摘要:
A transmitter for transmitting an RF control signal to a remote system includes a user input device, a memory and a transmitter circuit. The memory includes control data associated with the remote device. The control data includes a first frequency and a second frequency. The transmitter circuit is coupled to the user input device and memory. In response to a single user input, the transmitter circuit generates a rolling code signal, transmits the rolling code signal at the first frequency for a predetermined amount of time, and, upon expiration of the predetermined about of time, transmits the rolling code signal at the second frequency.
摘要:
A system for communication with addressable electronically-controllable appliances using a generalized pointing device is provided. The system includes a pointing device that can communicate with dissimilar types of target appliances from a position remote from those appliances and an appliance interface that makes the target appliances compatible with the pointing device. Use of the system is believed to allow the convenience associated with use of a computer's graphical user interface (GUI) to be realized in communication with physical objects, i.e. the target appliances. In an embodiment for one-way communication from a pointing device to a target appliance, the pointing device may comprise an actuator, an input-output interface, and a transmitter. In an embodiment configured for two-way communication between the pointing device and an appliance, the pointing device may further include a receiver. The appliance interface may include a receiver, an input/output interface, and a driver to convert received pointer command signals to corresponding functions of the appliance. In an embodiment configured for two-way communication, the appliance interface may further include a transmitter. The system may be configured for transmission using optical signals, radio-frequency signals, or both.
摘要:
A method for communication with addressable, electronically-controllable appliances using a generalized pointing device is presented. The pointing device can communicate with dissimilar types of target appliance, and each appliance is associated with an appliance interface that makes the target appliance compatible with the pointing device. Use of the method is believed to allow the convenience associated with the use of a computer's graphical user interface to be realized in communication with physical objects, i.e. the target appliances. The method includes orienting the pointing device for reception of its pointer command signals by an appliance interface of the targeted appliance, transmitting a selection signal from the pointing device to the appliance interface, and transmitting a pointer command signal to the appliance interface. In an embodiment involving two-way communication between the pointing device and appliance interface, the method further includes observing appliance response information transmitted from the appliance interface to the pointing device. The method may include establishment of a line-of-sight transmission path between the pointing device and appliance interface for optical signal transmission. Additionally or alternatively, the method may include use of a non-line-of-sight transmission path for radio frequency signal transmission.
摘要:
An apparatus and a method for providing remote control capability involves transmitting IR and RF signals in a time multiplexed manner. The present apparatus comprises an input device, an IR signal transmitter, a RF signal transmitter and a controller operatively coupled to the input device, the IR signal transmitter and the RF signal transmitter. The controller generates and applies the IR and RF signals to the respective signal transmitters in time multiplexed manner. The IR and RF signals may be transmitted using different protocols without significantly increasing the computing capacity of the controller as compared to a controller of a remote control device which transmits only one type of remote control signal.
摘要:
A pair of battery-powered radio transmitters are individually worn on the wrists of a machine operator, and two radio receivers are tuned to receive the signals broadcast by the radio transmitters, the first radio receiver being a proximity-sensitive device switching off the driving power to the machine whenever either radio transmitter comes within a preselected safe distance limit from the work-accomplishing region of the machine whereas the second radio receiver is a radio transmitter operating state-verifying device switching off the driving power to the machine whenever either or both of the radio transmitters fails to transmit its characteristic broadcast signal.
摘要:
A key fob includes a power amplifier including an output having an output impedance. A radio frequency antenna connected to the power amplifier output represents a first load impedance to the power amplifier output in a space substantially free of interference for radio frequency transmissions, and a second load impedance to the power amplifier output when a hand of a user is capacitively coupled to the antenna. The difference between the second load impedance and the output impedance of the power amplifier is less than the difference between the first load impedance and the output impedance.
摘要:
A method and a device for determining what commands can be used to operate a receiving device (110) when a user operates a control device (105). After such a determination is made, a first command is transmitted to the receiving device from the control device (105) over a first communication interface and a second command is transmitted to the receiving device (110) over 5 a second communication interface. The communication interface that is selected depends on whether the control device can control the operation of the receiving device (110) with such a command directly or whether an intervening device (130/140) is required to translate the command from a first format to a second format.
摘要:
A remote control for controlling a controllable device, including: an infrared transmitter that transmits information via infrared light; a wireless transceiver that transmits information by wireless communication via radio waves; a receiver that receives, from a user, control information to be transmitted to the controllable device; a wireless communication determination unit configured to determine whether wireless communication between the wireless transceiver and the controllable device is possible; and a control unit configured to select, based on a result of the determination by the wireless communication determination unit, one of the infrared transmitter and the wireless transceiver for transmission of the control information to the controllable device, and cause the selected one of the infrared transmitter and the wireless transceiver to transmit the control information to the controllable device.
摘要:
A hand-held device with a sensor for providing a signal indicative of a position of the hand-held device relative to an object surface enables power to the sensor at a first time interval when the hand-held device is indicated to be in a position that is stationary and adjacent relative to the object surface, enables power to the sensor at a second time interval shorter than the first time interval when the hand-held device is indicated to be in a position that is moving and adjacent relative to the object surface, and enables power to the sensor at a third time interval when the hand-held device is determined to be in a position that is removed relative to the object surface.
摘要:
A control device is provided. The control device includes a first communication interface unit which transmits a control command in a first communication mode which uses a bi-directional wireless communication, a second communication interface unit which transmits a control command in a second communication mode which uses a unidirectional wireless communication, a state determination unit which determines a communication mode of the control device, a user interface unit which displays a user interface window which corresponds to a determined communication mode and receives the control command with respect to a broadcast receiver and a control unit which transmits the received control command according to the determined communication mode.