JPH03163962A - Remote control transmitter for television receiver - Google Patents

Abstract

PURPOSE:To attain remote control transmitter with ease of operation by storing a control code used by a device whose use is estimated for a read only memory of a remote control transmitter so as to set the control code of the device. CONSTITUTION:A device code is extracted from a remote control signal outputted from a remote controller 30 of an AV device connecting to an external input terminal of a television receiver selected by an external input selection key and the device code is stored in a nonvolatile memory in a control section 10 corresponding to the key. Moreover, the device code corresponding to the number inputted by the operation of the key provided to a remote control transmitter is stored in a nonvolatile memory corresponding to the external input selection key of the television receiver. In the normal mode, a control signal selecting the external input terminal designated by the television receiver with the external input selection key operation is outputted and the device code of the AV equipment assigned to the key is selected.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a remote control transmitter for an AV system comprising a television receiver and a plurality of television signal source devices from different manufacturers.

[Conventional technology]

A remote control transmitter for television is equipped with control keys for VTR, etc., and the VT. Set the model number that corresponds to the manufacturer and model of R etc., and use the control key 1 for multiple devices from multiple manufacturers stored in advance in the read-only memory by operating the same control key. It selects a control code group for the device, reads out the control code corresponding to the operated control key from the control code group, and outputs it as an infrared remote control signal.

It is also equipped with an infrared remote control signal receiving circuit that receives infrared remote control signals output from other remote control transmitters, stores the control signal of the same remote control signal in the nonvolatile memory corresponding to the specified control key, and stores the control signal of the same remote control signal in the nonvolatile memory corresponding to the specified control key. When operated, the control signal stored in the nonvolatile memory corresponding to the control key was read out and output as an infrared remote control signal to control the corresponding equipment.

[The problem that the idea aims to solve]

For television remote control transmitters equipped with control keys for VTRs, etc., that control multiple VTRs, etc. by changing the slide switch, the television receiver and VTR, etc. are limited to equipment from the same manufacturer. It was necessary to confirm the selected device and then select the external input of the television receiver to which the output of the device was connected.

With a remote control transmitter that sets the model number corresponding to the manufacturer and model of the signal source device such as a VTR, and reads and outputs the control code stored in the read-only memory in advance, it is possible to control only one VTR, etc. there were.

In addition, in so-called learning remote control transmitters that receive remote control signals output by operating the keys of a remote control transmitter such as a VTR, and store and use the read control code, all control keys used can be controlled in the same way. This method requires the output of a remote control signal for a VTR or the like corresponding to a key and the operation of storing the same signal, which is troublesome.

[Means for solving the problem] The control unit of the remote control transmitter set to pre-sevent mode reads the remote control signal output from other remote control transmitters via the remote control signal receiving unit, and selects the external input of the television receiver. The model code constituting the signal is stored in advance in the nonvolatile memory corresponding to the key.

The read-only memory in the control unit has V expected to be used.
A model code such as a TR and a series of control codes for controlling the same VTR etc. are stored in advance.

By operating an external input selection key on the television receiver, a control signal for the television receiver corresponding to the key is output as an infrared remote control signal, and by subsequent operation of a control key on a VTR, etc., the control signal corresponding to the external input selection key is output. The control code corresponding to the control key in which the control code of the VTR or the like stored in the nonvolatile memory matches the model code stored in the read-only memory is read out and output as an infrared remote control signal.

[Function] The control unit 10 of the remote control transmitter receives power from the battery 27, and when there is no input from the operation key 20, the current consumption is small and the control unit 10 waits for input from the operation key 20 and enters a dormant state.

When the control unit 10 detects the operation of the operation key 20,
The control unit 10 is released from the hibernation state, enters the active state, and executes the processing procedure stored in the control unit 10.

The control unit 10 reads the control signal corresponding to the key from the memory according to the processing procedure of the operated key, drives the infrared diode 25 via the transistor 24 with the output control signal, and generates infrared rays by the light emission of the diode. A remote control signal 26 is output.

Control unit IO shifted to preset mode by key operation
executes the processing procedure shown in FIG. 3, and reserves a reference memory area corresponding to the external input terminal of the television receiver selected by the remote control transmitter in the nonvolatile memory 14 in the control section 10.

A dedicated remote control transmitter 30 for the AVI device connected to the external input terminal of the television receiver selected by the remote control transmitter
remote control signal 31 for controlling any of the same AV devices.
is output, and the remote control signal is read through the remote control signal receiving section 21 connected to the control section IO.

From the read remote control signal 9a, extract the model code representing the manufacturer and model of the AV equipment that constitutes the signal, and store it in the reference memory area corresponding to the selected external input secured in the nonvolatile memory I4. .

When storing the model code in the non-volatile memory l4,
It is checked whether a series of control codes 1. related to the same model code have been stored in advance in the read-only memory 12 in the control unit 10, and only the model code for which the related control codes 1. have been stored is checked. Remember.

In the normal operation mode, the position of the external input of the television receiver selected by the remote control transmitter is memorized, and when the control keys of the external AV equipment are operated, the non-volatile memory 14 corresponding to the operation keys of the external operator's saw is referenced. Reads the model code of the external AV device stored in memory.

Based on the model code read from the non-volatile memory l4, a series of control codes pre-stored in the read-only memory 12 in the control unit 10 related to the same model code 1.
Selects the control code corresponding to the operated control key and outputs it as a control signal along with the same model code.

〔Example〕

An embodiment of the present invention will be described with reference to FIG.

Power is supplied from a battery 27 to a one-chip/two-chip microcomputer that constitutes the control section 10 of the remote control transmitter.

Is the control key 20 provided in the remote control transmitter the same as the control key 20? !
Connect to input port I5 in I1 section 10, doujin capo 1
-75, the operation of any of the control keys 20 is detected, and the control section 10, which is in the dormant state, is brought into operation.

The control unit 10 in the activated state identifies the input control key 2o, reads out the control signal corresponding to the control key 20 from the read-only memory I2, and outputs it via the output port 16 in the control unit 1o.

The control signal output from the output port l6 of the control unit IO is supplied to the base of the transistor 24 via the current limiting resistor 22, and the infrared light emitting diode 25 connected in series with the current limiting resistor 23 to the collector of the transistor 24.
to drive.

Light emitting diode 2 driven by the transistor 24
5 outputs an infrared signal 26 corresponding to the current supplied from the battery 27 and flowing through the light emitting diode 25.

By operating the preset key, the control section 10 The processing procedure of the brisset mode shown in FIG. 3 is executed.

From the remote control signal output from the remote controller 30 of the AVi device connected to the external input terminal of the television set selected from the first external input selection key, extract the model code that controls the signal. The control unit 1o corresponding to the same key
The same model code is stored in the internal non-volatile memory.

Further, the model code corresponding to the number inputted by operating a key provided on the remote control transmitter can also be stored in the nonvolatile memory corresponding to the external input selection key of the television receiver.

In the normal operation mode, the external input selection key is operated to issue a control signal for selecting a designated external input terminal of the television receiver, and to switch the model code of the AV equipment assigned to the key.

By subsequently operating a control key on the external device, a control code corresponding to the operated control key is output as a control signal along with the model code of the AV device corresponding to the external input selection key specified last.

〔Effect of the invention〕

As described above, even if the device is not manufactured by the same manufacturer as the TV receiver, it can be used as a signal source device for an AV system centered around a TV receiver. By memorizing the code, you can easily set the control code for the device, and even if there are multiple devices, you can switch them in conjunction with switching the external input on the TV receiver, making operation easier. Can be used as a remote control transmitter.

[Brief explanation of the drawing]

FIG. 1 is an electric circuit diagram of the present invention, FIG. 2 is a flowchart of a control key input processing procedure, and FIG. 3 is a flowchart of a processing procedure for presen 1 mode. In the figure, 10 is the control unit, II is the CPU, 12 is the read-only memory, l3 is the RAM, 14 is the non-volatile memory, I5 is the input port, and 6 is the same. Output bauds 1 and 2o are control keys, 2 is a remote control signal receiver, 22 to 23 are resistors, 24 is 1 and 25 are
2 is a light emitting diode, 26 is an infrared remote control signal, 27 is a battery, 30 is a remote control transmitter exclusively for AV equipment, and 31 is an infrared remote control signal.

Claims (2)

[Claims] (1) Equipped with a control unit that is activated by operating any key, outputs a control signal corresponding to the operated key from the control unit, drives an infrared light emitting diode with the control signal, and transmits an infrared remote control signal. In a TV remote control transmitter that transmits and remotely controls multiple TV signal source devices, the remote control transmitter includes a remote control signal receiving section, and the model code is included in the received remote control signal output from another remote control transmitter. is stored in advance in the non-volatile memory corresponding to the external input selection key of the TV receiver, and by operating the external input selection key, a control signal is output to the TV receiver corresponding to the key, and then the external input selection key of the TV receiver is output. By operating the control key of the TV signal source device connected to the input terminal, the model code stored in the non-volatile memory corresponding to the external input selection key and the same model code stored in advance in the read-only memory in the control unit are determined. A television remote control transmitter characterized by outputting a control code corresponding to the same control key with which the code matches. (2) The model code stored in the read-only memory corresponding to the number input by a key provided on the remote control transmitter is stored in advance in the nonvolatile memory corresponding to the external input selection key of the television receiver. A television remote control transmitter according to claim (1).