WO2019062519A1 - 一种接口装置及显示装置 - Google Patents

一种接口装置及显示装置 Download PDF

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Publication number
WO2019062519A1
WO2019062519A1 PCT/CN2018/104590 CN2018104590W WO2019062519A1 WO 2019062519 A1 WO2019062519 A1 WO 2019062519A1 CN 2018104590 W CN2018104590 W CN 2018104590W WO 2019062519 A1 WO2019062519 A1 WO 2019062519A1
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Prior art keywords
voltage
interface device
hdmi
capacitors
hdmi socket
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PCT/CN2018/104590
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English (en)
French (fr)
Inventor
程凯
Original Assignee
京东方科技集团股份有限公司
高创(苏州)电子有限公司
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Priority to US16/335,954 priority Critical patent/US20210337159A1/en
Publication of WO2019062519A1 publication Critical patent/WO2019062519A1/zh

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    • 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
    • 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
    • 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
    • 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
    • G06F3/14—Digital output to display device ; Cooperation and interconnection of the display device with other functional units
    • G06F3/147—Digital output to display device ; Cooperation and interconnection of the display device with other functional units using display panels
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2330/00—Aspects of power supply; Aspects of display protection and defect management
    • G09G2330/02—Details of power systems and of start or stop of display operation
    • 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
    • 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

Definitions

  • the present disclosure relates to the field of electrical communication technologies, and in particular, to an interface device and a display device.
  • a computer stick can be understood as a microcomputer host with a High Definition Multimedia Interface (HDMI).
  • HDMI High Definition Multimedia Interface
  • computer sticks on the market are connected to display devices through an HDMI interface to form a computer.
  • the computer stick is provided with a power input.
  • the power input of the computer stick is connected to the external power supply via a power adapter. In this way, the external power supply can supply power to the computer bar through the power adapter.
  • the rated input voltage of a computer stick is usually 5V, and the rated input current is usually 2A.
  • the present disclosure provides an interface device and a display device that can provide power to a computer stick through an HDMI interface.
  • an interface device includes: a power supply circuit and an HDMI socket.
  • the power supply circuit is coupled to the first power source and the HDMI socket, and configured to convert a first voltage from the first power source into a set voltage and provide the set voltage to the HDMI socket.
  • the HDMI socket is configured to output the set voltage to an external device coupled thereto.
  • the power supply circuit includes a first rectifier circuit and a voltage conversion circuit.
  • the first rectifier circuit is coupled to the first power source and the voltage conversion circuit, and the voltage conversion circuit is coupled to the HDMI socket.
  • the first rectifier circuit is configured to rectify the first voltage and provide a rectified first voltage to the voltage conversion circuit.
  • the voltage conversion circuit converts the rectified first voltage into the set voltage, and supplies the set voltage to the HDMI socket;
  • the voltage conversion circuit includes a DC voltage conversion chip.
  • the first rectifying circuit includes a plurality of capacitors in parallel. An anode of each of the plurality of capacitors is coupled to the voltage input terminal, and a cathode of each of the plurality of capacitors is grounded.
  • the power supply circuit further includes a second rectifier circuit.
  • the second rectifier circuit is coupled between the voltage conversion circuit and the HDMI socket.
  • the second rectifier circuit is configured to rectify the set voltage and provide a rectified set voltage to the HDMI socket.
  • the second rectifier circuit includes a plurality of capacitors in parallel. An anode of each of the plurality of capacitors is coupled to the HDMI socket, and a cathode of each of the plurality of capacitors is grounded.
  • the plurality of capacitors in the first rectifier circuit include electrolytic capacitors
  • the plurality of capacitors in the second rectifier circuit include electrolytic capacitors
  • the plurality of capacitors in the first rectifier circuit include an electrolytic capacitor and a ceramic capacitor.
  • the plurality of capacitors in the second rectifier circuit include an electrolytic capacitor and a ceramic capacitor.
  • the power supply circuit is coupled to a designated pin of the HDMI socket.
  • the designated pin is the 18th pin of the HDMI socket.
  • the HDMI socket is connected to an HDMI plug of an external device.
  • the set voltage is supplied to the external device through the HDMI socket and the HDMI plug.
  • the external device is a computer stick.
  • a display device includes an interface device as shown in the first aspect of the disclosure.
  • FIG. 1 shows a schematic block diagram of an interface device according to an embodiment of the present disclosure
  • FIG. 2 shows a schematic block diagram of an interface device in accordance with a further embodiment of the present disclosure
  • FIG. 3 shows a schematic block diagram of an interface device in accordance with still further embodiments of the present disclosure
  • FIG. 4 shows an exemplary circuit diagram of a power supply circuit in the interface device shown in FIG. 3;
  • FIG. 5 shows a schematic block diagram of a display device including an interface device according to an embodiment of the present disclosure.
  • HDMI is a digital video/audio interface technology that is a dedicated digital interface for image transmission.
  • the HDMI interface can transmit both audio and video signals.
  • the highest data transfer speed of the HDMI interface is 2.25GB/s.
  • the HDMI interface can be divided into four types: A, B, C, and D.
  • the Type A HDMI interface is the most common.
  • a flat panel TV or video device provides an interface of this size.
  • the Class A HDMI connector has 19 pins, a width of 13.9 mm, and a thickness of 4.45 mm. Most of the devices currently on the market have a Class A HDMI interface.
  • the Type B HDMI interface has 29 pins and a width of 21 mm. Its transmission bandwidth is almost double that of Class A.
  • the Class B HDMI interface is basically only used in some professional situations.
  • the Type C HDMI interface is used in small devices with a size of 10.42 x 2.4 mm, which is nearly 1/3 smaller than the Class A HDMI interface.
  • the Class D HDMI interface uses a dual-row pin design that is further reduced in size, similar to the miniUSB interface. Therefore, the Class D HDMI interface is more suitable for portable and in-vehicle devices.
  • the display device's HDMI interface can provide 5V, but cannot output 2A current. Therefore, this HDMI interface does not provide the power required by the computer stick.
  • An additional power adapter is required for the computer stick to be powered by an external power source. This adds cost and is not convenient to use.
  • Embodiments of the present disclosure provide an interface device that can provide power to an external device such as a computer stick through an HDMI interface.
  • FIG. 1 shows a schematic block diagram of an interface device of an embodiment of the present disclosure.
  • the interface device includes a power supply circuit 10 and an HDMI socket 20.
  • the power supply circuit 10 is coupled to the first power source V1 and the HDMI socket 20 .
  • the power supply circuit 10 is configured to convert a first voltage from the first power source V1 into a set voltage and provide the set voltage to the HDMI socket 20.
  • the HDMI socket 20 is configured to output the set voltage to an external device coupled thereto.
  • the first power source V1 is, for example, a DC power source converted from a commercial power source, which can provide, for example, a power exceeding 10 W.
  • the first power source V1 can provide a first voltage of, for example, 12V or 15V.
  • the first voltage is supplied to the power supply circuit 10.
  • the power supply circuit 10 can convert the input first voltage to a set voltage as needed.
  • the set voltage can be set according to the actual situation of the external device.
  • the set voltage is 5V.
  • the power supply circuit 10 supplies the set voltage obtained by the conversion to the HDMI socket 20.
  • the HDMI socket 20 can provide the set voltage to, for example, a computer bar coupled thereto. Since the first power source V1 can provide much more than 10 W of power, the electrical signal obtained by the conversion can supply 2 A of current to the computer bar.
  • the interface device according to an embodiment of the present disclosure can not only provide data communication with a computer stick, but also provide power to the computer stick.
  • the interface device in accordance with embodiments of the present disclosure can not only provide power to the computer stick, but also provide power to other external devices.
  • the interface device may convert a corresponding set voltage according to a voltage required by an external device coupled thereto.
  • the interface device can not only perform data transmission with an external device but also provide power to an external device.
  • the interface device can supply power to an external device through the HDMI interface, thereby eliminating the need for the external device to additionally configure the power adapter. This is both cost effective and easy to use.
  • FIG. 2 shows a schematic block diagram of an interface device in accordance with a further embodiment of the present disclosure.
  • the power supply circuit 10 includes a first rectifier circuit 101 and a voltage conversion circuit 102.
  • the first rectifier circuit 101 is coupled to the first power source V1 and the voltage conversion circuit 102.
  • the voltage conversion circuit 102 is coupled to the HDMI socket 20 .
  • the first rectifier circuit 101 is configured to rectify the first voltage and output the rectified first voltage to the voltage conversion circuit 102.
  • the signal-to-noise ratio of the rectified first voltage is higher than the first voltage before rectification.
  • the voltage conversion circuit 102 converts the rectified first voltage into the set voltage and supplies the set voltage to the HDMI socket.
  • FIG. 3 shows a schematic block diagram of an interface device in accordance with still further embodiments of the present disclosure.
  • the power supply circuit 10 further includes a second rectifier circuit 103.
  • the second rectifier circuit is coupled between the voltage conversion circuit and the HDMI socket.
  • the second rectifier circuit 103 is configured to rectify the set voltage and provide a rectified set voltage to the HDMI socket 20.
  • the rectified set voltage will have a higher signal to noise ratio than the set voltage before rectification.
  • the voltage conversion circuit 102 may include a DC voltage conversion chip.
  • the DC voltage conversion chip may employ an FR9889 DC-DC voltage conversion chip.
  • the FR9889DC-DC voltage conversion chip is provided with 8 ports. These ports include a gate drive push terminal BS, a power input terminal IN, a power switching output terminal SW, a ground terminal GND, a soft start terminal SS, an enable terminal EN, an open drain power supply terminal COMP, and a voltage feedback terminal FB.
  • the power input terminal IN is connected to the first power source V1.
  • a first capacitor C1 is connected between the gate driving push terminal BS and the power switching output terminal SW.
  • a second capacitor C2 is connected between the soft start terminal SS and the ground GND.
  • a first resistor R1 is connected between the enable terminal EN and the first power source V1.
  • a second resistor R2 and a first inductor L1 are connected between the voltage feedback terminal FB and the power switching output terminal SW.
  • a third resistor R3 is connected between the voltage feedback terminal FB and the ground GND.
  • a third capacitor C3 and a fourth resistor R4 are connected between the open drain power output terminal COMP and the ground GND.
  • a node between the first inductor L1 and the second resistor R2 is connected to the HDMI socket 20.
  • the capacitance value of the first capacitor C1 is, for example, 0.1 ⁇ F
  • the inductance value of the first inductor L1 is, for example, 200 ⁇ H.
  • the capacitance value, the resistance value, and the inductance value may be set according to actual conditions.
  • the first rectifying circuit 101 may include a plurality of electrolytic capacitors TC1 and TC2 connected in parallel.
  • the first rectifier circuit 101 may further include a plurality of ceramic capacitors C4, C5, and C6 in parallel with the plurality of electrolytic capacitors TC1 and TC2.
  • the anodes of the capacitors TC1, TC2, C4, C5, and C6 are coupled to the first power source V1, and the cathodes of the capacitors TC1, TC2, C4, C5, and C6 are grounded.
  • electrolytic capacitors are that the capacity per unit volume is very large and inexpensive. Since the anodes of the electrolytic capacitors TC1 and TC2 are coupled to the first power source V1 on the interface device, the cathodes of the electrolytic capacitors TC1 and TC2 are grounded. Therefore, the electrolytic capacitor can make the pulsating DC voltage from the first power source V1 become relatively stable DC. Voltage. Since the electrolytic capacitor has a large resistance to high-frequency current, a plurality of ceramic capacitors C4, C5, and C6 can be connected in parallel with the electrolytic capacitors TC1 and TC2 to absorb high-frequency interference.
  • the capacitance values of TC1 and TC2 are both 220 ⁇ F
  • the capacitance values of C4 and C5 are both 1 ⁇ F
  • the capacitance value of C6 is 4.7 ⁇ F.
  • the capacitance values of the electrolytic capacitors TC1, TC2 and the ceramic capacitors C4, C5, C6 may also be other values.
  • the above capacitance value can be set according to actual conditions.
  • a plurality of capacitors are connected in parallel to suppress ripple.
  • the second rectifier circuit 103 may include an electrolytic capacitor TC3.
  • the second rectifier circuit 103 may further include a plurality of ceramic capacitors C7 and C8 in parallel with the electrolytic capacitor TC3.
  • the anodes of the capacitors TC3, C7, and C8 are coupled to the HDMI socket, and the cathodes of the capacitors TC3, C7, and C8 are grounded.
  • the capacitance values of the electrolytic capacitor TC3 and the ceramic capacitors C7 and C8 can be set according to actual conditions.
  • the way in which the electrolytic capacitor TC3 is connected in parallel with the ceramic capacitors C7 and C8 can further suppress the ripple.
  • the power supply circuit 10 may be coupled to a designated pin of the HDMI socket 20.
  • the designated pin of the HDMI socket 20 can output a set voltage to an external device coupled thereto.
  • the HDMI socket 20 may employ a class A interface.
  • the 18th pin of the Class A interface is the power supply output.
  • the designated pin may be the 18th pin of the HDMI socket 20.
  • the power supply circuit 10 is connected in series with the 18th pin of the HDMI interface. In this way, the electrical function of the 18th pin of the HDMI interface is not affected, and the computer bar is powered by the 18th pin of the HDMI interface.
  • the functions of other pins of the HDMI socket 20 can be referred to the prior art and will not be described here.
  • the HDMI socket 20 may be connected to an HDMI plug of an external device.
  • the interface device outputs the set voltage to the external device through the HDMI socket 20 and an HDMI plug of the external device.
  • the HDMI socket 20 of the interface device is connected to the HDMI plug of the external device, the data signal can also be transmitted to the external device through other pins on the HDMI socket 20.
  • FIG. 5 shows a schematic block diagram of a display device including an interface device according to an embodiment of the present disclosure.
  • the display device may include the interface device described in the above embodiments.
  • a display device may convert a first voltage into a set voltage required by an external device through a power supply circuit.
  • the external device is powered by the HDMI interface, so that the external device does not need to be configured with an additional power adapter. This is both cost effective and easy to use.

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
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Abstract

本公开提供了一种接口装置及显示装置。所述接口装置上设置有供电电路和HDMI插座。所述供电电路耦接第一电源和HDMI插座，并被配置为将来自第一电源的第一电压转换成设定电压，并向HDMI插座提供设定电压。HDMI插座被配置为向与其耦接的外部设备输出设定电压。

Description

一种接口装置及显示装置
相关申请的交叉引用
本申请要求于2017年9月27日递交的中国专利申请第201710890350.3号的优先权，在此全文引用上述中国专利申请公开的内容以作为本申请的一部分。
技术领域
本公开涉及电通信技术领域，特别是涉及一种接口装置及显示装置。
背景技术
电脑棒可以被理解成一种具有高清晰度多媒体接口(High Definition Multimedia Interface，简称HDMI)的微型计算机主机。目前市场上的电脑棒通过HDMI接口连接显示设备，以形成计算机。
电脑棒设置有电源输入端。电脑棒的电源输入端通过电源适配器连接到外部电源。这样，外部电源可通过电源适配器向电脑棒供电。电脑棒的额定输入电压通常是5V，额定输入电流通常是2A。
发明内容
本公开提供一种接口装置及显示装置，其可以通过HDMI接口为电脑棒提供电源。
根据本公开的第一方面，提供了一种接口装置。该接口装置包括：供电电路和HDMI插座。所述供电电路耦接第一电源和所述HDMI插座，并被配置为将来自所述第一电源的第一电压转换成设定电压，并向所述HDMI插座提供所述设定电压。所述HDMI插座被配置为向与其耦接的外部设备输出所述设定电压。
在本公开的实施例中，所述供电电路包括第一整流电路和电压转换电路。所述第一整流电路耦接所述第一电源和所述电压转换电路，所述电压 转换电路耦接所述HDMI插座。所述第一整流电路被配置为对所述第一电压进行整流，并向所述电压转换电路提供整流后的第一电压。所述电压转换电路将所述整流后的第一电压转换成所述设定电压，并向所述HDMI插座提供所述设定电压；
在本公开的实施例中，所述电压转换电路包括直流电压转换芯片。
在本公开的实施例中，所述第一整流电路包括并联的多个电容。所述多个电容中的每一个电容的正极耦接所述电压输入端，所述多个电容中的每一个电容的负极接地。
在本公开的实施例中，所述供电电路还包括第二整流电路。所述第二整流电路耦接在所述电压转换电路与所述HDMI插座之间。所述第二整流电路被配置为对所述设定电压进行整流，并向所述HDMI插座提供整流后的设定电压。
在本公开的实施例中，所述第二整流电路包括并联的多个电容。所述多个电容中的每一个电容的正极耦接所述HDMI插座，所述多个电容中的每一个电容的负极接地。
在本公开的实施例中，所述第一整流电路中的所述多个电容包括电解电容，所述第二整流电路中的所述多个电容包括电解电容。
在本公开的实施例中，所述第一整流电路中的所述多个电容包括电解电容和陶瓷电容。
在本公开的实施例中，所述第二整流电路中的所述多个电容包括电解电容和陶瓷电容。
在本公开的实施例中，所述供电电路与所述HDMI插座的指定引脚耦接。
在本公开的实施例中，所述指定引脚为所述HDMI插座的第18引脚。
在本公开的实施例中，所述HDMI插座与外部设备的HDMI插头连接。所述设定电压通过所述HDMI插座及所述HDMI插头被提供给所述外部设备。
在本公开的实施例中，所述外部设备为电脑棒。
根据本公开的第二方面，提供了一种显示装置。所述显示装置包括如公开的第一方面所示的接口装置。
附图说明
为了更清楚地说明本公开的实施例的技术方案，下面将对实施例的附图进行简要说明，应当知道，以下描述的附图仅仅涉及本公开的一些实施例，而非对本公开的限制，其中：
图1示出根据本公开的实施例的接口装置的示意性框图；
图2示出根据本公开的进一步的实施例的接口装置的示意性框图；
图3示出根据本公开的再进一步的实施例的接口装置的示意性框图；
图4示出如图3所示的接口装置中的供电电路的示例性电路图；以及
图5示出包括根据本公开的实施例的接口装置的显示装置的示意性框图。
具体实施方式
为了使本公开的实施例的目的、技术方案和优点更加清楚，下面将结合附图，对本公开的实施例的技术方案进行清楚、完整的描述。显然，所描述的实施例是本公开的一部分实施例，而不是全部的实施例。基于所描述的本公开的实施例，本领域技术人员在无需创造性劳动的前提下所获得的所有其它实施例，也都属于本公开保护的范围。
除非另外定义，否则在此使用的所有术语(包括技术和科学术语)具有与本公开主题所属领域的技术人员所通常理解的相同含义。进一步将理解的是，诸如在通常使用的词典中定义的那些的术语应解释为具有与说明书上下文和相关技术中它们的含义一致的含义，并且将不以理想化或过于正式的形式来解释，除非在此另外明确定义。如在此所使用的，将两个或更多部分“连接”或“耦接”到一起的陈述应指这些部分直接结合到一起或通过一个或多个中间部件结合。
HDMI是一种数字化视频/音频接口技术，是适合影像传输的专用型数 字化接口。HDMI接口可以同时传送音频和影像信号。HDMI接口的最高数据传输速度为2.25GB/s。HDMI接口可分成A、B、C、D四种类型。A类(Type A)的HDMI接口是最常见的。一般平板电视或视频设备都提供了这种尺寸的接口。A类的HDMI接口有19针，宽度为13.9毫米、厚度为4.45毫米。目前市面上的设备绝大部分都具有A类的HDMI接口。B类(Type B)的HDMI接口有29针，宽度达到21毫米，其传输带宽几乎比A类大了一倍。B类的HDMI接口基本只应用于一些专业场合。C类(Type C)的HDMI接口应用于小型设备，其尺寸为10.42×2.4毫米，这比A类的HDMI接口小了将近1/3。D类(Type D)的HDMI接口采用了双排引脚设计，其尺寸进一步缩小，近似于miniUSB接口。因此D类的HDMI接口更适用于便携和车载设备。
显示设备的HDMI接口可以提供5V，但是无法输出2A的电流。因此，这种HDMI接口不能提供电脑棒所需的电力。需要为电脑棒额外配置电源适配器，以通过外部电源供电。这既增加了成本，又不方便使用。
本公开的实施例提供了一种接口装置，其可以通过HDMI接口为例如电脑棒的外部设备提供电源。
图1示出了本公开实施例的一种接口装置的示意性框图。所述接口装置包括供电电路10和HDMI插座20。所述供电电路10耦接第一电源V1和HDMI插座20。所述供电电路10被配置为将来自所述第一电源V1的第一电压转换成设定电压，并向所述HDMI插座20提供所述设定电压。所述HDMI插座20被配置为向与其耦接的外部设备输出所述设定电压。
在本公开的实施例中，第一电源V1例如是由市电转换成的直流电源，其可提供例如远超10W的功率。第一电源V1可提供例如12V或15V的第一电压。第一电压被提供给供电电路10。供电电路10可以根据需求将输入的第一电压转换为设定电压。在本公开实施例中，设定电压可以根据外部设备的实际情况进行设置。
例如，在外部设备为电脑棒的情况下，设定电压为5V。供电电路10将通过转换获得的设定电压提供给HDMI插座20。HDMI插座20例如可 向与其耦接的电脑棒提供该设定电压。由于第一电源V1能够提供远超10W的功率，因此，通过转换获得的电信号可向该电脑棒提供2A的电流。这样，根据本公开实施例的接口装置不仅可以与电脑棒进行数据通信，还可以为电脑棒提供电源。本领域的技术人员应了解，根据本公开实施例的接口装置不仅可以为电脑棒提供电源，还可以为其它外部设备提供电源。根据本公开实施例的接口装置可根据与其耦接的外部设备所需要的电压来转换相应的设定电压。这样，根据本公开实施例的接口装置不仅可以与外部设备进行数据传输，也可以为外部设备提供电源。
根据本公开实施例的接口装置可通过HDMI接口为外部设备提供电源，从而使外部设备无需额外配置电源适配器。这样，既节省成本又方便使用。
图2示出了根据本公开的进一步的实施例的接口装置的示意性框图。如图2所示，所述供电电路10包括第一整流电路101和电压转换电路102。所述第一整流电路101耦接第一电源V1和电压转换电路102。所述电压转换电路102耦接所述HDMI插座20。
由于第一电源V1可能是由市电转换成的直流电源，因此，在第一电压上可能存在纹波。所述第一整流电路101被配置为对所述第一电压进行整流，并向所述电压转换电路102输出整流后的第一电压。这样，相比于整流之前的第一电压，整流后的第一电压的信噪比更高。
所述电压转换电路102将所述整流后的第一电压转换成所述设定电压，并向所述HDMI插座提供所述设定电压。
图3示出了根据本公开的再进一步的实施例的接口装置的示意性框图。在图2所示的接口装置的基础上，所述供电电路10还包括第二整流电路103。所述第二整流电路耦接在所述电压转换电路与所述HDMI插座之间。
所述第二整流电路103被配置为对所述设定电压进行整流，向所述HDMI插座20提供整流后的设定电压。这样，相比于整流之前的设定电压，整流后的设定电压将具有更高的信噪比。
参照图4所示的供电电路的电路图，在本公开的实施例中，所述电压转换电路102可包括直流电压转换芯片。在本公开的实施例中，直流电压转换芯片可以采用FR9889DC-DC电压转换芯片。FR9889DC-DC电压转换芯片设置有8个端口。这些端口包括门驱动推动端BS、电源输入端IN、功率切换输出端SW、接地端GND、软启动端SS、使能端EN、开漏电源输出端COMP和电压反馈端FB。电源输入端IN连接第一电源V1。门驱动推动端BS和功率切换输出端SW之间连接有第一电容C1。软启动端SS与接地端GND之间连接有第二电容C2。使能端EN与第一电源V1之间连接有第一电阻R1。电压反馈端FB与功率切换输出端SW之间连接有第二电阻R2和第一电感L1。电压反馈端FB与接地端GND之间连接有第三电阻R3。开漏电源输出端COMP与接地端GND之间连接有第三电容C3和第四电阻R4。第一电感L1和第二电阻R2之间的节点连接HDMI插座20。在本公开的实施例中，第一电容C1的电容值例如是0.1μF，第一电感L1的电感值例如是200μH。在本公开实施例中，电容值、电阻值及电感值可以根据实际情况进行设置。
如图4所示，在本公开的实施例中，所述第一整流电路101可包括并联的多个电解电容TC1和TC2。在进一步的实施例中，所述第一整流电路101还可包括与所述多个电解电容TC1和TC2并联的多个陶瓷电容C4、C5和C6。上述电容TC1、TC2、C4、C5和C6的正极耦接所述第一电源V1，上述电容TC1、TC2、C4、C5和C6的负极接地。
电解电容的优点是单位体积的容量非常大，并且价格低廉。由于电解电容TC1、TC2的正极耦接接口装置上的第一电源V1，电解电容TC1、TC2的负极接地，因此，电解电容可以使来自第一电源V1的脉动直流电压变成相对比较稳定的直流电压。由于电解电容对高频电流的电阻很大，因此，可以将多个陶瓷电容C4、C5、C6与电解电容TC1、TC2并联，以吸收高频干扰。在一个示例中，TC1、TC2的电容值均为220μF，C4、C5的电容值均为1μF、C6的电容值为4.7μF。电解电容TC1、TC2和陶瓷电容C4、C5、C6的电容值还可以是其他值。在本公开实施例中，上述电 容值可以根据实际情况进行设置。多个电容并联的方式可起到抑制纹波的作用。
在本公开的实施例中，所述第二整流电路103可包括电解电容TC3。在进一步的实施例中，所述第二整流电路103还可包括与所述电解电容TC3并联的多个陶瓷电容C7和C8。上述电容TC3、C7、C8的正极耦接所述HDMI插座，上述电容TC3、C7、C8的负极接地。
在本实施例中，电解电容TC3和陶瓷电容C7、C8的电容值可以根据实际情况进行设置。电解电容TC3与陶瓷电容C7、C8并联的方式可起到进一步抑制纹波的作用。
在本公开的实施例中，所述供电电路10可与所述HDMI插座20的指定引脚耦接。这样，HDMI插座20的指定引脚可向与其耦接的外部设备输出设定电压。
在本公开的实施例中，HDMI插座20可以采用A类接口。A类接口的第18引脚为电源输出端。所述指定引脚可以是所述HDMI插座20的第18引脚。供电电路10与HDMI接口的第18引脚串联。这样，既不影响HDMI接口的第18引脚的电气功能，又可通过HDMI接口的第18引脚给电脑棒供电。HDMI插座20的其它引脚的功能可以参考现有技术，在此不再描述。
在本公开的实施例中，所述HDMI插座20可连接外部设备的HDMI插头。所述接口装置通过所述HDMI插座20及所述外部设备的HDMI插头向所述外部设备输出所述设定电压。而且，当接口装置的HDMI插座20与外部设备的HDMI插头连接时，数据信号也可以通过HDMI插座20上的其它引脚传输给外部设备。
图5示出包括根据本公开的实施例的接口装置的显示装置的示意性框图。所述显示装置可包括在上述实施例中描述的接口装置。
根据本公开的实施例的显示装置可通过供电电路将第一电压转换为外部设备所需的设定电压。通过HDMI接口为外部设备提供电源，从而使外部设备无需额外配置电源适配器。这样，既节省成本又使用方便。
本说明书中的各个实施例均采用递进的方式描述，每个实施例重点说 明的都是与其他实施例的不同之处。各个实施例之间相同或相似的部分可交叉引用。
最后，还需要说明的是，在本文中，诸如“第一”和“第二”之类的关系术语仅仅用来将一个实体或者操作与另一个实体或操作区分开来，而不一定要求或者暗示这些实体或操作之间存在任何这种实际的关系或者顺序。而且，术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含，从而使得包括一系列要素的过程、方法、商品或者设备不仅包括那些要素，而且还包括没有明确列出的其他要素，或者是还包括这种过程、方法、商品或者设备所固有的要素。在没有更多限制的情况下，由语句“包括一个……”限定的要素，并不排除在包括所述要素的过程、方法、商品或者设备中还存在另外的相同要素。
以上对本公开所提供的一种接口装置及显示装置的实施例进行了详细介绍，。本文中应用了具体个例对本公开的原理及实施方式进行阐述。以上实施例的说明只是用于帮助理解本公开的方法及其核心思想。同时，对于本领域的一般技术人员，依据本公开的思想，在具体实施方式及应用范围上均会有改变之处。因此，本公开的说明书的内容不应理解为对本公开的限制。

Claims (14)

  1. 一种接口装置，包括：供电电路和高清晰度多媒体接口HDMI插座；
    其中，所述供电电路耦接第一电源和所述HDMI插座，并被配置为将来自所述第一电源的第一电压转换成设定电压，并向所述HDMI插座提供所述设定电压；
    其中，所述HDMI插座被配置为向与其耦接的外部设备输出所述设定电压。
  2. 根据权利要求1所述的接口装置，其中，所述供电电路包括第一整流电路和电压转换电路，其中，所述第一整流电路耦接所述第一电源和所述电压转换电路，所述电压转换电路耦接所述HDMI插座；
    其中，所述第一整流电路被配置为对所述第一电压进行整流，并向所述电压转换电路提供整流后的第一电压；
    其中，所述电压转换电路将所述整流后的第一电压转换成所述设定电压，并向所述HDMI插座提供所述设定电压。
  3. 根据权利要求2所述的接口装置，其中，所述电压转换电路包括直流电压转换芯片。
  4. 根据权利要求2或3所述的接口装置，其中，所述第一整流电路包括并联的多个电容；
    其中，所述多个电容中的每一个电容的正极耦接所述第一电源，所述多个电容中的每一个电容的负极接地。
  5. 根据权利要求2-4中任一项所述的接口装置，其中，所述供电电路还包括第二整流电路，其中，所述第二整流电路耦接在所述电压转换电路与所述HDMI插座之间；
    其中，所述第二整流电路被配置为对所述设定电压进行整流，并向所述HDMI插座提供整流后的设定电压。
  6. 根据权利要求5所述的接口装置，其中，所述第二整流电路包括并联的多个电容；
    其中，所述多个电容中的每一个电容的正极耦接所述HDMI插座，所 述多个电容中的每一个电容的负极接地。
  7. 根据权利要求4或6所述的接口装置，其中，所述多个电容包括电解电容。
  8. 根据权利要求4所述的接口装置，其中，所述多个电容包括电解电容和陶瓷电容。
  9. 根据权利要求6所述的接口装置，其中，所述第二整流电路中的所述多个电容包括电解电容和陶瓷电容。
  10. 根据权利要求1至9任一项所述的接口装置，其中，所述供电电路与所述HDMI插座的指定引脚耦接。
  11. 根据权利要求10所述的接口装置，其中，所述指定引脚为所述HDMI插座的第18引脚。
  12. 根据权利要求1所述的接口装置，其中，所述HDMI插座与所述外部设备的HDMI插头连接；
    其中，所述设定电压通过所述HDMI插座及所述HDMI插头被提供给所述外部设备。
  13. 根据权利要求1所述的接口装置，其中，所述外部设备为电脑棒。
  14. 一种显示装置，包括如权利要求1-13中任一项所述的接口装置。
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