摘要:
Methods and apparatus for encoding data for wireless transmission are disclosed in which a data message may be encoded into a transmission code as a first coding format and a second coding format. The first coding format characterized by a first bit representation and the second coding format characterized by a second bit representation different from the first bit representation. The transmission code may be transmitted having the first and second coding formats.
摘要:
A system and method for proximity control of a barrier comprise a stationary wireless signal receiving device and a mobile transmitting device. The wireless signal receiving device may monitor at least one transmitting device within a predetermined coverage area and may be a radio frequency receiver or a spread spectrum receiver located near the barrier. In one embodiment, the transmitter device emits a control signal that is received by the receiving device when the transmitter is within a reception range. In one embodiment, the control signal includes transmitter identification information, directional information and position information.
摘要:
A signaling device that receives coded signals from a transmitter. The signaling device includes a first circuit that receives a from the transmitter. The first code includes a first identification code and a first variable code. The signaling device further includes a memory that stores a second code. The second code includes a second identification code and a second variable code. The signaling device further includes a second circuit coupled to the first circuit and the memory. The second circuit generates an output signal if the first code matches the second code. The signaling device further includes an annunciator circuit coupled to the second circuit. The annunciator circuit provides a perceivable indicator if the second circuit generates the output signal.
摘要:
An alarm relay device including a microphone that produces a signal responsive to an audible alarm having a frequency. A first circuit coupled to the microphone produces a first detect signal when the signal is above a predetermined level. A second circuit coupled to the microphone and the first circuit receives power responsive to the first detect signal. The second circuit produces a second detect signal when the signal is within a predetermined range of the frequency.
摘要:
A method and apparatus for providing a universal transmitter that can detect and emulate a transmission signal of a transmitter, the transmission signal having a corresponding transmission frequency and a corresponding modulation pattern. The universal transmitter comprises: a detection circuit that detects a frequency and a modulation pattern of a transmitted signal of a separate transmitter and a memory. A processor coupled to the detection circuit and the memory, stores a frequency value representative of the detected frequency and a plurality of value representative of the detected modulation pattern, in the memory. A transmitting circuit coupled to the processor, is operable to transmit an output signal having the frequency and the modulation pattern of the transmission signal.
摘要:
The invention provides a remote control device with password functions. Control function buttons can be used for sending control signals and for password entry. The remote control device is configured such that a user can enable and disable a password mode. When the password mode is enabled, the remote control is configured to require a password being entered using one or more control function buttons before a control signal will be transmitted in response to a control function being pressed or disabling the password mode. A user can also invoke a password programming function to enter, change or erase a password using one or more control function buttons.
摘要:
A system and methods are provided for triggering an operating device. In one embodiment, a triggering device includes a receiving unit configured to receive one or more wireless control signals. The receiving unit may include a switch and a processor, wherein the processor is configured to control the switch for activation of an operating device coupled to a signaling line based, at least in part, on the one or more wireless control signals. According to another embodiment, the triggering device may include a connector configured to electrically couple the receiving unit to the signaling line, the connector having one or more contacts and a housing configured to clasp the signaling line and couple the one or more contacts to the signaling line. Additionally, the signaling line may relate to existing wiring of the operating device.