JPS6267996A - Remote control transmitter - Google Patents

Abstract

PURPOSE:To operate plural electric equipments for a domestic use with one remote control transmitter by directly optically receiving an optical signal from a general optical remote control transmitter, storing the optical signal as the internal data and converting the internal data into the optical signal to have an output signal. CONSTITUTION:In a receiving state, when an optical signal 101 is inputted while pressing a switch on a keyboard 108 to which the optical signal 101 is allocated, it is converted into an electric signal in a photodetecting element 102, and amplified to a logic level by a preamplifier 103. The switch designates an address corresponding to a memory circuit 106 in one-to-one through a control circuit 108 and herein the parallel data is stored. Then, in a transmission state, when the switch which is previously pressed to register the parallel data is pressed, the parallel data corresponding to said switch is outputted from the memory circuit 106, converted into the serial data in a shift register 105 and fed to a modulating circuit 110.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention is a remote control transmitter using an optical method, which optically inputs and stores external data, and optically outputs the data. related to data processing.

[Summary of the invention]

The present invention provides a remote control transmitter using an optical method, which receives an optical signal from a general optical remote control transmitter in a reception mode, and stores demodulated data in a storage circuit. In transmit mode,
By creating a modulated signal from the data in the storage circuit and transmitting it as an optical signal, it operates in the same way as a general remote control transmitter.

[Prior art]

Conventionally, remote control transmitters, which are often used in home products, have different signal formats depending on the manufacturer, partly to avoid interference, and there is always a one-to-one correspondence with the receiver. , 1 home appliance (with built-in receiver)
always required one remote control transmitter.

[Problems and objectives to be solved by the invention] However, with the conventional method, as the number of remote control home appliances increases like today, the same number of remote control transmitters will be required, and there will be problems with storage space and organization. There is a problem in doing so. Furthermore, for the reason mentioned above, since the signal format is different for each manufacturer, it cannot be used with other products without changing the IC and elements of the remote control transmitter. It was impossible to operate multiple home appliances with the machine.

Therefore, the purpose of the present invention is to solve these problems, and the purpose is to create a system that is equivalent to multiple general remote control transmitters without changing the internal circuit configuration or elements. Provides a remote control transmitter for operation.

[Means to solve the problem]

The remote control transmitter of the present invention includes a light receiving element that receives a transmitted optical signal from at least an external optical remote control transmitter 41 and converts the optical signal into an electrical signal, and amplifies the electrical signal to a logic level. It consists of a preamplifier that demodulates the amplified electrical signal, a demodulation circuit that demodulates the amplified electrical signal, a shift register that captures the demodulated electrical signal as serial data and converts it to parallel data, and a clock generation circuit that generates the timing signal when capturing the demodulated electrical signal as serial data. It is characterized in that it has a conversion circuit.

[Effect]

The operation of the present invention is to directly optically receive an optical signal from a general optical remote control transmitter, store this as internal data, convert the internal data into an optical signal, and output an output signal. By doing so, it becomes possible to operate the same as a plurality of remote control transmitters without changing the internal circuit configuration and elements.

〔Example〕

FIG. 1 is a block diagram of a remote control transmitter in an embodiment of the invention.

101 is an optical signal from an external transmitter, 102 is a light receiving element that converts the optical signal into an electrical signal, 1a3 is a preamplifier that amplifies the electrical signal from the light receiving element 102 to a logic level, and 104 is a demodulator of the amplified electrical signal. Demodulation circuit, 1
05 has the function of taking in the signal from the demodulation circuit 104 as serial data using the timing pulse from the clock generation circuit 109 and converting it into parallel data, and the function of converting the parallel data from the storage circuit 107 into serial data. It is a shift register. 110
A modulation circuit 111 that modulates the carrier from the clock generator 109 with serial data from the shift register 105 is an amplifier that amplifies the modulated electrical signal to a level that can drive the light emitting element 112.

In the receiving state, when the optical signal is input while pressing the switch on the keyboard 108 to which the optical signal 101 is to be assigned, it is converted into an electrical signal by the light receiving element 102 and amplified to a logic level by the preamplifier 103. The amplified electrical signal is demodulated by the demodulation circuit 104 and sent to the shift register f05 by the clock generation circuit 109.
The data is taken in as serial data according to the timing pulses and converted to parallel data. The switch specifies an address in one-to-one correspondence to the storage circuit 106 via the control circuit 108, where the parallel data is stored.

Next, in the transmission state, by pressing the switch that was pressed when registering the parallel data, the parallel data corresponding to the switch is output from the storage circuit 106, converted to serial data by the shift register 105, and sent to the modulation circuit 110. Sent. Here, the clock generation circuit 10
The amplifier 111 modulates the carrier from 9 with the serial data to a level that can drive the light emitting element 112.
The light emitting element 112 converts the signal into the same optical signal as the optical signal 101 previously input, and outputs the same optical signal.

Similarly, in the receiving state, a new optical signal can be registered with another switch, and in the transmitting state, by pressing said switch, a new optical signal can be output.

FIG. 2 is a diagram showing the waveforms of signals at each part.

116 is the waveform output from the light receiving element, 114 is the waveform amplified to logic level by the preamplifier 103 and the waveform modulated by the modulation circuit 110, and 115 is the demodulation circuit 1.
04 and the output waveform from the shift register.

〔Effect of the invention〕

As explained above, according to the present invention, remote control transmission (
It is possible to input data from as many sources as the storage capacity of this remote control transmitter allows, and it is possible to have the same transmission ability as multiple remote control transmitters, so one remote control transmitter can input multiple data. It becomes possible to control home appliances, etc.

In addition, it is possible to input various types of data from the outside in the same way as when transmitting, without changing the circuit configuration or elements used of the remote control transmitter as well as the receiver side. It can be used in the same way as a control transmitter, making it easy for general users to use.

Moreover, since the format of the output optical signal is the same as that of existing remote control transmitters, it can be used with confidence without worrying about interference.

[Brief explanation of drawings]

Figure 1: Block diagram of the remote control transmitter. Fig. 2: Waveform diagram of signals at various parts. 101... Optical signal 102... Light receiving element 103+... Preamplifier 104... Demodulation circuit 105... Shift register 106... Memory circuit 107...Keyboard 10B...Control circuit 109...Clock generation circuit 110...Modulation circuit 111...Amplifier 112... ...Light emitting element 115... Output waveform from light receiving element 114...
...Preamplifier output waveform, modulation circuit output waveform 115...Demodulation circuit output waveform, shift register output waveform and above

Claims (1)

[Claims] An optical remote control transmitter that converts internal data into an optical signal and outputs an optical signal for control, at least receives a transmitted optical signal from an external optical remote control transmitter, and outputs the optical signal. a light receiving element that converts the electrical signal into an electrical signal, a preamplifier that amplifies the electrical signal to a logic level, a demodulation circuit that demodulates the amplified electrical signal, a shift register that takes in the demodulated electrical signal as serial data and converts it into parallel data, A remote control transmitter characterized by having a conversion circuit comprising a clock generation circuit that generates a timing signal when capturing the data as serial data.