CN2631157Y - Video output connector of digital image equipment - Google Patents
Video output connector of digital image equipment Download PDFInfo
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- CN2631157Y CN2631157Y CNU032610742U CN03261074U CN2631157Y CN 2631157 Y CN2631157 Y CN 2631157Y CN U032610742 U CNU032610742 U CN U032610742U CN 03261074 U CN03261074 U CN 03261074U CN 2631157 Y CN2631157 Y CN 2631157Y
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- 238000006243 chemical reaction Methods 0.000 claims abstract description 7
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- 238000004088 simulation Methods 0.000 abstract description 4
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Abstract
The utility model discloses a video output connector of digital image equipment, include: the system comprises a control module for decoding and system transaction management, a communication interface module connected with external digital equipment and used for information interaction, a conversion module for converting decoded digital signals into analog signals and outputting the analog signals to video equipment, and a keyboard for inputting user control commands; the control module is connected with the communication interface module, the conversion module and the keyboard through a data bus and a control bus respectively. The utility model discloses digital information among the digital image equipment that will not have the video output function converts the video signal of simulation to TV set or other video equipment, utilizes information such as characters, image among TV set or other video equipment's the display screen display digital image equipment, provides economical and practical information display way for the user of vast digital image equipment.
Description
Technical field
The utility model relates to a kind of connector, and especially a kind of digital information that is used for digital device is converted to analog information and is transferred to the connector that shows in the video equipment, belongs to technical field of electronic equipment.
Background technology
Along with universalness, the family oriented of computer, digital image device, most enterprise, family have all had computer and digital image device, and this digital image device comprises: digital camera, digital code camera, mobile phone capable of taking pictures etc.In order to work or the needs of amusement, people usually need information such as the digital picture in the digital image device, literal, form are shown by certain medium, common way is by data wire digital image device and computer to be coupled together, and the message transmission that will show by this data wire is in computer.
But for being arranged, digital image device do not have not show needed information because there being computer for the user of computer.At this problem, some digital device manufacturers are according to the situation that generally all has video equipment in family, the enterprise, in digital device, correspondingly increased and to have utilized video equipment to show the function of the digital information of its storage inside, as the high-grade digital camera of part, directly described high-grade digital camera is connected with television set by data wire, just the picture of wherein storing can be transferred in the television set and shows.But with regard to price, the digital device with this kind function does not have the digital device of this function to want much expensive relatively, can not be commonly used.
Thus, realize a kind ofly, will bring bigger convenience to the user of digital image device with economical by utilizing video equipment to show the connector of the digital information of storing in the digital device.
The utility model content
The purpose of this utility model is to propose a kind of video output connector of digital image device, by this connector the digital information in the digital image device is converted to analog information and outputs in the video equipment and show, make the digital image device that does not have the video output function also can show required information by video equipments such as television sets.
The purpose of this utility model is achieved by the following technical solution:
A kind of video output connector of digital image device, comprise: be used to decode and the control module of system transaction management, be connected, be used for the communication interface modules of information interaction with the external digital vision facilities, be used for that decoded digital signal is converted to analog signal and export to the modular converter and the keyboard of television set, wherein, the data-signal of control module, control signal are connected with communication interface modules, modular converter and keyboard by data/address bus, control bus respectively.
Described control module can be CPU (central processing unit, central processing unit), also can be MCU (Microprocessor Control Unit, microcontroller), its data-signal is connected with communication interface modules, modular converter, keyboard respectively by data/address bus, is used for the data between mutual control module and communication interface modules or modular converter or the keyboard; The Control on Communication signal of CPU or MCU is connected with communication interface modules by control bus, is used for gating communication interface modules when needs are communicated by letter, and makes its work; The digital-to-analogue conversion control signal of CPU or MCU is connected with modular converter by control bus, is used for gating modular converter when needs carry out data transaction, modular converter is received from the next data of control module transmission, and make corresponding processing; The interrupt request singal of CPU or MCU is connected with keyboard by control bus, when the user passes through the keyboard input command, the response signal of keyboard is input to the interrupt requests end of CPU or MCU by control bus, the interrupt requests end of CPU or MCU is sent this signal into control module, control module receives the data that keyboard is sent here according to this signal, judge the command type that the user imports according to these data, command type is made corresponding processing according to this.
Described communication interface modules comprises communication interface control chip and communication interface, wherein, communication interface is USB (Universal Serial Bus, USB) interface or IEEE1394 interface or RS232 serial communication interface or RS485 serial communication interface or parallel communication interface, this communication interface is connected with the external digital vision facilities, the data-signal of this communication interface is connected with the data input signal of communication interface control chip, the data output signal of communication interface control chip is connected with the data-signal of control module by data/address bus, and the control signal of communication interface control chip is connected with the Control on Communication signal of control module by control bus; Communication interface is given communication control chip with the transfer of data in the digital image device, and control module is by control signal gating communication interface control chip, and the transfer of data that the communication interface control chip reads communication interface is in control module.
This connector also comprises the display of the Word message that is used to show from the digital image device input, image data file name, equipment state, the data-signal of described display is connected with control module by data/address bus, and the control signal of display is connected with the display control signal of control module by control bus; Described display can be LCD (Liquid Crystal Display, LCDs), can be CRT (cathode-ray tube, cathode ray tube) display, can be LED (light-emitting diode, Light-Emitting Diode) display.
CPU or MCU expansion have memory, CPU or MCU are connected with memory by data/address bus, address bus, control bus, here, described memory is static memory (SRAM) or synchronous dynamic random access memory (SDRAM) or flash memory (Flash memory).
In sum, by this connector, the video information that will not have digital information in the digital device of video output function to convert simulation to outputs on the video equipment, utilize the display screen of video equipment to show information such as literal in the digital device, image, for the user of vast digital image device provides economical and practical information to show approach.
Description of drawings
Fig. 1 is a theory diagram of the present utility model;
Fig. 2 is the circuit theory diagrams of the control module of the utility model one embodiment;
Fig. 3 is the circuit theory diagrams of the memory of the utility model one embodiment;
Fig. 4 is the circuit theory diagrams of the communication interface of the utility model one embodiment;
Fig. 5 is the circuit theory diagrams of the D/A converter module of the utility model one embodiment;
Fig. 6 is the keyboard circuit schematic diagram of the utility model one embodiment;
Fig. 7 is the display circuit schematic diagram of the utility model one embodiment;
Fig. 8 is the circuit theory diagrams of another embodiment of the utility model;
Fig. 9 is the circuit theory diagrams of the serial communication interface of another embodiment of the utility model.
Embodiment
Referring to Fig. 1, be theory diagram of the present utility model, the video output connector 20 of this digital image device comprises the control module 201 that is used to decode with the system transaction management, be connected, be used for the communication interface modules 202 of information interaction with external digital vision facilities 10, be used for that decoded digital signal is converted to analog signal and export to the modular converter 203 of video equipment 30, the memory 204 that is connected with control module 201 is used for interactive display 205, keyboard 206.Wherein, communication interface modules 202 is connected to form by communication interface and communication interface control chip, communication interface is connected with external digital vision facilities 10, the communication interface control chip is connected with control module 201, communication interface is with the digital information in the digital image device 10, as Word message, image information etc., be transferred to control module 201, software decode through control module 201 stored, be transferred to modular converter 203 again, modular converter 203 will be converted to the vision signal of simulation through the desire display message of decoding, export to video equipment 30, and 30 of video equipments show on display screen desires display message.The data-signal of keyboard 206, control signal are connected with data-signal, the interrupt request singal of control module 201 by data/address bus, control bus, be used to receive user instruction, and user instruction exported to control module 201, control module 201 is according to the user instruction that receives, finish function corresponding, as: read the Word message stored in the external digital vision facilities, digital image information etc. by communication interface modules 202, with the digital image information decoding of compression, and be transferred to modular converter 203.Display 205 is connected with control module 201, be used for showing the external digital vision facilities stores for information about, entire equipment state etc.
Control module 201 can be CPU, also can be MCU; Communication interface can be a USB interface, can be the IEEE1394 interface, can be the RS232 serial communication interface, can be the RS485 serial communication interface, can be parallel communication interface; Memory 204 can be SRAM, can be SDRAM, can be Flash memory; Display 205 can be LCD display, can be CRT monitor, can be light-emitting diode display.
Below by specific embodiment the utility model is further described:
Embodiment one, is that example is described in detail the utility model with the TV out connector of digital camera.
In the present embodiment, digital image device adopts digital camera, and video equipment adopts television set, and control module adopts MCU, memory, keyboard, the LCD display of usb communication interface module, D/A converter module, MCU expansion.Wherein, the circuit theory diagrams of MCU as shown in Figure 2, the circuit theory diagrams of memory as shown in Figure 3, memory is respectively two SDRAM, a slice Flash memory, it is connected with address wire, the data wire of MCU U1 respectively with data wire by address wire separately, and SDRAM is connected with the corresponding control line of MCU respectively with Flashmemory control line separately, the annexation of memory and MCU by network label sign, is seen Fig. 2, Fig. 3 in the drawings.
Referring to Fig. 4, circuit theory diagrams for the present embodiment communication interface, the usb communication interface module comprises USB control chip U7, USB interface J1, the J2 that is used for serial data and parallel data conversion, the data terminal of USB interface J1, J2 is connected with the data input pin of USB control chip U7, the data terminal of USB control chip U7 is connected with the data terminal of MCU, and the control end of USB control chip U7 is connected with the USB interface control end of MCU.USB interface J1 is a USB holotype interface, is used for linking to each other with the USB slave unit, be connected with digital camera in the present embodiment, J2 be USB from the pattern interface, be used for linking to each other, as USB control interface of computer etc. with the USB main equipment.By USB control chip U7 the pictorial information that the digital camera desire shows is transferred among the control module MCU.
Referring to Fig. 5, circuit theory diagrams for the present embodiment D/A converter module, in the present embodiment, D/A converter module adopts the ADV7177 chip U8 of AD company, its data terminal DV_D0-DV_D15 is connected with the data terminal of MCUU1, its control end is connected with the control end of MCU U1, output DAC_A, the DAC_B of analog signal, DAC_C are connected with splicing ear J5, J6, J7 respectively, wherein, splicing ear J6, J7 are combined into interface JP1, and interface JP1 is connected with vision signal (S-Video) input of television set; Described analog-digital chip ADV7177 has multiple translative mode, and splicing ear J5, J6, J7 can be used for exporting R, G, the trichromatic analog output signal of B.D/A converter module U8 receives the digital signal through decoding that MCU U1 transmission comes, and the vision signal that is converted into simulation is transferred in the television set by interface JP1, demonstrates the picture in the digital camera.
Referring to Fig. 6, keyboard circuit schematic diagram for present embodiment, this keyboard is one 4 * 4 keyboard, the GPIO0-GPIO3 of the input and output terminal of MCU U1 is respectively 4 row of this keyboard, GPIO4-GPIO7 is respectively 4 row, and the signal of GPIO4-GPIO7 output is connected with the interrupt signal of MCU U1 as the interrupt request singal of keyboard after through an AND circuit U2A.When button was pressed, AND circuit U2A sent interrupt requests to MCU U1, and MCU U1 is according to the implication difference of request, and working procedure is handled accordingly.
In the present embodiment, display is a LCD display, and its circuit theory comprises display U3 as shown in Figure 7, and its model is GXM-12864, and bus keeps chip U2, and its model is 74LS573.The data/address bus of U3 keeps chip U2 by bus, links to each other with the data/address bus of MCU U1; Asynchronous read and write signal AOE, the AWE of MCU U1 are connected with the enable signal of U3 through a NAND gate U10; Control signal directly links to each other with the LCD control signal of MCU U1.Display U3 is used to show filename, equipment state of the Word message that reads from digital camera, digital picture etc.
Embodiment two
Referring to Fig. 8, in the present embodiment, control module adopts MCU U1, and communication interface modules adopts RS232 serial communication interface module, and D/A converter module adopts the D/A converter module that has screen display function, and, MCU U1 extended menory, keyboard.
The circuit of MCU U1 extended menory, keyboard is identical with the circuit of embodiment one, is not giving unnecessary details at this; In the present embodiment, do not need special hardware display module to show the filename, equipment state etc. of Word message, the digital picture of external digital vision facilities, but reach the purpose that shows this type of information by software design, that is, the information that can show utilizes OSD (On ScreenDsiplay) function of D/A converter module directly to be presented on the screen of video equipment.
Referring to Fig. 9, schematic diagram for RS232 serial communication interface module, serial communication interface chip U9 finishes the conversion of interface circuit voltage, the input of its serial data links to each other with 9 pin RS232 connector P1, the output of serial data is connected with the serial line interface of MCU, and RS232 connector P1 is connected with the digital image device of outside.RS232 connector P1 is transferred to the data of the digital image device of outside among the MCU U1 by serial communication interface chip U9, these data output in the D/A converter module after decoding in MCU U1, view data wherein is through after the digital-to-analogue conversion, output in the video equipment and show, wherein, information such as the Word message of external digital vision facilities, the filename of digital picture, equipment state are not to show by specific display, but utilize OSD (On ScreenDsiplay) function of D/A converter module directly to be presented on the display screen of video equipment.
It should be noted that at last: above embodiment is only unrestricted in order to the explanation the technical solution of the utility model, although the utility model is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can make amendment or be equal to replacement the technical solution of the utility model, and not breaking away from the spirit and scope of technical solutions of the utility model, it all should be encompassed in the middle of the claim scope of the present utility model.
Claims (7)
1. the video output connector of a digital image device, it is characterized in that: this connector comprises: be used to decode with the control module of system transaction management, be used for the external digital vision facilities be connected and carry out information interaction communication interface modules, be used for that decoded digital signal is converted to analog signal and export to the modular converter of video equipment and be used to import the keyboard of user control command, wherein, the data-signal of control module, control signal are connected with communication interface modules, modular converter and keyboard by data/address bus, control bus respectively.
2. the video output connector of digital image device according to claim 1, it is characterized in that: described control module is CPU or MCU, its data-signal is connected with communication interface modules, modular converter, keyboard respectively by data/address bus; The Control on Communication signal of CPU or MCU is connected with communication interface modules by control bus; The digital-to-analogue conversion control signal of CPU or MCU is connected with modular converter by control bus; The interrupt request singal of CPU or MCU is connected with keyboard by control bus.
3. the video output connector of digital image device according to claim 1 and 2, it is characterized in that: described communication interface modules comprises communication interface control chip and communication interface, wherein, the data-signal of communication interface is connected with the data input signal of communication interface control chip, the data output signal of communication interface control chip is connected with the data-signal of control module by data/address bus, and the control signal of communication interface control chip is connected with the Control on Communication signal of control module by control bus.
4. the video output connector of digital image device according to claim 3, it is characterized in that: described communication interface is USB interface or IEEE1394 interface or RS232 serial communication interface or RS485 serial communication interface or parallel communication interface.
5. the video output connector of digital image device according to claim 1, it is characterized in that: this connector also comprises display, the data-signal of described display is connected with control module by data/address bus, and the control signal of display is connected with the display control signal of control module by control bus.
6. the video output connector of digital image device according to claim 5, it is characterized in that: described display is LCD display or CRT monitor or light-emitting diode display.
7. according to the video output connector of claim 1 or 2 or 4 or 5 or 6 described digital image device, it is characterized in that: it is SRAM or SDRAM or Flash memory that described control module expansion has memory, described memory.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU032610742U CN2631157Y (en) | 2003-08-08 | 2003-08-08 | Video output connector of digital image equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU032610742U CN2631157Y (en) | 2003-08-08 | 2003-08-08 | Video output connector of digital image equipment |
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| CN2631157Y true CN2631157Y (en) | 2004-08-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNU032610742U Expired - Fee Related CN2631157Y (en) | 2003-08-08 | 2003-08-08 | Video output connector of digital image equipment |
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| CN (1) | CN2631157Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101002365B (en) * | 2004-08-10 | 2011-03-30 | 辉达公司 | VGA connector with integral filter |
| CN110686775A (en) * | 2019-09-23 | 2020-01-14 | 中国电子科技集团公司第十一研究所 | Digital-to-analog conversion method and circuit |
-
2003
- 2003-08-08 CN CNU032610742U patent/CN2631157Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101002365B (en) * | 2004-08-10 | 2011-03-30 | 辉达公司 | VGA connector with integral filter |
| CN110686775A (en) * | 2019-09-23 | 2020-01-14 | 中国电子科技集团公司第十一研究所 | Digital-to-analog conversion method and circuit |
| CN110686775B (en) * | 2019-09-23 | 2022-03-11 | 中国电子科技集团公司第十一研究所 | Digital-to-analog conversion method and circuit |
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| CF01 | Termination of patent right due to non-payment of annual fee |