CN1121287A - A camera capable of interfacing with a computer - Google Patents
A camera capable of interfacing with a computer Download PDFInfo
- Publication number
- CN1121287A CN1121287A CN 95109153 CN95109153A CN1121287A CN 1121287 A CN1121287 A CN 1121287A CN 95109153 CN95109153 CN 95109153 CN 95109153 A CN95109153 A CN 95109153A CN 1121287 A CN1121287 A CN 1121287A
- Authority
- CN
- China
- Prior art keywords
- signal
- computer
- video
- generator
- camera
- Prior art date
- Legal status (The legal status 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 status listed.)
- Granted
Links
Images
Abstract
A camera which can be connected with a computer of the invention consists of a computer video signal generator which is suitable for the computer and is used for generating a first synchronized signal and a first video signal according to the first synchronizing signal; a synchronized signal generator which is connected with the computer video signal generator and is used for responding to the first synchronized signal and generating a second synchronized signal; as well as a camera video signal generator which is connected with the synchronized signal generator and is used for responding to the second synchronized signal and generating a second video signal.
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 (6)
1, a kind of video camera that can be connected with computer, this computer produce one first synchronizing signal and produce one first vision signal according to this first synchronizing signal, and this video camera 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; And
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.
2, video camera as claimed in claim 1 also 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, wherein said camera video signal generator comprise a charge coupled device that is used to receive an image corresponding with described second vision signal.
4, video camera as claimed in claim 2 also comprises a controller, and it is applicable to computer, is used to produce a command signal, and wherein said final controlling element comprises the device that is used for producing according to this command signal the 3rd vision signal.
5, video camera as claimed in claim 2, wherein this final controlling element comprises and is used for the 3rd vision signal is provided to device on this computer.
6, a kind of method that is used for producing composite video signal from the charge coupled device camera that can be connected with computer, the step that comprises is:
Reception is from first synchronizing signal of computer;
In this charge coupled device camera, produce second synchronizing signal synchronous with first synchronizing signal;
In this charge coupled device camera, produce first vision signal according to this second synchronizing signal;
Reception produces second vision signal by second vision signal that computer comes according to this first synchronizing signal; And
By synthetic vision signal of this first and second video signal generating.
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 true CN1121287A (en) | 1996-04-24 |
| CN1036107C 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) |
Cited By (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 |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR930002042Y1 (en) * | 1990-10-11 | 1993-04-23 | 삼성전자 주식회사 | Camcoder |
| 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
Cited By (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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1036107C (en) | 1997-10-08 |
| JPH0856303A (en) | 1996-02-27 |
| KR970004609B1 (en) | 1997-03-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1150749C (en) | Image signal recording apparatus and image signal recording method | |
| US6549641B2 (en) | Screen image observing device and method | |
| CN101370089B (en) | Split joint display parallel processing system | |
| US5608864A (en) | Variable pixel depth and format for video windows | |
| JP3266119B2 (en) | Liquid crystal display device and video data transfer method | |
| CN85107729A (en) | Flicker-freely reappear the television receiver of interlaced video signal | |
| CN1036107C (en) | A camera capable of interfacing with a computer | |
| JPH09179537A (en) | Loop back video preview for computer display | |
| CN1148774A (en) | Device for reducing scintillation of coder | |
| US5459484A (en) | Display control system and method of using same | |
| JP3423327B2 (en) | Video signal input / output device | |
| EP0423979B1 (en) | High definition video signal recording systems | |
| JP2951871B2 (en) | Display data output device, information processing device, and display data output method | |
| US5774589A (en) | Image processing system | |
| JP3966121B2 (en) | Screen composition type display device | |
| JPH0833716B2 (en) | Video signal converter | |
| JPH03287197A (en) | Compressing method for display data | |
| JPS63289588A (en) | Image display device | |
| JPH02179681A (en) | Controller for dot matrix display medium | |
| CN1121117C (en) | Drive method for image taking device | |
| CN1110186C (en) | Image sensing element simulator | |
| JPH0345994A (en) | Image display device | |
| JPH06197344A (en) | Video display system | |
| JPH11346346A (en) | Image converter and image converting method | |
| JPH0191569A (en) | Transfer controller for picture data |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| 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 |