JPH09200671A - Camcorder with tv tuner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain the camcorder capable of preventing failed video recording due to an exhausting battery on the way of video recording by inhibiting timer reservation for a prescribed time or over when a battery is employed for the power supply. SOLUTION: A power supply circuit 3 discriminates whether a power supply at present employs an AC adaptor 1 or a battery 2 and gives a discrimination signal 4 to a system controller 5. In the case of receiving power supply from the AC adaptor 1, a timer reservation from a reservation input device 12 is accepted. In the case of receiving power from the battery 2, the controller 5 accepts video recording reservation when the time of video recording is within a TV video recording available time by the battery but inhibits the time exceeds the available time. Furthermore, in the case of reservation video recording, a control signal 9 is used to activate a TV tuner 6, a signal processing circuit 7, a recorder 8 but a liquid crystal display device 10 and a back light inverter 11 are inactive to reduce the power consumption at reservation video recording thereby extending the battery duration time.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a VTR integrated video camera having a TV tuner and a timer recording function.

[0002]

2. Description of the Related Art A timer recording function is mounted on a stationary VTR that uses a commercial power source, and no VTR integrated video camera has a timer recording function for a TV.

[0003]

Recently, a video camera having a liquid crystal monitor of about 4 inches has been accepted in the market. By providing a liquid crystal monitor, a video camera and a TV tuner can be combined and used as a tele video.

The present invention aims at preventing timer recording failure due to running out of battery during timer recording in a VTR integrated video camera with a TV tuner equipped with a liquid crystal monitor and a timer recording function. The purpose is to provide a camera.

[0005]

In order to achieve the above object, the present invention is based on the fact that the power source supplied to the set is a battery.
It can be solved by judging whether it is a C adapter, controlling the reception of timer recording, the recording time, and the operation during recording.

According to the present invention, the type of set power supply is discriminated, timer recording is normally performed when the power is supplied by the AC adapter, and the power is cut off during timer recording when the power is supplied by the battery. To prevent the action.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows an example of the operation flow of the present invention. When the user starts timer reservation, the power supply is AC
Determine if it is an adapter and if so, accept timer reservation. If not, the reservation is prohibited.

FIG. 2 shows a circuit block diagram in the present invention. The power supply of the set can be connected to the AC adapter 1 and the battery 2. The power supply circuit 3 determines whether the current power supply is an AC adapter or a battery, and sends the determination signal 4 to the system controller 5. If both the AC adapter 1 and the battery 2 are connected, the power supply circuit 3 receives power only from the AC adapter 1, and the determination signal 4 sends a signal that the AC adapter is connected to the system controller 5.
The system controller 5 receives the determination signal indicating whether the AC adapter is connected, and accepts the timer reservation from the reservation input device 12. At the recording start time, the system controller 5 turns on the power supply 3 by the system control signal 9, controls the TV tuner 6, the signal processing circuit 7, and the recording device 8 to start recording, and when the recording end time comes, the entire system is turned off. .

FIG. 3 shows a flow of a method for limiting the recording time when the power source used is a battery. When the power supply is an AC adapter, the timer reservation is accepted as it is.

In the case of a battery, the reserved recording time is limited.
For example, if the TV recording time with a fully charged battery is 70 minutes, the recording time limit is 60 minutes, and if the recording reservation is made for a longer time, the reservation is not accepted and the recording reservation is accepted only for the reservation time within 60 minutes. As a result, it is possible to prevent a recording failure due to the battery running out during recording.

Further, in the block diagram shown in FIG. 2, the system control signal 9 from the system controller 5 at the time of reserved recording.
Thus, the TV tuner 6, the signal processing circuit 7, and the recording device 8 are operated, and the liquid crystal display circuit 10 and the backlight inverter 11 are turned off. As a result, the power consumption during reserved recording is reduced and the battery duration is extended to prevent recording failure due to battery exhaustion during recording.

[0012]

According to the present invention, a T having a liquid crystal display screen is provided.
It is possible to prevent the recording failure due to the battery exhaustion at the timer reservation recording in the VTR integrated video camera with the V tuner.

[Brief description of drawings]

FIG. 1 is a flowchart of an operation showing an example of the present invention.

FIG. 2 is a block diagram of a circuit illustrating an example of the present invention.

FIG. 3 is a flowchart of an operation showing an example of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... AC adapter, 2 ... Battery, 3 ... Power supply circuit, 4 ... Battery / AC adapter discrimination signal, 5 ... System controller, 6 ... TV tuner, 7 ... Signal processing circuit, 8 ... Recording device, 9 ... System control signal, 10 ... Liquid crystal display circuit, 11 ... Backlight inverter, 12 ... Timer reservation input device.

Claims (3)

[Claims] 1. A VTR-integrated video camera equipped with a TV tuner, a timer recording function, and a display unit capable of screen display, in which timer recording is prohibited when the power supplied to the set is a battery, and is limited only when an AC adapter is connected. VTR integrated video camera with TV tuner. 2. A TV tuner for displaying an error when a recording time is limited when the power supplied to the set is the battery and an attempt is made to record for a time longer than the recordable time by the battery according to claim 1. VTR integrated video camera. 3. The TV according to claim 1, wherein power saving is performed by turning off the power of the screen display during the timer recording, and recording failure due to battery exhaustion during recording is prevented.
VTR integrated video camera with tuner.