JP3282736B2 - Remote control device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[Table of Contents] The present invention will be described in the following order. BACKGROUND OF THE INVENTION Problems to be Solved by the Invention Means for Solving the Problem (FIG. 1) Function (FIG. 1) Embodiment (FIGS. 1 and 2) Effects of the Invention

[0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a remote control device, and is suitably applied to, for example, a remote control device connected to a video tape recorder for controlling ON / OFF of only a recording operation.

[0003]

2. Description of the Related Art Conventionally, in a video tape recorder, in addition to a multifunctional remote control device for controlling complicated operations such as recording, reproduction, fast-forward, rewind, pause, and variable-speed reproduction, a recording operation particularly during recording and editing is performed. There is a remote control device which can be operated at hand only for on / off control.

In practice, this remote control device comprises a recording on / off switch for controlling the recording operation on / off, and an LED display unit for displaying whether or not the recording is in progress, and is used as a wired remote control for a video tape recorder through a stereo plug and a stereo jack. Connected.

[0005]

However, in the remote control device having such a configuration, since it is connected to a video tape recorder through a stereo plug and a stereo jack, a plug of a stereo headphone may be erroneously inserted into the stereo jack. There is.

In this case, since the impedance of the stereo headphone is as low as about several tens of ohms, the video tape recorder determines that it is short, and a malfunction occurs such that the recording ON / OFF switch is turned on and the recording operation is started. . At this time, the video tape recorder simultaneously supplies a drive voltage of, for example, 7 [V], which emits light from the LED display unit to display the recording state, and as a result, there is a problem that the stereo headphone is damaged.

Further, in the remote control device having such a configuration, in order to prevent a malfunction caused by a shutter when a stereo plug is inserted into or removed from the stereo jack, it is necessary to take a time longer than the shutter time to detect the operation of the recording ON / OFF switch. However, as a result, the responsiveness of the recording on / off switch is deteriorated, and the recording timing is shifted.

The present invention has been made in view of the above points, and proposes a remote control device capable of preventing a malfunction when a device other than the remote control handset is connected to the connection means to which the remote control handset is connected. It is assumed that.

[0009]

According to the first aspect of the present invention, a remote controller 4 having a plurality of switch means 4B and a display means 4A is connected through a connecting means 3 to operate the switch means 4B. A remote control device for controlling the predetermined operation of the electronic device 2 on and off and displaying the operation state on the display means 4A detects whether or not the display means 4A is connected, and when the display means 4A is connected. remote control handset 4 determines that are properly connected, monitors the operation state of the switch means 4B, and to supply the display power VB ₁ to the display unit 4A.

Further, in the second invention, a stereo plug and a stereo jack are used as the connection means 3.

[0011]

The presence or absence of connection of the display means 4A of the remote controller 4 having a plurality of switch means 4B and display means 4A is detected. When the display means 4A is connected, the remote controller 4 is correctly connected. it is determined that, monitors the operation state of the switch means 4B, display by which is adapted to supply a display power source VB ₁ in unit 4A, the remote control handset 4 remote handset connection means 3 is connected 4 Malfunctions when other connections are made can be prevented beforehand.

Further, by using a stereo plug and a stereo jack as the connection means 3, for example, when a stereo plug of a stereo headphone is connected, malfunction can be prevented beforehand, and in addition, the stereo headphone itself can be connected. Damage can be effectively avoided.

[0013]

BRIEF DESCRIPTION OF THE DRAWINGS FIG.

In FIG. 1, reference numeral 1 denotes a video tape recorder as a whole according to the present invention, which controls on / off of a video recording operation of a VTR unit 2 by connecting a stereo plug as a connection means and first to third terminals of a stereo jack 3. a, b and c
Can be operated by the remote controller 4 connected through the remote controller. The remote controller 4 is provided with an LED display 4A and a recording on / off switch 4B that are turned on only during recording.

A first terminal a of the stereo jack 3 is grounded, and a second terminal b is connected to a third port A3 of a central processing unit (CPU) 5 for controlling an operation state of the VTR unit 2. Thus, the CPU 5 can detect the operation of the recording ON / OFF switch 4B of the remote controller 4 when the remote controller 4 is correctly connected.

A third terminal c of the stereo jack 3
Is connected to the collector of the transistor Q1 through, for example, a resistor R1 of 50 [Ω]. This transistor Q1
Is connected to a _first power supply VB1 having a voltage value of 7 [V] for driving the LCD display section 4A.

Accordingly, when the CPU 5 is notified from the VTR 2 through the command C1 that it is in the recording state,
The first port A1 is raised to a logic “H” level as tally-on. As a result the transistor Q1 is turned on, with the remote control handset 4 is correctly connected, the first power supply VB ₁ is supplied to the LCD display unit 4A, and thus L
The CD display unit 4A emits light, and the fact that the VTR 2 is in a recording state can be displayed on the remote control slave unit 4.

In this embodiment, the transistor Q1
Between the collector resistor R1 and the third terminal c.
A second power supply VB having a voltage value of 5 [V] through a resistor R2 of, for example, 330 [kΩ] which is much larger than that of the first power supply VB.
With ₂ are applied, the midpoint voltage V ₁ is connected to a second port A2 of the CPU 5. This second port A2
Is an input port for analog digital conversion, whereby the value of the midpoint voltage V ₁ is taken into the CPU 5.

Here, the CPU 5 issues a command C from the VTR 2.
2 when a notification of the recording state is made through the port 1 or when a change in the level of the third port A3 is detected.
The misuse detection processing program SP0 shown in FIG.

[0020] The misuse detection processing program SP0 detects the value of the midpoint voltages V ₁ to be input to the second port A2, LED display unit ahead of the third terminal c of the stereo plug and stereo changer poke 3 In accordance with whether or not the remote controller 4A is present, it is monitored whether or not the remote controller 4 is correctly connected, and it is determined whether or not to monitor the value of the recording on / off switch 4B.

[0021] That CPU5 in step SP1 of the incoming connexion following from misuse detection processing program SP0, the value of the midpoint voltage V ₁ to determine whether the difference is less than 1 [V]. When a stereo headphone, an earphone or the like is actually connected to the stereo jack 3, the same state as when the third terminal c is grounded results in an impedance of 1 [k
Ω] or less at the midpoint voltage V ₁ is the following formula

(Equation 1) The voltage value is represented by As a result, the midpoint voltage V ₁ becomes 1
If it is smaller than [V], it can be recognized that a stereo headphone, an earphone or the like is connected to the stereo jack 3.

Therefore, if the CPU 5 obtains a positive result in step SP1, it does not monitor the recording on / off switch 4B by monitoring the third port A3 and does not output tally-on from the first port A1 even during recording. Transition to the state. Thereafter, the CPU 5 moves to step SP2, creates a command C2 for outputting an alarm, sends it to the VTR 2, and ends the misuse detection processing program SP0 at step SP3.

As a result, the user can recognize from the alarm generated from the VTR 2 that a plug of a stereo headphone or an earphone other than the remote control handset 4 has been plugged into the stereo jack 3 and immediately misuse it. Detect and respond correctly.

[0024] The CPU5 obtains a negative result in the foregoing step SP1, moves connexion to the following step SP4, the value of the midpoint voltage V ₁ is to determine whether greater than 4 [V]. Actually, when the transistor Q1 is turned off and the stereo jack 3 is turned off.
If nothing is connected before the middle point, the midpoint voltage V ₁
It becomes the voltage value 5 of the power supply VB ₂ [V].

If a positive result is obtained in step SP4, since the remote controller 4 is not connected, the monitoring of the recording on / off switch 4B by monitoring the third port A3 is not performed, and the recording is not performed even during recording. The state shifts to a state where tally-on is not output from the first port A1, and the misuse detection processing program SP is executed in step SP3.
Exit 0. Thus, malfunction due to plugging in and out of the stereo jack 3 can be prevented beforehand.

[0026] If the remote control handset 4 is correctly connected, the voltage value of the midpoint voltages V ₁ for pure forward voltage V _F is a voltage value 2 (V) of the LED display unit 4A is 2 [V] become. Accordance connexion CPU5 is a negative result is obtained in step SP4 described above, i.e., the midpoint voltage V ₁ is the voltage value 1 (V) to 4
[V] When it is within the range, it is determined that the remote controller 4 is correctly connected by the presence of the LED display section 4A beyond the third terminal c of the stereo jack 3,
The process moves to step SP5.

In step SP5, the CPU 5 shifts to a state in which the recording on / off switch 4B is monitored by monitoring the third port A3. In step SP3, the misuse detection processing program SP0 ends.

As a result, the CPU 5 issues a command C for controlling the recording on / off in accordance with the state of the recording on / off switch 4B.
2 is transmitted to the VTR 2, and a tally-on is output from the first port A 1 in response to the command C 1 during recording notified from the VTR, thereby controlling the light emission of the LED display unit 4 A of the remote controller 4 to indicate that it is in the recording state. indicate.

According to the above configuration, the LED 3D is connected to the third terminal c of the stereo jack 3 for driving the LED display 4A.
The second voltage of 5 [V] which is equal to or lower than the drive voltage of the display unit 4A
Connect the power supply VB _2, only when Chuden voltage V ₁ of the transistor Q1 is a voltage value of 1 [V] and 4 [V], it is determined that the remote control handset 4 is properly connected, the remote control terminal By controlling the VTR unit 2 in accordance with the operation of the video recorder 4, the video tape recorder 1 can prevent a serious malfunction such as starting a recording operation against the user's will.
Can be realized.

According to a further configuration described above, even when the stereo Hetsudohon or plug, such as the earphone is connected to the stereo changer poke 3, which was detected as not to supply the drive power supply VB ₁ of the LED display unit 4A By doing,
The video tape recorder 1 which can prevent damage to a stereo headphone, an earphone or the like beforehand, and thus can significantly improve the user's convenience can be realized.

In the above-described embodiment, the stereo jack and the stereo plug are used as the connecting means for connecting the remote controller. However, the connecting means is not limited to this, and the switch means and the light emitting means can be connected. The same effects as those of the above-described embodiment can be realized by using various kinds of devices.

Further, in the above-described embodiment, a switch for turning on / off the recording of the VTR is provided as one remote control slave unit.
Although the case where one is provided has been described, the number of switches is not limited to this, and a plurality of switches may also be provided. By doing so, the same effect as in the above-described embodiment can be realized.

Further, in the above-described embodiment, the case where the present invention is applied to the remote control device for controlling the recording on / off of the video tape recorder has been described. However, the present invention is not limited to this, and the predetermined operation of the electronic device is controlled on / off. Any device using a remote control device having a switch means for performing the control and a light emitting means for displaying the control result is suitable for being widely applied to various remote control devices.

[0034]

As described above, according to the present invention, the presence / absence of connection of the display means of a remote controller having a plurality of switch means and display means is detected, and when the display means is connected, the remote controller slave is detected. Is judged to be correctly connected, the operation state of the switch means is monitored, and the display power is supplied to the display means. A remote control device that can prevent a malfunction when the device is connected can be realized.

Further, by using a stereo plug and a stereo jack as the connection means, for example, when a stereo plug of a stereo headphone is connected, malfunction can be prevented beforehand, and the stereo headphone itself can be damaged. Can be realized effectively.

[Brief description of the drawings]

FIG. 1 is a connection diagram showing one embodiment of a video tape recorder using a remote control device according to the present invention.

FIG. 2 is a flowchart showing the misuse detection processing program.

[Explanation of symbols]

1. Video tape recorder 2. VTR section 3.
Stereo jack, 4 ... Remote controller, 4A ... LE
D display, 4B ... Recording on / off switch, 5 ... CP
U.

Claims (2)

(57) [Claims] A remote controller having a plurality of switch means and a display means is connected through a connection means. The operation of the switch means controls a predetermined operation of the electronic device on and off, and displays the operation state on the display means. In the remote control device, the presence or absence of connection of the display means is detected, and when the display means is connected, it is determined that the remote control slave unit is correctly connected, and the operation state of the switch means is monitored. And a display power supply to the display means. 2. The remote control device according to claim 1, wherein a stereo plug and a stereo jack are used as said connection means.