KR100189878B1 - Power control method and apparatus for interval recording - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image recording apparatus for photographing a subject and converting the electrical signal into an electrical signal and recording the converted electrical signal on a magnetic tape. By cutting off, there is an advantage in that the power consumption can be reduced to increase the actual recording time.

Description

Power control method and device at interval record

1 is a flow chart according to an embodiment of a power control method according to the present invention.

2 is a block diagram of an apparatus for carrying out the invention.

* Explanation of symbols for main parts of the drawings

200: power 210: command input

220: control unit 230: DC voltage converter

240: camera portion 250: VTR portion

260: display unit

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an image recording apparatus in which an image recording apparatus photographs a subject, converts the electrical signal into an electrical signal, and records the converted electrical signal on a magnetic tape. The present invention relates to a power control method and apparatus for interrupting power supply.

The camcorder captures a subject through a camera means as a camera-integrated V. T. VTR, generates a video signal, and stores the generated video signal in the VTR means mounted therein. The generated video signal can be displayed through an external monitor or a television receiver via a video signal recording apparatus (camcorder). In addition, in the case of a camcorder, a video signal reproduced therefrom can be viewed through a display means called an electric view finder.

Camcorders have many features, one of which is Interval Record. In other words, to record changes at regular intervals to observe changes over time. For example, if the interval is 5 minutes, the actual recording operation is performed for about 1 second, and after about 9 seconds for the system to stabilize, the stand-by state is maintained for about 4 minutes and 50 seconds.

However, although no power supply is required for the camera means or the VTR means in the standby state at the time of Interval Recording, power is almost supplied to the means as in the recording state. Generally, a battery with a continuous use time of about 1 hour is used as a power source for the camcorder. When the interval shooting function aims at observing long-term changes, the camera consumes almost the same power as in the recording state even when in standby mode. There was a problem that could not be done. If the interval time is 5 minutes, the power is supplied only for about 10 seconds, which is the time for actual instant recording and system stability, and the power is cut off for the rest of the time, 48 minutes on a battery with 1 hour of continuous use. You can take short pictures for about 1 day (24 hours).

Accordingly, an object of the present invention is to provide a power control method for reducing power consumption by shutting off power supply in a standby state in which interval recording power supply is not required.

Another object of the present invention is to provide a power supply control apparatus for achieving the above method.

In order to achieve the above object, a power supply control method for capturing intervals according to the present invention includes a first power supply for camera means for capturing a subject and converting it into an image signal, and VTR means for recording the converted image signal on magnetic tape; A power supply control method of an image recording apparatus having an interval photographing function of performing instant recording every first predetermined time by having a second power supply for displaying means for displaying the image signal, wherein the mode determines whether the recording mode is in the recording mode. In the determination step, a command input step of inputting a command for interval photography, and if the command is a recording command for interval photography in the command input step, the first power supply and the second power supply are shut off and the second predetermined time within the first predetermined time. A power off step of starting to count the number of steps; starting the count in the power off step to check whether the second predetermined time has elapsed It is characterized in that the check time step, a second interval taken to perform the steps of a predetermined period of time has elapsed If you do the power supply phase, and the distance up to supply power from the time the checking step.

In order to achieve the above object, a power supply control apparatus for interval photographing according to the present invention includes a first power source for camera means for capturing a subject and converting it into an image signal, and a VTR means for recording the converted image signal on a magnetic tape. And a second power supply for display means for displaying the video signal, the power control apparatus of the image recording apparatus having an interval photographing function for instant recording every predetermined time, wherein at least the camera mode for recording is provided. A command input means having a key, a key for a VTR mode for reproducing, a key for interval shooting, a key for notifying recording start and end, and a camera means if a camera mode is input according to the output of the command input means. Generating a first control signal for supplying a first power source for driving the A control means for generating a second control signal for supplying a second power source for driving the stage; and a first control signal according to a first control signal output from the control means from a power source connected to the outside, and a second control signal. It characterized in that it comprises a DC power conversion means for supplying a second power.

Next, the present invention will be described in detail with reference to the accompanying drawings.

1 is an example applied to a camcorder as a power supply control method according to the present invention.

1 is a mode determination step (step 10) for determining whether the recording mode is in operation; a recording command input step (steps 20 to 30) for inputting a command for interval photographing; A power off step (step 40) to start counting the second predetermined time within the first predetermined time, a time checking step (steps 50 to 60) for checking whether the second predetermined time has elapsed, and supplying power Power supply step (step 70), performing interval shooting to perform interval shooting (step 90), tape end checking step (step 90) to check the end of the tape, and inputting another command having priority It consists of another instruction execution step (steps 110 to 120) and a termination step (step 100) for terminating the system.

FIG. 2 is a block diagram of an apparatus for performing the method shown in FIG. 1, which is an external power supply 200 for driving a camcorder, and a command input unit for inputting a command for determining a mode and driving each means. 210, a control unit 220 for controlling the power supply according to the signal output from the command input unit 210, a DC voltage converter for supplying the first power and the second power in accordance with the control signal output from the control unit 220 ( 230, a camera unit 240 for photographing a subject and converting the image signal into a video signal, a VTR unit 250 for recording the video signal converted by the camera unit 240 on a magnetic recording tape, and a display unit for displaying the video signal ( 260).

Next, the operation of the present embodiment will be described with reference to FIGS. 1 and 2.

A typical camcorder has a power switch (CAM) used for recording cameras and a VTR power switch (VTR) used for playback or editing. It has a Stand-by key for recording, an interval shooting key for interval shooting, and a recording start / stop switch for starting or stopping camera recording. The keys may be fixed to the camcorder itself or attached to a remote controller. In the recording mode, set the power key to CAM and turn on the Stand-By key. In the playback editing mode, set the power key to VTR and operate keys such as tape play, stop, and rewind.

When the power key is set to the CAM position and the standby key is turned on for the camera recording, a command for the recording mode is input through the command input unit 210 to be applied to the controller 220 (step 10). In the recording mode, power must be supplied to both the camera unit 240, the VTR unit 250, and the display unit 260.

In this case, the controller 220 supplies the first control signal CAM1 for supplying the first power CAM2 to the camera unit 240, and the second power source VTR2 for the VTR unit 250 and the display unit 260. The second control signal VTR2 is output to the DC voltage converter 230, and the DC voltage converter 230 converts the power 200 supplied from the outside into power required by each unit and is output from the controller 220. The first or second power source is supplied to each unit by the control signals. In the normal playback editing mode, the video being played by the VTR unit 260 is viewed through the display unit 260, and thus the second power source PVTR is simultaneously supplied to the display unit 260 as the VTR unit 250. The display unit 260 is mounted to the camcorder by EVF.

After the user turns on the interval shooting key for interval shooting (step 20), the user inputs a recording command for starting interval shooting by turning on the recording start key (step 30). When the recording start command for interval shooting is output to the control unit 220 through the command input unit 210, the first control to reset the timer to check the standby state, and to cut off the first power (PCAM) The second control signal VTR for cutting off the signal CAM and the second power source PVTR is output. Here, if the predetermined time for interval photography is 5 minutes, about 4 minutes and 50 seconds except for about 10 seconds, which is the sum of the short time for actual recording and the time for system stability, becomes a standby state without recording. In the DC voltage converter 230, the first power PCAM cuts off the supply of the second power PVTR in the standby state.

Until the timer displays 4 minutes and 50 seconds, it is in the standby state and power is not supplied to each of the means, but it is not driven, but commands such as normal recording, playback, editing, etc. have priority over the interval recording command. In step 50, the interval photographing command operation is stopped and the command having priority has been performed (step 120).

After 4 minutes and 50 seconds when the timer is idle (step 60), the controller 220 provides a first control signal for supplying the first power PCAM and the second power PVTR for recording for interval shooting. The CAM and the second control signal VTR are output to the DC power converter 230, and the DC voltage converter 230 decodes the first power PCAM and the second power PVTR by the control signals. In step 70, the camcorder performs a short interval shooting (step 80).

After the interval shooting is performed, the timer returns to the standby state for the next interval shooting after 5 minutes, and the timer is reset and the power supply is cut (step 40). At this time, after checking whether the tape for recording embedded in the VTR unit 250 is the end, if not, the process returns to step 40 to block timer reset and power supply. If it is confirmed that the tape is finished (step 90), the timer is operated for 5 minutes to prevent power wastage and the user is allowed to change the tape, and then the system is shut down (step 100). Camcorders use built-in sensors to tell the end of the tape, such as an OSD (On Screen Display), to alert the user just before the tape is finished.

In steps 20 and 30, if commands having priority over interval shooting are input (step 110), the commands are executed (step 120).

If no command is input for 5 minutes in the recording mode, the 5-minute timer is operated to shut down the system (step 90).

As described above, the power control method and apparatus according to the present invention can cut the power supply in a place where power is not required in the standby state during interval recording, thereby reducing power consumption and lengthening the actual recording time. There is an advantage to that.

Claims (2)

A first power source for camera means for imaging a subject and converting it into an image signal, a VTR means for recording the converted image signal on magnetic tape, and a second power source for display means for displaying the image signal; A power control method of a video recording apparatus having an interval shooting function for performing instant recording every one predetermined time, the method comprising: a mode determination step of determining whether a recording mode is used, a command input step of inputting a command for interval shooting, and the command input In the step, if the command is a recording command for interval photographing, the first power source and the second power source are cut off, and the power-off step of starting the count of the second predetermined time within the first predetermined time starts the count in the power-off step. A function according to the command when a command for checking whether the second predetermined time has elapsed and performing another function having priority has been input A time checking step, a power supply step of supplying power if the second predetermined time elapses in the time checking step, an interval photographing step of performing interval photographing, and a tape confirming the end of the tape after the interval photographing step is executed And a terminating step of terminating the system operation after the first predetermined time when the end of the tape is confirmed in the end checking step and confirming that the tape is finished. A first power source for camera means for imaging a subject and converting it into an image signal, a VTR means for recording the converted image signal on a magnetic tape, and a second power source for display means for displaying the image signal A power control apparatus of an image recording apparatus having an interval recording function for instantaneous recording every time, comprising: at least a key for camera mode for recording, a key for VTR mode for playback, and a key for interval shooting And a command input means having a key for notifying the start and end of recording, and when the camera mode is input according to the output of the command input means, generating a first control signal for supplying a first power for driving the camera means, and a VTR. Control means for generating a second control signal for supplying a second power source for driving the VTR means and the display means when a mode is input; And a direct current power conversion means for supplying a first power according to a first control signal output from the control means from a power source connected to the unit, and supplying a second power according to a second control signal. Power control unit.