CA2097860A1 - Monitor system with automatic recording control - Google Patents
Monitor system with automatic recording controlInfo
- Publication number
- CA2097860A1 CA2097860A1 CA 2097860 CA2097860A CA2097860A1 CA 2097860 A1 CA2097860 A1 CA 2097860A1 CA 2097860 CA2097860 CA 2097860 CA 2097860 A CA2097860 A CA 2097860A CA 2097860 A1 CA2097860 A1 CA 2097860A1
- Authority
- CA
- Canada
- Prior art keywords
- microprocessor unit
- tape recorder
- video tape
- switch
- unit
- 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.)
- Abandoned
Links
Classifications
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B13/00—Burglar, theft or intruder alarms
- G08B13/18—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength
- G08B13/189—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems
- G08B13/194—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems using image scanning and comparing systems
- G08B13/196—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems using image scanning and comparing systems using television cameras
- G08B13/19665—Details related to the storage of video surveillance data
- G08B13/19671—Addition of non-video data, i.e. metadata, to video stream
- G08B13/19673—Addition of time stamp, i.e. time metadata, to video stream
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B13/00—Burglar, theft or intruder alarms
- G08B13/18—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength
- G08B13/189—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems
- G08B13/194—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems using image scanning and comparing systems
- G08B13/196—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems using image scanning and comparing systems using television cameras
- G08B13/19634—Electrical details of the system, e.g. component blocks for carrying out specific functions
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B13/00—Burglar, theft or intruder alarms
- G08B13/18—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength
- G08B13/189—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems
- G08B13/194—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems using image scanning and comparing systems
- G08B13/196—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems using image scanning and comparing systems using television cameras
- G08B13/19654—Details concerning communication with a camera
- G08B13/1966—Wireless systems, other than telephone systems, used to communicate with a camera
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B13/00—Burglar, theft or intruder alarms
- G08B13/18—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength
- G08B13/189—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems
- G08B13/194—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems using image scanning and comparing systems
- G08B13/196—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems using image scanning and comparing systems using television cameras
- G08B13/19695—Arrangements wherein non-video detectors start video recording or forwarding but do not generate an alarm themselves
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/18—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
- H04N7/188—Capturing isolated or intermittent images triggered by the occurrence of a predetermined event, e.g. an object reaching a predetermined position
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Library & Information Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Closed-Circuit Television Systems (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
A monitor system with automatic recording control including a plurality of monitoring units respectively installed in different monitoring spots, and a central processing unit for controlling a video tape recorder to record images taken by either monitoring units, each monitoring unit including a detection trigger connected to the signal input port of the microprocessor unit through a starting switch, the starting switching being connected to the reset contact legs of the microprocessor unit through an auto reset switch, and a video camera being connected to the output port of the microprocessor unit through an electronic switch, the microprocessor unit having a first set of output control legs connected to a remote control circuit thereof, and a second set of output control legs for communication with the remote controller of a video tape recorder or for connecting to the control switch of the video tape recorder.
A monitor system with automatic recording control including a plurality of monitoring units respectively installed in different monitoring spots, and a central processing unit for controlling a video tape recorder to record images taken by either monitoring units, each monitoring unit including a detection trigger connected to the signal input port of the microprocessor unit through a starting switch, the starting switching being connected to the reset contact legs of the microprocessor unit through an auto reset switch, and a video camera being connected to the output port of the microprocessor unit through an electronic switch, the microprocessor unit having a first set of output control legs connected to a remote control circuit thereof, and a second set of output control legs for communication with the remote controller of a video tape recorder or for connecting to the control switch of the video tape recorder.
Description
-~ 2097860 1 MONITOR SYSTEM WITH AUTOMATIC RECORDING ~Q~~L
BACKGROUND OF THE INVENTION
The present invention relates to an automatic recording control and more particularly to a monitor system with automatic recording control for controlling a video tape recorder to record images taken by either monitoring unit installed in any of various monitoring spots.
A variety of monitor systems are known, and widely used for monitoring elevatorsi, exhibition centers, show rooms, storage places, etc. These monitor systems generally comprisesi a monitor and a video tape recorder.
When a monitor system is turned on, the monitor and the video tape recorder keep operating 24 hours a day.
Therefore, video tapes must be continuously supplied by operators. Because the monitor and the video tape recorder are continuously operated, their service life will be greatly shortened. Further, when several spots are to be monitored, the installation cost of the monitor system is very expensive because a video camera and a video tape recorder must be simultaneously installed in each monitoring spot.
.
SUMMARY OF THE INVENTION
. . . .
~ , 2~97~
1The present invention provides a monitor system with automatic recording control which comprises a plurality of monitoring units respectively installed in different spots to be monitored, and a microprocessor unit for ~-controlling a video tape recorder to record images taken by either monitoring units. Each monitoring unit comprises a detection trigger connected to the signal input legs of the microprocessor unit through a starting switcb, and a video camera connected to the output legs of the microprocessor unit through an electronic switch. The starting switch is connected to the reset legs of the microprocessor unit through an auto reset switch and a manual reset switch respectively. The recording control output legs of the ~ i microprocessor unit may be directly connected to a video tape recorder or indirectly connected to the video tape recorder via a remote controller. When an intruder enters the detecting range of either monitoring unit or a respective push-button switch is pressed, the respective monitoring unit is triggered to start the video camera. At the same time, a signal is sent by the alerted monitoring unit to the microprocessor unit causing it to turn on the video tape recorder for recording the images taken by the video camera of the alerted monitoring unit. Therefore, the monitoring units and the video tape recorder do not work when no event is happened. An alarm system may be 20978~0 l connected to the monitor system recording control. When either monitoring unit is alerted, a triggered signal i5 sent to the alarm system, causing it to alarm.
BRIEF DESCRIPTION OF THE DRAWINGS
Fig. l is a circuit block diagram of the present invention;
Fig. 2 is a circuit diagram of the present invention; and Fig. 3 is a operation flow chart of the microprocessor unit of the present invention.
DETAILED DESCRIPTION OF ~ PREFERRED EMBODIMENT
Referring to Figure l, a monitor system with automatic recording control in accordance with the prexent invention is generally comprised of at least one monitoring unit l, and a microprocessor unit 2. The microproce~sor unit 2 is stored with a software control program for controlling the operation of the automatic recording control. The monitoring unit l comprises a detection trigger ll, a video camera 12, a starting switch 13, and an , `~-electronic switch 14. The detection trigger ll, which can be an infrared detector, push-button switch, door bell, electronic starter, human body sensor, etc., is connected to the signal input port of the microprocessor unit 2 through 3 ;
;. ....
:
- 2097~60 1 the starting switch 13. The starting switch 13 is connected to the reset contact legs of the microprocessor unit 2 through an auto reset switch 5. The microprocessor unit 2 is provided with a manual reset switch 5. The video camera 12 is connected to the output port of the microprocessor unit 2 through the electronic switch 14. The microprocessor unit 2 comprises a set of output control legs connected to a built-in infrared remote control circuit 71, and a set of video tape recorder control output legs 70 connected to the remote controller of a video tape recorder or directly connected to the control switch of the video tape recorder. By means of the control of the infrared remote control circuit 71 or the set of video tape recorder control output legs 70, the video tape recorder is started or switched off. Alternatively, the video tape recorder can also be controlled by the remote controller. The video tape recorder is connected to the input port of the microprocessor unit 2 through a video tape recorder power detecting circuit 8. There is provided a remote control frequency selector circuit 9 and at least one timer circuit 4 re~pectively connected to the input port of the microprocessor unit 2. The number of the at least one timer circuit 4 is determined according to the number of the at least one monitoring unit 1. The remote control frequency selector circuit 9 is for changing the output frequency of ' 209786V
1 the infrared remote control circuit 71.
The quantity of the monitoring unit 1 is determined according to the number of locations to be monitored. When there is any event occurred at either monitoring spot, the respective monitoring unit immediately starts the respective video tape recorder, and simultaneously triggers the microprocessor unit 2 to drive the video tape recorder to record the images.
Referring to Figure 2, the detection trigger 11 is alerted as the starting switch 13 is switched on after the input of power supply. If there is any triggered signal, the auto reset switch 5 of the microprocessor unit 2 is instantaneously connected to give a signal to the microprocessor unit 2, causing the microprocessor unit 2 to clear last received signals and enter the state of receiving new signals. If the auto reset switch 5 does not work after the detection trigger has been alerted, the microprocessor unit 2 can be reset manually by pressing the manual reset switch 6. Then, the output frequency of the infrared remote control circuit 71 is selected for controllin~ the operation of the video tape recorder 31.
Through the control of the timer circuit 4, the video tape recorder 31 is controlled by the microprocessor unit 2 to -' 20~786~
1 record the images taken by the video camera 12 at every event location according to the selected length of time. ~ ~
Because the detection trigger 11 of the ~: :
monitoring unit 1 at either monitoring spot is connected with a respective starting switch 13, switching on any :
starting switch 13 causes the respective monitoring unit to become alerted. If there is an event occurred at one monitoring spot, the detection trigger 11 of the respective monitoring unit 1 immediately gives a triggered signal to the microprocessor unit 2, causing the microprocessor unit 2 to turn on the electronic switch 14 of the alerted monitoring unit 1, and therefore the respective video camera 12 is started to take images. At the same time, the video tape recorder 31 is started to record the images taken by the video camera 12 of the alerted monitoring unit 1 at a predetermined length of time, by means of the control of the set of video tape recorder output legs 70 of the ;~
microprocessor unit 2 directly or through the control of the corresponding remote controller 32 (the function key of the remote controller may be triggered to start the video ~ 2Y~
tape recorder by the microprocessor unit 2 via a mechanical device). The microprocessor unit 2 may be controlled to transmit a control frequency through the infrared remote :
control circuit 71 for controlling the remote controller 32 ~. ' ~".
``` 2097~6~
l to start the video tape recorder 31.
The output terminal of the video tape recorder 31 is connected to the input port of the microprocessor unit 2 through the video tape recorder power detecting circuit 8.
As the video tape recorder 31 is started, the output terminal of the video tape recorder 31 sends a voltage to the video tape recorder power detecting circuit 8, causing the transistor switch 33 of the video tape recorder power detecting circuit 8 to obtain a V BE voltage from between the base and emitter thereof, therefore the passage between the collector and emitter of the transistor switch 33 is electrically connected to turn on a LED (light emitting diode) 34. On the contrary, the LED 34 is off if the video tape recorder 31 is not ~tarted.
Heferring to Figure 3 and Figure 1 again, after "power on" 20, the auto reset switch 5 of the microprocessor unit 2 is instantaneously connected, causing the microprocessor unit 2 to execute "auto reset" 21 and then to enter the step of "default setting" 22. After "default setting" 22, the microprocessor unit 2 proceeds to the step of "receiving the input of triggered signal Sn?" 23, and then to the next step if there is a triggered signal Sn received. If there is no triggered signal Sn, the 2~97860 l microprocessor unit 2 enters the mode of "waiting for signal input" 24 the continuously judges the proce~ of "receiving the input of triggered signal Sn 52" and then returns to "auto reset" 21. When a triggered signal is received and identified and "auto reset" 21 and "default setting" 22 have been done, the microprocessor ùnit 2 immediately enters the step of "S1 = Sn" 25 to judge if the first inputted triggered signal S1 equals to the default value Sn. If S1 is not equal to Sn, then the microprocessor unit 2 enters the step of "S2 = Sn" 28 to judge if the second inputted triggered signal equals to the default value Sn. The judging procedure is continued until "Sn = Sn?" 41 to check if the "n" time triggered signal equals to the default value Sn. If the "n" time triggered signal is not equal to the default value, the microprocessor unit 2 immediately returns to the step of 25 "waiting for signal input" 24. If the first inputted triggered signal Sl equals to the default value Sn, the microprocessor unit 2 immediately enters the step of "selecting setting time Tl" 26 to automatically select a setting time, and then proceeds to the step of "generating a video camera start signal C" 27 to start the respective video camera. After a video camera start signal has been produced to start the respective video camera, the m1croprocessor unit 2 immediately enters the step of 2097~60 l "detecting if the video tape recorder turned on?" 44. If the video tape recorder is on, the procedure of "start recording" 47 is executed. If the video tape recorder is off, the procedure of "switching on the video tape recorder"
is executed to turn on the video tape recorder for recording the images after to a "duration of time tl" 46 which allows the magnetic head to touch the video tape.
After the procedure of "start recording" 47, the video tape recorder is controlled to record images according to the selected "duration of time tn" 48. As the selected "duration of time tn" 48 i~ up, the procedure of "stop recording" 49 is executed. After the "duration of time t3" 50 for allowing the magnetic head to leaf from the video tape, the procedure of "switching off the video tape recorder" 51 is executed, and then the microprocessor unit 2 returns to the step of "waiting for signal input" 24 and to continue the operation.
. ' .
: ~.,, . :
BACKGROUND OF THE INVENTION
The present invention relates to an automatic recording control and more particularly to a monitor system with automatic recording control for controlling a video tape recorder to record images taken by either monitoring unit installed in any of various monitoring spots.
A variety of monitor systems are known, and widely used for monitoring elevatorsi, exhibition centers, show rooms, storage places, etc. These monitor systems generally comprisesi a monitor and a video tape recorder.
When a monitor system is turned on, the monitor and the video tape recorder keep operating 24 hours a day.
Therefore, video tapes must be continuously supplied by operators. Because the monitor and the video tape recorder are continuously operated, their service life will be greatly shortened. Further, when several spots are to be monitored, the installation cost of the monitor system is very expensive because a video camera and a video tape recorder must be simultaneously installed in each monitoring spot.
.
SUMMARY OF THE INVENTION
. . . .
~ , 2~97~
1The present invention provides a monitor system with automatic recording control which comprises a plurality of monitoring units respectively installed in different spots to be monitored, and a microprocessor unit for ~-controlling a video tape recorder to record images taken by either monitoring units. Each monitoring unit comprises a detection trigger connected to the signal input legs of the microprocessor unit through a starting switcb, and a video camera connected to the output legs of the microprocessor unit through an electronic switch. The starting switch is connected to the reset legs of the microprocessor unit through an auto reset switch and a manual reset switch respectively. The recording control output legs of the ~ i microprocessor unit may be directly connected to a video tape recorder or indirectly connected to the video tape recorder via a remote controller. When an intruder enters the detecting range of either monitoring unit or a respective push-button switch is pressed, the respective monitoring unit is triggered to start the video camera. At the same time, a signal is sent by the alerted monitoring unit to the microprocessor unit causing it to turn on the video tape recorder for recording the images taken by the video camera of the alerted monitoring unit. Therefore, the monitoring units and the video tape recorder do not work when no event is happened. An alarm system may be 20978~0 l connected to the monitor system recording control. When either monitoring unit is alerted, a triggered signal i5 sent to the alarm system, causing it to alarm.
BRIEF DESCRIPTION OF THE DRAWINGS
Fig. l is a circuit block diagram of the present invention;
Fig. 2 is a circuit diagram of the present invention; and Fig. 3 is a operation flow chart of the microprocessor unit of the present invention.
DETAILED DESCRIPTION OF ~ PREFERRED EMBODIMENT
Referring to Figure l, a monitor system with automatic recording control in accordance with the prexent invention is generally comprised of at least one monitoring unit l, and a microprocessor unit 2. The microproce~sor unit 2 is stored with a software control program for controlling the operation of the automatic recording control. The monitoring unit l comprises a detection trigger ll, a video camera 12, a starting switch 13, and an , `~-electronic switch 14. The detection trigger ll, which can be an infrared detector, push-button switch, door bell, electronic starter, human body sensor, etc., is connected to the signal input port of the microprocessor unit 2 through 3 ;
;. ....
:
- 2097~60 1 the starting switch 13. The starting switch 13 is connected to the reset contact legs of the microprocessor unit 2 through an auto reset switch 5. The microprocessor unit 2 is provided with a manual reset switch 5. The video camera 12 is connected to the output port of the microprocessor unit 2 through the electronic switch 14. The microprocessor unit 2 comprises a set of output control legs connected to a built-in infrared remote control circuit 71, and a set of video tape recorder control output legs 70 connected to the remote controller of a video tape recorder or directly connected to the control switch of the video tape recorder. By means of the control of the infrared remote control circuit 71 or the set of video tape recorder control output legs 70, the video tape recorder is started or switched off. Alternatively, the video tape recorder can also be controlled by the remote controller. The video tape recorder is connected to the input port of the microprocessor unit 2 through a video tape recorder power detecting circuit 8. There is provided a remote control frequency selector circuit 9 and at least one timer circuit 4 re~pectively connected to the input port of the microprocessor unit 2. The number of the at least one timer circuit 4 is determined according to the number of the at least one monitoring unit 1. The remote control frequency selector circuit 9 is for changing the output frequency of ' 209786V
1 the infrared remote control circuit 71.
The quantity of the monitoring unit 1 is determined according to the number of locations to be monitored. When there is any event occurred at either monitoring spot, the respective monitoring unit immediately starts the respective video tape recorder, and simultaneously triggers the microprocessor unit 2 to drive the video tape recorder to record the images.
Referring to Figure 2, the detection trigger 11 is alerted as the starting switch 13 is switched on after the input of power supply. If there is any triggered signal, the auto reset switch 5 of the microprocessor unit 2 is instantaneously connected to give a signal to the microprocessor unit 2, causing the microprocessor unit 2 to clear last received signals and enter the state of receiving new signals. If the auto reset switch 5 does not work after the detection trigger has been alerted, the microprocessor unit 2 can be reset manually by pressing the manual reset switch 6. Then, the output frequency of the infrared remote control circuit 71 is selected for controllin~ the operation of the video tape recorder 31.
Through the control of the timer circuit 4, the video tape recorder 31 is controlled by the microprocessor unit 2 to -' 20~786~
1 record the images taken by the video camera 12 at every event location according to the selected length of time. ~ ~
Because the detection trigger 11 of the ~: :
monitoring unit 1 at either monitoring spot is connected with a respective starting switch 13, switching on any :
starting switch 13 causes the respective monitoring unit to become alerted. If there is an event occurred at one monitoring spot, the detection trigger 11 of the respective monitoring unit 1 immediately gives a triggered signal to the microprocessor unit 2, causing the microprocessor unit 2 to turn on the electronic switch 14 of the alerted monitoring unit 1, and therefore the respective video camera 12 is started to take images. At the same time, the video tape recorder 31 is started to record the images taken by the video camera 12 of the alerted monitoring unit 1 at a predetermined length of time, by means of the control of the set of video tape recorder output legs 70 of the ;~
microprocessor unit 2 directly or through the control of the corresponding remote controller 32 (the function key of the remote controller may be triggered to start the video ~ 2Y~
tape recorder by the microprocessor unit 2 via a mechanical device). The microprocessor unit 2 may be controlled to transmit a control frequency through the infrared remote :
control circuit 71 for controlling the remote controller 32 ~. ' ~".
``` 2097~6~
l to start the video tape recorder 31.
The output terminal of the video tape recorder 31 is connected to the input port of the microprocessor unit 2 through the video tape recorder power detecting circuit 8.
As the video tape recorder 31 is started, the output terminal of the video tape recorder 31 sends a voltage to the video tape recorder power detecting circuit 8, causing the transistor switch 33 of the video tape recorder power detecting circuit 8 to obtain a V BE voltage from between the base and emitter thereof, therefore the passage between the collector and emitter of the transistor switch 33 is electrically connected to turn on a LED (light emitting diode) 34. On the contrary, the LED 34 is off if the video tape recorder 31 is not ~tarted.
Heferring to Figure 3 and Figure 1 again, after "power on" 20, the auto reset switch 5 of the microprocessor unit 2 is instantaneously connected, causing the microprocessor unit 2 to execute "auto reset" 21 and then to enter the step of "default setting" 22. After "default setting" 22, the microprocessor unit 2 proceeds to the step of "receiving the input of triggered signal Sn?" 23, and then to the next step if there is a triggered signal Sn received. If there is no triggered signal Sn, the 2~97860 l microprocessor unit 2 enters the mode of "waiting for signal input" 24 the continuously judges the proce~ of "receiving the input of triggered signal Sn 52" and then returns to "auto reset" 21. When a triggered signal is received and identified and "auto reset" 21 and "default setting" 22 have been done, the microprocessor ùnit 2 immediately enters the step of "S1 = Sn" 25 to judge if the first inputted triggered signal S1 equals to the default value Sn. If S1 is not equal to Sn, then the microprocessor unit 2 enters the step of "S2 = Sn" 28 to judge if the second inputted triggered signal equals to the default value Sn. The judging procedure is continued until "Sn = Sn?" 41 to check if the "n" time triggered signal equals to the default value Sn. If the "n" time triggered signal is not equal to the default value, the microprocessor unit 2 immediately returns to the step of 25 "waiting for signal input" 24. If the first inputted triggered signal Sl equals to the default value Sn, the microprocessor unit 2 immediately enters the step of "selecting setting time Tl" 26 to automatically select a setting time, and then proceeds to the step of "generating a video camera start signal C" 27 to start the respective video camera. After a video camera start signal has been produced to start the respective video camera, the m1croprocessor unit 2 immediately enters the step of 2097~60 l "detecting if the video tape recorder turned on?" 44. If the video tape recorder is on, the procedure of "start recording" 47 is executed. If the video tape recorder is off, the procedure of "switching on the video tape recorder"
is executed to turn on the video tape recorder for recording the images after to a "duration of time tl" 46 which allows the magnetic head to touch the video tape.
After the procedure of "start recording" 47, the video tape recorder is controlled to record images according to the selected "duration of time tn" 48. As the selected "duration of time tn" 48 i~ up, the procedure of "stop recording" 49 is executed. After the "duration of time t3" 50 for allowing the magnetic head to leaf from the video tape, the procedure of "switching off the video tape recorder" 51 is executed, and then the microprocessor unit 2 returns to the step of "waiting for signal input" 24 and to continue the operation.
. ' .
: ~.,, . :
Claims (5)
1. A monitor system with automatic recording control comprising at least one monitoring unit, and a microprocessor unit, said microprocessor unit being stored with a software control program for operation control, each monitoring unit comprising a detection trigger, a video camera, a starting switch, and an electronic switch, said detection trigger being connected to the signal input port of said microprocessor unit through the starting switch of the same monitoring unit, said starting switch being connected to reset contact legs of said microprocessor unit through an auto reset switch, said video camera being connected to an output port of said microprocessor unit through the electronic switch of the same monitoring unit, said microprocessor unit comprising a first set of output control legs connected to a remote control circuit thereof, and a second set of output control legs for communication with the remote controller of a video tape recorder or for connecting to the control switch of said video tape recorder, said video tape recorder being connected to an input port of said microprocessor unit through a video tape recorder power detecting circuit.
2. The monitor system with automatic recording control according to claim 1 wherein the detection trigger of either monitoring unit can be an infrared detector, push-button switch, door bell, electronic starter, human body sensor, etc.
3. The monitor system with automatic recording control according to claim 1 wherein the number of said at least one monitoring units is determined according to the number of spots to be monitored.
4. The monitor system with automatic recording control according to claim 1 or claim 3 wherein said microprocessor unit comprises at least one timer circuit for setting the duration of recording time, the number of said at least one timer circuit being equal to the number of said at least one monitoring unit.
5. The monitor system with automatic recording control according to claim 1 wherein said microprocessor unit comprises a remote control frequency selector for setting a desired remote control frequency.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2097860 CA2097860A1 (en) | 1993-06-07 | 1993-06-07 | Monitor system with automatic recording control |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2097860 CA2097860A1 (en) | 1993-06-07 | 1993-06-07 | Monitor system with automatic recording control |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2097860A1 true CA2097860A1 (en) | 1994-12-08 |
Family
ID=4151756
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2097860 Abandoned CA2097860A1 (en) | 1993-06-07 | 1993-06-07 | Monitor system with automatic recording control |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2097860A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2298756A (en) * | 1995-03-07 | 1996-09-11 | Anthony George Martin | Security system domestic video recorder controller |
| GB2309133A (en) * | 1996-01-11 | 1997-07-16 | Richad Thomas Fortescue | Video surveillance system including video recorder timing control device |
-
1993
- 1993-06-07 CA CA 2097860 patent/CA2097860A1/en not_active Abandoned
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2298756A (en) * | 1995-03-07 | 1996-09-11 | Anthony George Martin | Security system domestic video recorder controller |
| GB2298756B (en) * | 1995-03-07 | 1997-05-14 | Anthony George Martin | Domestic video cassette recorder control box |
| GB2309133A (en) * | 1996-01-11 | 1997-07-16 | Richad Thomas Fortescue | Video surveillance system including video recorder timing control device |
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