CN1036107C - A camera capable of interfacing with a computer - Google Patents
A camera capable of interfacing with a computer Download PDFInfo
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- CN1036107C CN1036107C CN95109153A CN95109153A CN1036107C CN 1036107 C CN1036107 C CN 1036107C CN 95109153 A CN95109153 A CN 95109153A CN 95109153 A CN95109153 A CN 95109153A CN 1036107 C CN1036107 C CN 1036107C
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Abstract
To easily interface a video signal generator to a computer by synthesizing and outputting a video signal outputted by a CCD video signal generator and the video signal of computer according to the synchronizing signal of synchronizing signal generator based on the synchronizing signal of computer. Based on a synchronizing signal SYN from a computer video signal generating part 51 at a computer part 50, a synchronizing signal generator 42 at a CCD camera part 40 generates a synchronizing signal SYN1 and synchronously with this signal, a CCD video signal generator 41 generates a video signal VS1. Then, the signal VS1 and the video signal VS2 of computer outputted by the generator 51 are synthesized by an arithmetic circuit 45 and outputted through an output device 52 at the computer part 50. Because of such configuration unnecessitating special peripheral circuits, A/D converter and D/A converter or the like, the CCD video signal generator can be easily interfaced to the computer.
Description
The present invention relates generally to a kind of charge-coupled device (CCD) video camera that can be connected with computer, or rather, relate to a kind of like this ccd video camera that can be connected with computer, it can respond from the synchronizing signal of computer and produce a CCD vision signal, and this CCD vision signal is with synthetic from the synchronizing signal of computer and produce composite signal to external display output.
Conventional video camera is the charge-coupled device (CCD) video camera that utilizes charge coupled device basically.This ccd video camera is that a kind of charge coupled device that will utilize is that the picture signal that solid state image sensor spare produces changes the signal of telecommunication into, and for example reproduces device with the corresponding image of this picture signal on the monitor at a kind of display.
This ccd video camera is used for the rig camera of security purpose and maintenance of peace and is used as a kind of through be everlasting bank or large department stores.Recently, this ccd video camera also has been used with video camera as a kind of identification that is used for safety and keeps the peace in individual families.
Fig. 1 is that expression one comprises the conventional ccd video camera and the block diagram of system for computer.Consult Fig. 1, this system is divided into three unit basically, and promptly the ccd video camera unit 10, computer unit 30 and image input unit 20, and this unit 20 is as the interface between ccd video camera unit 10 and computer unit 30.
This ccd video camera unit 10 comprises that inner (or " synch ") signal generator 12 and synchronously is connected to the CCD flying-spot video generator 11 of the output of this inner synchronousing signal generator 12.
This elementary area 20 comprises that one is connected to simulation/numeral (A/D) transducer 21 of the output of CCD flying-spot video generator 11, one is connected to the frame memory 22 of the output of A/D converter, and a frame synchronization address generator 23 that is connected to the input of frame memory 22.This elementary area 20 comprises that also one is connected to digital-to-analog (D/A) transducer 24 of the output of frame memory 22, and an actuator 25 that is connected to the output of D/A converter 24.
This computer unit 30 comprises that one is connected to the computer video signal generator 31 of the input of the input of frame synchronization address generator 23 and actuator 25, one is connected to the controller 33 of the input of actuator 25, and an output unit 32 that is connected to the output of actuator 25.
As follows at the ccd video camera of routine and the interface work between the computer unit:
When power supply offered ccd video camera unit 10, the internal circuit in ccd video camera was started working in response to the synchronizing signal SYN1 of these inner synchronousing signal generator 12 generations.In addition, this CCD flying-spot video generator 11 enters the inner method of synchronization, produces the analog video signal VS1 to this place whereby.This analog video signal is converted into video signal through A/D converter 21 and is stored in the frame memory 22.
In addition, the synchronizing signal SYN2 that is produced by the computer video signal generator in computer unit 30 31 is imported in the frame synchronization address generator 23.Utilize frame synchronization address generator 23 to select the address of a frame memory 22, and produced the video signal that is stored in frame memory 22 as being input to the digital signal of D/A converter 24 in response to synchronizing signal SYN2.This D/A converter 24 will comprise that the digital signal of video data is converted to analog signal and this analog signal is input to actuator 25.
This actuator 25 makes this analog signal and synthetic in response to the vision signal VS2 that the command signal of coming self-controller 33 produces by computer video signal generator 31, and produces a composite signal and be input to output unit 32 in the computer unit 30.
As mentioned above, when the ccd video camera of routine is used as the image input system of computer, should carry out frame synchronization, so that make the phase place homophase of phase place with the vision signal that produces by computer of the signal that produces by ccd video camera.Its reason is, also exists the synchronizing signal SYN2 of synchronizing signal SYN1 and itself and computer irrelevant fully.
Therefore, when adopting the memory of high-speed high capacity in the ccd video camera in routine, can increase the cost of product.The product cost increase is because the high-speed memory that is used for a frame is frame memory and is used to respond synchronizing signal to carry out the address occurrence logic circuit of write and read be that the frame synchronization address generator all needs frame synchronization.
The objective of the invention is in order to overcome the shortcoming of conventional video camera.In order to realize this and other purpose, as can being connected with computer that example proposes, and comprise that one is used to produce first synchronizing signal and produces first vision signal and be suitable for the computer video signal generator of computer according to this first synchronizing signal with the video camera of the present invention of this paper summarized introduction; One is connected to this computer video signal generator and is used to respond the synchronous generator that first synchronizing signal produces second synchronizing signal; And one be connected to this synchronous generator and be used to respond the camera video signal generator that second synchronizing signal produces second vision signal.
According to another opinion of present inventor, a kind of method by a charge coupled device camera generation synchronous video signal that can be connected with computer is provided, its step that comprises is: receive first synchronizing signal from computer; In charge coupled device camera, produce and the second synchronous synchronizing signal of first synchronizing signal; In charge coupled device camera, produce first vision signal according to second synchronizing signal; Reception is from second vision signal of computer, and this second vision signal produces according to first synchronizing signal; And by the first and second video signal generating composite video signals.
Objects and advantages of the present invention will partly show in the narration below, and are obviously found out or can be understood by putting into practice the present invention by this narration.Objects and advantages of the present invention are by the each several part that particularly points out in the appended claims and comprehensively can be understood and realize.
The accompanying drawing that is included in and constitutes a part of this specification has been represented one embodiment of the present of invention, and is used from this specification one and explains principle of the present invention.
Fig. 1 is that expression comprises the conventional ccd video camera and the block diagram of system for computer.
Fig. 2 be represent according to a preferred embodiment of the present invention ccd video camera and the block diagram of the Interface status of computer.
Now consult the example of introducing in the accompanying drawings, the preferred embodiments of the present invention are described in detail.
Fig. 2 be represent according to a preferred embodiment of the present invention ccd video camera and the block diagram of the Interface status of computer.Consult Fig. 2, ccd video camera 40 comprises a synchronous generator 42, and its synchronizing signal SYN that is used to respond from computer produces synchronizing signal SYN1; A CCD flying-spot video generator 41 that is connected to the output of synchronous generator 42; And the actuator 45 that is connected to the output of CCD flying-spot video generator 41.
Computer unit 50 comprises a computer video signal generator 51, and it is connected to the input of the synchronous generator 42 in ccd video camera unit 40 and the input of actuator 45.This computer unit 50 also comprises a controller 53 that is connected to the input of actuator 45, and an output unit 52 that is connected to the output of actuator 45.
Work as follows as the ccd video camera of the present invention that this paper summarizes:
When power supply is added on the ccd video camera, synchronous generator 42 receives the synchronizing signal SYN from the computer video signal generator 51 in the computer unit 50, and produces and from the corresponding synchronizing signal SYN1 of the synchronizing signal SYN of computer video signal generator 51.At this moment, this computer video signal generator 51 produces a vision signal VS2 in response to synchronizing signal SYN, and this vision signal VS2 is transferred to actuator 45.
This CCD flying-spot video generator 41 produces a vision signal VS1 in response to the synchronizing signal SYN1 from synchronous generator 42, its phase place is identical with phase place from the vision signal VS2 of computer video signal generator 51, and this vision signal VS1 is transferred to actuator 45.
Actuator 45 receives the command signal of the controller 53 in the comfortable computer unit 50, vision signal VS1 from CCD flying-spot video generator 41 is synthesized with the vision signal VS2 that comes the flying-spot video generator 51 in the comfortable computer unit 50, and export this composite signal.
At this moment, produce command signal as described below by this controller in computer unit 50:
A) make only by CCD flying-spot video generator 41 generation vision signals;
B) make only by computer video signal generator 51 generation vision signals;
C) make from the vision signal of computer video signal generator 51 and synthetic from the signal of CCD flying-spot video generator 41, and
D) vision signal from CCD flying-spot video generator 41 is formed on the presumptive area from the signal of computer video signal generator 51.
In addition, various control methods are arranged, for example fade out method and mixing method.
As mentioned above, the advantage that ccd video camera of the present invention has is since from the vision signal of ccd video camera with synchronous from the synchronizing signal of computer unit, do not need other frame memory and frame synchronization address generator.In addition, when ccd video camera adopts analog form to realize, do not need A/D converter and D/A converter.
Another advantage is: because computer video signal and be synthesized in video camera from the vision signal of ccd video camera, ccd video camera of the present invention can be directly connected on computer body and its monitor, and need not to adopt other device.
To those skilled in the art, consider that disclosed herein specification and example can clearly understand other embodiments of the invention.This specification and example attempt are only as exemplary, and real protection range of the present invention and design are illustrated by following claim.
Claims (4)
1, a kind of video camera that can be connected with computer is characterized in that it comprises:
One computer video signal generator, it is applicable to computer, is used to produce one first synchronizing signal and produces one first vision signal according to this first synchronizing signal;
One synchronous signal generator, it is connected to described computer video signal generator, is used to respond this first synchronizing signal and produces second synchronizing signal;
One camera video signal generator, it is connected to described synchronous generator, is used to respond this second synchronizing signal and produces second vision signal; And
One final controlling element, it is connected to described computer video signal generator and camera video signal generator, is used to produce the 3rd synthetic vision signal of first and second vision signals.
2, video camera as claimed in claim 1, it is characterized in that, it comprises a final controlling element, and it is connected to described computer video signal generator and camera video signal generator, is used for according to described first and second video signal generating 1 the 3rd vision signal.
3, video camera as claimed in claim 1 is characterized in that, described camera video signal generator comprises a charge coupled device that is used to receive an image corresponding with described second vision signal.
4, a kind of method that is used for producing composite video signal from the charge coupled device camera that is connected with computer, described video camera has a synchronous signal generator and a camera video signal generator, described computer has a computer video signal generator, the method is characterized in that it comprises the following step:
Produce one first synchronizing signal and one first vision signal by the computer video signal generator;
Reception is from first synchronizing signal and first vision signal of computer video signal generator;
In synchronous generator, produce one with synchronous second synchronizing signal that adapts with electrical characteristics this video camera of first synchronizing signal;
According to this second synchronizing signal, produce second vision signal synchronous with first vision signal by the camera video signal generator;
Receive this second vision signal; And
Produce one by the synthetic composite video signal of first and second vision signals.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR94-17095 | 1994-07-15 | ||
| KR1019940017095A KR970004609B1 (en) | 1994-07-15 | 1994-07-15 | Ccd camera for computer interface |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1121287A CN1121287A (en) | 1996-04-24 |
| CN1036107C true CN1036107C (en) | 1997-10-08 |
Family
ID=19388066
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN95109153A Expired - Fee Related CN1036107C (en) | 1994-07-15 | 1995-07-15 | A camera capable of interfacing with a computer |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JPH0856303A (en) |
| KR (1) | KR970004609B1 (en) |
| CN (1) | CN1036107C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106921884A (en) * | 2017-04-27 | 2017-07-04 | 西安诺瓦电子科技有限公司 | Display control card and display control method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5173779A (en) * | 1990-10-11 | 1992-12-22 | Samsung Electronics Co., Ltd. | Camcorder with electronic still-photographing function |
| US5189514A (en) * | 1991-08-29 | 1993-02-23 | General Dynamics Corporation Convair Division | Guidance system for automatic riveters |
-
1994
- 1994-07-15 KR KR1019940017095A patent/KR970004609B1/en not_active IP Right Cessation
-
1995
- 1995-07-15 CN CN95109153A patent/CN1036107C/en not_active Expired - Fee Related
- 1995-07-17 JP JP7179992A patent/JPH0856303A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5173779A (en) * | 1990-10-11 | 1992-12-22 | Samsung Electronics Co., Ltd. | Camcorder with electronic still-photographing function |
| US5189514A (en) * | 1991-08-29 | 1993-02-23 | General Dynamics Corporation Convair Division | Guidance system for automatic riveters |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0856303A (en) | 1996-02-27 |
| KR970004609B1 (en) | 1997-03-29 |
| CN1121287A (en) | 1996-04-24 |
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