JPS61284889A - Portable video tape recorder system - Google Patents

Abstract

PURPOSE:To make the most of advantages of both an integrated type and a separated type by separating each part of a video tape recorder, a tuner timer, an AC adaptor, a camera, and a battery, respectively, so that each of them can be attached and detached in the side face. CONSTITUTION:When executing camera-photographing outdoors, a camera 5, a video tape recorder 3 and a battery 4 are combined and used. In case when an AC power source is available indoors, an AC adaptor 1 is used instead of the battery 4. In case when this system has been brought home from the open air, it is connected to a tuner timer 2, the AC adaptor 1 and the video tape recorder 3, and reproduction or recording/reproduction of a television signal is executed. Also, it is connected to the tuner timer 2 and the AC adaptor 1, in a state that the battery 4 remains connected to the video tape recorder 3. When the video tape recorder 3 and the tuner timer 2 are not used, this system can be used for charging the battery 4 by connecting the battery 4 to the AC adaptor 1.

Description

TECHNICAL FIELD The present invention relates to video tape recorders (VTRs).

(Prior art) A conventional video tape recorder uses a tuner timer and an AC
Since the adapter was an integrated type in the same case,
There was no freedom in combinations. Some AC adapters had the same shape as the batteries, but they could not be combined with tuners.

In addition, in conventional portable video tape recorders, the video tape recorder and camera were separated and connected by a cord, but in the case of the 8 mm video tape recorder, the camera and video tape recorder are both connected. As devices become smaller, it has become more convenient to use them in an integrated manner. However, when the video tape recorder is brought home, it is difficult to connect a tuner or the like to the integrated video tape recorder.

(Objective) The present invention separates a video tape recorder system into various parts and makes them mutually attachable and detachable.

The purpose is to take advantage of the advantages of both integrated and separate types.

(Structure) In the portable video tape recorder system of the present invention, each part of the video tape recorder, tuner timer, AC adapter, camera, and battery is formed separately, and each part is detachable from the side. It is characterized by the fact that

Examples will be specifically described below.

FIG. 1 depicts all parts of one embodiment of a portable video tape recorder system.

1 is the AC adapter, 2 is the tuner timer.

3 is a video tape recorder, 4 is a battery, and 5 is a camera. These can be connected and fixed to each other by attaching hooks to the sides, for example, and can also be separated. .

The AC adapter l includes a stabilized power source 11 and a charging circuit 12. 13 is an on/off switch for the stabilized power supply 11, and 14 is an on/off switch for the charging circuit 12.

There are four connection terminals 15 on one side of the ACC adapter 1.
a, 15b, 15c, and 15d are provided. 15a
is a ground terminal, 15b is a charging terminal connected to the charging circuit 12, 15c is a power supply terminal connected to the stabilized power supply 11, 1
5d is a charging sensor terminal connected to the charging circuit 12.

There are two connection terminals 16 on the other side of the ACC adapter 1.
a and 16c are provided. 16a is a ground terminal,
16c is a power supply terminal connected to the stabilized power supply 11.

Ground terminals 15a and 16a are provided at the same height, and charging terminal 15b and power supply terminal 16c are provided at the same height.

A ground terminal 21 is provided on one side of the tuner timer 2.
a, a charging terminal 21b, a power terminal 21c, and a charging sensor terminal 21d are provided, and a ground terminal 22a, a charging terminal 22b, a power terminal 22c, and a charging sensor terminal 22d are provided at corresponding height positions on the other side. ing.

The tuner timer 2 is connected between charging terminals 21b and 22b, between power terminals 21c and 22c, and between charging sensor terminals 21d and 22d to form a pass circuit so that it can be used on both sides. .

Tuner timer 2 includes tuner 23 and RF adapter 24
, a control unit 25 and a DC separation circuit 26, each with a 12-bin connector 27 of 8mm video standard.
It is designed to be connected to a video tape recorder 3 via.

Tuner timer 2 has an external video input terminal of 28V.
, audio input terminal 28A, external video output terminal 29V, audio output terminal 29A, antenna terminal 30
, 31, and a connection terminal 33 to a television receiver (TV) 32. 34 and 35 are distributors that distribute signals from the antenna to the tuner 23 and the television receiver 32.

The control unit 25 has a power terminal 21c or 22c
It receives power supply from the DC separation circuit 26, and receives a mode switching DC signal sent together with the audio signal from the DC separation circuit 26.

Control unit 25 also. timer switch S
Control W5 to control the power supply to each part, switch S
It controls input/output signals by controlling W4, receives a signal from switch 36, controls switch SW7, and switches signals sent to television receiver 32.

A ground terminal 41a, a charging terminal 41b, a power supply terminal 41C, and a charging sensor terminal 41d are provided on one side of the video tape recorder 3.

The other side of the video tape recorder 3 includes a ground terminal 42a, a charging/power terminal 42b, and a charging sensor terminal 42d.
However, the terminals 41a, 41b, 41d on one side respectively
It is located at a height corresponding to

43 is a relay, a charging/power supply terminal 42b is connected to the fixed contact of the switch SW3, a power supply terminal 41c is connected to one movable contact P via a diode D+, and a diode D2 is connected to the other movable contact Q. Power terminal 4 through
1b is connected.

Thereby, the charging/power terminal 42b is connected to the charging terminal 41b or the power terminal 41c by the relay 43. In addition, the coil of the relay 43 is connected to the surface terminal 41.
diodes D3.b and 41c, respectively. It is connected via D4. As a result, when voltage exists at the power supply terminal 41c or the charging terminal 41b, the relay 43 operates and the terminal 42b is connected to the contact Q side, and when there is no voltage at the power supply terminal 41c or the charging terminal 41b, the relay 43 does not operate. The first terminal 42b is connected to the contact P side.

Charge sensor terminals 41d and 42d are connected to each other to form a pass circuit.

The video tape recorder 3 includes a video circuit 44, an audio circuit 45, a servo control circuit 46, and a system control circuit 47, each of which has a length of 8 m.
It is designed to be connected to the tuner timer 2 or the camera 5 via a 12-bin connector 48 of the m-video standard.

The system control circuit 47 controls the operation mode of the tuner timer 1 or the camera 5 connected via the connector 48, and also controls the input/output of audio signals with a switch SWl, and controls the switch SW2 with a signal from the switch 49. to control the power supply to the inside of the video tape recorder 3.

The servo control circuit 46 controls the rotation of the herad motor 50 and the capstan motor 51'.

A ground terminal 52a, a charge/power supply terminal 52b, and a charge sensor terminal 52d are provided on one side of the battery 4. A storage battery 53 and a breaker 54 are connected in series between the terminals 52a and 52b. Terminal 52d is connected via thermostat 55 to a circuit between terminals 52a and 52d.

Camera 5 includes a video camera 61 and a viewfinder 62
, micro 3, and these input/output signals, control signals, power supply, etc. are exchanged with the video tape recorder 3 via a 12-bin connector 65 of 8 mm standard.

64 is an earphone, which is connected to the audio line via the switch SWs.

In the AC adapter 1, tuner timer 2, video tape recorder 3, and battery 4, each terminal 15a
, 16a, 21a, 22a, 41a, 42a, 52a are at the same height, and the terminals 15b, 16c, 21b, 2
The heights of positions 2b, 41b, 42b, and 52b are equal;
Terminal 15c.

The heights of the terminals 21c, 22e, and 41c are the same, and the heights of the terminals 15d, 21d, 22d, 41d, 42d, and 52d are the same. When the sides of these terminals are brought into contact with each other, the corresponding terminals are connected between the sides of each other.

Examples of use of various combinations of this embodiment will be explained below with reference to FIG. 2.

When shooting outdoors, use camera 5. as shown in the same figure (C). A video tape recorder 3 and a battery 4 are used in combination.

If there is an AC power source indoors, use the AC adapter 1 instead of the battery 4 ((D) in the same figure).

If you bring it home from the field, set the tuner timer 2. as shown in the figure (A). It is connected to an AC adapter 1 and a video tape recorder 3 for playback or recording and playback of television signals.

Also, if you connect the tuner timer 2 and AC adapter 1 with the battery 4 connected to the video tape recorder 3,
The result will be as shown in Figure (B).

When the video tape recorder 3 or tuner timer 2 is not in use, the battery 4 can be connected to the AC adapter 1 as shown in FIG.

In addition, combinations of AC adapter 1° and video tape recorder 3, combinations of AC adapter 1, video tape recorder 3, and battery 4, or combinations of AC adapter 1 and tuner timer 2, etc. are also possible.

Some of these combinations will be explained in more detail using circuit diagrams.

Figure 3 shows the case where it is used as a stationary type.

Connect the power stabilized by AC adapter 1 to terminal 15c.
supply more. The on/off operation is performed using switch 13 of the AC adapter.In VTR3, the power that has passed through tuner timer 2 passes through diode D1, and is turned on/off using SW2.
It will be turned off. Since relay 43 is turned on through diode D4 and SW3 is connected to the Q side, power from battery 4 is not supplied.

When controlling on/off using a timer, the switch 13 of the AC adapter 1 is always kept on.

Power for the timer is supplied from the terminal 21c, and when the timer is turned on, the SWs are turned on, and the power to each part of the tuner timer 2 is turned on. Also.

When the tuner timer 2 is turned on, even if the switch SW2 of the video tape recorder 3 is turned off, the tuner timer 2 is connected via the 12th pin of the connector 48.27.
Power is supplied to the video tape recorder 3 from the power source, and the video tape recorder 3 operates.

If it is desired to charge the battery 4 in this combination, the charge switch 14 of the AC adapter 1 is turned on. As a result, charging power is supplied to the charging terminal 15b, and the power terminal 15c is turned off. Therefore, terminal 21b
, 22b, 41b.

Relay 43 is turned on through diode D3 and SW3
are connected to the Q side, and terminals 21. b, 22b.

A charging current flows to the lid battery 53 through the capacitor 41b, the diode D2, and the terminals 42b and 52b. When charging is completed, the thermostat 55 is turned off, and the terminals 52d, 42d, 4
The internal circuit of the AC adapter 1 is controlled through 1d, 22d, 21d, and 15d to turn off the charging circuit 12.

Figure 4 shows a camera 5, a videotape recorder 3, and a battery 4.
This is an example of using a combination of

Power is supplied from the terminal 52b of the battery 4. relay 43
Since the switch SW3 is off, the switch SW3 is connected to the P side, and the video tape recorder 3 is operated by being on/off controlled by the switch SW2.

All power, signals and controls for camera 5 are connected to video tape recorder 3 via 12P connector 65.48. In this case, the d terminal is not used.

FIG. 5 shows an example in which an AC adapter 1 is used in place of the battery 4 in FIG. 4. Power is supplied from terminal 16c. The operation is the same as in FIG.

Figure 6 shows the combination of AC adapter 1 and battery 4, a
, b, and d terminals, and the operation is the same as the explanation regarding charging in FIG.

According to this embodiment, when the AC adapter 1, tuner timer 2, video tape recorder 3, and battery 4° are mechanically connected on the side, electrical connections are also made between the corresponding terminals, so it can be used for power supply, etc. Eliminates the need for cords for electrical connections. Additionally, since signals and controls are connected using separate connectors, standard cameras can be connected, and products from other companies can also be connected.

(Effects) According to the present invention, a video tape recorder system having first-order advantages can be realized.

(1) It can satisfy all uses.

(2) In particular, unlike a camera-integrated video tape recorder, it can also be played back, so the cost of the entire system is low.

(3) There is no need to take unnecessary items with you, such as when taking it outdoors.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing one embodiment of the present invention, and FIG. 2 (
A) to (E) are perspective views showing examples of various combinations, and FIGS. 3 to 6 are block diagrams showing examples of various combinations, respectively. 1...AC adapter, 2...Tuner timer, 3...Video tape recorder, 4...
Battery, 5... Camera. 15a-15d, 16a, 16c, 21a-21d, 2
2a-22d, 41a-41d. 42a, 42b, 42d, 52a, 52b. 52d...Terminal.

Claims (2)

[Claims] (1) Video tape recorder, tuner timer, AC
A portable video tape recorder system characterized in that each part of an adapter, a camera, and a battery are formed separately, and each part is detachable from the side. (2) Each part of the video tape recorder, tuner timer, and AC adapter is provided with connection terminals for signals, power, etc. at positions corresponding to each part on the side where attachment/detachment is performed. A portable videotape recorder system according to claim 1, which is electrically connected at the same time as being connected to the portable video tape recorder system.