Radio transmitter with learning function, and the related control method

• US 6,188,889 B1
• Filed: 09/15/1998
• Issued: 02/13/2001
• Est. Priority Date: 09/15/1998
• Status: Expired due to Fees

• Current Assignee: Shyi-Tong Tsai
• Original Assignee: Shyi-Tong Tsai
• Inventors: Tsai, Shyi-Tong
• Primary Examiner(s): Tsang, Fan
• Assistant Examiner(s): PEREZ GUTIERREZ, RAFAEL
• Application Number:
  US09/153,047
• Time in Patent Office: 882 Days
• Field of Search: 455/420, 455/92, 455/352, 455/353, 455/355, 341/176, 340/825.69, 340/825.72, 340/825.24, 340/825.25, 340/825.22, 348/734, 359/142
• US Class Current: 455/420
• CPC Class Codes: G08C 17/02 using a radio link
• CPC Class Codes: G08C 19/28 using pulse code
• CPC Class Codes: G08C 2201/20 Binding and programming of remote control devices

Abstract

A radio transmitter includes a high frequency circuit for modulation and transmitting during a remote transmitting mode and for receiving and demodulation during a receiving learning mode, a LED indicator connected in series between the high frequency circuit and the power supply for transmitting indication and tuning indication, a single chip microcomputer for identification code checking and code encoding control, and a memory (EEPROM) for data storage.

Claims

1. A radio transmitter comprising:

a single chip microcomputer which controls the operation of the radio transmitter, enabling the radio transmitter to provide a receiving learning mode and a remote control transmitting mode, said single chip microcomputer having a set of input terminals and a set of output terminals;

memory means controlled by said single chip microcomputer to receive encoding data from said single chip microcomputer when the radio transmitter is set into the receiving learning mode, or to output stored data to said single chip microcomputer when the radio transmitter is set into the remote control transmitting mode;

a function control key pad, said function control key pad comprising a set of key switches respectively connected to the input terminals of said single chip microcomputer and set by the user to provide a set of combinations for different function controls;

a mode selector switch connected to one input terminal of said single chip microcomputer for selection between said receiving learning mode and said remote control transmitting mode;

an encoding signal input circuit, said encoding signal input circuit comprising a transistor having the collector thereof connected to one input terminal of said single chip microcomputer for outputting an encoding signal from said encoding signal input circuit to said single chip microcomputer; and

a transceiver operable in the RF frequency range having an input terminal controlled by a serial code signal from said single chip microcomputer and an output terminal connected to the base of the transistor of said encoding signal circuit;

wherein when the receiving learning mode is selected, said single chip microcomputer reads in an encoding signal from the transistor of said encoding signal input circuit and stores it in an address in said memory means subject to the setting of the key switches of said key pad;

when the remote control transmitting mode is selected, said single chip microcomputer fetches said encoding signal from said memory means subject to the setting of the key switches of said key pad and outputs said fetched encoding signal to said transceiver for external transmission.

2. A radio transmitter comprising:

a single chip microcomputer which controls the operation of the radio transmitter, enabling the radio transmitter to provide a receiving learning mode and a remote control transmitting mode, said single chip microcomputer having a set of input terminals and a set of output terminals;

memory means controlled by said single chip microcomputer to receive encoding data from said single chip microcomputer when the radio transmitter is set into the receiving learning mode, or to output stored data to said single chip microcomputer when the radio transmitter is set into the remote control transmitting mode;

a function control key pad, said function control key pad comprising a set of key switches respectively connected to the input terminals of said single chip microcomputer and set by the user to provide a set of combinations for different function controls;

a mode selector switch connected to one input terminal of said single chip microcomputer for selection between said receiving learning mode and said remote control transmitting mode;

an encoding signal input circuit, said encoding signal input circuit comprising a transistor having the collector thereof connected to one input terminal of said single chip microcomputer for outputting an encoding signal from said encoding signal input circuit to said single chip microcomputer;

a transceiver having an output terminal controlled by a serial code signal from said single chip microcomputer and an output terminal connected to the base of the transistor of said encoding signal circuit, said transceiver comprising a choking coil; and

a tuning indication circuit for tuning indication, said tuning indication circuit comprising a LED (light emitting diode) indicator having a positive terminal connected to the positive terminal of a power supply and a negative terminal connected to the choking coil of said transceiver;

wherein when the receiving learning mode is selected, said single chip microcomputer reads in an encoding signal from the transistor of said encoding signal input circuit and stores it in an address in said memory means subject to the setting of the key switches of said key pad, and the intensity of light of the LED indicator of said tuning indication circuit varies with the value of the electric current at the collector of a transistor of said transceiver for tuning indication;

when the remote control transmitting mode is selected, said single chip microcomputer fetches said encoding signal from said memory means subject to the setting of the key switches of said key pad and outputs said fetched encoding signal to said transceiver for external transmission, and the LED indicator of said tuning indication circuit is turned on to indicate the transmission of the signal.

3. A radio transmitter comprising:

a single chip microcomputer which controls the operation of the radio transmitter, enabling the radio transmitter to provide a receiving learning mode and a remote control transmitting mode, said single chip microcomputer having a set of input terminals and a set of output terminals;

memory means controlled by said single chip microcomputer to receive encoding data from said single chip microcomputer when the radio transmitter is set into the receiving learning mode, or to output stored data to said single chip microcomputer when the radio transmitter is set into the remote control transmitting mode;

a function control key pad, said function control key pad comprising a set of key switches respectively connected to the input terminals of said single chip microcomputer and set by the user to provide a set of combinations for different function controls;

a mode selector switch connected to one input terminal of said single chip microcomputer for selection between said receiving learning mode and said remote control transmitting mode;

an encoding signal input circuit, said encoding signal input circuit comprising a transistor having the collector thereof connected to one input terminal of said single chip microcomputer for outputting an encoding signal from said encoding signal input circuit to said single chip microcomputer; and

a transceiver having an input terminal controlled by a serial code signal from said single chip microcomputer and an output terminal connected to the base of the transistor of said encoding signal circuit, said transceiver including a transistor, a first coil, a second coil, a capacitor, a variable capacitor, and a resistor, said first coil being a choking coil having one end connected to a negative terminal of the LED indicator of a tuning indication circuit and an opposite end connected in series to said second coil, said resistor having one end for controlling the base of the transistor of said transceiver and an opposite end connected to one output terminal of said single chip microcomputer for receiving series of encoding signals, said capacitor being for oscillation feedbacks;

wherein when the receiving learning mode is selected, said single chip microcomputer reads in an encoding signal from the transistor of said encoding signal input circuit and stores it in an address in said memory means subject to the setting of the key switches of said key pad;

when the remote control transmitting mode is selected, said single chip microcomputer fetches said encoding signal from said memory means subject to the setting of the key switches of said key pad and outputs said fetched encoding signal to said transceiver for external transmission.

4. A radio transmitter control method of duplicating a master transmitter from a transmitter to be duplicated through the receiving learning mode and then driving the master transmitter to transmit signal by remote control in a system wherein the master transmitter includes:

a single chip microcomputer which controls the operation of the radio transmitter, enabling the radio transmitter to provide a receiving learning mode and a remote control transmitting mode, said single chip microcomputer having a set of input terminals and a set of output terminals;

memory means controlled by said single chip microcomputer to receive encoding data from said single chip microcomputer when the radio transmitter is set into the receiving learning mode, or to output stored data to said single chip microcomputer when the radio transmitter is set into the remote control transmitting mode;

a function control key pad, said function control key pad comprising a set of key switches respectively connected to the input terminals of said single chip microcomputer and set by the user to provide a set of combinations for different function controls;

a mode selector switch connected to one input terminal of said single chip microcomputer for selection between said receiving learning mode and said remote control transmitting mode;

an encoding signal input circuit, said encoding signal input circuit comprising a transistor having the collector thereof connected to one input terminal of said single chip microcomputer for outputting an encoding signal from said encoding signal input circuit to said single chip microcomputer;

a transceiver having an input terminal controlled by a serial code signal from said single chip microcomputer and an output terminal connected to the base of the transistor of said encoding signal circuit;

wherein when the receiving learning mode is selected, said single chip microcomputer reads in an encoding signal from the transistor of said encoding signal input circuit and stores it in an address in said memory means subject to the setting of the key switches of said key pad;

when the remote control transmitting mode is selected, said single chip microcomputer fetches said encoding signal from said memory means subject to the setting of the key switches of said key pad and outputs said fetched encoding signal to said transceiver for external transmission;

the method comprising the steps of;

i) moving the master transmitter close to the transmitter to be duplicated when set in the receiving learning mode, then operating the transmitter to be duplicated to transmit a signal, and then adjust the transceiver of the master transmitter, enabling the intensity of light of the LED indicator of the turning indication circuit of the master transmitter to reach the maximum level;

ii) switching the mode selector switch of the master transmitter to the position of the receiving learning mode, enabling the single chip microcomputer to read in series encoding signals from the transistor of the encoding signal input circuit;

iii) enabling the single chip microcomputer to store received series of encoding signals in the corresponding address in the memory means subject to the setting of the set of key switches of the key pad; and

iv) switching the mode selector switch of the master transmitter to the remote control transmitting mode, enabling the single chip microcomputer to fetch corresponding serial code from the memory means subject to the setting of the key switches of the key pad and then to send said fetched serial code through the transceiver for external transmission.