JPH05244665A - Remote control system for electronic unit - Google Patents

Abstract

PURPOSE:To reduce the number of the keys of a transmitter and to individually and remotely control the plural units of the same type by selecting the plural electronic units of the same type, which operate by means of the same control data code, on a transmission-side and changing over a switch circuit in accordance with a selection signal on a reception-side. CONSTITUTION:The selection signal for one electronic unit which is to be remotely operated in the compact disk players 4A and 4B and tape decks 6A-6C of the plural electronic units of the same type, which operate by the same control data code from the transmitter, is received in an amplifier device 1. An output selector 14 is switched in accordance with the selection signal and a data output line for electronic unit to be controlled is connected with the internal part of a data code conversion circuit. The electronic unit which is selected in accordance with a command signal for same type control from the transmitter is remotely controlled. The number of the keys of the transmitter can be reduced and the plural units of the same type can individually and remotely be operated by constitution using the commands for the respective types.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plurality of electronic devices (so-called A / V devices) having acoustic output circuits such as tape decks and television receivers, and a transmitter for remotely controlling each electronic device. The present invention relates to a remote control system for electronic devices, which includes an amplifier device to which each electronic device group is connected, transmits a remote control signal from a transmitter to the amplifier device, and remotely controls each electronic device group via the amplifier device.

[0002]

2. Description of the Related Art In a conventional example of a remote control system for electronic equipment of this type, a so-called command key, which is an operation key for remotely controlling electronic equipment, is provided in a transmitter for transmitting a remote control signal for each electronic equipment. It is provided in. That is, even in the case of a remote control system in which the same model, for example, two tape decks can be connected to the amplifier device, a dedicated command key is provided for each tape deck. And
Even if these command keys are for the same operation function,
The command is different for each tape deck. Taking the fast-forward command key as an example, the fast-forward command key dedicated to one tape deck and the fast-forward command key dedicated to the other tape deck have different commands to be issued when they are operated. on the other hand,
Correspondingly, even if the two tape decks are the same model, they are limited to dedicated products having mutually different control data codes. The tape decks and the like are individually connected to the amplifier device. With such a configuration, when one tape deck is fast-forwarded, when a dedicated fast-forward key is operated, a command corresponding to the key is transmitted and received by the amplifier device. Then, the amplifier device converts the control data code corresponding to the received command and outputs the control data code to the electronic device including each tape deck. At this time, since the control data code of the tape deck is different from that of the other tape deck, only the tape deck operates. When the fast-forward key dedicated to the other tape deck is operated, the same operation causes only the other tape deck to operate. In this way, each tape deck can be individually controlled remotely.

[0003]

However, in the above conventional example, even in a system using a plurality of the same model, since the command key is provided for each device, the number of keys is large and the transmitter The structure is complicated and the cost is increased. Even if the same model is used, since it is limited to a dedicated product, the same general-purpose model cannot be used, which is inconvenient. Therefore, in order to solve such a problem, it is conceivable that the same model is not provided with a command key individually but only one type is provided and a plurality of general-purpose same models are remotely controlled. However, in this way, when the command signal from the transmitter is transmitted to the amplifier device and converted into the control data code corresponding to the command, this control data code is common to each tape deck,
Both tape decks work simultaneously. Therefore, it is not possible to control each tape deck individually, so
Only the stand can be used.

An object of the present invention is to solve the above-mentioned problems, reduce the number of keys of a transmitter, and enable remote control of a plurality of electronic devices of the same model individually. It is to provide a control system.

[0005]

In order to solve the above problems, a feature of the present invention resides in that (A) an electronic device group having an acoustic output circuit is connected to a receiver, and the transmitter is changed from the receiver to the receiver. In a remote control system of an electronic device that transmits a remote control signal and remotely controls each electronic device group via a receiver, (B) the electronic device group is of the same type operating with the same control data code. Including at least several models,
(C) The transmitter has (c1) a selection key for selecting one of the electronic device groups, and (c2) a command key for remote control provided for each different type of the electronic device group. And (D) the receiver is (d1) a receiving circuit for receiving a remote control signal from the transmitter, and (d2)
A data code conversion circuit for converting a remote control signal from the reception circuit into a control data code signal for electronic equipment, (d3)
A switch circuit for selecting one of the control data output lines for guiding the electronic device control data code signal output from the data code conversion circuit to each electronic device group;
4) A switching circuit for switching the switching mode of the switching circuit so that the selected electronic device output line and the data code conversion circuit are connected in response to the operation of the command key of the transmitter. Is.

The selection key may be provided for each electronic device group. Further, the control data output line to the electronic device group may be grouped by different models in the electronic device group. Also, the receiver may be built in any of the electronic devices. Also, the receiver may be an amplifier device. Further, the transmission from the transmitter to the receiver may be optical transmission by infrared rays.

[0007]

According to the present invention, when remotely controlling a plurality of electronic devices of the same model operating with the same control data code, the remote control should be performed by operating the selection key of the transmitter.
Select the electronic device of. That is, when the select key corresponding to the electronic device to be controlled is operated, the select signal is transmitted and received by the receiver. As a result, the switch switching circuit of the receiver switches the switching mode of the switch circuit so that the electronic device control data output line to be controlled and the data code conversion circuit are connected in response to the select signal.

In such a state, the command key for remote control of the electronic device (which is also a command key for controlling other electronic devices of the same model) provided in the transmitter is operated. As a result, the reception circuit of the receiver receives the remote control signal and applies it to the data code conversion circuit to convert the remote control signal into a control data code signal for electronic equipment. Then, the control data code signal is output through the selected output line of the switch circuit. Thereby, the desired electronic device performs the control operation according to the data code signal. When remotely controlling another electronic device of the same model, the electronic device can be remotely controlled by operating the command key after selecting the electronic device with the selection key as in the above. In this way, a plurality of electronic devices of the same model can be individually remotely controlled.

[0009]

1 is a block diagram showing the configuration of an embodiment of the present invention. The remote control system includes an amplifier device 1, an electronic device group 2 connected to the amplifier device 1, and an amplifier device 1.
And a transmitter 3 for transmitting a remote control signal to control the electronic device group 2 via the amplifier device 1. Electronic device group 2
Has an audio output circuit, and in this embodiment, two compact disc players (hereinafter abbreviated as "CD players") 4A, 4B, one tuner 5, and three tape decks 6A, 6B and 6C are used. The control data codes of the CD player 4A and the CD player 4B are
The same, and also tape deck 6A, tape deck 6
The control data codes of B and the tape deck 6C are the same. These electronic device groups 2 distinguish between devices operating with a common command key, and are grouped with devices having different command keys and connected to the amplifier device 1. That is, the CD player 4A, the tuner 5 and the tape deck 6
A is connected to the amplifier device 1 via the common control bus line 9A, and the CD player 4B and the tape deck 6B are connected to the amplifier device 1 via the common control bus line 9B.
The tape deck 6C is connected to the amplifier device 1 via the control bus line 9C. Left and right speakers 7L and 7R are connected to the amplifier device 1.

The amplifier device 1 includes an operating section 10 and a transmitter 3.
A light receiving unit 11 that receives infrared light emitted from the device and demodulates it into a remote control signal, a control unit 12 that is realized by a micro computer, etc., and a switch that selects one of the left and right acoustic signals from the electronic device group 2. Input selectors 13L and 13R as circuits, an output selector 14 as a switch circuit that selects one of the control bus lines 9A to 9C to output a control data code signal to the electronic device group 2, and an amplifier for left and right acoustic signals. 15L and 15R, attenuators 16L and 16R for left and right acoustic signals, and attenuator 16
A volume control circuit 17 for controlling the amount of attenuation of L and 16R to adjust the volume. The input selectors 13L and 13R and the output selector 14 are realized by, for example, a semiconductor switch circuit or the like.

The control section 12 includes a data code conversion section 19 for converting a remote control signal from the light receiving section 11 into a data code for controlling electronic equipment, and an input switching section 20 for controlling the input switching operation of the input selectors 13L, 13R. And an output switching unit 21 that controls the output switching operation of the output selector 14. Further, as clearly shown in FIG. 2, the operation selector 10 has an input selector key K as a selection key for selecting one of the electronic device groups 2.
1 to K6 and a volume adjusting knob 22 are provided. The key K1 is for selecting the CD player 4A, the key K2 is for selecting the CD player 4B, the key K3 is for selecting the tuner 5, the key K4 is for selecting the tape deck 6A, and the key K5 is for the tape deck. 6B for selection, and the key K6 is for selecting the tape deck 6C.

The input selector keys K1 to K6 select the acoustic signal from the electronic device group 2 to select the speakers 7L and 7L.
In addition to being a key for outputting from R, in the present embodiment, it also functions as a key for selecting which electronic device group 2 the control data code signal is output to. That is, for example, when the key K1 is pressed, the pressing operation signal indicates the input switching unit 20 and the output switching unit 21.
The input switching section 20 outputs the selector switching signal to the input selectors 13L and 13R, and the output switching section 21 outputs the selector switching signal to the output selector 1.
4 is derived. As a result, the input selectors 13L, 13
R selects the audio signal input line H1 from the CD player 4A. Further, the output selector 14 selects the common control bus line 9A.

Similarly, when the key K2 is pressed, the input selectors 13L and 13R select the acoustic signal input line H2 from the CD player 4B, and the output selector 14 selects the common control bus line 9B. When the key K3 is pressed, the input selectors 13L and 13R select the acoustic signal input line H3, and the output selector 14 selects the common control bus line 9A. When the key K4 is pressed,
The input selectors 13L and 13R select the acoustic signal input line H4 from the tape deck 6A, and the output selector 14 selects the common control bus line 9A. When the key K5 is pressed, the input selectors 13L and 13R select the acoustic signal input line H5 from the tape deck 6B, and the output selector 14 selects the common control bus line 9B. When the key K6 is pressed, the input selectors 13L, 13R
Selects the acoustic signal input line H6 from the tape deck 6C, and the output selector 14 selects the control bus line 9C.

When the volume adjusting knob 22 is operated, the operation signal is given to the volume control circuit 17, and the attenuation amounts of the attenuators 16L and 16R are controlled according to the operation signal to adjust the volume to a desired volume. It Further, the input switching unit 20, the output switching unit 21, and the volume control circuit 17,
In addition to the operation signal from the operation unit 10, the same operation signal as the operation signal from the operation unit 10 is given via the data code conversion unit 19 by transmission from the transmitter 3 as described later. Has been done. This allows the transmitter 3
The input selector 13L,
13R and the output selector 14 can be switched, and the sound volume can be adjusted by controlling the attenuation amounts of the attenuators 16L and 16R.

FIG. 3 is a partially enlarged plan view of the transmitter. The transmitter 3 includes a power-on key A of the electronic device group 2, input selector keys B1 to B6 corresponding to the input selector keys K1 to K6 of the operation unit 10, a CD player command key group C, and a tape deck command key. A group D and a command key group (not shown) for the tuner 5 are provided. Command key group C includes CD players 4A, 4
Command keys common to B and command key group D are command keys common to tape decks 6A, 6B, and 6C.
In the figure, reference numeral 25 is a transmitting unit that emits infrared rays.

Next, in the remote control system having the above configuration, a processing operation for remotely controlling each electronic equipment group 2 will be described. For example, when remotely controlling the CD player 4A, first, the input selector key B1 on the transmitter 3 side is pressed. As a result, infrared light optically modulated by the operation signal is emitted from the transmitter 3 and is received by the light receiving unit 11 of the amplifier device 1. The light receiving section 11 demodulates into an operation signal, and the demodulated operation signal is passed through the data code conversion section 19 to the input switching section 20 and the output switching section 21.
Are given to each. As a result, the input switching unit 20 and the output switching unit 21 output the selector switching signal corresponding to the operation signal to the input selectors 13L and 13R and the output selector 14. As a result, the input selector 13L,
13R is each acoustic signal input line H1 and attenuator 1
The switching mode is switched so that 6L and 16R are connected to each other, and the output selector 14 switches the switching mode so that the common control bus line 9A and the data code conversion unit 19 are connected.

After the CD player 4A is selected in this way, the command key group C is operated. As a result, infrared light optically modulated by the remote control signal is emitted, received by the light receiving unit 11 of the amplifier device 1 and demodulated, and the demodulated remote control signal is given to the data code conversion unit 19. The data code conversion unit 19 sends the remote control signal to the CD.
A player control data code signal is converted and output.
At this time, the output selector 14 is connected to the common control bus line 9A.
The data code signal is applied to the CD player 4A, the tuner 5 and the tape deck 6A via the common control bus line 9A. At this time, since the data code is a CD player code, only the CD player 4A operates according to the data code. When the CD player 4A is played,
The acoustic signal read from the CD is the acoustic signal input line H1, the attenuators 16L and 16R, and the amplifiers 15L and 1
Sound is output from the left and right speakers 7L and 7R via 5R.

To remotely control the CD player 4B, the input selector key B2 on the transmitter 3 side is pressed to select the CD player 4B, and then the command key group C is operated. In this way, basically, by the processing operation similar to the remote control of the CD player 4A,
The CD data code is given to the CD player 4B and the tape deck 6B via the common control bus line 9B, and only the CD player 4B operates. In this way, the CD players 4A and 4B can be individually controlled remotely.

When the tape decks 6A, 6B and 6C are remotely controlled respectively, by pressing the corresponding one of the input selector keys B4 to B6 on the transmitter 3 side and then operating the command key group D, the CD Players 4A, 4B
Basically, similarly to the above case, each processing can be remotely controlled individually. That is, the tape deck 6A
When is selected, the data code for the tape deck is given to the CD player 4A, the tuner 5 and the tape deck 6A via the common control bus line 9A, and as a result,
Only the tape deck 6A operates. When the tape deck 6B is selected, the tape deck data code is given to the CD player 4B and the tape deck 6B through the common control bus line 9B, and as a result, the tape deck 6
Only B works. When the tape deck 6C is selected, the tape deck data code is given to the tape deck 6C via the control bus line 9C, respectively, and as a result,
Only the tape deck 6B operates. In this way, the tape decks 6A, 6B, and 6C can be individually remotely controlled.

When the tuner 5 is remotely controlled, the input selector key B3 on the transmitter 3 side is pressed, and then a command key group (not shown) for the tuner 5 is operated to open the common control bus line 9A. The tuner data code is given to the tuner 5 via the tuner, and the tuner 5 operates. When remotely controlling the volume of the amplifier device 1,
A volume adjusting key (not shown) of the command key group for the tuner 5 may be operated. By doing so, the remote control signal for volume adjustment is transmitted to the light receiving unit 1 of the amplifier device 1.
1. Volume control circuit 1 via data code converter 19
Given to 7. As a result, the attenuators 16L, 1
The attenuation amount of 6R is adjusted. The keys K1 to K6 of the operation unit 10 of the amplifier device 1 are operated to output the output selector 13
Of course, L and 13R can be selected and the control operation can be directly performed by the operation keys provided in each electronic device group 2, and the acoustic signal can be output from the speakers 7L and 7R.

In the above embodiment, the electronic equipment group 2 is
Although two CD players, one tuner, and three tape decks have been used, the invention is not so limited and other numbers of CD players and the like may be used. Further, the present invention can be suitably implemented in an electronic device system including, for example, a television receiver, a video tape player, etc. other than the CD player, the tuner, and the tape deck. Further, in the above-described embodiment, the amplifier device 1 is
Although it is a single device, it may be built in the electronic device group. Further, although the amplifier device 1 has the function of a receiver in the above-described embodiment, the receiver is a single device, and an electronic device group is connected to this receiver to allow remote control via the receiver. It may be an electronic device system for controlling.

Further, in the above-mentioned embodiment, although the input selector keys on the transmitter 3 side are provided by the number of the audio equipment groups, a single input selector key is provided,
The electronic device group may be selected according to the number of times the input selector key is pressed. Further, the input selector key on the side of the amplifier device 1 may have a single unit with the same configuration. Furthermore, in the above-mentioned embodiment, the optical transmission method by infrared rays is used, but other transmission methods such as ultrasonic waves may be used.

[0023]

As described above, according to the present invention, the command key of the transmitter is provided for each model of different types, the number of keys of the transmitter can be reduced, and the same control data code can be used. Multiple electronic devices of the same model,
Each can be remotely controlled individually. Therefore, the structure of the transmitter can be simplified and the cost can be reduced, and a general-purpose electronic device can be used instead of the system-specific electronic device, and the convenience can be improved.
Further, the number of output terminals of the receiver can be reduced by grouping the control data output lines to the electronic device group by different types of the electronic device group.

[Brief description of drawings]

FIG. 1 is a block diagram showing the configuration of an embodiment of the present invention.

FIG. 2 is an enlarged view of an operation unit.

FIG. 3 is a partially enlarged plan view of a transmitter.

[Code]

1 ... Amplifier device, 2 ... Electronic device group, 3 ... Transmitter, 4A,
4B ... Compact disc player, 5 ... Tuner, 6
A, 6B, 6C ... Tape deck, 9A, 9B, 9C ... Control bus line, 11 ... Light receiving part, 13L, 13R ... Input selector, 14 ... Output selector, 19 ... Data code conversion part, 20 ... Input switching part, 21 ... Output switching section, B1
B6 ... Input selector key, C, D ... Command key group.

Claims (6)

[Claims] 1. (A) An electronic device group having an acoustic output circuit is connected to a receiver, a remote control signal is transmitted from the transmitter to the receiver, and each electronic device group is remotely controlled via the receiver. In a remote control system for electronic equipment, (B) the electronic equipment group includes at least a plurality of models of the same type that operate with the same control data code, (C) the transmitter, (c1) electronic equipment group (C) a selection key for selecting any one of the above, and (c2) a command key for remote control provided for each different type of electronic device group, (D) the receiver, (D1) a receiving circuit for receiving a remote control signal from the transmitter, (d2) a data code converting circuit for converting the remote control signal from the receiving circuit into a control data code signal for electronic equipment, (d3) data code conversion Output from the circuit A switch circuit control data code signal electronics to select one of the control data output lines leading to each of the electronic equipment group that, in response to an operation of the command keys (d4) transmitter,
A remote control system for an electronic device, comprising: a switching circuit that switches a switching mode of the switch circuit so that the selected output line for the electronic device is connected to the data code conversion circuit. 2. The remote control system for electronic equipment according to claim 1, wherein the selection key is provided for each electronic equipment group. 3. A control data output line to an electronic equipment group,
3. The remote control system for audio equipment according to claim 1, wherein different types of electronic equipment are grouped together. 4. The remote control system for electronic equipment according to claim 1, wherein the receiver is built in any one of the electronic equipment groups. 5. The remote control system for electronic equipment according to claim 1, wherein the receiver is an amplifier device. 6. The remote control system for electronic equipment according to claim 1, wherein the transmission from the transmitter to the receiver is optical transmission by infrared rays.