JP3355629B2 - Connection device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a plurality of AV (audio-vi
The present invention relates to a device suitable for application when connecting and dubbing devices, for example, a plurality of VTRs.

[0002]

2. Description of the Related Art A video signal input terminal and an audio signal input terminal (hereinafter referred to as video / audio signal input terminal as required) are provided on the front of a recent VTR, and a video signal output terminal is provided on the rear. An audio signal output terminal (hereinafter, referred to as a video / audio signal output terminal as necessary) is provided.

On the other hand, a video signal input / output terminal and an audio signal input / output terminal (hereinafter referred to as a video / audio signal input / output terminal as required) and a video / audio signal input / output An input / output switch is provided for switching the dual-purpose terminal to a video / audio signal input terminal or a video / audio signal output terminal. The video / audio signal input / output terminal is used for the purpose of meeting the demand for a small and lightweight camera-integrated VTR.

Therefore, for example, when a video / audio signal is supplied from a VTR to a camera-integrated VTR and the video / audio signal is to be recorded on a video tape mounted on the camera-integrated VTR, the following is required. Such an operation procedure is required.

First, a video / audio signal output terminal on the back of the VTR and a video / audio signal input / output terminal of the camera-integrated VTR are connected by a connection cable. Next, the input / output switch of the camera-integrated VTR is switched to the input side. Next, by operating the playback key (hereinafter referred to as PB key) on the VTR side and operating the recording key (hereinafter referred to as REC key) on the camera-integrated VTR side, the video / audio signal output terminal of the VTR is supplied. The recorded video / audio signal is recorded on a video tape attached to the camera-integrated VTR.

[0006]

However, according to the above-mentioned prior art, if the operator does not perform the manual operation of switching the input / output switch of the camera-integrated VTR to the input side, the video / video is not recorded on the video tape. There was a problem that an audio signal was not recorded. In addition, there is a problem that it is troublesome for the user to manually switch the input / output switch in such a manner. Furthermore, since the back of the VTR is generally arranged facing a wall or the like, there is a problem that the operation of connecting a connection cable to a video / audio signal output terminal on the back of the VTR is troublesome. In addition, a video / audio signal from the VTR is mounted on the camera-integrated VTR with the video / audio signal input terminal on the front of the VTR connected to the video / audio signal input terminal of the camera-integrated VTR. In some cases, an erroneous operation was attempted to record on a video tape.

[0007] The present invention has been made in view of such problems, and a connection in which a signal input / output terminal is automatically switched to a signal input terminal or a signal output terminal in accordance with the operation state of each AV device. It is intended to provide a device.

[0008]

In order to solve the above problems, the present invention provides a connection device having the following means. That is, a connection device for interconnecting two AV devices, a signal input / output terminal provided for each of a plurality of inputs and outputs of one AV device, A / O on the side connected to the signal I / O terminal and A
A plurality of changeover switches having an input connected to the input terminal of the V device and an output connected to the output terminal of the AV device;
Control means for transmitting a switching control signal to the plurality of changeover switches based on the operation state information of the AV equipment given by an external operation and the operation state information of the other AV equipment transmitted via the communication line; And a communication terminal for connecting a control circuit of the other party's AV device with a communication line. When two AV devices are connected, a signal input / output terminal of one of the AV devices outputs A connection device for an AV device, wherein the control means automatically performs switch switching so that the signal input / output terminal of the other AV device is connected to the input side when the device is connected to the AV device.

[0009]

According to the connection device of the present invention, each of the AV devices 1, 10
Reference numeral 1 denotes communication terminals 21 and 121 and communication terminals 21 and 1
And control circuits 10 and 110 connected to
The communication terminals 21 and 121 of the V devices 1 and 101 are electrically connected to each other, and the control circuit 10 of one AV device 1 operates the operation state information SO ₁ and the communication terminal 2 of the one AV device 1.
1 operating state information S of another AV device 101 supplied from
In accordance with O ₂ , control can be performed so that the signal input / output terminals 2 to 4 are switched to a signal input terminal or a signal output terminal.

[0010]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a connecting device according to an embodiment of the present invention.

In FIG. 1, 1 is AV (audio-visual).
This is a first VTR as a device. 101 is the second VT
R. In the following description, in order to facilitate understanding, it is assumed that the first VTR 1 and the second VTR 101 have the same configuration, and the second VTR 10
The reference numeral of each component in 1 is a code obtained by adding 100 to the reference numeral of each corresponding component of the first VTR 1, and a detailed description thereof will be omitted.

The first VTR 1 is provided with three signal input / output terminals 2 to 4 which are RCA pin connectors. Signal input-output terminal 2, together with an output terminal of the video signal SV ₁ outputted from the first VTR 1, functions as an input terminal of the video signal SV ₂ supplied from the second VTR 101. The signal input / output terminal 3 is
Output terminal of an audio R (right) signal SR1 output from the VTR ₁ of the
Functions as an input terminal of an audio R signal SR ₂ supplied from. The signal input / output terminal 4 is connected to the first VTR 1
With an output terminal of the audio L (left) signal SL ₁ output from, functions as an input terminal of an audio L signal SL ₂ supplied from the second VTR 101.
Incidentally, as the video signal SV ₁ and the audio R signal SR ₁ and the audio L signal SL ₁ first together with video / audio signal SVO _1. Also, as the video signal SV ₂ and audio R signal SR ₂ and an audio L signal SL ₃ second together with the video / audio signal SVO _2.

The signal input / output terminals 2 to 4 are respectively
They are connected to movable contacts 7a to 9a of switches 7 to 9 having one circuit and two contacts. Movable contact 7a~9a is switched by the control signal SC ₁ from the system controller 10 as a control circuit. One fixed contact 7b~9b switches 7-9, respectively, the output amplifier 12 of the video signal SV _1, is connected to the output amplifier 13 and the output amplifier 14 of the audio L signal SL ₁ audio R signal SR _1. The other fixed contacts 7c to 9c of the switches 7 to 9
They are respectively input amplifier 17 of the video signal SV _2, and is connected to the input amplifier 18 and the audio L input amplifier 19 of the signal SL ₂ of the audio R signal SR _2.

The system controller 10 is a microprocessor and has a CPU, a ROM, a RAM, an I / O interface, and the like. The system controller 10 is supplied with an operation state signal SO ₁ of the first VTR 1 based on an operation of a key switch (not shown) arranged on a panel of the first VTR 1, and via a communication terminal 21. Thus, a signal corresponding to the operation state signal SO ₂ of the second VTR 101 is supplied. Here, the operation state signals SO ₁ ,
SO ₂ has a playback (PB) instruction signal corresponding to a key switch arranged on the panel and a pause (PAU) signal, respectively.
SE) signal, a screen fast forward (CUE) signal, a screen reverse fast forward (REV) signal, a recording (REC) signal, and the like.

The first VTR 1 and the second VTR
AV devices such as a video camera (not shown), a tuner (not shown), a television (not shown), and a disc player (not shown) can be connected to 101, respectively. The status signals SO ₁ and SO ₂ include an identification signal indicating which of the AV devices is the operation status signal.

The communication line 31 between the communication terminal 21 and the communication terminal 121 is, for example, a LANC (local appl).
(communication control bus system).

Signal input / output terminals 2-4, 102-10
Four are connected by signal lines 32-34.

Next, the operation of the above embodiment will be described in detail with reference to the operation mode diagram shown in FIG.

In the mode A shown in FIG. 2, in the first VTR 1, a PB (PAU)
SE) key, and CUE key or REV key operation status signal SO ₁ of these is a key input is supplied to the system controller 10, on the other hand, in the the VTR 2, REC (PAUSE) key operation is key input The state signal SO ₂ is supplied to the system controller 110.

In this case, the system controller 10
The second VT supplied from the system controller 110 via the operating state signal SO ₁ and the second communication terminal 21
R101 operating state signal SO ₂ flow of signals from the signal and correspond to F (see FIG. 2) from the first VTR1 second V
It is determined that the flow is to the TR 101 (the direction of the arrow P). Based on this determination, the movable contact 7a~9a switch 7-9 by the control signal SC _1, respectively, connected to the fixed contact 7b~9b side. Thereby, the signal lines 32 to 34, respectively, the output amplifier 12 of the video signal SV ₁ through the signal input-output terminals 2-4 to an output amplifier 13 and the output amplifier 14 of the audio L signal SL ₁ audio R signal SR ₁ Will be connected. In this state, the signal input / output terminals 2 to 4 function as signal output terminals.

On the other hand, the system controller 10 sends a signal corresponding to the operation state signal SO ₁ to the second VTR 10 through the communication terminal 21, the communication line 31 and the communication terminal 121.
1 system controller 110. Therefore, the system controller 110 outputs the signal corresponding to the supplied operation state signal SO ₁ and the second operation state signal SO 1.
Flow F of the signal from the ₂ which is determined to be the direction of the arrow P, on the basis of this determination, the movable contact 107a~109a switches 107-109 by the control signal SC _2, respectively, connected to the fixed contact 107c~109c side I do. Thus, the signal lines 32 to 34, respectively, the input amplifier 117 of the video signal SV ₁ through the signal input-output terminals 102 to 104, the input amplifier 11 of the input amplifier 118 and an audio L signal SL ₁ audio R signal SR ₁
9 will be connected. In this state, the signal input / output terminals 102 to 104 function as signal output terminals.

In such a state, for example, by releasing the PAUSE state of the second VTR 101,
A first video / audio signal SVO1 output from the first VTR ₁ is recorded on a video tape (not shown) mounted on the second VTR 101. The second VTR
The release information of the PAUSE state of 101 includes the operation state signal S
Since the system controller 10 is supplied to the system controller 10 through the system controller 110 and the communication line 31 based on O ₂ , the system controller 10
01, the PAUSE state of the first VTR 1 is released in synchronization with the PAUSE release state of the first VTR 1, and the first VTR 1 is set to the PB
State.

As described above, in the mode A, the switches 7 to 9 and the switch 1 are controlled by the system controllers 10 and 110 according to the signal flow F (in the direction of the arrow P).
07 to 109 are automatically switched to the first VTR.
The signal input / output terminals 2 to 4 of 1 are signal output terminals,
On the other hand, the signal input / output terminal 102 of the second VTR 101
１０４104 are signal input terminals.

Next, in mode B, the first VTR
At 1, a REC key on a panel (not shown) is input by a key and these operation state signals SO ₁ are supplied to the system controller 10. On the other hand, at the second VTR 2, a PB key is input by a key and the operation state signal is outputted. SO
₂ is supplied to the system controller 110.

In this mode B, the signal flow F is changed by the system controllers 10 and 101 to the second VTR 101.
Is determined to be the flow Q from the second VTR 1 to the second VTR 1, the movable contacts 7a to 9a of the switches 7 to 9 are connected to the fixed contacts 7c to 9c, and the movable contacts 107a to 109a of the switches 107 to 109 are fixed. Contact points 107b to 109b
Connected to.

Therefore, in mode B, the second VTR
The second video / audio signal S output from 101
VO ₂ is recorded on a video tape (not shown) mounted on the first VTR 1.

As described above, in the mode B, the switches 7 to 9 and the switch 1 are controlled by the system controllers 10 and 100 in accordance with the signal flow F (in the direction of arrow Q).
07 to 109 are automatically switched to the first VTR.
1 signal input / output terminals 2 to 4 are signal input terminals,
On the other hand, the signal input / output terminal 102 of the second VTR 101
Reference numerals 104 are signal output terminals.

Mode C is a mode in which the PB key is input to both VTRs 1 and 101 by a user's erroneous operation. In this case, the system controller 10,
101 determines from the operation state signals SO ₁ and SO ₂ that the operation is an erroneous operation, and displays information indicating the erroneous operation on a display. For example, "both VTRs are PB
The operation has been stopped because the key has been entered. Is displayed.
In response to this warning, the operator can release the erroneous operation state. Since the signal flow F is not specified, FIG.
In the middle, it is indicated by the symbol “* 1”.

The mode D is a mode in which both the VTRs 1 and 101 are input with the REC key.
In this case, for example, when a video / audio signal is supplied from a tuner (not shown), a video camera (not shown), or another VTR (not shown), the video / audio signal is supplied. The operations of both VTRs 1 and 101 are controlled by the system controllers 10 and 110 so as to perform the REC operation. This mode D
Is particularly effective for dubbing operation. Since the signal flow F changes depending on which VTR 1 or 101 is connected to another VTR or the like, the symbol “*” in FIG.
2 ".

As described above, according to the above-described embodiment, the communication terminals 21, 121 are connected to the first and second VTRs 1, 101.
And system controllers 1 and 110 connected to the communication terminals 21 and 121, and the first and second VTs are provided.
The communication terminals 21 and 121 of R1 and 101 are electrically connected to each other by a communication line 31. Then, the system controller 10 of one of the VTRs, for example, the first VTR 1 outputs the operating state signal SO ₁ of the first VTR ₁ and the operating state signal SO ₂ of the second VTR 101 supplied from the communication terminal 21. Control is performed so that the signal input / output terminals 2 to 4 are automatically switched to the signal input terminal or the signal output terminal in accordance with the corresponding signal. Therefore, the complexity of the operation as described in the section of the related art is eliminated, and a malfunction due to a wrong connection or a wrong operation does not occur.

When the communication line 31 is not used,
The first and second VTRs 1 and 101 automatically switch the switches 7 to 7 in response to the operation state signals SO ₁ and SO ₂ , respectively.
9, 107-109 may be switched, or switches 7-9, 107-109 may be manually operated.
May be switched.

In the above-described embodiment, the connection device for the VTR has been described. However, the same effect can be obtained by applying the invention to a television or an AV selector, not limited to the VTR.

Further, the present invention is not limited to the above-described embodiment, but can adopt various configurations without departing from the gist of the present invention.

[0034]

As described above, according to the connection apparatus of the present invention, each AV device is provided with a communication terminal and a control circuit connected to the communication terminal, and the communication terminals of each AV device are connected to each other. Electrically connected, the control circuit of one AV device is
Control so that the signal input / output terminal is switched to the signal input terminal or the signal output terminal according to the operation state information of the one AV device and the operation state information of the other AV device supplied from the communication terminal. are doing. Therefore, there is an effect that the signal input / output terminal can be automatically switched to the signal input terminal or the signal output terminal according to the operation state of each AV device.

[Brief description of the drawings]

FIG. 1 is a diagram showing the configuration of an embodiment of a connection device according to the present invention.

FIG. 2 is a diagram used for explaining the operation of the connection device shown in FIG. 1;

[Description of Signs] 1,101 First and second VTRs 2-4, 102-104 Signal input / output terminal 10,110 System controller 21,121 Communication terminal

Continuation of the front page (56) References JP-A-2-109443 (JP, A) JP-A-63-300464 (JP, A) JP-A-2-98869 (JP, A) JP-A-1-109855 (JP) , U) Japanese Patent Application No. 1-110330 (Japanese Utility Model Application Publication No. 3-49663) Microfilm (JP, U) photographing the contents of the specification and drawings attached to the application (58) Field surveyed (Int. . ^7, DB name) G11B 20/00 - 20/04

Claims (1)

(57) [Claims] 1. A connection device for interconnecting two AV devices, wherein one signal input / output terminal is provided for each of a plurality of inputs / outputs of one AV device. A plurality of changeover switches each having an input / output connected to the signal input / output terminal, an input connected to an input terminal of the AV device, and an output connected to an output terminal of the AV device; Control means for sending a switching control signal to the plurality of changeover switches based on the given operation state information of the AV device and the operation state information of the partner AV device transmitted via the communication line; A communication terminal for connecting to a control means of the AV device by a communication line, and when two AV devices are connected, a signal input / output terminal of one AV device is connected to an output side. Other time A of
A connection device for AV equipment, wherein the control means automatically performs switch switching so that a signal input / output terminal of the V equipment is connected to an input side.