JPS628643A - Adaptor circuit for remote control device - Google Patents

Abstract

PURPOSE:To improve the general purpose properties of the remote control device by converting the signal from a remote control device to the signal in accordance with the control signal mode of video tape recorder of the controlled system and providing the adaptor circuit to convert reversely the signal from the video tape recorder. CONSTITUTION:An adaptor 14 is connected to a connector 12 for connecting the remote control cable of a VTR 10 through a remote control cable. The adaptor (encoder and adapter) 14 is freely attachably and detachably fitted to a video processing device 16, prepared for the type of a VTR 10 and replaced in accordance with the type of the VTR 10. The adaptor 14 has an encoder means to convert the control signal from a main control circuit 20 so as to match with the signal mode of an equivalent VTR 12, and a decoder means to convert respective types of signals from the VTR 12 so as to match with the signal mode of a video processing device 16, and can control remotely the VTR of the different control signal mode with the common remote control device.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a remote control device for a video tape recorder, and particularly to a remote control device for controlling a plurality of video tape recorders with different control signal formats by a common remote control device. Regarding adapter circuits.

[Prior Art] Currently, a plurality of types of video tape recorders have been developed, each with a different form of control signal.

Therefore, in order to remotely control the video tape recorder, a dedicated remote control device has been provided for each type of video tape recorder.

[Problem 1 to be Solved by the Invention As described above, in the conventional technology, there was a problem in that the remote control device for a video tape recorder lacked versatility. The present invention was made in view of these problems, and an object of the present invention is to improve the versatility of a remote control device.

[Means and effects for solving the problem] The adapter circuit according to the present invention converts a signal from a remote control device into a signal according to the control signal form of the video tape recorder to be controlled, and supplies the signal to the video tape recorder. ,
The signal from the video tape recorder is inversely converted and supplied to the remote control device.

[Embodiment] An embodiment of an adapter circuit for a remote control device according to the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram of the entire system in which a remote control device and a video tape recorder are connected via an adapter circuit according to the present invention. In this system, the remote control device receives an output signal from an imaging means (not shown). The explanation will be given assuming that the signal is supplied and incorporated in the video processing device 16 that processes this signal into a signal form suitable for display or recording. The video processing device 16 has a main control circuit 20, and the main control circuit 20 is connected to the adapter 14 according to this embodiment, and the adapter 14 is connected to the remote control of the video tape recorder (hereinafter referred to as VTR) 10 via a remote control cable. It is connected to a connector 12 for cable connection. The adapter 14 is detachably attached to the video processing device 16. The adapter 14 is prepared for each type of VTRl0, and can be replaced depending on the type of VTRl0. The adapter 14 transfers the control signal from the main control circuit 20 to the VTR.
An encoder means converts various signals from the VTR12 to match the signal format of the VTR12, and conversely, a video processing device N16 converts various signals from the VTR12.
It has a decoder means for converting the signal to suit the signal format.

The adapter 14 is housed in a housing 70, as shown in a perspective view in FIG. 6(a). The adapter 14 and the video processing device 16 are connected by inserting the casing 70 into an adapter receptacle 74 provided in the casing 73 of the video processing device 16, as shown in FIG. 6(b). It will be done. A card edge 72 for connection to the video processing device 16 protrudes from one end of the adapter housing 70 . As shown in FIG. 6(b), this card edge 72 is located at a position offset from the center of the cross section of the housing 70 to prevent incorrect insertion.

When the housing 70 is inserted into the adapter receiver 74, the card edge 72 is connected to the card edge connector 76, and the adapter 14 and the video processing device 16 are electrically connected. As shown in FIG. 6(C), a connector pin 78 for connection to the connector 12 is provided on the side surface of the adapter 14 on the VTR side. The connector pin 78 is designed so that a VTR remote control cable can be used.

An operation switch section 22 and a display section 24 are provided on the operation panel on the front surface of the video processing device 16, and these are also connected to the main control circuit 2.
Connected to 0. This operation switch section 22 is a VTR.
0 with switch for remote control of LO
The display section 24 displays the operating mode of the VTR 10, etc. An imaging signal from the imaging means is input to the video processing circuit 26 via the external input terminal 25. The output signal of the video processing circuit 26 is supplied to the first input terminal of the selector 28, and is also supplied to the VTR 10 via the amplifier 30 and recorded.

The reproduced signal output from the VTR l0 is supplied to the second input terminal of the selector 28. The selector 28 is the main control circuit 20
Either the first or second input terminal is connected to the output terminal depending on the signal from the output terminal.

The output signal of selector 28 is supplied to color monitor 18 via amplifier 32 and displayed.

As described above, according to the present invention, V of various control signal forms can be controlled.
Since the VTR and the remote control device are connected through an adapter provided for each TR, VTRs with different control signal formats can be remotely controlled by a common remote control device, improving the versatility of the remote control device.

FIG. 2 is a detailed circuit diagram of a first embodiment of adapter 14. Power supply vCC from the video processing device 16 to the adapter 14
, a remote signal is supplied, and a mode signal is supplied from the adapter 14 to the video processing device 16. The remote signal is a negative pulse signal for switching the operating mode of the VTR 12, and the mode signal is a signal representing the operating mode of the VTR 12. A power supply Vss, GND, and a recording (Rec) code signal are supplied from the VTR10 to the adapter 14, and a recording (Rec) command and a standby command) are supplied from the adapter 14 to the VTRIO. The recording mode signal is a low level signal when the VTR 12 is in the recording mode (including a pause period), and is a high level signal when the VTR 12 is in the playback mode. VTR121*RWM (Rec)
During the period in which the command and standby command are supplied, the recording mode and pause mode are set, respectively.

The power supply Vcc supplied to the adapter 14 is connected to the power supply monitoring IC 4
0, and its output signal is sent to a flip-flop (F/
F) Input to clear terminal CLH of circuit 42. F/F
A remote signal from the video processing device 16 is input to the clock terminal CK of the circuit 42 . The Riki Natsuyama signal from the F/F circuit 42 is input to a photocoupler 48 via a delay circuit 44 and a buffer amplifier 46. The output of the photocoupler 4B is supplied to the VTRL O as a recording command.

The Q output signal of the F/F circuit 42 is input to a photocoupler 52 via a buffer amplifier 50.

The output of the photocoupler 52 is supplied to the VTRIO as a standby command.

The recording mode signal supplied from the VTR10 to the adapter 14 is sent to the first OR gate 56 via the photocoupler 54.
Input to input terminal. The Q output signal of the F/F circuit 42 is input to the second input terminal of the OR gate 56 . O
The output signal of the R gate 56 is supplied to the video processing device 16 as a mode signal.

In FIG. 2, photocouplers 46, 52, and 54 are interposed between the adapter 14 and the VTR 12;
This is to prevent voltage from being applied to the connector pin of the adapter when it is not connected to 2, and to eliminate the risk of accidental contact.Even if the output of the amplifier 46.50 is an open collector output, the same effect can be achieved. can get. Note that an inverted signal of the output signal of the F/F circuit 42 may be supplied to the OR gate 56.

The operation of the adapter 14 according to the first embodiment shown in FIG. 2 will be explained with reference to the timing charts of FIGS. 3(a) to 3(e). As shown in FIG. 3(a), when the power supply Vcc is applied and the power supply monitoring IC 40 detects the rise of the power supply voltage, a negative detection pulse is output from the power supply monitoring IC 40, the F/F circuit 42 is cleared, and the Q output The end becomes high level, and the distortion output end becomes low level. This results in
As shown in FIG. 3(C), the Q output signal of the F/F circuit 42, ie, standby-mant, becomes high level.

The recording command connected to the output terminal of the F/F circuit 42 becomes low level after being delayed by the delay time t caused by the delay circuit 44, as shown in FIG. 3(d).

This delay circuit 44 is provided to ensure that the recording command changes after the standby command.

For this reason, the standby command has priority over the recording command. At this time, the high level standby command causes the VTR10 to enter a pause period as shown in FIG. 3(e). In this state, the video processing device 16
The process continues until a remote signal is received.

Remote signal (negative pulse) as shown in Figure 3(b)
is input from the video processing device 16 to the adapter 14,
The output state of the F/F circuit 42 is inverted, and the standby command, which is the Q output signal of the F/F circuit 42, becomes low level as shown in FIG. 3(C). The recording command is also i/i! as shown in Figure 3(d). The signal becomes high level after a delay of the delay time caused by the delay circuit 44. This results in h
By the high level recording command, the VTRIO enters the recording period as shown in FIG. 3(e). This state continues until the next remote signal is received from the video processing device 16. Similarly, every time a remote signal comes, the F/F circuit 4
The output state of VTR 10 is reversed, the recording command and the standby command are alternately set to high level, and the operation mode of the VTR 10 is alternately set to recording mode and pause mode, as shown in FIG. 3(e).

As shown in FIG. 3(a), even when the supply of power Vcc is stopped and the power supply monitoring IC 40 detects a fall in the power supply voltage, the F/F circuit 42 is cleared and the Q output terminal goes high.
level, the distortion output terminal becomes low level. This is to ensure that when the video processing device (remote control device) 16 stops operating, the VTR 12 also stops recording.

As explained above, according to the first embodiment, V
The operation mode of the TR can be alternately changed to a recording mode and a recording still mode. Note that the operation command specifying this operation mode can be continuously supplied to the VTR' during each operation period.

FIG. 4 is a detailed schematic diagram of a second embodiment of the adapter 14. The first embodiment describes an adapter for controlling a type of VTR in which operating commands must continue to be supplied during each operating mode. On the other hand, in the second embodiment, an adapter for controlling a VTR in which operation commands need only be supplied when switching between operation modes will be described. As in the case of the first embodiment, the video processing device 16
11Vcc and a remote signal are supplied from the adapter 14 to the adapter 14, and a mode signal is supplied from the adapter 14 to the video processing device 16. From the VTR10 to the adapter 14, a recording head operation signal (RECTALLY), a tape running signal (PLAY TALLY), and a pause signal (STIL) are sent.
A tape standstill command (STILL C TALLY) is supplied from the adapter 14 to the VTR 10.
MD) and a tape running command (PLAY CMD) are supplied. The recording head operation signal, tape running signal, and pause signal go from high level to low level at the start of recording head operation, tape running, and pause period, respectively.
It is a signal that changes in level. The tape standstill command and the tape running command are negative pulses that are generated for a predetermined period when the tape stands still and when the tape starts running.

The remote signal supplied to the adapter 14 is an AND game)
It is input to the first input terminal of 60.62.

The output of AND gate 60 is supplied to a first input of AND gate 61. The output signal of the power supply monitoring IC 40 similar to that of the first embodiment is supplied to the second input terminal of the AND game 61. The output of AND gate 61 is supplied to VTR10 as a tape stop command. The output of AND gate 62 is supplied to VTRIO as a tape run command. A recording head operating signal and a tape running signal supplied from the VTR 10 to the adapter 14 are input to an AND gate 64. The output of AND gate 64 is AND gate) 66.7
It is input to the first input terminal of 0. AND gate 66 second
A pause signal is supplied to an input terminal via an inverter 68, and a second input terminal of an AND gate 70 is supplied with the pause signal itself. The output of AND gate 66 is provided to a second input of AND gate 62. AND gate 70
The output is supplied to the second input terminal of the AND game 60, and is also supplied to the video processing device 16 as a mode signal.

The operation of the adapter 14 according to the second embodiment shown in FIG. 4 will be explained with reference to FIGS. 5(a) to 5(h).

As shown in FIG. 5(a), when the power supply Vcc is applied and the power supply monitoring IC 40 detects the rise of the power supply voltage, the output negative pulse signal passes through the AND gate 61, and as shown in FIG. ), a tape stationary coin (negative pulse) is supplied to the VTR 12. As a result, the recording head operating signal from the VTR 12 becomes negative as shown in FIG. 5(f), and a mode signal representing the pause mode is output from the AND gate 70 as shown in FIG. 5(e).

Ru.

At this time, the pause signal is low as shown in Figure 5(b).
Since the output of the AND gate 64 is at a low level, the output of the AND gate 66 is at a high level. Therefore, when a remote signal is generated from the video processing device 16 as shown in FIG. 5(b), this negative pulse signal is output from the AND gate 62, and as shown in FIG. 5(d).
A tape run command is generated as shown in . As a result, the VTR 12 enters the recording mode as shown in FIG. 5(e), and the mode signal is set to la as shown in FIG.
It becomes W level. As shown in Figures 5(g) and 5(h), the tape running signal and pause signal are each at low level.

It becomes high level.

When the next remote signal is supplied from the video processing device 16, since the output of the AND gate 70 is at the low level at this time, the negative pulse remote signal passes through the AND gate 80, and as shown in FIG. ), a negative pulse tape stand still command is generated. Similarly, the AND gates 60 and 62 are alternately turned on each time a remote signal is received.
A tape standstill command and a tape run command are generated alternately.

As shown in FIG. 5(a), even when the supply of power Vcc is stopped and the power monitoring IC 40 detects a fall in the power supply voltage, a tape stop command is output from the AND gate 60 in the same way as when the power is turned on. When the video processing device 16 stops operating, the VTR 12 also stops recording.

As explained above, according to the second embodiment, V
The operation mode of the TR can be alternately changed to a recording mode and a recording still mode. Note that the operation command specifying this operation mode can be supplied to the VTR only when switching between each operation mode.

It should be noted that the present invention is not limited to the embodiments described above, and it goes without saying that the specific configuration of the adapter may be changed depending on the form of the control signal of the VTR.

[Effects of the Invention] As explained above, according to the present invention, the remote pulse from the remote control device is
The versatility of the remote control device can be improved by connecting an adapter that converts the signal into a signal corresponding to the control signal format of the TR.

[Brief explanation of the drawing]

5tstt Block diagram of the entire system including the adapter circuit of the remote control device according to the present invention, 2nd
FIG. 3 is a detailed block diagram of a wIJl embodiment of an adapter circuit for a remote control device according to the present invention.
a) to (e) are timing charts showing the operation of the first embodiment, FIG. 4 is a detailed block diagram of the second embodiment of the adapter circuit of the remote control device according to the present invention, and FIGS. 6h) is a timing chart showing the operation of the second embodiment, and FIGS. 6(a) to 6(C) are diagrams showing the structure of the adapter circuit of the remote control device according to the present invention. 10...Video tape recorder 14...Adapter 16...Video processing device 22...Operation switch unit 42...Flip-flop circuit 44...Delay circuit 48.52.54...Photocoupler 56 ... OR Gate applicant's patent attorney Atsushi Tsuboi N6 diagram (a) (b) (C)

Claims (1)

[Claims] A remote control device that is connected to a remote control device of a video tape recorder, converts the signal from the remote control device into a signal according to the control signal format of the video tape recorder to be controlled, and reverse converts the signal from the video tape recorder. adapter circuit.