WO2010139135A1 - 扩展模块及具有该扩展模块的电视机 - Google Patents

扩展模块及具有该扩展模块的电视机 Download PDF

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Publication number
WO2010139135A1
WO2010139135A1 PCT/CN2009/073296 CN2009073296W WO2010139135A1 WO 2010139135 A1 WO2010139135 A1 WO 2010139135A1 CN 2009073296 W CN2009073296 W CN 2009073296W WO 2010139135 A1 WO2010139135 A1 WO 2010139135A1
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WO
WIPO (PCT)
Prior art keywords
signal
interface
television
expansion module
signal source
Prior art date
Application number
PCT/CN2009/073296
Other languages
English (en)
French (fr)
Inventor
陈宜龙
郭建伟
樊磊
喻子达
胡希嘉
陈亮
Original Assignee
海尔集团公司
青岛海尔电子有限公司
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 海尔集团公司, 青岛海尔电子有限公司 filed Critical 海尔集团公司
Priority to CA2764246A priority Critical patent/CA2764246A1/en
Priority to US13/143,784 priority patent/US20110317076A1/en
Priority to EP09845415.0A priority patent/EP2439924B1/en
Publication of WO2010139135A1 publication Critical patent/WO2010139135A1/zh

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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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/41—Structure of client; Structure of client peripherals
    • H04N21/418—External card to be used in combination with the client device, e.g. for conditional access
    • H04N21/4183—External card to be used in combination with the client device, e.g. for conditional access providing its own processing capabilities, e.g. external module for video decoding

Definitions

  • the present invention relates to an expansion module and a television set having the same, and more particularly to an expansion module for expanding a television signal source and a television set having the expansion module.
  • the set-top box converts the digital signal into a standard video signal A/V interface signal or analog component video signal Y, U, V, etc. Interface signal, and output the converted low display resolution analog signal to the TV, as shown in Figure 1, the TV is connected to the DVD set-top box, DVB set-top box, IP TV set-top box through the A/V port, but this architecture, Each set-top box needs independent power supply to supply power.
  • each set-top box needs a separate remote control to control it separately, and the signal output from the set-top box to the TV is still an analog, low-resolution image.
  • there are many resources between these devices such as:
  • Each device requires power, each device requires a remote control, each product has a number of output terminals of different colors and different colors, so that The external connection is complicated, it is extremely inconvenient to install and use, and it takes up space. When using different equipment, it is necessary to reconnect the thread.
  • multiple remote controls are inconvenient to save and operate. When a user adds a new device, it must be a complete machine, so the user's comprehensive use cost is high, and the output of each device is not standardized, and the interface and performance of similar products are greatly different.
  • some expensive high-end digital TVs have high-resolution display modes such as 1080P, 1080i, and 720P, and external devices need to pass a wide variety of interfaces, such as VGA. (Video Graphics Array, Video Graphics Array), DVI (Digital Visual Interface), HDMI (High Definition Multimedia Interface), etc. Due to the wide variety of interfaces on the TV itself, the output modes of external accessory products, such as set-top boxes, are also varied. Often, the output signals of the set-top boxes cannot ensure the image quality of high-end TVs to the fullest.
  • the invention patent No. 200420109717.1 discloses a television digital video disc playing integrated machine, which is built into a television set by the digital video disc DVD playing function, so that the television can watch both the television program and the digital video.
  • Disc DVD discloses a television digital video disc playing integrated machine, which is built into a television set by the digital video disc DVD playing function, so that the television can watch both the television program and the digital video.
  • the invention patent No. 200520115859.3 discloses a recordable IP TV integrated machine, which incorporates an IP TV set top box into the LCD TV.
  • movement circuits in which different interface circuits are used to connect the television sets.
  • the technical problem to be solved by the present invention is to provide an expansion module for expanding a signal source of a television and a television set having the same.
  • An expansion module is connected between the television and the signal source, so that the signal source interacts with the television signal, wherein the expansion module includes a first interface and a second interface, the first The interface is electrically connected to the television and communicates with each other. The second interface is electrically connected to the signal source, and outputs a power signal and a control signal to the signal source.
  • the expansion module is detachably connected to the television.
  • a signal switching device for switching a signal source is disposed between the expansion module and the signal source, and the expansion module outputs a power signal and a control signal to the signal switching device.
  • the signal switching device connects at least one signal source and outputs a power signal and a control signal to the signal source.
  • the signal source is detachably connected to the signal switching device.
  • the expansion module further includes one of a streaming media processing unit, a video processing unit, an audio processing unit, or a graphics processing unit.
  • a television set comprising an expansion module connected to a signal source, wherein the expansion module comprises a first interface and a second interface, the first interface is electrically connected to the television and communicates with each other, the second The interface is electrically connected to the signal source, and outputs a power signal and a control signal to the signal source.
  • the expansion module is detachably connected to the television.
  • a signal switching device for switching a signal source is disposed between the expansion module and the signal source, and the expansion module outputs a power signal and a control signal to the signal switching device.
  • the signal switching device is connected to at least one signal source and outputs a power signal and a control signal to The signal source.
  • the signal source is detachably connected to the signal switching device.
  • the expansion module further includes one of a streaming media processing unit, a video processing unit, an audio processing unit, or a graphics processing unit.
  • the expansion module provided by the embodiment of the present invention has a first interface and a second interface, and the first interface is electrically connected to the television and communicates with each other.
  • the second interface is electrically connected to the signal source, and outputs a power signal and a control signal to the signal source, so that the signal source of the expansion module and the television can communicate well, thereby facilitating control, saving resources, and wide application range. And the upgrade is convenient.
  • FIG. 1 is a schematic view showing a receiving device of a conventional television set
  • FIG. 2 is a block diagram showing the principle of a television signal extension according to a preferred embodiment of the present invention
  • Figure 3 is a block diagram showing a connection circuit between a television set and an expansion module in accordance with a preferred embodiment of the present invention
  • FIG. 4 is a circuit block diagram showing an expansion module according to a preferred embodiment of the present invention
  • FIG. 5 is a schematic diagram showing signal transmission by a signal source through a signal switching device and an expansion module and a television set according to a preferred embodiment of the present invention
  • Figure 6 illustrates a flow chart of a control method with an expansion module television set in accordance with a preferred embodiment of the present invention.
  • FIG. 2 it is a system block diagram of a TV signal extension according to a preferred embodiment of the present invention.
  • the expansion module 30 of the present invention is electrically connected to the signal source 50 through a signal switching device 40.
  • the signal source 50 may not directly connect the expansion module 30 with the signal switching device 40.
  • the media signal of the signal source 50 is sent by the expansion module 30. The number is transmitted to the television 10 for playback.
  • the expansion module 30 of the present invention can be disposed inside the television 10 and electrically connected between the TV processing unit 20 and the signal switching device 40.
  • the expansion module 30 is provided with an interface for connecting the TV processing unit 20 and
  • the expansion interface 325 is connected to the expansion interface 325 of the signal switching device 40.
  • the expansion interface 325 can be connected to the interface 401 on the signal switching device 40 that is paired with the interface through a signal transmission line, and the expansion module 30 is completed through the signal transmission line.
  • a signal transmission line between the signal transmission device 40 wherein the signal transmission line can be a signal transmission line such as HDMI, DP (Data Processing), DVI, etc., and the signal transmitted through the signal transmission line can include a control signal, an audio and video signal.
  • the signal transmission line can also be replaced by a wireless network.
  • the expansion port 402 on the signal switching device 40 can be coupled to multiple signal sources 50, and can transmit power signals, control signals, audio and video signals, etc. through the electrical connection between the expansion port 402 and the signal source 50. These signals can be transmitted to the television set 10 via the signal switching device 40 and the expansion module 30 such that the television set 10 plays content on a variety of different signal sources 50 and expands its functionality through a variety of different signal sources 50.
  • the expansion module 30 also has the function of the signal source 50, which can be used alone to extend the function of the television set 10.
  • the expansion module 30 and the signal source 50 can be in the form of an expansion card.
  • the expansion card can be an exposed circuit board.
  • the upper side of the expansion card is provided with a user operation interface, and the external signal interface can be inserted.
  • a connector terminal is provided on one side.
  • the connector terminal corresponds to the interface of the television processing unit 20 and the interface of the signal switching device 40, so that the connector can be plugged into the expansion module 30 and the signal source 50.
  • the terminals are plugged and unplugged to plug or remove the expansion module 30 and the signal source 50 on the television processing unit 20 and the signal switching device 40.
  • the positional relationship between the connector terminal and the socket port can also be interchanged, that is, the socket port is disposed on the expansion module 30 and the signal source 50, and the connector terminal is set.
  • the interface of the television processing unit 20 and the expansion port 402 of the signal switching device 40 are electrically coupled to the television processing unit 20 and the signal switching device 40.
  • source 50 such as extension boxes.
  • the expansion module 30 and the signal source 50 of the present invention use a unified modular design due to the full consideration of the diversity of the digital television signal source and the optimal display effect of the digital television and the future expansion capability of the system.
  • the socket terminal and the socket slot are made by means of a gold finger connector.
  • the design of the gold finger connector is standardized with the modularization of the expansion module 30 and the signal source 50, and the product connection is convenient and flexible.
  • the corresponding gold finger connector has a uniform specification of the connector terminal and the socket slot, and the specifications herein refer not only to the connector terminal and the socket slot.
  • the arrangement of electrical signals is the same, and the size specifications on the physical dimensions are uniform.
  • the signal transmitted by the gold finger connector of the present invention includes at least a power supply signal, a control signal, and an audio and video signal.
  • the connector terminal is disposed on the expansion module 30, which may be a gold finger connector made of a printed circuit board.
  • the conductive portions on the two are in contact with each other to form an electrical connection, so that the control signal
  • the audio and video signals and the power signal are transmitted to the expansion module 30.
  • the surface of the conductive portion of the plug terminal is gold plated, and has the characteristics of good electrical conductivity, wear resistance and oxidation resistance.
  • the signal transmitted by the gold finger connector includes a power signal, so that the television processing unit 20 can supply the power of the expansion module 30 to the expansion module 30 by inputting a power signal, and simultaneously process the data in the expansion module 30 and the television through the control signal.
  • a control information contact mechanism is established between the units 20 for coordinated operation to transfer audio and video signals between the expansion module 30 and the television processing unit 20, by which the expansion module 30 inputs power signals through the television processing unit 20. And control signals, effectively achieve energy saving and easy control, to meet user needs.
  • the gold finger connector is also used between the signal source 50 and the signal switching device 40, so that the plurality of signal sources 50 are uniformly powered and controlled by the signal switching device 40.
  • the plurality of signal sources 50 are uniformly powered and controlled by the signal switching device 40.
  • it can fully reflect the digital TV source display standard, and can simultaneously watch different types of digital TV sources, such as digital broadcast sources, digital broadcast sources and digital network sources, etc., and can also complete the transition from analog TV to digital TV at this stage.
  • consumers only need to purchase a signal source 50 that meets the standardized interface, thus providing different functions at a lower and flexible cost.
  • Group of signal source 50 and signal switching device 40 Used together, the source 50 also supports stand-alone use. Due to the flexible configuration of the "modular", it also extends the consumption field of the products. New technologies and new products can be applied to the system by adding newly developed modules.
  • the signal source 50 can be an extended function of the television 10, and performs data communication between the signal processing device 40 and the expansion module 30 and the television processing unit 20.
  • the signal source 50 includes module circuits with different functions, and the functions realized are also different, for example: a video recording module circuit capable of playing high-definition video and recording, learning learning entertainment module circuit for learning English and playing games; A digital TV module circuit that plays digital signals, a network download module circuit that can download movies on the Internet, and the like.
  • a television 10 that supports a source 50 can perform different functions by replacing a signal source 50 of a different function.
  • the expansion module 30 itself may also have an extended television function module similar to the signal source 50.
  • the expansion module 30 includes a function expansion module 31, an external interface, a memory, and a DC-DC power supply 34 disposed on a Printed Circuit Board (PCB).
  • PCB Printed Circuit Board
  • the function expansion module 31 is a core component of the expansion module 30, and includes a processor and various functional units, which receive communication and control signals input by the plug-in terminals, audio and video signals, or data signals input by an external interface, and then the signals are Performing operations, processing, operations, and the like, returning the processing result or data to the television processing unit 20 through the gold finger connector or outputting to an external device or an external network connected to the external interface.
  • the external interface includes a serial bus interface such as a USB interface 321, a card reader 322, a network interface 323, other interfaces 324, and an expansion interface 325.
  • the USB interface 321 is used to connect a USB memory or other serial communication device using a USB interface.
  • the card reader 322 can read a variety of different types of memory cards.
  • the network interface 323 can be connected to various external networks such as Ethernet, telephone network, wired network, and optical fiber network.
  • the interface can be RJ-45, RJ-11, parallel port, such as LPT (Line Print Terminal) port, SC ( Smart Card), which is a type of fiber port, a coaxial port, and the like.
  • the other interface 324 is, for example, an IDE (Integrated Device Circuit) interface for connecting a hard disk or an optical drive, ATA (Advanced) Technology Attachment, Advanced Technology Attachment) / SATA (Serial Advanced Technology Attachment) interface, mouse interface, keyboard interface, gamepad interface, special interface for microphone interface, etc.
  • Expansion interface 325 is used for plugging The signal transmission line is connected to the signal switching device 40.
  • the memory functions as a storage data unit of the function expansion module 31, and can store audio and video signal data as well as communication and control signal data. It includes a dynamic memory 331 and a static memory 332.
  • the dynamic memory 331 may be a dynamic random access memory (DRAM) such as DDR or SDR.
  • the static memory 332 can be a flash (Flash).
  • the DC-to-DC (DC/DC) 34 power supply receives the power signal input from the plug-in terminal, such as 12 V, which acts as a switching power supply. It can boost or step down the input power signal to convert it to the required one.
  • the voltage is fixed and output to the function expansion module 31, the external interface, and the memory to provide a suitable operating voltage for each component.
  • the power signal can also be transmitted to the signal switching device 40 by the expansion interface 325 in the external interface.
  • the function expansion module 31 of the present invention includes a plurality of functional units, which can be divided into two major types: a processing unit and an interface unit.
  • the functional unit includes a central processing unit 3111, a streaming media processing unit 3112, a video processing unit 3113, an audio processing unit 3114, and a graphics processing unit 3115.
  • the interface unit includes a static memory interface 3116, a dynamic memory interface 3117, a video input and output interface 3118, an audio input and output interface 3119, a data communication bus 3120, an external device interface 3121, a universal interface 3122, a USB controller 3123, a network card controller 3124, and an ATA. Interface 3125.
  • the functional unit is responsible for executing the received communication and command signals and processing the received audio and video signals.
  • the streaming media processing unit 3112 is responsible for processing the received streaming media data.
  • the video processing unit 3113 is responsible for processing the video signal.
  • the audio processing unit 3114 is responsible for processing the audio signals.
  • the graphics processing unit 3115 is responsible for generating a program graphical interface such as a program menu, or generating a user interface such as a learning screen, an entertainment screen, and an electronic game screen.
  • the central processing unit 3111 is responsible for controlling all functional units and interface units, and receiving and executing input communication and command signals.
  • the interface unit is responsible for internal, external and data communication and transmission between the units.
  • static The state memory interface 3116 is responsible for reading and writing operations to the static memory.
  • the dynamic memory interface 3117 is responsible for reading and writing operations to the dynamic memory.
  • the video input and output interface 3118 is responsible for the input and output operations of the video signal.
  • the audio input/output interface 3119 is responsible for input and output operations of audio signals.
  • the data communication bus 3120 is responsible for communication and command signals and data communication operations between the internal units.
  • the external device interface 3121 is responsible for communication and data transfer between the function expansion module 31 and an external device.
  • the universal interface 3122 not only supports common interrupt and query low-speed data transmission methods, but also supports DMA (Direct Memory Access) high-speed data transmission mode, and supports multiple I/O port types to meet various application requirements.
  • the USB controller 3123 is responsible for reading external USB data or writing data to an external USB device.
  • the NIC controller 3124 is responsible for communication and data transmission with the external network.
  • the ATA interface 3125 is responsible for reading and writing operations on devices such as card readers, hard disks, and optical drives.
  • the expansion module 30 is standardized so that the expansion module 30 can be adapted to a wider range of regions and manufacturers.
  • standard modular design of each functional unit or interface allows for flexible and cost-effective configuration.
  • it is only necessary to combine functional units or interfaces according to functional requirements. In this way, there is enough room for future new functions, new modules, and new interfaces to be added, and the future modules are connected with the existing modules. Everything is prepared from interface specifications and software upgrades.
  • new function modules can be added directly by using the same interface specifications and conforming to the unified protocol specifications.
  • the entire system software can be updated and upgraded through various methods such as USB interface and network interface.
  • Digital all-in-one signal source The function source of the digital all-in-one signal source includes a set-top box chip, which can receive digital interactive TV program signals.
  • the external interface of the digital all-in-one expansion card includes the RF interface of the cable interface, the network interface, and the HDMI interface. With a digital all-in-one signal source, you can watch cable digital HD signals without connecting to a set-top box.
  • high-definition recordable signal source function signal source includes video processing unit, audio processing unit, USB controller and ATA interface, can convert TV programs into video files and store them to flash (Flash) chips.
  • the external interface of the HD recordable signal source includes a USB interface And IDE / ATA / SATA interface, you can connect to a USB memory or mobile hard disk to store video files.
  • the HD recordable signal source can also include a timer, and the user can record the TV program at will by using instant recording or timed recording.
  • users can also download high-definition video files such as MPEG, TS (Transport Stream) and then play them on HD recording sources.
  • the function signal source for learning entertainment signal source includes central processing unit and graphic processing unit.
  • the static memory stores programs such as poetry reading, English learning materials and electronic games.
  • the external interface includes the game controller interface.
  • the central processing unit and the graphics processing unit can execute the program stored in the static memory according to the user selection, and play the result, including the graphic menu, the audio signal, and the video signal, through the television 10.
  • the above description of the signal source is for making the present invention easier to understand by the person skilled in the art.
  • the signal source of the present invention is not limited to the above structure, and various new functional units and interface units can be added to the signal source.
  • the technician can also design the functional unit and interface unit of the signal source and other functional modules according to requirements.
  • the television set 10 to which the signal switching device 40 and the expansion module 30 of the present invention are connected includes a television processing unit 20, a power supply module 21, and an LCD panel 22.
  • the power module 21 is electrically connected to the TV processing unit 20 and the LCD panel 22 to provide an operating voltage, and the power module 21 can also be integrated into the TV processing unit 20.
  • the television processing unit 20 is a main board of the television set 10, which is disposed inside the television set 10 and includes functional modules such as a television movement module 200, an audio output 201, and a memory.
  • the television movement module 200 can receive audio and video signals of different formats through various external interfaces of the television 10, and these signals can be analog signals or digital signals. These signals may include receiving radio frequency signals (RF), composite video broadcast signals (CVBS), luminance/chrominance signals (Y/C), color difference signals (Y/Pb/Pr), VGA (Video Graphics Array). ) Signals, DVI (Digital Visual Interface) signals, HDMI (High Definition Multimedia Interface) signals, and other existing audio and video signals.
  • the audio and video signals are processed and output to the display panel of the television and the audio equipment.
  • the TV movement module 200 internally includes a plurality of functional units such as a microprocessor, a graphics processor, a video processing unit, an audio processing unit, a demodulator, a decoder, a data communication bus, and a 10 interface. It can pass audio and video signals of different formats through various external interfaces of the television 10, and these signals can be analog signals or digital signals. These signals may include audio and video analog signals or digital signals such as CVBS signals, Y/C signals, Y/Pb/Pr signals, DVI signals, HDMI signals, TV signals, and VGA signals.
  • a microprocessor such as a graphics processor, a graphics processor, a video processing unit, an audio processing unit, a demodulator, a decoder, a data communication bus, and a 10 interface. It can pass audio and video signals of different formats through various external interfaces of the television 10, and these signals can be analog signals or digital signals. These signals may include audio and video analog signals or digital signals such as CVBS signals, Y/C signals, Y/Pb
  • the TV processing unit 20 is connected and communicated with an external device through the interface of the peripheral 10, and the communication can use General Purpose 10 Interface (GPIO), Pulse Width Modulation (PWM), and general asynchronous transmission and reception. And so on.
  • the television processing unit 20 processes the signals received in different formats, converts the video signals into LVDS signals (Low Voltage Differential Signaling) and outputs them to the LCD panel 22 to display images, and outputs the audio signals to the audio. Output 201 to produce a sound.
  • GPIO General Purpose 10 Interface
  • PWM Pulse Width Modulation
  • the television processing unit 20 processes the signals received in different formats, converts the video signals into LVDS signals (Low Voltage Differential Signaling) and outputs them to the LCD panel 22 to display images, and outputs the audio signals to the audio.
  • Output 201 to produce a sound.
  • the audio output 201 is for converting an audio signal in the form of an electrical signal into a sound signal in the form of an air vibration, which may be a device such as a speaker or a speaker.
  • the memory can store audio and video signal data as well as communication and control signal data. It includes dynamic memory 2021 and static memory 2022.
  • the dynamic memory 2021 is an on-demand memory, which is generally used to store formal parameters of functions, automatic variables or data allocated by the runtime, instructions, etc., which may be dynamic random access memories (DRAMs) such as DDR and SDR.
  • DRAMs dynamic random access memories
  • the static memory 2022 is a fixed-distributed memory, and is generally used to store global variables or pre-compiled data, instructions, etc., which may be flash memory (Flash).
  • the signal switching device 40 includes an MCU (Micro Controller Unit) 411, a normal power source 412, a 12V power source 413, and first and second audio and video processing units, and the MCU 411 and the signal switching device 40.
  • the expansion module 30 and the television processing unit 20 are electrically connected and can exchange communication control signals with the television processing unit 20. At the same time, the television processing unit 20 can also provide power to the expansion module 30 by the extension module 30.
  • the signal is sent to the MCU 411 of the signal switching device 40 to supply power to the MCU 411, of course, the MCU 411
  • the power can be directly supplied by the normal power source 412 in the signal switching device 40 after the current voltage is converted; the MCU 411 can also transmit a control signal to the first and second audio and video processing units to control the first And the second audio and video processing unit transmits the YPBPR/RGB signal and the audio and video signal to the television processing unit 20 through the interface; in addition, the MCU 411 can transmit the power switch signal to the normal power source 412 and the 12V power source 413 to control the common A power supply 412 generates the 12V power supply 413 and transmits a 12V power supply signal to the signal source 50 to power the signal source 50; and the MCU 411 can transmit detection, control, and communication signals to the signal source 50 and pass The detection signal detects the presence or absence of the signal source 50, and the type of signal source 50 present, by which the signal source 50 is controlled to operate, and the signal source 50
  • the signal source 50 includes a first signal source 501, a second signal source 502, a third signal source 503, and a fourth signal source 504.
  • the first to fourth signal sources 501, 502, 503, and 504 are powered by a 12V power supply signal of the 12V power supply 413 disposed on the signal switching device, wherein the 12V power supply 413 can be externally connected to the AC 220V.
  • the normal power source 412 of the power source 412 is supplied after AC-DC (AC to DC) and DC-DC (DC to DC).
  • the first to fourth signal sources 501, 502, 503, and 504 may input a YPBPR/RGB signal to the first audio and video processing unit 414a, and pass the first audio and video.
  • the processing unit 414a inputs the YPBPR/RGB signal to the television processing unit 20 through an interface; after the first to fourth signal sources 501, 502, 503, and 504 obtain the 12V power signal and are powered on,
  • the second audio and video processing unit 414b inputs an audio and video signal, and inputs the audio and video signal to the television processing unit 20 through the interface through the second audio and video processing unit 414b; in addition, the first to fourth signal sources 501, 502, 503, 504 can also receive the communication signal and the TV output audio and video signal sent by the television processing unit 20 through the interface, and can transmit the line synchronization signal to the television processing unit 20 through the interface.
  • the expansion module 30 is inserted into the television set 10, and is electrically connected to the television processing unit 20, and then the signal switching device 40 is connected to the extension module 30 through an interface and a signal transmission line or wirelessly.
  • the television processing unit 20 The power module can be transmitted to the MCU 414 within the signal switching device 40 via the expansion module 30 or the normal power source 412 to cause the MCU 414 to receive power and begin operation.
  • the MCU 414 sends a power switch signal to the 12V power source 413.
  • the 603, 12V power supply 413 generates a 12V power supply to the signal source 50.
  • the MCU can determine whether the signal source 50 exists by inputting a detection signal to the signal source 50.
  • the MCU 414 exchanges communication control signals with the television processing unit 20 through the signal transfer source 30 to determine a signal source 50 that needs to be operated in the case where a plurality of signal sources 50 are simultaneously present.
  • the MCU 414 sends a control signal to the signal source 50 that needs to work, and starts the signal source 50 to operate.
  • the MCU 414 detects the type of the signal output of the signal source 50.
  • the identification signal output by the insertion detecting circuit corresponds to the function type of the signal source 50, which not only indicates that the signal source 50 has been inserted.
  • the signal switching device 40 is electrically connected to the MCU, and further informs the MCU of the function type of the signal source 50, such as a digital all-in-one signal source, a high-definition recordable signal source, or a learning entertainment signal source.
  • the identification signal can use a set of binary codes to represent the source 50 of different functional types.
  • the audio and video signals are input to the television processing unit 20 and processed by the processing unit to play the content of the signal source 50.
  • the signal source 50 outputs an audio and video type signal identifier to the television processing unit 20, and the audio and video type signal identifier can indicate the signal type of the expansion card input by the external interface through a set of binary codes, and the signals include radio frequency signals.
  • RF Radio frequency
  • CVBS Composite Video Broadcast Signal
  • Y/C Luminance/Chroma Signal
  • Y/Pb/Pr Chromatic Aberration Signal
  • VGA Video Graphics Array
  • DVI Digital Visual Interface
  • HDMI High Definition Multimedia Interface
  • the television processing unit 20 After receiving the identification signal, the television processing unit 20 switches the corresponding display channel.
  • the MCU 414 controls the audio and video processing unit to output a signal to the television processing unit 20 through the signal extension source, and the television 10 starts to play the signal source 50 to output the signal content.
  • the signal processing unit 20 and the signal source 50 communicate with each other via the signal switching device 40 and the expansion module 30 in a communication manner such as UART/IIC/IR.
  • the user can select the television set via the remote control to watch the program in the normal television reception mode or the source mode.
  • the infrared command sent by the remote controller can be transmitted to the television processing unit 20, and then processed by the television processing unit 20 to issue a control command, which is controlled by the extension module 30 and the signal switching device 40.
  • the signal is then transmitted by the gold finger connector to the signal source 50 for corresponding operation; of course, since the signal source 50 has an external device interface that can receive the UART/IIC/IR command, the remote controller can also be connected to the signal source 50. Data communication is directly performed to control its operation.
  • the purpose of controlling the television 10, the expansion module 30, the signal switching device 40, and the plurality of signal sources 50 with a single remote controller is convenient for the user to operate the television set 10.

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
  • Controls And Circuits For Display Device (AREA)

Description

扩展模块及具有该扩展模块的电视机 本申请要求了 2009年 06月 01 日提交的， 申请号为 200910015761.3 , 发 明名称为 "扩展模块及具有该扩展模块的电视机" 的中国申请的优先权， 其 全部内容通过引用结合在本申请中。
技术领域
本发明涉及一种扩展模块及具有该扩展模块的电视机， 特别是涉及一 种用于扩展电视机信号源的扩展模块及具有该扩展模块的电视机。
背景技术
目前， 被广泛使用的多为接收模拟信号的电视机， 在数字电视到来的 时代， 大多是通过外部设备， 如， 机顶盒、 DVD ( Digital Video Disc , 数 字视频光盘）、 DVB ( Digital Video Broadcasting, 数字视频广播）， 将数字 信号转换为模拟信号后输出给电视机进行显示， 例如， 机顶盒将数字信号 接收后转换成标准视频信号的 A/V接口信号或模拟分量视频信号的 Y、 U、 V等接口信号， 并将转换后的低显示分辨率模拟信号输出给电视机， 如图 1所示， 电视机通过 A/V端口分别接驳 DVD机顶盒、 DVB机顶盒、 IP电 视机顶盒， 但此种构架， 每个机顶盒都需要独立电源对其进行供电， 同时， 每个机顶盒还需要独立的遥控器分别对其进行控制， 而这种机顶盒输出给 电视机的信号还是模拟的、分辨率很低的图像。 同时由于外部设备种类多， 这些设备间有许多资源重复， 如： 每个机器都要电源， 每台设备都需一个 遥控器， 每个产品都有数量不等、 颜色不同的输出端子， 这样就造成了外 部连线复杂， 安装、 使用极不方便而且占空间， 使用不同设备都需重新连 一次线头。 同时， 多个遥控器也不便保存、 操作。 用户增加一个新设备， 必需是完整的机器， 因而用户综合使用成本偏高， 同时各设备输出无规范， 同类产品接口、 性能差异大。
另一方面， 一些昂贵的高端的数字电视机， 具有高分辨率如， 1080P、 1080i、 720P 的显示模式， 外部设备需要通过种类繁多的接口， 如 VGA ( Video Graphics Array, 视频图形阵列）、 DVI ( Digital Visual Interface , 数字视频接口）、 HDMI ( High Definition Multimedia Interface , 高清晰多媒 体接口）等与其配接。 由于电视机本身接口种类繁多， 使得外部配套产品， 如： 机顶盒的输出模式也各式各样， 往往机顶盒的输出信号也无法确保将 高端电视机的图像质量效果发挥至极致。
现有技术中， 也有将 DVD、 DVB , IP 电视机顶盒内置入电视机的组 合式电视机。 例如中国第 200420109717.1号发明专利， 公开了一种电视数 字视频光碟播放一体化机， 其通过将数字视频光碟 DVD播放功能内置于 电视机中，使得电视机既可以收看电视节目，又能播放数字视频光碟 DVD。 又如中国第 200520115859.3号发明专利， 公开了一种可录 IP电视一体机， 其将 IP电视机顶盒内置到液晶电视中。然而，在上述组合式电视机的内部， DVD、 DVB、 IP电视机顶盒是釆用不同的接口电路连接电视机的机芯电路。 各种接口的标准并不统一， 也不具有扩展升级功能， 很难增加新的数字节 目接收源。 并且不同的接口类型导致了现有系统升级也比较困难， 更重要 的是无法适应不同地区的加密电视接收， 无法满足各个地区、 各个运营商 之间可能不同的信息流要求。 由于将某一种特定功能与主机做成整机， 破 坏了主机的标准化， 同时， 特定功能还可能不是所有客户所需要的。 此类 机型一般为某一类特殊客户群体定制， 用于特定场合， 而非大众化需求， 产品不能全面推广。 这类组合式电视机由于组合模块之间的差异， 导致产 品规格不一、 不易实现行业标准化， 较难在行业内进行相关产品的配套生 产， 因此生产成本较高、 配套产品不规范。
随着数字化技术的发展， 目前， DVD、 DVB, IP电视机顶盒等设备内 部， 对于音频、 视频信号的读出、 解压缩等处理都已完全数字化， 而且技 术标准规范。 针对数字电视的数字音视频标准接口 HDMI已经在全球推广 普及， 这样， 在这些设备与数字电视之间不再需要传送模拟信号， 而直接 传输标准的音频、 视频数字信号将是大势所趋。
为了克服上述机顶盒的不足之处， 也为了适应数字电视技术不断发展 的趋势，有必要提供一种符合数字电视标准、可扩展信号源并其统一供电、 控制， 适配范围广， 且节约资源、 升级方便的扩展模块。
发明内容
针对现有技术的不足， 本发明解决的技术问题是提供一种用于扩展电 视机信号源的扩展模块及具有该扩展模块的电视机。
为解决上述技术问题， 本发明的技术方案是这样实现的：
一种扩展模块， 连接于电视机和信号源之间， 使所述信号源与所述电 视机交互媒体信号， 其中， 所述扩展模块包括一第一接口和一第二接口， 所述第一接口与所述电视机电连接并交互通信， 所述第二接口与所述信号 源电性连接， 并输出电源信号及控制信号至所述信号源。
进一步地， 所述扩展模块可拆装地与所述电视机连接。
所述扩展模块与所述信号源之间设有一用于转接信号源的信号转接装 置， 所述扩展模块输出电源信号及控制信号至所述信号转接装置。
所述信号转接装置连接至少一个信号源并输出电源信号及控制信号给 所述信号源。
所述信号源可拆装的连接所述信号转接装置。
再进一步地， 所述扩展模块还包括流媒体处理单元、 视频处理单 元、 音频处理单元或图形处理单元之一。
本发明的技术方案还可以这样实现的：
一种电视机， 包括一连接信号源的扩展模块， 其中， 所述扩展模块包 括一第一接口和一第二接口， 所述第一接口与所述电视机电连接并交互通 信， 所述第二接口与所述信号源电性连接， 并输出电源信号及控制信号至 所述信号源。
进一步地， 所述扩展模块可拆装地与所述电视机连接。
所述扩展模块与所述信号源之间设有一用于转接信号源的信号转接装 置， 所述扩展模块输出电源信号及控制信号至所述信号转接装置。
所述信号转接装置连接至少一个信号源并输出电源信号及控制信号给 所述信号源。
所述信号源可拆装的连接所述信号转接装置。
再进一步地， 所述扩展模块还包括流媒体处理单元、 视频处理单 元、 音频处理单元或图形处理单元之一。
与现有技术相比， 本发明的有益效果是： 本发明实施例提供的扩展模 块， 由于具有一个第一接口和一个第二接口， 且该第一接口与电视机电连 接并交互通信， 该第二接口与信号源电性连接， 并输出电源信号及控制信 号至所述信号源， 所以通过该扩展模块信号源和电视机能够很好地进行通 信， 这样， 控制方便、 节约资源、 适用范围广且升级方便。
附图说明
图 1是表示传统电视机的接收装置的示意图；
图 2是表示根据本发明最佳实施方式的电视机信号扩展的系统原理框 图；
图 3是表示根据本发明最佳实施方式的电视机与扩展模块连接电路示 意图；
图 4是表示根据本发明最佳实施方式的扩展模块的电路方块示意图； 图 5是表示根据本发明最佳实施方式的信号源通过信号转接装置及扩 展模块与电视机进行信号传输示意图；
图 6示例说明根据本发明最佳实施方式的带有扩展模块电视机的控制 方法流程图。
具体实施方式
现在，将参考附图来详细地描述本发明的具体实施方式。在这些图中， 用相同的标记表示相同或相似的元件， 即使在不同图中描述它们。
参考图 2所示， 为本发明最佳实施方式电视机信号扩展的系统原理框 图。优选的，本发明扩展模块 30通过一信号转接装置 40电连接信号源 50 , 但在本发明其他实施方式中， 所述信号源 50可不需要信号转接装置 40直 接连接所述扩展模块 30 , 并经所述扩展模块 30将所述信号源 50的媒体信 号传输到电视机 10中播放。
本发明的扩展模块 30可设置于电视机 10内部， 并电连接于电视机处 理单元 20和信号转接装置 40之间，该扩展模块 30内设置有用于连接电视 机处理单元 20的接口和用于连接信号转接装置 40的扩展接口 325 , 该扩 展接口 325可通过一信号传输线与所述信号转接装置 40上的与该接口相配 对的接口 401连接，并通过该信号传输线完成扩展模块 30与信号转接装置 40之间的信号传输，其中，该信号传输线可为 HDMI、 DP( Data Processing, 数据处理）、 DVI等信号传输线，通过该信号传输线传输的信号可包括控制 信号、 音视频信号、 电源信号等， 当然， 该信号传输线也可由无线网络代 替。 另外， 所述信号转接装置 40上的扩展口 402可配接多个信号源 50 , 并可通过该扩展口 402与信号源 50之间的电连接传输电源信号、控制信号、 音视频信号等， 这些信号可通过该信号转接装置 40与扩展模块 30传输至 电视机 10 , 使得电视机 10播放各种不同的信号源 50上的内容， 以及通过 各种不同信号源 50扩展其功能。
值得一提的是， 使得该扩展模块 30同样也具有信号源 50的功能， 可 单独使用， 扩展所述电视机 10功能。
优选的， 所述扩展模块 30和信号源 50可为一扩展卡的形式， 该扩展 卡可为一棵露的电路板， 其上一侧设置有用户操作界面， 即可插入外部信 号界面、 另一侧则设置有一接插端子。 该接插端子和电视机处理单元 20 接口及信号转接装置 40扩展口 402上设置的接插端口相对应，使所述接插 端口可与所述扩展模块 30及信号源 50上的接插端子相插拔， 以将扩展模 块 30及信号源 50在所述电视机处理单元 20及信号转接装置 40上插接或 移除。 在本发明的另一种实施方式中， 所述的接插端子和接插槽口的位置 关系也可以相互调换， 即将接插槽口设置在扩展模块 30和信号源 50上， 接插端子设置在电视机处理单元 20 的接口和信号转接装置 40 的扩展口 402 内， 并与电视机处理单元 20和信号转接装置 40电连接。 当然， 本领 域的普通技术人员在本发明公开的基础上可以明了信号扩展卡 30 和信号 源 50的其他表现形式， 例如扩展盒等。
如图 3所示， 由于充分考虑了数字电视信号源的多样性及发挥数字电 视最佳显示效果以及系统未来扩展能力方面因素，本发明扩展模块 30和信 号源 50釆用了统一的模块化设计，即将上述接插端子和接插槽口以金手指 连接器的方式制作，所述金手指连接器的设计标准化配合扩展模块 30和信 号源 50的模块化， 实现产品接驳方便及扩展灵活，相对于具有不同功能的 扩展模块 30和信号源 50来说， 其对应的金手指连接器具有统一规格的接 插端子和接插槽口， 这里的规格不仅指接插端子和接插槽口的电信号的排 布规定相同， 而且指物理尺寸上的尺寸规格统一。
本发明的金手指连接器所传输的信号中， 至少包括电源信号、 控制信 号和音视频信号。接插端子设置在扩展模块 30上， 其可以是由印刷电路板 制作的金手指接插件， 当接插端子插入接插槽口时， 二者上的导电部相互 接触形成电连接， 使得控制信号、 音视频信号以及电源信号传输至扩展模 块 30。接插端子的导电部表面镀金， 具有导电性好、耐磨并抗氧化的特性。 该金手指连接器所传输的信号中由于包括了电源信号， 因此可以实现电视 机处理单元 20通过输入电源信号给扩展模块 30提供扩展模块 30电源，同 时通过控制信号在扩展模块 30与电视机处理单元 20之间建立了控制信息 联络机制以便协调统一地工作， 以在扩展模块 30和电视机处理单元 20之 间传输音视频信号， 通过此构造， 扩展模块 30通过电视机处理单元 20输 入电源信号及控制信号， 有效的做到了节能及操控方便， 满足用户需要。
值得一提的是，该金手指连接器同时也运用于信号源 50与信号转接装 置 40之间，使得多个信号源 50由信号转接装置 40统一供电及控制。这样， 既能完全体现数字电视源显示标准，还能同时收看不同类型的数字电视源， 如数字广播源、 数字播放源及数字网络源等， 也能完成现阶段模拟电视向 数字电视的过渡， 并实现追时可录、 学习娱乐、 网络下载等诸多功能升级 或增加新的功能， 消费者只需选购符合标准化接口的信号源 50即可，从而 以较低而灵活的成本提供了不同功能的信号源 50与信号转接装置 40的组 合使用， 同时该信号源 50也支持单独使用。 由于 "模块化" 的配置灵活的 特点， 也拓展延伸了产品的消费领域， 新技术、 新产品可通过加入新开发 的模块， 加入系统中从而得到应用。
其中， 所述的信号源 50可以为电视机 10扩展功能， 其通过信号转接 装置 40和扩展模块 30与电视机处理单元 20之间进行数据通讯。 信号源 50包括不同功能的模块电路， 实现的功能也有所差异， 例如是： 可以播放 高清视频并可录像的追时可录模块电路， 可以学习英语和打游戏的学习娱 乐模块电路； 可以代替机顶盒播放数字信号的数字电视模块电路， 可以在 网上下载电影的网络下载模块电路等等。 支持信号源 50的电视机 10可以 通过更换不同功能的信号源 50实现不同的功能。 当然， 扩展模块 30本身 也可具备扩展电视机功能模块， 与信号源 50相似。
所述扩展模块 30包括设置在印刷电路板（ Printed Circuit Board , PCB ) 上的功能扩展模块 31、 外部接口、 存储器以及直流转直流（DC/DC ) 电源 34。
功能扩展模块 31是扩展模块 30的核心部件， 包括处理器和各种功能 单元， 其接收由接插端子输入的通讯及控制信号、 音视频信号或由外部接 口输入的数据信号， 然后对上述信号进行执行、 处理、 运算等操作， 将处 理结果或数据通过金手指连接器返回电视机处理单元 20 或输出至与外部 接口相连接的外部设备或外部网络。
外部接口包括串行总线接口， 如 USB接口 321、 读卡器 322、 网络接 口 323、 其他接口 324和扩展接口 325。 USB接口 321用于连接 USB存储 器或其他釆用 USB接口的串行通讯设备。读卡器 322可以读取多种不同类 型的存储卡。 网络接口 323可以连接以太网、 电话网、 有线网、 光纤网等 多种外部网络， 其接口可以是 RJ-45、 RJ-11、 并口， 如 LPT ( Line Print Terminal, 打印终端）口、 SC ( Smart Card )端口， 即光纤端口的一种类型、 同轴端口等多种形式。 其他接口 324 例如是连接硬盘或光驱的 IDE ( Integrated Device Electronics , 集成设备电路） 接口、 ATA ( Advanced Technology Attachment , 高级技术附件） /SATA ( Serial Advanced Technology Attachment , 串行高级技术附件）接口、 鼠标接口、 键盘接口、 游戏手柄 接口、 麦克风接口的特殊接口等多种类型， 扩展接口 325是用于插接信号 传输线与信号转接装置 40连接。
存储器作为功能扩展模块 31的存储数据单元，可以存储音视频信号数 据以及通讯及控制信号数据。 其包括动态存储器 331和静态存储器 332。 动态存储器 331可以是 DDR、 SDR等动态随机存储器 （DRAM )。 静态存 储器 332可以是闪存 （ Flash )。
直流转直流（ DC/DC )34电源接收由接插端子输入的电源信号，如 12 V , 其作为开关电源， 可以对输入的电源信号进行升压或降压操作， 将其转变 为所需的固定电压并输出至功能扩展模块 31、 外部接口和存储器， 以为各 部件提供适合的工作电压。 其中， 该电源信号还可由外部接口中的扩展接 口 325传输至信号转接装置 40。
如图 4所示，本发明的功能扩展模块 31包括诸多功能单元， 这些功能 单元可分为处理单元和接口单元这两大类型。 功能单元包括中央处理器 3111、 流媒体处理单元 3112、 视频处理单元 3113、 音频处理单元 3114和 图形处理单元 3115。接口单元包括静态存储器接口 3116、动态存储器接口 3117、 视频输入输出接口 3118、 音频输入输出接口 3119、 数据通信总线 3120、 外部设备接口 3121、 通用接口 3122、 USB控制器 3123、 网卡控制 器 3124以及 ATA接口 3125。
功能单元负责执行接收的通讯及指令信号， 处理接收的音视频信号。 例如流媒体处理单元 3112负责处理接收的流媒体数据。视频处理单元 3113 负责处理视频信号。 音频处理单元 3114负责处理音频信号。 图形处理单元 3115负责产生节目菜单等程序图形界面， 或者产生学习画面、 娱乐画面、 电子游戏画面等用户界面。中央处理器 3111负责控制所有的功能单元和接 口单元， 并接收和执行输入的通讯及指令信号。
接口单元负责内部、 外部以及各单元之间的数据通信和传输。 例如静 态存储器接口 3116 负责对静态存储器的读写操作。 动态存储器接口 3117 负责对动态存储器的读写操作。视频输入输出接口 3118负责视频信号的输 入和输出操作。 音频输入输出接口 3119负责音频信号的输入和输出操作。 数据通信总线 3120 负责通讯及指令信号以及内部各单元之间的数据通信 操作。 外部设备接口 3121 负责功能扩展模块 31与外部设备之间的通讯和 数据传输。 通用接口 3122不仅支持常用的中断和查询低速数据传输方式， 还支持 DMA ( Direct Memory Access, 直接存储器访问） 高速数据传输方 式， 支持多种 I/O端口类型， 可满足多种应用需求。 USB控制器 3123负责 读取外部 USB数据， 或对外部 USB设备进行数据写入。 网卡控制器 3124 负责与外部网络的通讯和数据传输。 ATA接口 3125负责对读卡器、 硬盘、 光驱等设备进行读写操作。
将扩展模块 30标准化， 使得扩展模块 30可适应更广泛地域和厂家。 另外， 将各功能单元或接口进行标准的模块化设计， 功能配置自由灵活而 且成本相对较低。 产品设计时， 只需根据功能需要， 把一个个功能单元或 接口组合起来就可以了。 这样， 为未来新功能、 新模块、 新接口的加入运 用留有足够的发挥空间，并且将未来模块与己有模块联结无论从接口规格、 软件升级等方面都己作好一切准备。 日后新增功能模块只需使用同样的接 口规格、 符合统一的协议规范就能直接加入。 另外， 整个系统软件可通过 USB接口、 网络接口等多种方式进行更新升级。
下面描述本发明的信号源 50的几种应用类型。
1、数字一体机信号源： 数字一体机信号源的功能信号源包括机顶盒芯 片， 可以接收数字交互电视节目信号。 数字一体机扩展卡的外部接口包括 有线电视接口的 RF接口、 网络接口、 HDMI接口。 釆用数字一体机信号 源， 不用连接机顶盒就可以收看有线数字高清信号。
2、高清可录信号源：高清可录信号源的功能信号源包括视频处理单元、 音频处理单元、 USB控制器和 ATA接口，可以将电视节目转换为视频文件 并存储至闪存 （Flash ) 芯片。 高清可录信号源的外部接口包括 USB接口 和 IDE/ATA/SATA接口，可以连接至 USB存储器或移动硬盘以存储视频文 件。 高清可录信号源还可以包括计时器， 用户可以釆用即时录制或定时录 制录像方式， 随意录制电视节目。 此外， 用户也可以在网上下载 MPEG、 TS ( Transport Stream, 传输流） 等高清视频文件， 然后利用高清可录信号 源进行播放。
3、 学习娱乐信号源： 学习娱乐信号源的功能信号源包括中央处理器和 图形处理单元， 静态存储器存储有配画诗朗诵、 英语学习资料以及电子游 戏等程序， 外部接口包括游戏手柄接口。 中央处理器和图形处理单元可以 根据用户选择来执行静态存储器中存储的程序， 并将执行结果， 包括图形 菜单、 音频信号、 视频信号， 通过电视机 10进行播放。
应当注意， 上述对信号源的描述是为了使本领域技术人员更易于理解 本发明， 本发明的信号源不局限于上述结构， 各种新功能单元和接口单元 均可加入信号源中， 本领域技术人员亦可根据需求对信号源的功能单元和 接口单元以及其他功能模块进行组合设计。
如图 5所示， 本发明信号转接装置 40及扩展模块 30连接的电视机 10 包括电视机处理单元 20、 电源模块 21 以及 LCD面板 22。 其中电源模块 21电连接电视机处理单元 20和 LCD面板 22 , 为其提供工作电压， 电源模 块 21也可以整合入电视机处理单元 20内部。
电视机处理单元 20是电视机 10的主板，其设置在电视机 10内部， 其 包括电视机机芯模块 200、 音频输出 201、 存储器等功能模块。 该电视机机 芯模块 200可以通过电视机 10 的多种外部接口接收不同格式的音视频信 号， 这些信号可以是模拟信号， 也可以是数字信号。 这些信号可包括接收 射频信号 （RF )、 复合视频广播信号 （Composite Video Broadcast Signal, CVBS )、亮度 /色度信号 ( Y/C )、 色差信号 ( Y/Pb/Pr )、 VGA ( Video Graphics Array )信号、 DVI ( Digital Visual Interface )信号、 HDMI ( High Definition Multimedia Interface )信号以及其他现有的各种音视频信号。并将音视频信 号进行处理后再输出至电视的显示面板和音响设备。 电视机机芯模块 200内部包括微处理器、 图形处理器、视频处理单元、 音频处理单元、解调器、解码器、数据通讯总线、 10接口等多个功能单元。 其可以通过电视机 10的多种外部接口不同格式的音视频信号，这些信号可 以是模拟信号， 也可以是数字信号。 这些信号可以包括 CVBS信号、 Y/C 信号、 Y/Pb/Pr信号、 DVI信号、 HDMI信号、 TV信号和 VGA信号等音 视频模拟信号或数字信号。 电视机处理单元 20通过外设 10接口与外部设 备连接并通讯，其通讯可以釆用通用 I/O接口（General Purpose 10 Interface, GPIO)、 脉宽调制 （Pulse Width Modulation, PWM )、 通用异步收发器 等多种方式进行。 电视机处理单元 20对接收到不同格式的信号进行处理， 将视频信号转变为 LVDS信号（ Low Voltage Differential Signaling, 低电压 差动信号） 并输出至 LCD面板 22以显示图像， 将音频信号输出至音频输 出 201以产生声音。
音频输出 201用于将电信号形式的音频信号转变为空气振动形式的声 音信号， 其可以是喇叭、 扬声器等器件。
存储器作为电视机处理单元 20的存储数据单元，可以存储音视频信号 数据以及通讯及控制信号数据。 其包括动态存储器 2021 和静态存储器 2022。 动态存储器 2021是按需分配的存储器， 一般用来存储函数的形参、 自动变量或运行时分配的数据、 指令等， 其可以是 DDR、 SDR等动态随机 存储器 （DRAM )。 静态存储器 2022是分配固定的存储器， 一般用来存储 全局变量或编译前的数据、 指令等， 其可以是闪存 （ Flash )。
所述信号转接装置 40包括一 MCU ( Micro Controller Unit, 微控制单 元）411、一普通电源 412、一 12V电源 413和第一、第二音视频处理单元， 所 述 MCU411与信号转接装置 40、扩展模块 30、电视机处理单元 20电连接， 并与电视机处理单元 20可交互通讯控制信号， 同时， 电视机处理单元 20 还可以通过向扩展模块 30提供电源信号， 由扩展模块 30将电源信号发送 给信号转接装置 40 的 MCU411 , 以给该 MCU411 供电， 当然， MCU411 也可直接由所述信号转接装置 40中的的普通电源 412经转换电流电压后供 电； 所述 MCU411还可向所述第一、 第二音视频处理单元传输控制信号， 以控制该第一、 第二音视频处理单元通过接口向电视机处理单元 20 传输 YPBPR/RGB信号和音视频信号； 另外，该 MCU411可向所述普通电源 412 和所述 12V电源 413传输电源开关信号，以控制该普通电源 412产生该 12V 电源 413 , 并将 12V电源信号传输至所述信号源 50 , 给所述信号源 50供 电； 以及， 该 MCU411可向所述信号源 50传输检测、 控制和通讯信号， 并通过该检测信号检测信号源 50的是否存在， 以及存在的信号源 50的类 型，通过该控制信号控制信号源 50工作，和通过该通讯信号与所述电视机 处理单元 20确定需要工作的信号源 50。
在本发明最佳实施方式中， 所述信号源 50包括第一信号源 501、 第二 信号源 502、 第三信号源 503、 第四信号源 504。 其中， 所述第一至第四信 号源 501、 502、 503、 504 , 是通过信号转接装置上设置的 12V 电源 413 的 12V电源信号进行供电的， 其中， 所述 12V电源 413可由外接 AC220V 普通电源 412的所述普通电源 412经过 AC-DC (交流转直流）、 DC-DC (直 流转直流）后供给。
所述第一至第四信号源 501、 502、 503、 504在得到所述 12V电源信 号并通电后， 可向所述第一音视频处理单元 414a输入 YPBPR/RGB信号， 并通过第一音视频处理单元 414a将该 YPBPR/RGB信号通过接口输入至所 述电视机处理单元 20; 所述第一至第四信号源 501、 502、 503、 504在得 到所述 12V电源信号并通电后， 可向所述第二音视频处理单元 414b输入 音视频信号，并通过第二音视频处理单元 414b将该音视频信号通过接口输 入至所述电视机处理单元 20; 另外， 该第一至第四信号源 501、 502、 503、 504还可通过该接口接收所述电视机处理单元 20发出的通讯信号和 TV输 出音视频信号， 并可通过该接口向电视机处理单元 20传输行场同步信号。
在电视机 10通过所述信号转接装置 40连接扩展模块 30对电视机处理 单元 20进行扩展时， 结合图 5、 如图 6所示： 601、 首先将扩展模块 30插入电视机 10 , 并与电视机处理单元 20电 连接， 再将信号转接装置 40通过接口和信号传输线或无线与扩展模块 30 连接， 此时， 电视机处理单元 20经扩展模块 30或普通电源 412可向该信 号转接装置 40内的 MCU414传输电源信号，使 MCU414获电并开始工作。
602、 MCU414向 12V电源 413发出电源开关信号。
603、 12V电源 413产生 12V电源至信号源 50。
604、 MCU可通过输入检测信号至信号源 50 , 以确定该信号源 50是 否存在。
605、 如果经确定有， 则 MCU414通过信号转接源 30向所述电视机处 理单元 20交互通讯控制信号， 确定在多个信号源 50同时存在的情况下， 需要工作的信号源 50。
606、 之后， MCU414对需要工作的信号源 50发出控制信号， 启动该 信号源 50工作。
607、 此时， MCU414检测该信号源 50信号输出的类型， 在本发明优 选的实施方式中，插入检测电路输出的标识信号与信号源 50的功能类型相 对应， 其不仅表示信号源 50 已插入信号转接装置 40并与 MCU电连接， 还进一步向 MCU告知了信号源 50的功能类型， 如数字一体机信号源、 高 清可录信号源或学习娱乐信号源等。 例如， 标识信号可以釆用一组二进制 码来表示不同功能类型的信号源 50。 并与电视机处理单元 20交互通讯控 制信号， 并通过该通讯控制信号内容控制第一、 第二音视频处理单元， 将 信号源 50输入至第一、第二音视频处理单元的 YPBPR/RGB信号和音视频 信号输入至电视机处理单元 20 , 并由该处理单元处理后，播放该信号源 50 内容。
值得一提的是：信号源 50输出音视频类型信号标识至电视机处理单元 20 , 音视频类型信号标识可以通过一组二进制码来表示由外部接口输入扩 展卡的信号类型， 这些信号包括射频信号 （RF )、 复合视频广播信号 ( Composite Video Broadcast Signal, CVBS ), 亮度 /色度信号 （ Y/C )、 色差 信号 （ Y/Pb/Pr )、 VGA ( Video Graphics Array )信号、 DVI ( Digital Visual Interface )信号、 HDMI ( High Definition Multimedia Interface )信号以及其 他现有的各种音视频信号。
608、 电视机处理单元 20收到标识信号后， 切换对应的显示通道。
609、 MCU414控制音视频处理单元，通过信号扩展源输出信号到电视机 处理单元 20, 电视机 10开始播放信号源 50输出信号内容。 电视机处理单元 20和信号源 50之间通过信号转接装置 40和扩展模块 30 以 UART/IIC/IR 等通讯方式进行相互的信号控制与通信。
此后，用户可以通过遥控器选择电视机 10是在普通电视接收模式还是 信号源模式下收看节目。 遥控器发出的红外指令经电视机 10接收解码后， 可以先传输至电视机处理单元 20, 再经电视机处理单元 20处理后发出控 制指令， 经由扩展模块 30与信号转接装置 40交互通讯控制信号， 再由金 手指连接器传输至信号源 50 , 以进行对应操作； 当然， 由于信号源 50中 具有可以接收 UART/IIC/IR指令的外部设备接口， 因此遥控器也可以与信 号源 50之间直接进行数据通讯， 以控制其操作。使得以一个遥控器即可控 制电视机 10、 扩展模块 30、 信号转接装置 40和多个信号源 50的目的， 方 便用户操控电视机 10。
尽管为示例目的， 已经公开了本发明的优选实施方式， 但是本领域的 普通技术人员将意识到， 在不脱离由所附的权利要求书公开的本发明的范 围和精神的情况下， 各种改进、 增加以及取代是可能的。

Claims

权 利 要求 书
1. 一种扩展模块， 连接于电视机和信号源之间， 使所述信号源与所述电 视机交互媒体信号， 其特征在于， 所述扩展模块包括一第一接口和一第二接 口， 所述第一接口与所述电视机电连接并交互通信， 所述第二接口与所述信 号源电性连接， 并输出电源信号及控制信号至所述信号源。
2. 根据权利要求 1所述的扩展模块， 其特征在于， 所述扩展模块可拆装 地与所述电视机连接。
3. 根据权利要求 1或 2所述的扩展模块， 其特征在于， 所述扩展模块与 所述信号源之间设有一用于转接信号源的信号转接装置， 所述扩展模块输出 电源信号及控制信号至所述信号转接装置。
4. 根据权利要求 3所述的扩展模块， 其特征在于， 所述信号转接装置连 接至少一个信号源并输出电源信号及控制信号给所述信号源。
5. 根据权利要求 4所述的扩展模块， 其特征在于， 所述信号源可拆装的 连接所述信号转接装置。
6. 根据权利要求 1所述的扩展模块， 其特征在于， 所述扩展模块还包 括流媒体处理单元、视频处理单元、音频处理单元或图形处理单元之一。
7. 一种电视机， 包括一连接信号源的扩展模块， 其特征在于： 所述扩展 模块包括一第一接口和一第二接口， 所述第一接口与所述电视机电连接并交 互通信， 所述第二接口与所述信号源电性连接， 并输出电源信号及控制信号 至所述信号源。
8. 根据权利要求 7所述的电视机， 其特征在于， 所述扩展模块可拆装地 与所述电视机连接。
9. 根据权利要求 7或 8所述的电视机， 其特征在于， 所述扩展模块与所 述信号源之间设有一用于转接信号源的信号转接装置， 所述扩展模块输出电 源信号及控制信号至所述信号转接装置。
10. 根据权利要求 9所述的电视机， 其特征在于， 所述信号转接装置连 接至少一个信号源并输出电源信号及控制信号给所述信号源。
11. 根据权利要求 10所述的电视机， 其特征在于， 所述信号源可拆装的 连接所述信号转接装置。
12. 根据权利要求 7所述的电视机， 其特征在于， 所述扩展模块还包括 流媒体处理单元、 视频处理单元、 音频处理单元或图形处理单元之一。
PCT/CN2009/073296 2009-06-01 2009-08-17 扩展模块及具有该扩展模块的电视机 WO2010139135A1 (zh)

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