI接口单元10， 包括SOURCE接口模块14、SINK接口模块15、接口电路模块11、处理模 块12和切换电路模块13。
其中，SOURCE接口模块14，用于与SINK设备类型的外接设备通信； SINK接口模块15，用于与SOURCE设备类型的外接设备通信；接口电路 模块11，用于与外接设备的HDMI接口连接；处理模块12，用于识别接口 电路模块11连接的外接设备的设备类型，并根据所识别的设备类型控制切 换电路模块13；切换电路模块13，用于在处理模块12的控制下，建立接 口电路模块11连接的外接设备的HDMI接口与SOURCE接口模块14之间 的连接，以实现SINK类型的外接设备与SOURCE接口模块14的通信，或 者，建立接口电路模块11连接的外接设备的HDMI接口与SINK接口模块 15之间的连接，以实现SOURCE类型的外接设备与SINK接口模块15的 通信。
具体地，外接设备的HDMI接口通常为一插头，该插头通过线缆与外 接设备电连接。接口电路模块11可以与外接设备的HDMI接口相匹配，以 便于外接设备的HDMI接口插入接口电路模块11中。在接口电路模块11 与外接设备的HDMI接口连接的状态下，处理模块12可以识别接口电路模 块11连接的外接设备的设备类型为SINK设备类型或者SOURCE设备类 型，从而根据所识别的设备类型控制与之连接的切换电路模块13。切换电 路模块13可以在处理模块12的控制下建立与SOURCE接口模块14之间 的连接或者建立与SINK接口模块15之间的连接。如果处理模块12识别出 接口电路模块11连接的外接设备为SINK设备，则处理模块12可以控制接 口电路模块11建立与SOURCE接口模块14之间的连接，从而实现将外接 设备的HDMI接口与SOURCE接口模块14连接；如果处理模块12识别出 接口电路模块11连接的外接设备为SOURCE设备，则处理模块12可以控 制接口电路模块11建立与SINK接口模块15之间的连接，从而实现将外接 设备的HDMI接口与SINK接口模块15连接。
本发明实施例提供的高清晰多媒体接口HDMI单元，通过处理模块对 所连接的外接设备的设备类型进行检测，并根据所识别的设备类型控制切 换电路模块建立外接设备的HDMI接口与SOURCE接口模块之间的连接， 或者建立外接设备的HDMI接口与SINK接口模块之间的连接，从而实现 了由多媒体终端对接入的设备的设备类型进行识别，并建立外接设备的 HDMI接口与SOURCE接口模块或者SINK接口模块之间的连接，实现了 多媒体终端上所连接的不同类型设备与端口匹配时，保证多媒体终端与 SOURCE设备或SINK设备建立连接。
图2为本发明高清晰多媒体接口HDMI接口单元原理图，如图2所示， 在本发明实施例一的技术方案的基础上，在本发明实施例提供的高清晰多 媒体接口HDMI接口单元10中，可选的，接口电路模块11可以包括：电 源子模块21和检测子模块22。
其中，电源子模块21，用于与外接设备的HDMI接口中的电源端口连 接，以向外接设备的HDMI接口提供恒定电压；检测子模块22，用于分别 与外接设备的HDMI接口中的HPD引脚和处理模块12连接，以向处理模 块12输出检测到的外接设备的HPD引脚的电平信号。
优选地，电源子模块21可以由电源器件、电阻器件及第一开关器件构 成。其中，电源器件与外接设备的HDMI接口中的电源端口接通，用于产 生恒定电压，或者与HDMI接口单元10所在的多媒体终端的单板电源连接； 电阻器件用于分别与电源器件和接地端连接；第一开关器件用于在处理模 块12的控制下，断开或接通电源器件与外接设备的HDMI接口中的电源端 口。
图2提供了电源子模块21的一种可行的电路结构，其中电源器件可以 为图2中的电源管脚5V-HDMI，电阻器件可以为图2中的电阻R1和电阻 R2，第一开关器件可以为图2中的开关SWITCH1。
在系统上电后，开关SWITCH1处于闭合状态，即，HDMI接口单元 10的电源管脚5V-HDMI与HDMI接口单元10所在的多媒体终端的单板上 的5V电源连接。在外接设备的HDMI接口没有接入时，HPD引脚的电平 信号由HDMI接口单元10所在的多媒体终端的单板提供，由于电阻器件的 存在，此时检测子模块22检测到的HPD引脚的电平信号为2.5V左右，电 阻器件的阻值的取值范围可以为10KΩ～50KΩ，本实施例中，设定电阻器件 的阻值为27KΩ。
优选地，检测子模块22可以包括：电平信号输入端、HPD检测端、 HPD输出端和第二开关器件。如图2所示，电平信号输入端即为图2中的 HPD-IN，HPD检测端即为图2的HPD-DET，HPD输出端即为图2中的 HPD-OUT，第二开关器件即为图2中的SWITCH2。其中，电平信号输入 端用于接收外接设备的HDMI接口中的HPD引脚输入的电平信号；HPD 检测端，用于检测电平信号；HPD输出端，用于输出电平信号；第二开关 器件用于在处理模块12的控制下，将电平信号输入端与HPD检测端连接 或与HPD输出端连接。
图2中的CPU即为本发明实施例提供的HDMI接口单元10中的处理 模块12。该CPU的AD引脚与检测子模块22连接，对接收到的电平信号 进行采样，以使CPU根据电平信号判断外接设备的设备类型。
可选的，处理模块12可以具体用于：通过检测子模块22获取HPD引 脚的电平信号，若电平信号的电平小于或等于第一设定阈值，则识别出外 接设备为SOURCE设备类型；或者，若电平信号的电平大于或等于第二设 定阈值，则识别出外接设备为SINK设备类型。
具体的：在系统上电之后，开关SWITCH1处于闭合状态，即HDMI 接口上的5V电源由HDMI接口单元10所在的多媒体终端的单板提供； SWITCH2在初始情况下，将HDMI接口上的HPD引脚HPD-IN与HPD-DET 相连。
若接口电路模块11外接设备的设备类型为SOURCE设备，由于在 SOURCE设备内部，电平信号通过电阻下拉至接地端，根据电路原理可知， SOURCE设备的HDMI接口的HPD引脚的电平信号的电平会由初始状态的 2.5V降低至小于或等于第一预设阈值，即，电平信号的电平会小于或等于 2.2V（由选取的电阻的阻值大小确定）；若接口电路模块11外接设备的设 备类型为SINK设备，由于在SINK设备内部，电平信号通过电阻上拉至 5V，根据电路原理可知，SINK设备的HDMI接口的HPD引脚的电平信号 的电平会由初始状态的2.5V升高至大于或等于第二预设阈值，即，电平信 号的电平会大于或等于3.9V（由选取的电阻的阻值大小确定）。
在处理模块12识别出接口电路模块11连接的外接设备的类型之后， 需要进一步对SWITCH1、SWITCH2进行控制。如果识别到的外接设备为 SOURCE设备，需要处理模块12控制开关SWITCH1断开，并且控制 SWITCH2与HPD-OUT连接，将HPD引脚的电平信号交由HDMI芯片处 理，即，将HPD引脚的电平信号通过切换电路模块13切换至SINK接口模 块15；如果外接设备为SINK设备，则处理模块12继续保持开关SWITCH1 闭合，SWITCH2与HPD-OUT连接，将HPD引脚的电平信号通过切换电 路模块13切换至SOURCE接口模块14。
进一步的，处理模块12还可以用于：若识别出外接设备为SOURCE 设备类型，则控制切换电路模块13建立外接设备的HDMI接口的数据端口 与SINK接口模块15之间的连接；或者，若电平信号的电平大于或等于第 二设定阈值，则识别出外接设备为SINK设备类型，控制切换电路模块13 建立外接设备的HDMI接口的数据端口与所述SOURCE接口模块14之间 的连接。
可选的，切换电路模块13可以包括第三开关器件，用于在处理模块12 的控制下，将外接设备的HDMI接口与SOURCE接口模块14连接，或者， 将外接设备的HDMI接口与SINK接口模块15连接。
第三开关器件可以为图2中的开关SWITCH3，SOURCE接口模块14 可以为图2中的HDMI-SOURCE，SINK接口模块15可以为图2中的 HDMI-SINK。
当接口电路模块11接入外接设备的HDMI接口后，引脚HPD-DET会 检测外接设备的HDMI接口的HPD引脚的电平信号的电平，若该电平信号 的电平小于或等于2.2V（由选取的电阻的阻值大小确定），则识别外接设 备的设备类型为SOURCE设备，处理模块12控制开关SWITCH3将外接设 备的HDMI接口与HDMI-SINK连接。
若引脚HPD-DET检测到的电平信号的电平大于或等于3.9V（由选取 的电阻的阻值大小确定），则设别外接设备的设备类型为SINK设备，处理 模块12控制开关SWITCH3将外接设备的HDMI接口与HDMI-SOURCE 连接。
本发明实施例提供的高清晰多媒体接口HDMI单元，通过检测外接设 备的HDMI接口的HPD引脚的电平信号的电平的变化，识别外接设备的设 备类型，并由处理模块控制第一开关器件、第二开关器件以及第三开关器 件的相应动作，从而实现了多媒体终端上所连接的不同类型设备与端口匹 配时，保证多媒体终端与SOURCE设备或SINK设备建立连接。
本发明另一实施例提供一种多媒体终端，包括上述任一实施例所提供 的高清晰多媒体HDMI接口单元10，该HDMI接口单元10，用于与SOURCE 设备类型的外接设备的HDMI接口连接，或者与SINK设备类型的外接设 备的HDMI接口连接。
其中，该HDMI接口单元10中的处理模块12可以为多媒体终端的中 央处理单元CPU。
本实施例提供的多媒体终端，可以包括高清晰多媒体接口HDMI单元， 解决了现有技术中多媒体终端上所连接的外接设备类型与端口类型不匹配 时，多媒体设备无法与SOURCE设备或SINK设备建立连接的问题。
本领域普通技术人员可以理解：实现上述各方法实施例的全部或部分 步骤可以通过程序指令相关的硬件来完成。前述的程序可以存储于一计算 机可读取存储介质中。该程序在执行时，执行包括上述各方法实施例的步 骤；而前述的存储介质包括：ROM、RAM、磁碟或者光盘等各种可以存储 程序代码的介质。
最后应说明的是：以上各实施例仅用以说明本发明的技术方案，而非 对其限制；尽管参照前述各实施例对本发明进行了详细的说明，本领域的 普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进 行修改，或者对其中部分或者全部技术特征进行等同替换；而这些修改或 者替换，并不使相应技术方案的本质脱离本发明各实施例技术方案的范围。

Claims (9)

  1. 一种高清晰多媒体HDMI接口单元，其特征在于，包括：源SOURCE 接口模块、端SINK接口模块、接口电路模块、处理模块和切换电路模块；
    所述SOURCE接口模块，用于与SINK设备类型的外接设备通信；
    所述SINK接口模块，用于与SOURCE设备类型的外接设备通信；
    所述接口电路模块，用于与外接设备的HDMI接口连接；
    处理模块，用于识别所述接口电路模块连接的所述外接设备的设备类 型，并根据所识别的设备类型控制所述切换电路模块；
    切换电路模块，用于在所述处理模块的控制下，建立所述接口电路模块 连接的外接设备的HDMI接口与所述SOURCE接口模块之间的连接，或者， 建立所述接口电路模块连接的外接设备的HDMI接口与所述SINK接口模块 之间的连接。
  2. 根据权利要求1所述的HDMI接口单元，其特征在于，所述接口电路 模块包括：
    电源子模块，用于与所述外接设备的HDMI接口中的电源端口连接，以 向所述外接设备的HDMI接口提供恒定电压；
    检测子模块，用于分别与所述外接设备的HDMI接口中的HPD引脚和所 述处理模块连接，以向所述处理模块输出所述外接设备的所述HPD引脚的 电平信号。
  3. 根据权利要求2所述的HDMI接口单元，其特征在于，所述处理模块 具体用于：通过所述检测子模块获取所述HPD引脚的电平信号，若所述电 平信号的电平小于或等于第一设定阈值，则识别出所述外接设备为 SOURCE设备类型；或者，若所述电平信号的电平大于或等于第二设定阈 值，则识别出所述外接设备为SINK设备类型。
  4. 根据权利要求2或3所述的HDMI接口单元，其特征在于，所述处理模 块用于：若识别出所述外接设备为SOURCE设备类型，则控制所述切换电 路模块建立所述外接设备的HDMI接口的数据端口与所述SINK接口模块之 间的连接；或者，
    若所述电平信号的电平大于或等于第二设定阈值，则识别出所述外接设 备为SINK设备类型，控制所述切换电路模块建立所述外接设备的HDMI接 口的数据端口与所述SOURCE接口模块之间的连接。
  5. 根据权利要求2-4任一项所述的HDMI接口单元，其特征在于，所述 电源子模块包括：
    电源器件，用于产生恒定电压，或者与所述HDMI接口单元所在的多媒 体终端的单板电源连接；
    电阻器件，用于分别与所述电源器件和接地端连接；
    第一开关器件，用于在所述处理模块的控制下，断开或接通所述电源器 件与所述外接设备的HDMI接口中的电源端口。
  6. 根据权利要求2-5任一项所述的HDMI接口单元，其特征在于，所述 检测子模块包括：
    电平信号输入端，用于接收所述外接设备的HDMI接口中的所述HPD引 脚输入的电平信号；
    HPD检测端，用于检测所述电平信号；
    HPD输出端，用于输出所述电平信号；
    第二开关器件，用于在所述处理模块的控制下，建立所述电平信号输入 端与所述HPD检测端之间的连接或与所述HPD输出端之间的连接。
  7. 根据权利要求1-6任一项所述的HDMI接口单元，其特征在于，所述 切换电路模块包括：
    第三开关器件，用于在所述处理模块的控制下，建立所述外接设备的 HDMI接口与所述SOURCE接口模块之间的连接，或者，建立所述外接设备 的HDMI接口与所述SINK接口模块之间的连接。
  8. 一种多媒体终端，其特征在于，包括至少一个如权利要求1-7任一项 所述的高清晰多媒体HDMI接口单元；
    所述HDMI接口单元，用于与SOURCE设备类型的外接设备的HDMI接口 连接，或者与SINK设备类型的外接设备的HDMI接口连接。
  9. 根据权利要求8所述的多媒体终端，其特征在于，所述HDMI接口单 元中的处理模块为所述多媒体终端的中央处理单元CPU。
PCT/CN2014/074295 2013-04-02 2014-03-28 高清晰多媒体接口hdmi接口单元及多媒体终端 WO2014161444A1 (zh)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP2016503532A JP2016521023A (ja) 2013-04-02 2014-03-28 高精細度マルチメディアインターフェイスｈｄｍｉユニットおよびマルチメディア端末
EP14778968.9A EP2945369B1 (en) 2013-04-02 2014-03-28 Hdmi interface unit and multimedia terminal
US14/828,822 US9807451B2 (en) 2013-04-02 2015-08-18 High-definition multimedia interface HDMI unit and multimedia terminal

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201310112980.X 2013-04-02
CN201310112980.XA CN104103924B (zh) 2013-04-02 2013-04-02 高清晰多媒体接口hdmi接口单元及多媒体终端

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US14/828,822 Continuation US9807451B2 (en) 2013-04-02 2015-08-18 High-definition multimedia interface HDMI unit and multimedia terminal

Publications (1)

Publication Number Publication Date
WO2014161444A1 true WO2014161444A1 (zh) 2014-10-09

Family

ID=51657584

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2014/074295 WO2014161444A1 (zh) 2013-04-02 2014-03-28 高清晰多媒体接口hdmi接口单元及多媒体终端

Country Status (5)

Country Link
US (1) US9807451B2 (zh)
EP (1) EP2945369B1 (zh)
JP (1) JP2016521023A (zh)
CN (1) CN104103924B (zh)
WO (1) WO2014161444A1 (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104967806A (zh) * 2015-07-28 2015-10-07 深圳市泰霖科技有限公司 基于hdmi接口的切换电路

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10565153B2 (en) * 2014-11-18 2020-02-18 Caavo Inc Auto detection and adaptive configuration of HDMI ports
WO2016081636A1 (en) 2014-11-18 2016-05-26 Branch Media Labs, Inc. Seamless setup and control for home entertainment devices and content
CN105676986B (zh) * 2014-11-20 2019-01-22 鸿富锦精密工业(武汉)有限公司 电子设备接口切换系统
CN104618678A (zh) * 2015-02-09 2015-05-13 李鑫建 一种自动识别hdmi外部连接环境的系统
US10067894B1 (en) * 2015-08-19 2018-09-04 Amazon Technologies, Inc. Cable-based configuration
US9934188B2 (en) * 2015-08-27 2018-04-03 Kabushiki Kaisha Toshiba Electronic device with connector for video signal interface
CN105655838B (zh) * 2015-12-28 2018-12-14 联想(北京)有限公司 一种hdmi连接器的电源能量控制方法及系统
US10043398B2 (en) 2016-03-25 2018-08-07 International Business Machines Corporation Drone coordination
US10013328B2 (en) * 2016-04-21 2018-07-03 Arris Enterprises Llc Incorrectly connected HDMI cable indicator
KR20180067108A (ko) * 2016-12-12 2018-06-20 삼성전자주식회사 외부 전자 장치의 상태를 ui에 나타내는 디스플레이 장치 및 디스플레이 장치의 제어 방법
US10701284B2 (en) 2017-02-10 2020-06-30 Caavo Inc Determining state signatures for consumer electronic devices coupled to an audio/video switch
CN110545392B (zh) * 2019-08-27 2020-12-18 海信视像科技股份有限公司 一种电路板、其制备方法及显示装置
CN110769308B (zh) * 2019-12-25 2021-03-30 深圳创维－Rgb电子有限公司 信号通道切换方法、显示终端及存储介质
CN111818287A (zh) * 2020-07-03 2020-10-23 深圳市炬力北方微电子有限公司 无线影音传输器及无线影音传输方法
CN114597706B (zh) * 2022-03-16 2024-02-06 深圳新联胜光电科技有限公司 Hdmi线缆组件及信号传输方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090015723A1 (en) * 2007-06-18 2009-01-15 Sony Corporation Of Japan Media switching device
CN102422638A (zh) * 2010-02-12 2012-04-18 索尼公司 电子设备和所连接的外部设备的数字接口确定方法
CN102572352A (zh) * 2011-12-26 2012-07-11 中兴通讯股份有限公司 Hdmi复用方法、hdmi、以及带有hdmi的设备

Family Cites Families (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007023437A2 (en) * 2005-08-23 2007-03-01 Koninklijke Philips Electronics N.V. Method of controlling power states in a multimedia system
US8810732B1 (en) * 2007-02-09 2014-08-19 Aliphcom Auto-select algorithm for a high-definition multimedia interface switch
US8429713B2 (en) * 2007-04-02 2013-04-23 Sony Corporation Method and apparatus to speed transmission of CEC commands
US8510798B2 (en) * 2007-04-02 2013-08-13 Sony Corporation Authentication in an audio/visual system having multiple signaling paths
JP2009060204A (ja) * 2007-08-30 2009-03-19 Panasonic Corp ソース／シンク兼用機器
JP4831081B2 (ja) 2008-01-22 2011-12-07 ソニー株式会社 送信装置及びフレームレート変換システム
US8286210B2 (en) * 2008-11-13 2012-10-09 Sony Corporation HDMI switching technology for the coupling of consumer electronic control and/or non-consumer electronic control devices in an audio/visual environment
CN201349268Y (zh) * 2008-12-15 2009-11-18 康佳集团股份有限公司 一种液晶电视的接口电路及液晶电视
US8242803B2 (en) * 2009-06-26 2012-08-14 Broadcom Corporation HDMI and displayport dual mode transmitter
US8345681B2 (en) * 2009-09-23 2013-01-01 Samsung Electronics Co., Ltd. Method and system for wireless communication of audio in wireless networks
US8674679B2 (en) * 2009-10-08 2014-03-18 Qualcomm Incorporated Power saving during a connection detection
US8832844B2 (en) * 2009-12-04 2014-09-09 Parade Technologies, Ltd. Fast switching for multimedia interface system having content protection
EP2385517A1 (en) * 2010-05-05 2011-11-09 NXP Semiconductors B.V. System and method for operating an electronic device having an HDMI port that is shared between an HDMI source function and an HDMI sink function of the electronic device
JP2012015649A (ja) * 2010-06-29 2012-01-19 Toshiba Corp 双方向通信インターフェース装置及び双方向通信インターフェースシステム
JP5733953B2 (ja) * 2010-11-09 2015-06-10 キヤノン株式会社 電子機器
CN201927859U (zh) * 2011-01-10 2011-08-10 华为终端有限公司 一种可复用的接口
JP2012199643A (ja) * 2011-03-18 2012-10-18 Panasonic Corp 通信制御システム、及びシンク機器
US9232265B2 (en) * 2011-03-31 2016-01-05 Lattice Semiconductor Corporation Method, apparatus and system for transitioning an audio/video device between a source mode and a sink mode

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090015723A1 (en) * 2007-06-18 2009-01-15 Sony Corporation Of Japan Media switching device
CN102422638A (zh) * 2010-02-12 2012-04-18 索尼公司 电子设备和所连接的外部设备的数字接口确定方法
CN102572352A (zh) * 2011-12-26 2012-07-11 中兴通讯股份有限公司 Hdmi复用方法、hdmi、以及带有hdmi的设备

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP2945369A4 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104967806A (zh) * 2015-07-28 2015-10-07 深圳市泰霖科技有限公司 基于hdmi接口的切换电路
CN104967806B (zh) * 2015-07-28 2018-03-16 深圳市泰霖科技有限公司 基于hdmi接口的切换电路

Also Published As

Publication number Publication date
CN104103924B (zh) 2017-04-26
EP2945369A4 (en) 2015-12-16
US20150358675A1 (en) 2015-12-10
EP2945369A1 (en) 2015-11-18
US9807451B2 (en) 2017-10-31
EP2945369B1 (en) 2021-10-27
CN104103924A (zh) 2014-10-15
JP2016521023A (ja) 2016-07-14

Similar Documents

Publication Publication Date Title
WO2014161444A1 (zh) 高清晰多媒体接口hdmi接口单元及多媒体终端
EP3471404B1 (en) Electronic apparatus
EP2385517A1 (en) System and method for operating an electronic device having an HDMI port that is shared between an HDMI source function and an HDMI sink function of the electronic device
US10418213B2 (en) Port connection circuit, port connection control method and electronic device
WO2016169140A1 (zh) Usb接口复用的电路、方法和装置
CN104618836A (zh) 通讯装置
CN108352664A (zh) USB Type-C插头及线缆
CN201118817Y (zh) 热插拔接口电路及具有热插拔接口电路的电视机
CN104932999B (zh) 一种通用串行总线接口模式切换装置及智能终端
US10079688B2 (en) Network port and ethernet device integrating powered device and power sourcing equivalent in a port
US9942378B2 (en) Display device and method for implementing incoming notification function with respect to MHL signal source
WO2017054655A1 (zh) Hdmi接口测试夹具及测试方法
CA2881352C (en) Power for an hdmi source device
JP6491760B2 (ja) インターフェース識別方法および端末
CN104346308B (zh) 电子装置
CN212324235U (zh) 一种视频信号切换电路及一种信号切换设备
WO2017101308A1 (zh) 电视信号源自动切换装置
CN202889491U (zh) 一种在矩阵中实现hdmi信号切换的装置
CN203387601U (zh) 一种带中控插卡式高清混合矩阵设备
CN104780431B (zh) 跨设备使用语音输入的系统及方法
WO2018130129A1 (zh) 共地检测电路及其检测方法
CN204810461U (zh) 一种视频设备
CN204733260U (zh) Hdmi信号切换适配器
US11846659B2 (en) Power capability determination device, electronic device, and power capability determination method
CN202150900U (zh) 电视终端设备

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: 14778968

Country of ref document: EP

Kind code of ref document: A1

WWE Wipo information: entry into national phase

Ref document number: 2014778968

Country of ref document: EP

ENP Entry into the national phase

Ref document number: 2016503532

Country of ref document: JP

Kind code of ref document: A

NENP Non-entry into the national phase

Ref country code: DE