JPH04293396A - Preset remote control transmitter - Google Patents

Abstract

PURPOSE:To control an unspecified equipment by selecting a remote control signal and presetting a remote controller transmitter. CONSTITUTION:In a remote controller transmitter composed of an MPU2 which stores remote control signal data consisting of plural signal forms in a memory 3 and outputs a control signal while referring to the remote control data stored in the memory 3 by means of a key switch operated in a key matrix circuit 1, a preset switch is provided, prescribed remote control signal data can be selected and the remote control signal data corresponding to the operated key switch can be preset by operating the preset switch and then operating the key switch of the key matrix circuit 1, and when the preset switch is operated a display means displaying that the device is being preset comes on.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a remote control transmitter, and more particularly to a preset type remote control transmitter that can control unspecified equipment having a remote control control circuit by presetting a remote control signal. In recent years, there has been an increase in the number of devices that can be operated from a distance using remote controllers, and with the infrared rays that are often used in remote controllers, the remote control signals vary depending on the manufacturer, product, or model. Since it is now necessary to use the same number of remote control transmitters as devices, and remote control operation has become complicated, a learning type remote control transmitter that can control many devices with a single remote control transmitter has been provided. ing.

0002

[Prior Art] In a conventional learning type remote control transmitter, the learning type remote control transmitter is made to learn the carrier frequency and transmission code for each signal of the device-specific remote control transmitter in relation to the command content. Instead of a remote control transmitter, a learning type remote control transmitter was used to control the equipment. However, it is troublesome to have the learning type remote control transmitter learn the signals from the device's dedicated remote control transmitter, and it is also troublesome to label the learned keys with operation function names, so it is difficult to prepare a large number of keys. This poses a problem in that the memory required to store the carrier frequency and transmission code becomes larger, resulting in an expensive remote control transmitter.

0003

[Problems to be Solved by the Invention] According to the present invention, a plurality of signal formats are stored in a memory in advance, and remote control signal data that can control a device can be read out and preset using a predetermined key. By limiting the functions controlled by the remote control to the common functions of each product, it is possible to label the operation function names on the keys in advance, and by setting the number of keys to an appropriate value, the memory can be saved. The purpose is to provide an inexpensive, easy-to-use remote control transmitter with reduced capacity.

0004

[Means for Solving the Problems] FIG. 1 is an electric circuit block diagram of a preset type remote control transmitter showing one embodiment of the present invention. In a remote control transmitter comprising an MPU 2 that outputs a control code signal by referring to remote control signal data stored in the memory 3 and based on key switches operated by the key matrix circuit 1, the key matrix A preset switch is provided in the circuit 1, and by operating the preset switch and then operating the key switch of the key matrix circuit 1, predetermined remote control signal data is selected from the plurality of signal formats, and the preset switch is released. By doing so, remote control signal data corresponding to the operated key switch can be preset, and the display means lights up when the preset switch is operated.

[0005]

[Operation] With the above-described configuration, the present invention sequentially reads remote control signal data consisting of a plurality of signal formats stored in the memory 3, sends it as a remote control signal to a target device, and selects whether the target device can be controlled. , it is possible to preset a remote control signal that can control the target device to a predetermined key switch. Therefore, compared to conventional learning remote controllers, remote control signal settings can be easily performed, and by limiting the functions controlled by the remote control to those common to each product, the keys can be labeled with operation function names in advance. It is possible to provide an inexpensive and easy-to-use remote control transmitter that suppresses the increase in number and memory capacity. FIG. 2 is an explanatory diagram showing an example of an infrared remote control signal. As shown in the figure, the infrared remote control signal consists of reader code + custom code +
It consists of inverted custom code + data code + inverted data code + continuous code, and each code is A~
The signals are classified into six types of signals A to F, and as shown in Table 1, the burst duration, burst pause period, and number of pulses included in the burst are determined.

[0006]

The six types of signals A to F, including the procedure for generating the signals, are digitized into various values and stored in the memory 3 as a plurality of signal formats, which can be sequentially read out by the MPU 2 and sent out as remote control signals. That's what I do.

[0008]

[Embodiment] Fig. 1 is an electric circuit block diagram of a preset type remote control transmitter showing one embodiment of the present invention. 1 is a key matrix circuit, which is equipped with a key switch for operating the device; When the key switch is operated, the MPU 2 determines the operated key switch, refers to the memory 3 in which remote control signal data is stored, and then
A remote control control code signal corresponding to the operated key switch is output from 2 and added to the drive circuit 8. The drive circuit 8 has one end connected to ground, the other end connected to the cathode of the infrared light emitting diode 5, and the anode of the infrared light emitting diode 5 connected to the power supply VDD via the current limiting resistor 7. The circuit is turned ON/OFF by the applied control code signal, and the current flowing through the infrared light emitting diode 5 is turned ON/OFF to cause the infrared light emitting diode 5 to emit infrared rays, so that a remote control signal can be transmitted.

The key matrix circuit 1 is provided with a preset switch and a power ON/OFF switch that limits the functions controlled by the remote control to common functions of each product, and the preset switch is operated. When the ON/OFF switch is operated, and each time the remote control signal data is selected from among the plurality of signal formats stored in the memory 3, the MPU 2 sequentially reads and outputs the data, and the power of the target device is controlled. By releasing the preset switch, the power supply can be turned on/off.
It is possible to preset remote control signal data compatible with the switch. One end of the MPU 2 is connected to the LED 4, and the other end of the LED 4 is connected to the power supply VDD via a current limiting resistor 6. When the preset switch is operated, the LED 4 lights up to indicate that the preset is in progress. It is designed to make it easy to identify whether the product is the same or not, in order to prevent misuse.

FIG. 3 is an explanatory flowchart showing the procedure for presetting the remote control signal. When presetting the remote control signal, first turn on the preset switch in the key matrix circuit 1, and the MPU 2 turns on the LED 4 indicating that presetting is in progress. lights up, selects and reads out the signal format last set in memory 3. Next, the functions controlled by the remote control provided in the key matrix circuit 1 are limited to common functions of each product, for example, a power ON/OFF switch is operated, and the MPU 2 is operated to control the operated power ON/OFF.
It determines the switch, refers to the signal format last set in the memory 3, and outputs a signal corresponding to power ON/OFF. (Step ■) Visually judge whether the target device can be controlled, and if it cannot be controlled, check whether the selection of all types of remote control signal data stored in the memory 3 has been completed.
If it is determined that all types of remote control signal data have not been selected, the read address for the memory 3 is incremented by 1 so that remote control signal data in other signal formats can be read, and the power is turned on/off. Return to step (3) for outputting a signal corresponding to OFF and repeat the same procedure.

[0011] If the target device can be controlled by visual inspection, turn off the preset switch, and then turn the power on/off by turning the preset switch off (step ■).
The remote control signal data to be output to the FF switch is stored in the memory 3, the selected signal format is set, and the LED 4 indicating that the presetting is in progress is turned off to complete the process. If the target device cannot be controlled and the selection of remote control signal data of all types of signal formats has been completed, this means that the signal to control the target device could not be selected, and the LED 4 blinks to indicate that the preset is in progress. Turn ON the selection disable flag of the memory built in the MPU 2 and complete the process according to the procedure described in step (2).

0012

[Effects of the Invention] As explained above, according to the present invention,
By storing multiple signal formats in memory in advance and presetting remote control signal data that can control devices to specified keys, remote control signal settings can be easily performed. By limiting the number of keys to common functions, operation function names can be labeled in advance, and by setting the number of keys to an appropriate value, we provide an inexpensive and easy-to-use preset type remote control transmitter that reduces memory capacity. can do.

[Brief explanation of drawings]

FIG. 1 is an electric circuit block diagram of a preset type remote control transmitter showing one embodiment of the present invention.

FIG. 2 is an explanatory diagram showing an example of an infrared remote control signal.

FIG. 3 is an explanatory flowchart showing a remote control signal presetting procedure.

[Explanation of symbols]

1 Key matrix circuit 2 MPU 3 Memory 4 LED 5 Light emitting diode 6 Resistor 7 Resistor 8 Drive circuit

Claims (2)

[Claims] 1. Remote control signal data consisting of a plurality of signal formats is stored in a memory, and a control code signal is generated by referring to the remote control signal data stored in the memory based on a key switch operated by a key matrix circuit. In a remote control transmitter consisting of an output MPU, a preset switch is provided in the key matrix circuit, and by operating the preset switch and then operating a key switch of the key matrix circuit, a predetermined remote controller is selected from among the plurality of signal formats. Select the signal data and
A preset type remote control transmitter that makes it possible to preset remote control signal data corresponding to the operated key switch by releasing the preset switch. 2. The preset type remote control transmitter according to claim 1, further comprising display means for displaying that presetting is in progress when the preset switch is operated.