CN2419770Y - Digital vedio frequency processor with analog color component input - Google Patents
Digital vedio frequency processor with analog color component input Download PDFInfo
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- CN2419770Y CN2419770Y CN 00213434 CN00213434U CN2419770Y CN 2419770 Y CN2419770 Y CN 2419770Y CN 00213434 CN00213434 CN 00213434 CN 00213434 U CN00213434 U CN 00213434U CN 2419770 Y CN2419770 Y CN 2419770Y
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- color component
- switch controller
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Abstract
The utility model provides a digital video processor with the function of analog color component input, which comprises three impedance matching devices, a digital decoder, and an analog-digital conversion and switching controller. The utility model is characterized in that Y signals in analog color component signals are sent to a digital decoding chip on one hand to generate control signals and are sent to the analog-digital conversion and switching control circuit together with Cb and Cr signals in the analog color component signals on the other hand; the signals are sent to a rear-stage signal processing unit to process after switched. Consequently, the requirement that the analog color component input is compatible in the digital video processor is realized. The circuit design of the utility model is simple; the cost of the whole processor is reduced.
Description
The utility model relates to a kind of digital video processing apparatus, is a kind of digital video processing apparatus with simulation color component input function specifically.
Video equipment has two kinds usually, a kind of is the video equipment that adopts the simulation process technology, all adopt analogue technique from input signal to the entire process process, what another kind was more advanced is the video equipment that adopts digital processing technology, in this equipment, the analog video signal of input is at first decoded by digital decoder, produce the vision signal of digital form, exporting these digital video signals with specified format to when afterwards level is handled, and producing clock and the synchronizing signal that is used for system's control, digital video signal is reduced into analog signal and exports to display unit the most at last.
Present development along with technology, high-quality signal source constantly occurs, had simulation color component YCbCr output interface as signal sources such as DVD, in the video equipment that adopts the simulation process technology, can realize the compatibility of simulation color component signal easily, but in the video equipment that adopts digital processing technology, because the simulation color component signal of synchronous control signal and input does not match, be difficult to realize the compatibility of simulation color component input.
Before the utility model was made, the compatible of simulation color component input relied on complicated circuit to realize cost height, poor reliability usually in the digital video processing apparatus.
The purpose of this utility model provides a kind of digital video processing apparatus with simulation color component input function, utilize the synchronizing signal processing capacity of digital decoder in the digital video processing apparatus, adopt ball bearing made using to realize the compatibility of simulation color component input, reduce cost, simplify production technology, improve the reliability of integrated circuit.
The purpose of this utility model is achieved through the following technical solutions:
A kind of digital video processing apparatus with simulation color component input function, comprise: signal input circuit, digital decoder, analog-to-digital conversion and switch controller, the Y-signal that comprises synchronically controlling information among the simulation color component signal YCbCr is received the input A1 of signal input circuit middle impedance adaptation, the output B1 of impedance matching box divides two-way, one the road is connected to the video signal input terminal mouth of digital decoder, another road is connected to the video signal input terminal mouth of analog-to-digital conversion and switch controller, Cb signal among the simulation color component signal YCbCr and Cr signal are connected respectively to the two input A2 of two impedance matching boxs in addition in the signal input circuit, A3, the output B2 of these two impedance matching boxs, B3 is connected respectively to the analog video signal input port of analog-to-digital conversion and switch controller, the digital video signal output port of digital decoder is connected to the digital video signal input port of analog-to-digital conversion and switch controller, the control signal of digital decoder output is connected to the signal input end mouth of analog-to-digital conversion and switch controller, the corresponding port that the digital video signal of analog-to-digital conversion and switch controller output and control signal are connected to back stages of digital signal processing unit.
Three impedance matching boxs in the described signal input circuit all are triode emitter-base bandgap grading output amplifiers, its circuit is identical, input A1, A2, A3 connects capacitor C 1 respectively, C2, C3, capacitor C 1, C2, the other end of C3 is connecting resistance R4 respectively, R8, R12, resistance R 4, R8, the other end each minute three tunnel of R12, one tunnel difference connecting resistance R2, R6, R10, resistance R 2, R6, another termination stabilized voltage power supply E1 of R10, another road meets resistance to earth R3 respectively, R7, R11, also have one the tunnel to meet triode V1 respectively, V2, the base stage of V3, triode V1, V2, the collector electrode of V3 meets stabilized voltage power supply E1, triode V1, V2, emitter each minute two tunnel of V3, one the tunnel meets resistance to earth R1 respectively, R5, R9, another road output.
Described digital decoder is chip VPC3210A, and analog-to-digital conversion and switch controller are chip CIP3250.
Advantage of the present utility model and good effect are: utilized the Synchronous Processing function that digital decoder had in the digital video processing apparatus dexterously, circuit design is simple, only with a slice integrated circuit and a small amount of discrete component, the function that has needed the large amount of complex components and parts just can finish before just having finished, improved the overall quality of product, reduce the complete machine cost, improved the complete machine reliability during operation.
Below in conjunction with accompanying drawing the utility model is described in further detail.
Fig. 1 is the circuit diagram of simulation color component importation in the digital video processing apparatus of an embodiment of the utility model.
The Y-signal that includes synchronically controlling information among the figure in the simulation color component signal is divided into two-way through the prime impedance matching box, one the road and the simulation color component signal in Cb, Cr signal deliver to analog-to-digital conversion and control switching circuit CIP3250 together, digital decoding chip VPC3210A is delivered on another road, Y-signal is handled through VPC3210A, produce and synchronous control and the synchronizing signal of simulation color component, utilize this signal that whole system is controlled the just operate as normal of feasible system.The YCbCr signal of delivering to CIP3250 carries out analog-to-digital conversion in CIP3250, generate the digital signal that is consistent with system requirements, select to switch with the digital video signal that is input to CIP3250 then, digital signal after the switching is delivered to back level signal processing unit and is handled, thereby has realized the requirement of compatible simulation color component input in digital video processing apparatus.
The input stage of simulation color component has adopted triode emitter-base bandgap grading output amplifier, can reduce the electric current that amplifier is drawn signal source, reduce of the influence of back level simultaneously, improve carrying load ability, in whole system, mainly play impedance matching multiplication factor.
Claims (3)
1, a kind of digital video processing apparatus with simulation color component input function, comprise: signal input circuit (1), digital decoder (2), analog-to-digital conversion and switch controller (3), it is characterized in that: the Y-signal that comprises synchronically controlling information among the simulation color component signal YCbCr is received the input end A1 of signal input circuit (1) middle impedance adaptation (4), the output B1 of impedance matching box (4) divides two-way, one the road is connected to the video signal input terminal mouth of digital decoder (2), another road is connected to the video signal input terminal mouth of analog-to-digital conversion and switch controller (3), Cb signal among the simulation color component signal YCbCr and Cr signal are connected respectively to signal input circuit (1) middle impedance adaptation (5,6) input A2, A3, impedance matching box (5,6) output B2, B3 is connected respectively to the analog video signal input port of analog-to-digital conversion and switch controller (3), the digital video signal output port of digital decoder (2) is connected to the digital video signal input port of analog-to-digital conversion and switch controller (3), the control signal of digital decoder (2) output is connected to the signal input end mouth of analog-to-digital conversion and switch controller (3), and the digital video signal of analog-to-digital conversion and switch controller (3) output and control signal are connected to the corresponding port of back stages of digital signal processing unit.
2, digital video processing apparatus with simulation color component input function according to claim 1, it is characterized in that: in the described signal input circuit (1), impedance matching box (4,5,6) all be triode emitter-base bandgap grading output amplifier, its circuit is identical, input A1, A2, A3 connects capacitor C 1 respectively, C2, C3, capacitor C 1, C2, the other end of C3 is connecting resistance R4 respectively, R8, R12, resistance R 4, R8, the other end each minute three tunnel of R12, one tunnel difference connecting resistance R2, R6, R10, resistance R 2, R6, another termination stabilized voltage power supply E1 of R10, another road meets resistance to earth R3 respectively, R7, R11, also have one the tunnel to meet triode V1 respectively, V2, the base stage of V3, triode V1, V2, the collector electrode of V3 meets stabilized voltage power supply E1, triode V1, V2, emitter each minute two tunnel of V3, one the tunnel meets resistance to earth R1 respectively, R5, R9, another road output.
3, the digital video processing apparatus with simulation color component input function according to claim 1 and 2 is characterized in that: described digital decoder (2) is chip VPC3210A, and analog-to-digital conversion and switch controller (3) are chip CIP3250.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00213434 CN2419770Y (en) | 2000-01-30 | 2000-01-30 | Digital vedio frequency processor with analog color component input |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00213434 CN2419770Y (en) | 2000-01-30 | 2000-01-30 | Digital vedio frequency processor with analog color component input |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2419770Y true CN2419770Y (en) | 2001-02-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00213434 Expired - Fee Related CN2419770Y (en) | 2000-01-30 | 2000-01-30 | Digital vedio frequency processor with analog color component input |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2419770Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102724383A (en) * | 2012-05-23 | 2012-10-10 | 常州芯奇微电子科技有限公司 | Multi-format video signal processing device |
| CN107926096A (en) * | 2015-07-01 | 2018-04-17 | 克利公司 | For modulating the control circuit of simulation dim command signal |
-
2000
- 2000-01-30 CN CN 00213434 patent/CN2419770Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102724383A (en) * | 2012-05-23 | 2012-10-10 | 常州芯奇微电子科技有限公司 | Multi-format video signal processing device |
| CN107926096A (en) * | 2015-07-01 | 2018-04-17 | 克利公司 | For modulating the control circuit of simulation dim command signal |
| CN107926096B (en) * | 2015-07-01 | 2020-12-04 | 理想工业照明有限责任公司 | Control circuit for modulating analog dimming command signal |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |