WO2017215139A1 - 电子设备 - Google Patents

电子设备 Download PDF

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Publication number
WO2017215139A1
WO2017215139A1 PCT/CN2016/099241 CN2016099241W WO2017215139A1 WO 2017215139 A1 WO2017215139 A1 WO 2017215139A1 CN 2016099241 W CN2016099241 W CN 2016099241W WO 2017215139 A1 WO2017215139 A1 WO 2017215139A1
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WO
WIPO (PCT)
Prior art keywords
data
charging port
video
interface
usb
Prior art date
Application number
PCT/CN2016/099241
Other languages
English (en)
French (fr)
Inventor
张永亮
Original Assignee
中兴通讯股份有限公司
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 中兴通讯股份有限公司 filed Critical 中兴通讯股份有限公司
Priority to US16/309,334 priority Critical patent/US10986318B2/en
Priority to JP2018564308A priority patent/JP6757804B2/ja
Priority to EP16905251.1A priority patent/EP3471404B1/en
Publication of WO2017215139A1 publication Critical patent/WO2017215139A1/zh

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/12—Picture reproducers
    • H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
    • H04N9/3179—Video signal processing therefor
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/44—Methods for charging or discharging
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/007—Regulation of charging or discharging current or voltage
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/74—Projection arrangements for image reproduction, e.g. using eidophor
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/12—Picture reproducers
    • H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/12—Picture reproducers
    • H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
    • H04N9/3141—Constructional details thereof
    • 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
    • G09G2330/021—Power management, e.g. power saving
    • 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
    • G09G2370/20—Details of the management of multiple sources of image data
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
    • H01M2010/4278—Systems for data transfer from batteries, e.g. transfer of battery parameters to a controller, data transferred between battery controller and main controller
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Definitions

  • the present invention relates to the field of electronic technologies, and in particular, to an electronic device.
  • USB-A USB Type A, USB type A
  • USB-C USB Type C, C-type USB
  • USB-C USB Type C, C-type USB
  • the USB-C charging can be connected to a universal charger, the function of charging via the USB-C interface will also exist.
  • USB-C interface is set to access USB data, video data, and audio data, without the special external USB-C to convert video, audio, and other forms of USB port accessories.
  • these data functions still cannot be accessed at the same time.
  • Such external adapters are inconvenient for carrying and forgotten to carry.
  • the electronic device itself needs to simultaneously expand the external physical interface and the internal data channel: external physical interface
  • the expansion is characterized by the addition of USB-C and USB-A ports, and the expansion of the internal data channel is characterized by extended video, audio and USB data channels.
  • an object of embodiments of the present invention is to provide an electronic device to automatically switch The electronic device is charged using a charging interface on the electronic device, and multiple external data interfaces and internal data channels are extended to achieve simultaneous access of multiple data functions.
  • an electronic device in which a battery is disposed, the electronic device includes: a data and charging port, a DC charging port, a data interface, a power switch, a charging management module, and a main processing And a video processing module; the data and charging port are configured to transmit power or transmit video data; the DC charging port is configured to transmit power; the data interface is configured to transmit the video data; The switch detects whether the data and the charging port and the DC charging port transmit electrical energy, and turns on the data and the charging port or the DC charging port and the charging management module according to the detection result, where the charging management module is After the data and the charging port or the DC charging port are turned on, the battery is charged by using the data and the charging port or the DC charging port; the main processor controls the video receiver to detect the Data and charging port, whether the data port transmits video data, and receives one channel of video data according to the detection result, and sends the video data to the video Processing module for processing.
  • the power switch includes a threshold detection circuit, an inverter, a comparator, and a switch tube; the threshold detection circuit detects a potential of the data and a charging port; and the inverter acquires Describe a potential of the data charging port or a potential of the DC charging port and input a corresponding inversion potential; the comparator compares an inversion potential of the data charging port with a potential of the DC charging port, or Comparing the potential of the data charging port with the inversion potential of the DC charging port, the comparison result potential controls the opening or closing of the switch tube; the opening or closing of the switch tube causes the data and the charging port, the A conduction or disconnection between the DC charging port and the charging management module.
  • the data and the charging port and the data port are further configured to transmit interface protocol data; the main processor is configured to process the data, the charging port, and the data port transmission Interface protocol data.
  • the foregoing electronic device further includes: an interface controller, a high speed data switch cross array; the interface controller controls the high speed data switch cross array to charge the data
  • the port performs detection, and transmits the interface protocol data to the main processor when detecting the data and the charging port, and transmits the video data to the main processor when detecting the data and the charging port Said video receiver.
  • the data and the charging port obtain power by configuring a channel signal pin
  • a power line exists between the interface controller and the data and the charging port
  • the interface controller passes the power source
  • the line acquires the power transmitted by the configuration channel signal pin and transmits the power to the charging management module.
  • the foregoing electronic device further includes a first transit chip and a second transit chip; the video receiver is configured to receive a high-definition multimedia interface video; and the video data received by the data and the charging port is a video.
  • the interface video, the first adapter chip converts the video interface video into the high-definition multimedia interface video and sends the video to the video receiver; the video data received by the data interface is a high-definition video and audio standard interface of the mobile terminal.
  • Video, the second adapter chip converts the high-definition video standard interface video of the mobile terminal into the high-definition multimedia interface video, and sends the video to the video receiver.
  • the number of the data interfaces is multiple.
  • the video processing module is an optical projection module.
  • the electronic device of the embodiment of the present invention has at least the following advantages:
  • the electronic device has data and a charging port and a DC charging port, and detects data, a charging port and a DC charging port.
  • the device selects An interface of the incoming electrical energy is electrically connected to the charging management module for the charging management module to obtain the electrical energy and charge the battery; and the electronic device according to the embodiment of the invention detects the data and the data transmitted by the charging port and the data port, so that the data is And whether the charging port is used for charging, as long as one of the two performs video data transmission, the electronic device acquires video data for processing.
  • FIG. 1 is a structural diagram of an electronic device according to an embodiment of the present invention.
  • FIG. 2 is a structural diagram of a power switch in an electronic device according to an embodiment of the present invention.
  • FIG. 3 is a structural diagram of a power switch in an electronic device according to an embodiment of the present invention.
  • FIG. 4 is a schematic diagram showing the operation of an electronic device according to an embodiment of the present invention.
  • FIG. 5 is a schematic diagram of an operation of an electronic device according to an embodiment of the present invention.
  • FIG. 6 is a structural diagram of an electronic device according to an embodiment of the present invention.
  • FIG. 7 is a flowchart of operation of an electronic device according to an embodiment of the present invention.
  • FIG. 8 is a structural diagram of an electronic device according to an embodiment of the present invention.
  • FIG. 9 is a structural diagram of an electronic device according to an embodiment of the present invention.
  • FIG. 10 is a structural diagram of an electronic device according to an embodiment of the present invention.
  • an embodiment of the present invention provides an electronic device in which a battery 110 is placed.
  • the type of the electronic device is not limited, and the power consumption may be large.
  • the projector can be used with a large internal battery (typically 10000mAh or more).
  • the electronic device includes: a data and charging port 120, a DC charging port 130, a data interface 140, a power switch 150, a charging management module 160, a main processor 170, a video receiver 180, and a video processing module 190.
  • the data and charging port 120 is configured to transmit electrical energy or to transmit video data.
  • Data interface 140 is arranged to transmit video data.
  • the data and charging port include but not limited to USB-C interface, which can be connected to USB data cable, DP (Display Port, video port) video cable, audio cable, 20V/5A universal power adapter, DC (DC) charging port.
  • 120 can only access 20V/5A dedicated power adapter, and data interface 140 includes but is not limited to USB-A interface.
  • the power switch 150 detects whether the data and the charging port 120 and the DC charging port 130 transmit power, and turns on the data and the charging port 120 or the DC charging port 130 and the charging management module 160 according to the detection result, and the charging management module 160 is in the data and charging. After the port 120 or the DC charging port 130 is turned on, the battery 110 is charged using the data and the charging port 120 or the DC charging port 130.
  • the power switch 150 switches the single power supply to the charging management module 160 to charge the built-in large-capacity battery.
  • both the USB-C interface and the DC charging port can be charged, and the universal power supply has a 20V/5A with a USB-C terminal (the highest configuration can be slightly reduced according to actual needs, such as 19V/3.5A).
  • the adapter is connected to the USB-C interface, and a dedicated 20V/5A charger with a DC charging port (generally circular or other special shape) is connected to the DC charging port.
  • Single-port access enables single-channel charging. When both are connected, the built-in power switch 150 controls that only a single charging power source can pass to the charging management module 160 to supply power to the system and charge the large-capacity battery.
  • the USB-C interface has a total of 24 pins and supports forward and reverse insertion. Therefore, the signal pins are all in pairs. There are 4 power/grounds. In general, only 5V/0.5A/1A/3A power supply is supported.
  • the built-in USB-C detection & PD controller ie interface controller 610) can achieve a maximum power supply capacity of 100W; two CC (configuration channel) signals are used to configure the master-slave And interface direction; two Tx, two Rx differential pair signals for high-speed data (USB3.0/3.1 protocol data) transmission, a pair of speeds up to 5Gbps, two pairs up to 10Gbps, for transmitting high-speed data (HD video Data and USB3.0/3.1 protocol data); 2 D+, 2 D- for normal speed data (USB2.0 protocol data) transmission; SBU1, SBU2 are reserved pins for external audio.
  • the parallel charging of the USB-C interface and the DC charging port is mainly considering that the USB-C interface has more multiplexing functions, and the charging occupies the user time for a long time, which is inconvenient for the user to use the data function frequently and related.
  • the device can be connected and equipped with a dedicated charging adapter with a DC charging port terminal to separate the charging path.
  • a dedicated charging adapter with a DC charging port terminal to separate the charging path.
  • the user if the user forgets to carry a dedicated charging adapter, it can also use the universal USB with an emergency.
  • the charging adapter of the -C terminal charges the device, and the switching between the two is switched by a power switch that is not controlled by the main processor.
  • the main processor 170 controls the video receiver 180 to detect whether the data and the charging port 120 and the data port 140 transmit video data, and receives one channel of video data according to the detection result, and sends the video data to the video processing module 190 for processing.
  • the video receiver 180 can employ an HDMI (High Definition Multimedia Interface) multiplexer.
  • a USB-A data function channel extended by the USB HUB in addition to the USB-C data function channel is provided.
  • the USB-C interface is being charged, a large number of peripherals of the OTG peripheral and the conventional USB-A cannot directly access the projector, which also causes inconvenience to the user.
  • a USB-C interface is not enough. It is also assumed that the above scene is connected to the USB-A interface U disk for data transmission at the same time, and that one USB-C interface is not enough. In these application scenarios, the USB data path needs to be expanded.
  • the video processing module 190 can employ an optical projection module, and the electronic device of the embodiment becomes a projector.
  • the projection module projects the required signals.
  • DLP Digital Light Processing
  • DMD Digital Micromirror Device
  • TI Texas Instruments, USA
  • Display display technology, that is, using RGB (red, green and blue primary colors) signals.
  • the above video receiver 180 can employ a multi-channel HDMI receiver to convert the HDMI signal of the USC-C interface into an RGB signal. In order to complete this conversion, the multi-channel HDMI receiver requires built-in storage to store HDCP (High-bandwidth Digital Content Protection).
  • HDCP High-bandwidth Digital Content Protection
  • the former ensures that encrypted HD video can be parsed, and the latter contains parameters related to the monitor and its performance.
  • the external device communicates with the projector through the DDC (Display Data Channel) of the HDMI with respect to information such as EDID.
  • DDC Display Data Channel
  • the content of HDMI transmission has the following parts:
  • Transfer CEC Consumer Electronics Control, consumer electronic control allows end users to use a remote control to control multiple CEC-enabled HD devices) data; for MHL, it is necessary to transmit RCP (Remote Control Protocol) data;
  • the HDMI converter converts not only video, but also I2S (Inter-IC Sound, integrated circuit built-in audio bus) audio signal, which is sent to the audio plus code decoder and output to the speaker. Therefore, the HDMI video signal is accurately an audio and video signal, but for the sake of simplification, the description of the present invention adopts the HDMI video signal designation unless otherwise specified.
  • the main processor 170 controls the multi-channel HDMI receiver to switch the multi-channel HDMI source to a single input through a serial port command.
  • USB-C port can directly access the audio signal based on the prior art (the USB-A port has no such capability due to the limitation of the signal line), and the microphone and the ground signal are connected through the SBU1/SBU2 (the American standard and the national standard two) Although the signal definition is just the opposite, the system can also be automatically recognized.)
  • D+/D- corresponds to the left and right channel signals, cc1/cc2 docking earphone identification signal and power supply (when there is a chip in the cable, a cc Transmitting the signal, a cc becomes the power supply Vconn) to realize all the audio signals of the external 3.5mm earphone, especially by directly taking the digital audio signal to the earphone to give the user a more fidelity and clearer listening experience.
  • USB-C interface audio signal interacts with audio plus code decoder controlled by main processor 170 to enable external audio peripherals to work, enabling audio data between USB-C interface and other audio devices
  • the power switch 150 includes a threshold detection circuit 151, an inverter 152, a comparator 153, and a switch 154.
  • the threshold detecting circuit 151 detects the data and the potential of the charging port 120.
  • the inverter 152 acquires the potential of the data charging port 120 or the potential of the DC charging port 130 and inputs the corresponding inverting potential.
  • the comparator 153 compares the inversion potential of the data charging port 120 with the potential of the DC charging port 130 (as shown in FIG. 2), or compares the potential of the data charging port 120 with the inversion potential of the DC charging port 130 (eg, As shown in FIG. 3, the comparison result potential controls the opening or closing of the switch tube 154.
  • the opening or closing of the switch tube 154 causes the data and the charging port 120, the DC charging port 130 and the charging management module 160 to be turned on or off.
  • the switch tube 154 can select the NMOS switch tube or the PMOS tube, and only needs to convert the comparator 153 from the AND gate to the OR gate accordingly.
  • FIG. 2 two working modes are included: as shown in FIG. 2, one is to control the embedded power in the DC charging port and the charging management module by detecting the power potential of the USB-C interface (data and charging port).
  • the power MOS (field effect transistor) tube power switch between 160 is realized; as shown in FIG. 3, the other is to control the embedded power in the USB-C interface and the charging management module 160 by detecting the power potential of the DC charging port.
  • the power MOS (field effect transistor) tube power switch is implemented. The following is an example of FIG. 2:
  • the threshold detecting circuit 151 detects the effective potential of the voltage of the USB-C interface, and then divides the voltage by the matching resistor 155 and the matching resistor 156 to provide an inverter 152 (also referred to as an inverting comparator). The appropriate potential is debounced by the inverter 152 to obtain a stable inverting potential, which is divided by the matching resistor 157 and the matching resistor 158 from the DC charging port. After the potential of the circuit voltage is compared with the gate (comparator), the effective control level of the MOS switch tube is obtained by the level shift circuit 159 (usually through a triode), thereby realizing the DC charging port and the charging management module. The MOS switch tube is turned on or off. Compared with FIG. 2, FIG.
  • USB-C terminal plus threshold voltage detection is because the USB-C voltage is delayed, because USB-C will reach 20V after PD (Power Delivery) protocol communication. In general, this threshold voltage setting Set to be higher than 18V.
  • the power supply for the threshold detection circuit, the inverter, the AND gate, and the level shift circuit is derived from the power supply of the power management module.
  • FIG. 2 and FIG. 3 the charging of the USB-C interface or the DC charging port respectively has a higher priority, wherein the working process of the priority mechanism of FIG. 2 is as shown in FIG. 4, and the working process of the priority mechanism of FIG. As shown in FIG. 5, FIG. 4 and FIG. 5 only show the difference in directivity, and FIG. 4 is an example for explanation:
  • the USB-C interface and the DC charging port detect a high level at the same time, or the DC charging port detects a high level after detecting the high level USB-C interface, once the PD of the USB-C interface is established (the output is higher than 18V) Voltage), the inverter output is low, and the power MOS transistor is turned off via the AND gate (lower potential of the USB-C interface after the reverse phase and the high potential of the DC charging port and the output low potential), and the power is switched from the DC charging port to the USB- C interface power supply.
  • USB-C interface is high and the DC charging port has no power. Once the PD of the USB-C interface is established, the inverter output is low, and the AND gate (inverted USB-C interface low potential and DC charging port) The low potential phase and the output low potential turn off the power MOS nozzle and are powered by the USB-C interface.
  • the USB-C interface has no power and the DC charging port has power.
  • the inverter output is high.
  • the power is turned on via the AND gate (the high-potential phase of the inverted USB-C interface and the high potential of the DC charging port).
  • MOS tube powered by DC charging port.
  • USB-C interface and the DC charging port are detected to be dead, and the AND gate (the reversed USB-C high potential and the DC charging port are low potential). After the output is low, the power MOSFET is turned off and the system has no external power supply.
  • the power switching mechanism of the DC charging port charging priority of FIG. 5 is similar to that of FIG. 4, and only the DC charging port detection does not need to establish a PD protocol process, and no threshold detection is required.
  • the switching circuit working mechanism of the USB-C interface and the DC charging port is completed by a pure hardware circuit, and the internal software (the power voltage detecting circuit is sent to the general input and output port of the system main processor) after the system startup is not required to perform logic. Judging, it can be faster and save power than the software switching mechanism.
  • an embodiment of the present invention provides an electronic device, wherein the data and charging port 120 and the data port 140 are further configured to transmit interface protocol data; the main processor 170 is configured to process data and a charging port. 120.
  • the electronic device of the embodiment further includes: an interface controller 610, a high-speed data switch cross array 620, a first transit chip 630, and a second transit chip 640.
  • the interface controller 610 controls the high speed data switch cross array 620 to detect the data and the charging port 120.
  • the charging port 120 transmits the interface protocol data, it is transmitted to the main processor 170, and the data and the charging port 120 are detected.
  • the video data is transmitted to the video receiver 180 when it is transmitted.
  • the video receiver 180 is configured to receive the high-definition multimedia interface video; the video data received by the data and the charging port 110 is a video interface video, and the first transit chip 630 converts the video interface video into a high-definition multimedia interface video and sends the video to the video.
  • the receiver 180 receives the video data of the high-definition video and audio interface video of the mobile terminal, and the second adapter chip 640 converts the high-definition video interface video of the mobile terminal into high-definition multimedia interface video and sends the video to the video receiver 180.
  • the Tx and Rx of the USB-C interface are used for accessing the high-speed data signal, and the high-speed data signal is used.
  • the number can be either USB3.0/3.1 protocol data or DP (Displayport, literally video interface, actual audio and video can be transmitted) video data, controlled by USB-C detection & PD controller (ie interface controller)
  • the high speed data crossbar array 620 achieves separation of the two types of data. After separation, the USB3.0/3.1 protocol data can be directly sent to the main processor (shown by the dotted line in Figure 6).
  • USB-C detection & PD controller USB2.0 data (not shown in the figure) together with the built-in HUB (hub 650) extended compatible USB-A device access, enabling USB-C and USB-A multi-channel USB channels to access communication;
  • the DP video signal further reaches the HDMI multi-channel receiver via the DP switching HDMI chip (the first switching chip), and the main processor controls the HDMI multi-channel receiver to receive the HDMI information delivery optical module (for the projector,
  • the optical machine module is a video processing module to realize projection playback.
  • the DP video data and the USB protocol data can be simultaneously transmitted via the USB-C detection & PD controller (ie, the interface controller) configuring the high speed data crossbar array.
  • a USB HUB capable of simultaneously transmitting high-speed data and constant-speed data is placed between the multi-channel USB port and the main processor, and the USB-C interface is separated by the high-speed data crossbar array.
  • 3.1 Protocol data, USB-C USB2.0 data transmitted by USB-C detection & PD controller and USB2.0 or USB3.0/3.1 data of other multi-channel USB-A interface are simultaneously connected to the main processor.
  • Figure 6 shows two USB-A interfaces, which can meet the actual needs.
  • USB Hub can usually expand one USB interface to four
  • MHL Mobile High-Definition Link
  • MHL-to-HDMI chips ie, second adapter chips.
  • Road HDMI receiver For an electronic device such as a projector, the main processor controls a multi-channel HDMI receiver to select one channel of DP to HDMI and two channels of MHL to HDMI for three channels of video sources, one of which is sent to the optical module for projection, and is essentially a multi-video source.
  • the basic process of the switching process is shown in Figure 7:
  • the first step is to detect the supply voltage signal of the multiple HDMI sources
  • the second step is to determine whether the single-channel video source is valid. If yes, go to the fifth step; if not, turn down step;
  • the third step is to determine whether two or more channels (including two channels) of the multi-channel video source are valid at the same time. Yes, go to the next step; no, go to the first step to re-test;
  • the video source priority is determined according to the default or the priority set by the user, and the highest priority video source is selected as the effective video source;
  • the DDC, the power supply voltage, and the HPD (Hot Plug Detection) channel of the HDMI converter are cut to an effective single-channel video source or a video source with the highest priority among the multiple channels;
  • the video source transmits the EDID to the HDMI converter via the DDC, and confirms that the source side displays the performance parameter; at the same time, the HPD is returned to the source, and the source is prepared to perform video playback;
  • the video arrives at the HDMI converter to load HDCP, converts the projected video format, and performs projection playback.
  • CEC does not need to be switched, because multiple HDMI CECs are connected in common.
  • MHL video playback switching is different from HDMI. Instead of returning the HPD signal to the video source, it is redefined by CBUS (MHL on the number of the letter equivalent to the USB ID, all HDMI control signals such as DDC, HPD, CEC, etc. Take this road) return.
  • CBUS MHL on the number of the letter equivalent to the USB ID, all HDMI control signals such as DDC, HPD, CEC, etc. Take this road
  • multiple channels of video, audio, and USB data can be simultaneously accessed through a plurality of different external USB interfaces and expansion of internal video, audio, and USB data channels.
  • multi-channel MHL and DP-to-HDMI video sources based on different forms of USB interface are converted into optical projections.
  • the data and charging port 120 acquires power by configuring a channel signal (CC) pin, a power line exists between the interface controller 610 and the data and the charging port 120, and the interface controller 610 acquires a configuration channel signal through the power line.
  • the power transmitted by the foot is transmitted to the charge management module 160.
  • the power supply from the USB-C interface needs to pass through the built-in USB-C and PD controllers to reach the charging tube. Management module. If there is no built-in USB-C detection & PD controller, the USB-C interface can only provide 5V/0.5A/1A/3A power supply, which cannot meet the power consumption requirements of large-capacity internal battery projectors.
  • the built-in USB-C detection & PD controller can achieve a maximum power supply of 100W and can support fast charging; the PD transmits via CC signal.
  • the power MOS transistor can be embedded between the USB-C interface and the USB-C detection & PD controller.
  • the power cable between the USB-C detection & PD controller and the USB-C interface is bidirectional, and the controller also enables the USB-C to have an OTG (on the go), which is free from the limitations of the original master-slave architecture. End-to-end data transfer between devices, receiving mouse, keyboard and mobile hard disk information.
  • the present invention solves USB-C multi-function multiplexing and provides a dedicated DC charging port and USB-C charging switching in the case of large power consumption of an electronic device such as a projector product.
  • the electronic device of the embodiment of the invention provides the functions of charging both the USB-C interface and the DC charging port, and ensures that the multiplexing of the DP video data, the audio line, the USB data and the 20V/5A power supply of the USB-C interface are not interfered with each other. It is compatible with USB data and MHL video data extension for USB-A interface.
  • the USB-C interface can be connected to the USB data cable, DP video cable, audio cable, 20V/5A universal power adapter, and the DC charging port can only be connected to the 20V/5A dedicated power adapter.
  • the power switch switches the single power supply to the charging management chip to charge the built-in large-capacity battery (typically 10000mAh or more).
  • the USB data signal of the USB-C interface and the DP video data signal go the same path to the high-speed data crossbar switch array, and the power signal goes through another path through the USB-C detection & PD controller and then to the charge management chip.
  • the USB-C detection & PD controller has a control signal to control the high-speed data crossbar array to separate the USB data and the DP video data.
  • the DP video data is converted to the optical machine by the DP to HDMI chip to the multi-channel HDMI receiver controlled by the main processor.
  • the module's video mode projection; USB data has high-speed and low-speed data, its data can be directly connected to the main processor, but usually the main processing receiving USB port is limited, in the case of compatibility with existing USB-A interface peripherals, add USB HUB (hub) extended two USB-A interface implementations Multiple USB ports and multiple USB data are simultaneously connected to the system main processor (close to the main processor side is a single USB data channel).
  • USB-A interfaces can simultaneously transmit MHL video signals, and respectively reach the multi-channel HDMI receiver via two MHL-to-HDMI chips.
  • the main processor controls multiple channels of HDMI receivers to one-way DP to HDMI and two-way MHL to HDMI through software.
  • a total of three video sources select one of them to be sent to the optomechanical module for projection.
  • the electronic device corresponding to the embodiment of FIG. 6 is configured by using a USB-C interface for high-speed data transmission and high-current charging in an electronic device with a built-in large-capacity battery.
  • USB-C port can charge and data service switch and replace each other, supply system power and video processing module for providing electronic equipment (such as projector's optical projector module) Video source
  • 20V/5A power supply can be connected to the power switch control for single-channel power supply;
  • USB protocol data is compatible with the USB protocol data of the multi-channel USB-A port through the USB Hub, and realizes various peripherals of the USB3.0 and USB2.0 protocols. Simultaneous access;
  • USB-C DP video signal and USB-A port MHL video signal switching are controlled by the system for single-channel use.
  • USB-C can be used by audio, especially commonly used external headphones.
  • Other conventional video and USB data functions can be performed through other USB ports.
  • the present invention can be further extended based on the above-described typical projector power supply and data interface switching basic architecture having one USB-C port and two USB-A ports. This extension makes more sense when USB-C has the ability to transmit audio and USB-A does not.
  • Multi-channel high-speed broadband switches require the same built-in storage capabilities as multiple HDMI receivers to store HDID and external HDMI transmitted EDID to ensure that encrypted HD video can parse and retrieve parameters containing the monitor and its performance.
  • the multi-selective processing flow of the multi-channel high-speed broadband switch and the video source switching process of the multi-channel HDMI receiver herein can be processed according to the flow of FIG.
  • the present invention provides a power and data interface switching embodiment of two USB-C ports and four USB-A ports.
  • This embodiment is generally equivalent to two sets of diagrams and a basic architecture overlay, except that the processor, the audio plus decoder, the multi-channel HDMI converter and the optical module are shared with the charging module, the large-capacity battery, the power switch circuit, and the DC charging port. .
  • HDMI video source converted from USB-C 2-port DP and HDMI video source converted by USB-A3 port and USB-A4 port MHL are sent to multi-channel high-speed broadband switch 2 for three-choice video.
  • the HDMI video source converted from the parallel USB-C 1 port DP and the HDMI video source converted by the USB-A1 port and the USB-A2 port MHL respectively are sent to the three-way high-speed broadband switch 1
  • the video is connected to the multi-channel HDMI receiver controlled by the main processing, and the latter converts the single-channel video source into a video format received by the optical module for projection playback.
  • the power potential information carrying the USB-C 2 port is sent to the OR gate together with the power potential information of the USB-C1 port (this OR gate is only to indicate that the logic relationship is placed in the front stage of the power switch control circuit, and the actual ideal position is As shown in FIG. 10, at the back end of the voltage dividing circuit of the DC charging port, that is, after the two USB-C charging ports are respectively subjected to the threshold detecting and voltage dividing circuit, they are sent to the common OR gate, and the common phase is inverted by logic or logic.
  • USB-C port can turn off the power of the DC charging port when there is an external 20V/5A adapter
  • the source switch realizes charging by USB-C port (when both USB-C ports are connected, it is equivalent to parallel input, each port only provides half of the total charging current).
  • OR gate does not enable reverse turn-off control of the charging of the two USB-Cs by the DC charging port.
  • Reverse shut-off does not require an OR gate. It is only necessary to control the G pole of the NMOS power switch tube hanging on the two USB-C ports simultaneously on the right side of the potential shifting circuit of Figure 3.
  • USB-C 2 port associated USB-C detection & PD controller 5 docking USB-C 2 port associated USB-C detection & PD controller to charge management module to provide power to the system.
  • the foregoing technical solution provided by the embodiment of the present invention has a data and a charging port and a DC charging port, and detects the data, the charging port and the DC charging port, and selects when at least one of the data and the charging port and the DC charging port transmits the power,
  • An interface for accessing the electrical energy is electrically connected to the charging management module for the charging management module to obtain the electrical energy and charge the battery; and the electronic device according to the embodiment of the invention detects the data and the data transmitted by the charging port and the data port, so that Whether the data and the charging port are used for charging, as long as one of the two performs video data transmission, the electronic device acquires the video data for processing.

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Abstract

一种电子设备，包括：数据及充电口(120)、直流充电口(130)、数据接口(140)、电源开关(150)、充电管理模块(160)、主处理器(170)、视频接收器(180)、视频处理模块(190)；电源开关(150)检测数据及充电口(120)、直流充电口(130)是否传输电能，并根据检测结果将数据及充电口(120)或直流充电口(130)与充电管理模块(160)导通，充电管理模块(160)在与数据及充电口(120)或直流充电口(130)导通后，使用数据及充电口(120)或直流充电口(130)为电池(110)充电；主处理器(170)控制视频接收器(180)检测数据及充电口(120)、数据接口(140)是否传输视频数据，并根据检测结果接收一路视频数据，并发送给视频处理模块(190)以进行处理。电子设备的数据及充电口(120)与直流充电口(130)相配合，实现电子设备的充电功能，数据及充电口(120)与数据接口(140)相配合，实现电子设备的视频处理功能。

Description

电子设备 技术领域
本发明涉及电子技术领域，尤其涉及一种电子设备。
背景技术
带内置电池的电子设备通常由于功耗较大，设备上会专门配置一个直流(DC)充电口用于充电，该充电口不和电子设备上的数据口复用。例如，某投影仪上设置有一DC充电口以及一个USB-A(USB Type A，A类型USB)接口作为数据接口，常规情况下该USB-A接口的充电能力不足以支持大电流对投影仪的大容量电池充电。
随着USB-C(USB Type C，C类型USB)接口的推广，其可以充电和高速数据功能同时复用，对于低功耗小容量内置电池的电子设备来说基本能满足需求。对于大容量内置电池且具有USB-C接口的电子设备，例如投影仪来说，由于较长的充电时间会影响到用户对USB-C接口的数据功能使用，所以仍然需要保留单独的DC充电口；并且由于USB-C充电可以连接通用的充电器，则通过USB-C接口充电的功能也会同时存在。
同时，即便通过DC充电口替换USB-C口充电，USB-C接口设置为接入USB数据、视频数据、音频数据时，不借助专用外部USB-C转视频、音频、其他形态USB口的配件情况下，这些数据功能仍然无法同时接入。这种外部的转接配件对于用户来说存在携带不便和遗忘携带的情况，为了解决这些数据功能的同时接入，电子设备自身需要对外部物理接口和内部数据通道同时进行扩展：外部物理接口的扩展表现为增加USB-C口和USB-A口，内部数据通道的扩展表现为扩展视频、音频和USB数据通道。
发明内容
有鉴于此，本发明实施例的目的在于提供一种电子设备,以自动切换 使用电子设备上充电接口对电子设备进行充电，并扩展多个外部数据接口和内部数据通道实现多种数据功能的同时接入。
本发明实施例解决上述技术问题所采用的技术方案如下：
根据本发明的一个实施例，提供一种电子设备，所述电子设备中置入电池，所述电子设备包括：数据及充电口、直流充电口、数据接口、电源开关、充电管理模块、主处理器、视频接收器、视频处理模块；所述数据及充电口设置为传输电能或传输视频数据；所述直流充电口设置为传输电能；所述数据接口设置为传输所述视频数据；所述电源开关检测所述数据及充电口、所述直流充电口是否传输电能，并根据检测结果将所述数据及充电口或所述直流充电口与所述充电管理模块导通，所述充电管理模块在与所述数据及充电口或所述直流充电口导通后，使用所述数据及充电口或所述直流充电口为所述电池充电；所述主处理器控制所述视频接收器检测所述数据及充电口、所述数据口是否传输视频数据，并根据检测结果接收一路视频数据，并发送给所述视频处理模块以进行处理。
可选地，前述的电子设备，所述电源开关包括门限检测电路、反相器、比较器、开关管；所述门限检测电路检测所述数据及充电口的电位；所述反相器获取所述数据充电口的电位或所述直流充电口的电位并输入对应的反相电位；所述比较器将所述数据充电口的反相电位与所述直流充电口的电位进行比较，或将所述数据充电口的电位与所述直流充电口的反相电位进行比较，比较结果电位控制所述开关管的打开或闭合；所述开关管的打开或闭合造成所述数据及充电口、所述直流充电口与所述充电管理模块之间的导通或断开。
可选地，前述的电子设备，所述数据及充电口、所述数据口还设置为传输接口协议数据；所述主处理器设置为处理所述数据及充电口、所述数据口传输的所述接口协议数据。
可选地，前述的电子设备，还包括：接口控制器、高速数据开关交叉阵列；所述接口控制器控制所述高速数据开关交叉阵列对所述数据及充电 口进行检测，在检测到所述数据及充电口传输所述接口协议数据时将其传输至所述主处理器，在检测到所述数据及充电口传输所述视频数据时将其传输至所述视频接收器。
可选地，前述的电子设备，所述数据及充电口通过配置通道信号脚获取电能，所述接口控制器与所述数据及充电口之间存在电源线，所述接口控制器通过所述电源线获取所述配置通道信号脚传输的电能并传输给所述充电管理模块。
可选地，前述的电子设备，还包括第一转接芯片、第二转接芯片；所述视频接收器设置为接收高清晰度多媒体接口视频；所述数据及充电口接收的视频数据为视频接口视频，所述第一转接芯片将所述视频接口视频转换为所述高清晰度多媒体接口视频后发送给所述视频接收器；所述数据接口接收的视频数据为移动终端高清影音标准接口视频，所述第二转接芯片将所述移动终端高清影音标准接口视频转换为所述高清晰度多媒体接口视频后发送给所述视频接收器。
可选地，前述的电子设备，所述数据接口数量为多个。
可选地，前述的电子设备，所述视频处理模块为光学投影模块。
根据以上技术方案，可知本发明实施例的电子设备至少具有以下优点：
根据本发明实施例的电子设备，同时具有数据及充电口和直流充电口，对数据及充电口和直流充电口检测，当数据及充电口和直流充电口中至少之一传输电能时，则选择接入电能的一个接口将其与充电管理模块导通，以供充电管理模块获取电能并为电池充电；根据本发明实施例的电子设备，检测数据及充电口、数据口传输的数据，使得不论数据及充电口是否用于充电，只要二者之一进行视频数据传输，电子设备即获取视频数据进行处理。
附图说明
图1为本发明实施例的电子设备的结构图；
图2为本发明实施例的电子设备中电源开关的结构图；
图3为本发明实施例的电子设备中电源开关的结构图；
图4为本发明实施例的电子设备的工作原理图；
图5为本发明实施例的电子设备的工作原理图；
图6为本发明实施例的电子设备的结构图；
图7为本发明实施例的电子设备的工作流程图；
图8为本发明实施例的电子设备的结构图；
图9为本发明实施例的电子设备的结构图；
图10为本发明实施例的电子设备的结构图。
本发明目的的实现、功能特点及优点将结合实施例，参照附图做进一步说明。
具体实施方式
为了使本发明所要解决的技术问题、技术方案及有益效果更加清楚、明白，以下结合附图和实施例，对本发明进行进一步详细说明。应当理解，此处所描述的具体实施例仅仅用以解释本发明，并不用于限定本发明。
如图1所示，本发明的一个实施例提供了一种电子设备，电子设备中置入电池110，在本实施例中，对电子设备的类型不进行限制，其可以是耗电较大的投影仪，而电池则可以采用大容量内置电池(典型值10000mAh以上)。电子设备包括：数据及充电口120、直流充电口130、数据接口140、电源开关150、充电管理模块160、主处理器170、视频接收器180、视频处理模块190。
数据及充电口120设置为传输电能或传输视频数据。直流充电口130 设置为传输电能。数据接口140设置为传输视频数据。其中，数据及充电口包括但不限于USB-C接口，其可以接入USB数据线、DP(Display Port，视频端口)视频线、音频线、20V/5A通用电源适配器，直流(DC)充电口120仅能接入20V/5A专用电源适配器，数据接口140包括但不限于USB-A接口。
电源开关150检测数据及充电口120、直流充电口130是否传输电能，并根据检测结果将数据及充电口120或直流充电口130与充电管理模块160导通，充电管理模块160在与数据及充电口120或直流充电口130导通后，使用数据及充电口120或直流充电口130为电池110充电。
在本实施例中，数据及充电口120、直流充电口130同时接入电源适配器时，由电源开关150进行切换单路电源到充电管理模块160对内置大容量电池充电。在本实施例中，对于USB-C接口和DC充电口均能充电，通过通用的具有USB-C端子的20V/5A(最高配置，可以根据实际需求稍作降配如19V/3.5A)电源适配器接入USB-C接口，专用的具有DC充电口(一般为圆形或其他特制形状)端子的20V/5A充电器接入DC充电口实现。单口接入则实现单通路充电，两者均接入时通过内置电源开关150控制只有单路充电电源可以通行到充电管理模块160对系统供电以及对大容量电池进行充电。
USB-C接口一共有24个引脚，支持正反插，故信号脚都是成对出现，其中电源/地各有4个,一般情况下仅支持5V/0.5A/1A/3A电源，无法满足大容量内置电池电子设备的功耗需求，内置USB-C检测&PD控制器(即接口控制器610)才可以实现最大100W的供电能力；两个CC(配置通道)信号，用来配置主从和接口方向；两个Tx、两个Rx差分对信号用于高速数据(USB3.0/3.1协议数据)传输，一对速度达5Gbps，两对就可达10Gbps，用于传输高速数据(高清视频数据和USB3.0/3.1协议数据)；2个D+、2个D-用于普通速度数据(USB2.0协议数据)传输；SBU1、SBU2为保留引脚，可用于外接音频。
根据本实施例的技术方案，提供USB-C接口和DC充电口并行充电主要是考虑USB-C接口复用功能较多，充电占用用户时间会比较久不便于用户经常性的数据功能使用和相关设备接入，配备专用的具有DC充电口端子的充电适配器后就可以把充电路径分离出来；另一方面，用户在遗忘携带专用充电适配器的情况下，也可以紧急情况下用通用的带有USB-C端子的充电适配器对设备进行充电，这两者之间的切换通过不经主处理器控制的电源开关切换。
主处理器170控制视频接收器180检测数据及充电口120、数据口140是否传输视频数据，并根据检测结果接收一路视频数据，并发送给视频处理模块190以进行处理。在本实施例中，视频接收器180可以采用HDMI(High Definition Multimedia Interface，高清晰度多媒体接口)多路接收器。
在本实施例中，USB-C接口和DC充电口充电切换之外，同时提供USB-C数据功能通道之外经USB HUB扩展的USB-A数据功能通道。USB-C接口进行充电时，OTG外设、传统USB-A的大量外设无法直接接入投影仪整机，同样会给用户带来不便。比如，用户一边用USB-C接口的DP功能外接音视频源进行影音、游戏、视频会议(通过USB摄像头)等，一边想接USB鼠标或键盘操控，一个USB-C接口就不够用了。更有假定上述场景同时再外接USB-A接口U盘进行资料传输，那一个USB-C接口就更不够用了。这些应用场景下，USB数据路径就需要拓展。
在本实施例中，视频处理模块190可以采用光学投影模块，本实施例的电子设备成为投影仪。投影模块投影所需信号，在微型投影仪领域，主要采用DLP(Digital Light Processing，数字光学处理，通过基于TI(美国德州仪器)公司开发的DMD(Digital Micromirror Device，数字微镜元件)完成数字视频显示)显示技术，即采用RGB(红绿蓝三原色)信号。上述的视频接收器180可以采用多路HDMI接收器需把USC-C接口的HDMI信号转换为RGB信号。为完成这种转换，多路HDMI接收器需内置存储功能以存储HDCP(High-bandwidth Digital Content Protection，高频宽 数位内容保护)和外部HDMI传输而来的EDID(Extended Display Identification Data，扩展显示标识数据)：前者确保加密高清视频能解析，后者包含有关监视器及其性能的参数。外接设备通过HDMI的DDC(Display Data Channel，视频数据通道)与投影仪就EDID等相关信息进行通信。
HDMI传输的内容有以下几个部分：
1)传输视频数据；
2)传输音频数据；
3)传输EDID信息；
4)传输CEC(Consumer Electronics Control，消费类电子控制允许终端用户使用一个遥控器控制多个支持CEC的HD设备)数据；对于MHL来说需要传输RCP(Remote Control Protocol，遥控协议)数据；
5)传输时钟信息。
因HDMI同时携带音频信息，故HDMI转换器转换出来的不单单是视频，还有I2S(Inter-IC Sound，集成电路内置音频总线)音频信号，送达音频加码解码器后输出给扬声器。故HDMI视频信号准确说是音视频信号，但为简单化，除特别说明外，本发明描述均采用HDMI视频信号称谓。在本实施例中，主处理器170通过串口命令控制多路HDMI接收器实现多路HDMI源切换为单路输入。
进一步地，USB-C口基于现有技术同时还可以直接接入音频信号(USB-A口因信号线受限没有此项能力)，通过SBU1/SBU2对接麦克风和地信号(美标和国标两个信号定义虽正好相反，但系统也因此正好可以自动识别)、D+/D-对应分别走左右声道信号、cc1/cc2对接耳机识别信号和电源(当线缆里有芯片的时候，一个cc传输信号，一个cc变成供电Vconn)实现外接3.5mm耳机全部音频信号，特别是可以通过直接走数字音频信号到耳机给用户带来更保真更清晰的听觉感受。基于这种现有技术，还可以 扩展其他的音频外设接入：USB-C接口音频信号和主处理器170控制的音频加码解码器交互，实现外部音频外设能够工作，使得USB-C接口与其他音频设备之间进行音频数据的传输。
如图2和图3所示，本发明的一个实施例中提供了一种电子设备，电源开关150包括门限检测电路151、反相器152、比较器153、开关管154。
门限检测电路151检测数据及充电口120的电位。
反相器152获取数据充电口120的电位或直流充电口130的电位并输入对应的反相电位。
比较器153将数据充电口120的反相电位与直流充电口130的电位进行比较(如图2所示)，或将数据充电口120的电位与直流充电口130的反相电位进行比较(如图3所示)，比较结果电位控制开关管154的打开或闭合。
开关管154的打开或闭合造成数据及充电口120、直流充电口130与充电管理模块160之间的导通或断开。在本实施例中，开关管154可以选择NMOS开关管，也可以选择PMOS管，只需相应地将比较器153由与门变换为或门。
在本实施例中，包含了两种工作方式：如图2所示，一种是通过对USB-C接口(数据及充电口)的电源电位检测，去控制嵌入在DC充电口和充电管理模块160之间的功率MOS(场效应管)管电源开关实现；如图3所示，另一种是通过对DC充电口的电源电位检测，去控制嵌入在USB-C接口和充电管理模块160之间的功率MOS(场效应管)管电源开关实现，以下以图2为例进行说明：
门限检测电路151对USB-C接口的电压进行检测到有效电位，然后通过匹配电阻155和匹配电阻156分压电路分压，提供给反相器152(也可以理解为反相比较器)工作的合适电位，经反相器152去抖动得到稳定的反相电位，与来自于DC充电口的通过匹配电阻157和匹配电阻158分压 电路分压得来的电位进行与门(比较器)比较后，再通过电平移位电路159(通常通过三极管)得到MOS开关管的有效控制电平，从而实现对处于DC充电口和充电管理模块之间的MOS开关管的开启或关闭。而图3和图2相比，主要是通过从DC充电口的Vin+(正电压)正极检测去控制处于USB-C接口和充电管理模块140之间的MOS开关管的开启或关闭。DC充电口因电压固定不需要门限检测。USB-C端加门限电压的检测是因为USB-C的电压是延迟出现的，因为USB-C是在PD(Power Delivery，供电)协议通信后才会达到20V，一般情况下，这个门限电压设定为高于18V。门限检测电路、反相器、与门和电平移位电路的供电来源于电源管理模块的供电。
在图2和图3中，分别为USB-C接口或DC充电口充电具有更高优先级，其中图2的优先级机制下工作过程如图4所示，图2的优先级机制下工作过程如图5所示，图4和图5仅存方向性的差异，以下图4为例进行说明：
在USB-C接口充电更具优先级情况下，分为四种情形：
1、USB-C接口和DC充电口同时检测到高电平，或DC充电口先检测到高电平USB-C接口后检测到高电平时，一旦USB-C接口的PD建立(输出高于18V电压)，反相器输出为低，经与门(反相后的USB-C接口低电位和DC充电口高电位相与输出低电位)关闭功率MOS管，由DC充电口供电切换为USB-C接口供电。
2、USB-C接口高电平且DC充电口无电，一旦USB-C接口的PD建立，反相器输出为低，经与门(反相后的USB-C接口低电位和DC充电口低电位相与输出低电位)关闭功率MOS管口，由USB-C接口供电。
3、USB-C接口无电且DC充电口有电，反相器输出为高，经与门(反相后的USB-C接口高电位和DC充电口高电位相与输出高电位)打开功率MOS管，由DC充电口供电。
4、内部电源(内置电池供电)存在情况下，检测USB-C接口和DC充电口均无电，经与门(反相后的USB-C高电位和DC充电口低电位相与 输出低电位)后功率MOS管关闭，系统无外部供电。
还有一种特殊情况，即内置电池无电，USB-C接口和DC充电口也均无电时，整机不工作，也就没有电压检测的情况出现。图5的DC充电口充电优先情况下的电源切换机制与图4类似，仅DC充电口的检测不需建立PD协议过程，不需门限检测。
在本实施例中，USB-C接口和DC充电口的切换电路工作机制由纯硬件电路完成，不需要系统启动后内部软件(电源电压检测电路送系统主处理器的通用输入输出口)进行逻辑判断，可以较软件切换机制更快捷与节省功耗。
如图6所示，本发明的一个实施例中提供给了一种电子设备，其中数据及充电口120、数据口140还设置为传输接口协议数据；主处理器170设置为处理数据及充电口120、数据口140传输的接口协议数据，具体地，本实施例的电子设备还包括：接口控制器610、高速数据开关交叉阵列620、第一转接芯片630、第二转接芯片640。
接口控制器610控制高速数据开关交叉阵列620对数据及充电口120进行检测，在检测到数据及充电口120传输接口协议数据时将其传输至主处理器170，在检测到数据及充电口120传输视频数据时将其传输至视频接收器180。
视频接收器180设置为接收高清晰度多媒体接口视频；数据及充电口110接收的视频数据为视频接口视频，第一转接芯片630将视频接口视频转换为高清晰度多媒体接口视频后发送给视频接收器180；数据接口140接收的视频数据为移动终端高清影音标准接口视频，第二转接芯片640将移动终端高清影音标准接口视频转换为高清晰度多媒体接口视频后发送给视频接收器180。
在本实施例中，在本实施例的技术方案中，当数据及充电口采用USB-C接口时，USB-C接口的Tx、Rx用于高速数据信号的接入，这种高速数据信 号既可以是USB3.0/3.1协议数据也可以是DP(Displayport，字面是视频接口，实际音视频均能传输)视频数据，由通过USB-C检测&PD控制器(即接口控制器)控制的高速数据交叉开关阵列620实现这两种数据的分离。分离后，USB3.0/3.1协议数据可以直接到主处理器(图6中虚线表示)，结合后续实施例，也可以和USB-C接口的D+、D-经由USB-C检测&PD控制器过来的USB2.0数据(未在图中示出)一起经由内置HUB(集线器650)扩展兼容USB-A设备接入，实现USB-C和USB-A多路USB通道都能接入通信；另一方面，DP视频信号进一步经由DP转接HDMI芯片(第一转接芯片)到达HDMI多路接收器，主处理器控制HDMI多路接收器接收此路HDMI信息送达光机模块(对于投影仪，光机模块即视频处理模块)，实现投影播放。
在本实施例中，DP视频数据、USB协议数据可以经由USB-C检测&PD控制器(即接口控制器)配置高速数据交叉开关阵列实现同时传输。在本实施例中，将能同时传输高速数据和常速数据的USB HUB置于多路USB口和主处理器之间，把USB-C接口经高速数据交叉开关阵列分出来的USB3.0/3.1协议数据、USB-C经USB-C检测&PD控制器传递的USB2.0协议数据和其他的多路USB-A接口的USB2.0或USB3.0/3.1数据同时接入到主处理器。图6示出两路USB-A接口，已经能够满足实际需求，当然还可以配置更多路(USB Hub通常可以把一个USB接口扩展为为4个)，但过多配置的口同时使用会使得USB设备变慢，所以本实施例优选通过USB HUB扩展2个USB-A接口。扩展的2个USB-A接口可以同时复用于传输MHL(Mobile High-Definition Link，移动终端高清影音标准接口)视频信号，分别经两个MHL转HDMI芯片(即第二转接芯片)到达多路HDMI接收器。对于例如投影仪的电子设备，其主处理器控制多路HDMI接收器对一路DP转HDMI和两路MHL转HDMI共计三路视频源选择其中一路送到光机模块投射，本质也是一个多视频源切换的过程，其基本流程如图7所示：
第一步，检测多路HDMI源的供电电压信号；
第二步，判断是否单路视频源有效？若是，则转第五步；若否，转下 一步；
第三步，判断是否多路视频源中两路以上(含两路)同时有效？是，转下一步；否，转第一步重新检测；
第四步，根据缺省或用户设定的优先级判别视频源优先级，选中最高优先级视频源为有效视频源；
第五步，HDMI转换器的DDC、供电电压、HPD(Hot Plug Detection，热插拔检测)通道均切到有效的单路视频源或多路中优先级最高的视频源；
第六步，视频源经DDC传输EDID到HDMI转换器，确认源端显示性能参数；同时回传HPD到源，通知源准备进行视频播放；
第七步，视频到达HDMI转换器加载HDCP，转换投影视频格式，进行投影播放。
上述过程中，CEC不需切换，因多路HDMI CEC是共接的。
MHL视频播放切换和HDMI不同，不是回送HPD信号到视频源，而是通过CBUS(MHL在相当于USB ID的信的号线上的重新定义，所有HDMI控制类信号如DDC、HPD、CEC等均走此路)回送。
在本实施例中，通过多个不同外在形态的USB接口以及内部视频、音频、USB数据通道的扩展，实现多路视频、音频、USB数据可以同时接入。特别是基于不同形态的USB接口的多路MHL和DP转HDMI视频源转换为光学投影
进一步地，本实施例中数据及充电口120通过配置通道信号(CC)脚获取电能，接口控制器610与数据及充电口120之间存在电源线，接口控制器610通过电源线获取配置通道信号脚传输的电能并传输给充电管理模块160。
在本实施例中，数据及充电口120采用USB-C接口时，对来自于USB-C接口的电源来说，其需要通过内置USB-C和PD控制器才能通达到充电管 理模块。如果没有内置USB-C检测&PD控制器，USB-C接口仅能允许提供5V/0.5A/1A/3A电源，无法满足大容量内置电池投影仪的功耗需求。内置USB-C检测&PD控制器可以实现最大100W的供电能力，且可以支持快速充电；PD通过CC信号传输。结合前述实施例，可知功率MOS管可嵌入在USB-C接口和USB-C检测&PD控制器之间。
特别地，USB-C检测&PD控制器与USB-C接口之间的电源线是双向的，是该控制器同时使得USB-C具有OTG(on the go，摆脱了原来主从架构的限制，实现设备间端对端数据传送)功能，接收鼠标、键盘和移动硬盘信息。
根据图6对应的实施例，可知本发明就例如投影仪产品的电子设备大功耗的情况下，通过在搭建电路解决USB-C多功能复用并提供专用DC充电口和USB-C充电切换功能，并额外扩展多路USB-A就音视频和USB协议数据功能本身提供多通道，以方便用户不需额外买配件就能充电和数据功能良好复用。本发明实施例的电子设备提供USB-C接口和DC充电口均能充电的功能，且确保USB-C接口的DP视频数据、音频线、USB数据和20V/5A电源的复用互不相扰，并对USB-A接口进行USB数据和MHL视频数据扩展兼容。其中，USB-C接口可以接入USB数据线、DP视频线、音频线、20V/5A通用电源适配器，DC充电口仅能接入20V/5A专用电源适配器。两者同时接入电源适配器时，由电源开关进行切换单路电源到充电管理芯片对内置大容量电池(典型值10000mAh以上)充电。USB-C接口的USB数据信号和DP视频数据信号走同一通路到高速数据交叉开关阵列，电源信号则走另一通路经USB-C检测&PD控制器然后到充电管理芯片。USB-C检测&PD控制器有控制信号控制高速数据交叉开关阵列对USB数据和DP视频数据进行分离，DP视频数据经DP转HDMI芯片到达经主处理器控制的多路HDMI接收器转换为光机模块的视频模式投射；USB数据有高速和低速数据，其数据可以直达主处理器，但通常主处理接收的USB端口受限，在需兼容既有USB-A接口外设情况下，增加USB HUB(集线器)扩展两个USB-A接口实现 多路USB口、多路USB数据同时接入系统主处理器(靠近主处理器侧为单路USB数据通道)。两个USB-A接口可以同时传输MHL视频信号，分别经两个MHL转HDMI芯片到达多路HDMI接收器，主处理器通过软件控制多路HDMI接收器对一路DP转HDMI和两路MHL转HDMI共计三路视频源选择其中一路送到光机模块投射，图6对应实施例的电子设备在内置大容量电池的电子设备使用USB-C接口进行高速数据传输和大电流充电情况下，另外再配置DC充电口、USB-A接口：
1、实现USB-C口和DC充电口、USB-A口可以充电和数据业务相互切换并相互替代工作，供给系统电源和提供电子设备的视频处理模块(例如投影仪的光机投影模块)外部视频源；
2、实现USB接口和DC充电口充电切换，20V/5A电源可以同时接入经电源开关控制进行单路供电；
3、经由USB-C接口的视频数据和USB协议数据分离后，其USB协议数据经USB Hub扩展兼容多路USB-A口的USB协议数据，实现USB3.0及USB2.0协议多种外设同时接入；
4、USB-C的DP视频信号和USB-A口的MHL视频信号切换经系统控制进行单路使用。
5.在USB-C之外扩展其他不限于USB-A形式的USB口，可实现USB-C被音频尤其是常用的外接耳机占用时其他常规的视频和USB数据功能可以通过其他USB口进行。
基于上述典型的具有一个USB-C口和两个USB-A口的投影仪电源和数据接口切换基本架构，本发明可进一步扩展。在USB-C具有传输音频能力而USB-A没有传输音频能力情况下，这种扩展就更有意义。
简单的扩展基于图一在通常的USB HUB的4个USB口能力范围内进行满载扩展，即直接扩展为四个USB-A口，此种情况如图8所示，由于受主处理控制的多路HDMI接收器入口能力限制(HDMI视频信号线路数多，高 速数字信号干扰大，故通常单个接收器不超过三路入口)，故在HDMI接收器前级加入两个多路高速宽带开关(由于视频高速信号处理难度大，通常单个开关也不超过三路输入)，把四个USB-A口的MHL转换来的HDMI信号和一个USB-C口DP转换来的HDMI信号分别进行二选一和三选一，以满足同时多路视频的接入转换。多路高速宽带开关需要和多路HDMI接收器一样内置存储功能以存储HDCP和外部HDMI传输而来的EDID以确保加密高清视频能解析和获取包含有关监视器及其性能的参数。多路高速宽带开关的多选一处理流程和此处的多路HDMI接收器的视频源切换流程均可按图7流程处理。
更复杂一些的扩展是针对USB-C口和USB-A口同时扩展。如图9所示，本发明给出两个USB-C口和四个USB-A口的电源和数据接口切换实施例。此实施例大体相当于两套图一基本架构叠加，只不过处理器、音频加解码器、多路HDMI转换器和光机模组与充电模块、大容量电池、电源开关电路和DC充电口是共用的。
这种共用的公共端接入是通过图中的①②③④⑤⑥⑦标识符实现。
其中，①②③把USB-C 2口的DP转换来的HDMI视频源与分别由USB-A3口、USB-A4口MHL转换来的HDMI视频源送入到多路高速宽带开关2进行三选一路视频，再与并行的USB-C 1口的DP转换来的HDMI视频源与分别由USB-A1口、USB-A2口MHL转换来的HDMI视频源送入到多路高速宽带开关1的三选一的视频一起接入到主处理控制的多路HDMI接收器，经后者切换单路视频源转换为光机模块接收的视频格式进行投影播放。
④携带USB-C 2口的电源电位信息和USB-C1口的电源电位信息一起送入或门(这个或门只是为了表明逻辑关系放在了电源开关控制电路的前级，实际理想的位置是如图10所示，在DC充电口的分压电路后端，即两个USB-C充电口分别经门限检测和分压电路之后，送入公用的或门，通过或逻辑到达公用的反相器及后续电路)，然后到达电源开关控制电路，最终实现任意一个USB-C口有外接20V/5A适配器时能够关掉DC充电口的电 源开关，实现由USB-C口充电(两个USB-C口均接入时，相当于并联输入，每个口只提供总充电电流的一半电流)。这种或门的存在不能实现DC充电口对两个USB-C的充电的逆向关断控制。逆向关断不需要或门，只需要在图三的电位平移电路右侧兵分两路同时控制挂在两个USB-C口上的NMOS功率开关管的G极即可。
⑤对接USB-C 2口关联的USB-C检测&PD控制器到充电管理模块对系统提供电源。
⑥对接USB-C 2口的音频信号到音频加码解码器实现音频输入输出。
⑦对接USB-C 2口经高速数据交叉开关阵列分离出USB协议数据后挂接的USB HUB2的USB数据到主处理器，实现USB-C 2口和主处理器的USB协议数据通信。
以上参照附图说明了本发明的优选实施例，并非因此局限本发明的权利范围。本领域技术人员不脱离本发明的范围和实质，可以有多种变型方案实现本发明，比如作为一个实施例的特征可用于另一实施例而得到又一实施例。凡在运用本发明的技术构思之内所作的任何修改、等同替换和改进，均应在本发明的权利范围之内。
工业实用性
本发明实施例提供的上述技术方案，同时具有数据及充电口和直流充电口，对数据及充电口和直流充电口检测，当数据及充电口和直流充电口中至少之一传输电能时，则选择接入电能的一个接口将其与充电管理模块导通，以供充电管理模块获取电能并为电池充电；根据本发明实施例的电子设备，检测数据及充电口、数据口传输的数据，使得不论数据及充电口是否用于充电，只要二者之一进行视频数据传输，电子设备即获取视频数据进行处理。

Claims (8)

  1. 一种电子设备，所述电子设备中置入电池，所述电子设备包括：数据及充电口、直流充电口、数据接口、电源开关、充电管理模块、主处理器、视频接收器、视频处理模块；
    所述数据及充电口设置为传输电能或传输视频数据；
    所述直流充电口设置为传输电能；
    所述数据接口设置为传输所述视频数据；
    所述电源开关检测所述数据及充电口、所述直流充电口是否传输电能，并根据检测结果将所述数据及充电口或所述直流充电口与所述充电管理模块导通，所述充电管理模块在与所述数据及充电口或所述直流充电口导通后，使用所述数据及充电口或所述直流充电口为所述电池充电；
    所述主处理器控制所述视频接收器检测所述数据及充电口、所述数据口是否传输视频数据，并根据检测结果接收一路视频数据，并发送给所述视频处理模块以进行处理。
  2. 根据权利要求1所述的电子设备，其中，所述电源开关包括门限检测电路、反相器、比较器、开关管；
    所述门限检测电路检测所述数据及充电口的电位；
    所述反相器获取所述数据充电口的电位或所述直流充电口的电位并输入对应的反相电位；
    所述比较器将所述数据充电口的反相电位与所述直流充电口的电位进行比较，或将所述数据充电口的电位与所述直流充电口的反相电位进行比较，比较结果电位控制所述开关管的打开或闭合；
    所述开关管的打开或闭合造成所述数据及充电口、所述直流充电口与所述充电管理模块之间的导通或断开。
  3. 根据权利要求1所述的电子设备，其中，所述数据及充电口、所述数据口还设置为传输接口协议数据；所述主处理器设置为处理所述数据及充电口、所述数据口传输的所述接口协议数据。
  4. 根据权利要求3所述的电子设备，其中，还包括：接口控制器、高速数据开关交叉阵列；
    所述接口控制器控制所述高速数据开关交叉阵列对所述数据及充电口进行检测，在检测到所述数据及充电口传输所述接口协议数据时将其传输至所述主处理器，在检测到所述数据及充电口传输所述视频数据时将其传输至所述视频接收器。
  5. 根据权利要求4所述的电子设备，其中，
    所述数据及充电口通过配置通道信号脚获取电能，所述接口控制器与所述数据及充电口之间存在电源线，所述接口控制器通过所述电源线获取所述配置通道信号脚传输的电能并传输给所述充电管理模块。
  6. 根据权利要求1所述的电子设备，其中，还包括第一转接芯片、第二转接芯片；
    所述视频接收器设置为接收高清晰度多媒体接口视频；
    所述数据及充电口接收的视频数据为视频接口视频，所述第一转接芯片将所述视频接口视频转换为所述高清晰度多媒体接口视频后发送给所述视频接收器；
    所述数据接口接收的视频数据为移动终端高清影音标准接口视 频，所述第二转接芯片将所述移动终端高清影音标准接口视频转换为所述高清晰度多媒体接口视频后发送给所述视频接收器。
  7. 根据权利要求1所述的电子设备，其中，
    所述数据接口数量为多个。
  8. 根据权利要求1所述的电子设备，其中，
    所述视频处理模块为光学投影模块。
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