A transmitter-receiver controller system for remote actuation of devices or appliances such as security systems and garage door opener systems. The transmitter and receiver each utilize a programmable microcontroller for encoding and decoding signals. The device code, the data transmission format and the transmission frequency are selectable. The device code, data transmission format and the transmission frequency of the transmitter and/or the receiver can be selected to emulate other remote transmitter-receiver controller systems to enable operation of the present transmitter and receiver with those systems.

Remote transmitter-receiver controller system

A trailer backup steering input apparatus is coupled to a vehicle. The trailer backup steering input apparatus comprises a rotatable control element (e.g., a knob) and a rotatable control element movement sensing device. The rotatable control element biased to an at-rest position between opposing rotational ranges of motion. The rotatable control element movement sensing device is coupled to the rotatable control element for sensing movement of the rotatable control element. The rotatable control element movement sensing device outputs a signal generated as a function of an amount of rotation of the rotatable control element with respect to the at-rest position, a rate movement of the rotatable control element, and/or a direction of movement of the rotatable control element with respect to the at-rest position.

Intuitive driver interface for trailer backup assist

The padless touch sensor is used for detecting a touch at a sensing location onto a dielectric element by a user coupled to earth. The sensor comprises a conductive plate attached under the dielectric element and in registry with the sensing location. A predetermined potential is applied on the conductive plate. Simultaneously, test pulses are produced into earth. When the user touches the dielectric element at the sensing location, a potential variation in the conductive plate is produced during a test pulse due to a capacitive circuit formed between earth, the user and the sensor. No deposition of conductive pads on the dielectric element or other special processes are required. Foreign matter or objects placed directly on top of the dielectric element will not erroneously produce a touch condition.

Padless touch sensor

Circuits and methods of dynamic modulation are disclosed. A dynamic modulator is used to reduce measurable conducted and/or radiated electromagnetic interference (EMI). The dynamic modulator is configured to generate either a set of optimal frequency modulation depths or discrete frequencies or both, and dynamically selects them to use over a series of programmable time durations (dwell time). Together with the utilization of Peak, Average or Quasi-Peak (QP) method of measurement, the dynamic modulator can reduce the spectral amplitude of EMI components, in particular the lower harmonics, to effectively pass regulatory requirements. In alternative embodiments, the dynamic modulator is used in a closed loop system to continuously adjust the frequency and the duty cycle of a PWM signal to reduce conducted and/or radiated EMI.

Method and Apparatus for Dynamic Modulation

A trainable transmitter comprises a receiver, a signal generator, and a processor. The receiver receives a signal from a transmitter. The signal generator generates a signal having a frequency related to a frequency control signal supplied to a frequency control terminal of the signal generator. The processor is directly coupled to the frequency control terminal of the signal generator for supplying the frequency control signal and directly coupled to an output terminal of the signal generator for monitoring the frequency of the signal output from said signal generator.

Trainable transmitter having improved frequency synthesis

A radio control device includes a transmitter, in which a crystal type high frequency module equipped with a high frequency circuit corresponding to a frequency band of a carrier and a PLL high frequency module equipped with the high frequency circuit and a PLL circuit for controlling a frequency of the carrier depending on a phase difference between the carrier and a reference signal of oscillator are detachably mounted. Such construction permits the crystal type high frequency module and PLL high frequency module to be selectively used as desired and transmission data to be output by means of the carrier of a desired frequency set depending on the high frequency module. Also, the radio control device includes a receiver which employs a frequency synthesizer system in which a PLL, circuit for controlling an oscillation frequency depending on a phase difference between a reference signal and the oscillation frequency is used and includes a frequency selecting means for selecting a required frequency from a plurality of predetermined frequency data and a frequency setting means for fixedly setting a receive frequency on the frequency selected by the frequency selecting means when a power supply is turned on.

Transmitter for a radio control device

A transmitter for a radio control system capable of highly facilitating the changing-over operation and constantly exhibiting desired control characteristics. The transmitter includes a plurality of main control elements which are controllable in directions relative to each other about a neutral point and control basic operation of a controlled unit, an auxiliary control element for selecting control characteristics of the main control elements, a first changeover element for changing over mechanically neutral of the main control elements, and a second changeover element operated when specific control characteristics of the main control elements are selected by the auxiliary control element, resulting in setting an electrically neutral point of an actuation section depending on the mechanically neutral point of the main control elements. The operation of the first changeover element causes the second changeover element to be changed over in association therewith.

Transmitter for radio control system

A power control circuit for an electronic equipment capable of turning off a power switch to prevent useless consumption of a power supply battery when non-operation of an electronic equipment over a predetermined period of time is detected. A counter circuit 25 is reset when a power switch is turned on, so that a main switch is turned on to render an electronic equipment operative. When a signal is generated from a logical circuit detecting auto cut-off conditions, a clock signal is fed from a control circuit to the counter circuit, so that the main switch is turned off by a carryover signal. After the auto cut-off conditions are detected, a predetermined number of clock pulses are counted to cause the main switch to be turned off, to thereby prevent malfunction of the electronic equipment due to incidental introduction of noise thereinto.

Power control circuit for electronic equipment

A radio control device includes a transmitter, in which a crystal type high frequency module equipped with a high frequency circuit corresponding to a frequency band of a carrier and a PLL high frequency module equipped with the high frequency circuit and a PLL circuit for controlling a frequency of the carrier depending on a phase difference between the carrier and a reference signal of oscillator are detachably mounted. Such construction permits the crystal type high frequency module and PLL high frequency module to be selectively used as desired and transmission data to be output by means of the carrier of a desired frequency set depending on the high frequency module. Also, the radio control device includes a receiver which employs a frequency synthesizer system in which a PLL circuit for controlling an oscillation frequency depending on a phase difference between a reference signal and the oscillation frequency is used and includes a frequency selecting means for selecting a required frequency from a plurality of predetermined frequency data and a frequency setting means for fixedly setting a receive frequency on the frequency selected by the frequency selecting means when a power supply is turned on.

Akira Aneha

Papers

Transmitter for a radio control device

Transmitter for radio control system

Power control circuit for electronic equipment

Radio control device having crystal high frequency module and high frequency phase lockloop for selective use, modules detachably mounted

Pulse generating unit for a transmitter for a radio control device