8 results about "Radio reception" patented technology

A swimming pool drowning prevention safety system. The swimming pool drowning prevention safety system comprises: an article wearable by a person, a radio frequency transmitting device coupled to the article for transmitting a radio frequency signal, a microprocessor controlled radio frequency receiving station for receiving the radio frequency signal from the radio frequency transmitting device when the radio frequency transmitting device is within a user adjustable radio reception range of the radio frequency receiving station, and an alert signaling device coupled to the radio frequency receiving station for signaling when the person wearing the article has come within the user adjustable radio reception range of the radio frequency receiving station. The swimming pool drowning prevention safety system is further comprised of an adjustable gain control for varying the RF sensitivity of the radio frequency receiving station, and an RF sensitivity trigger circuit coupled to an audio messaging system for broadcasting at least one selected alert message. The swimming pool drowning prevention safety system further comprises telephone circuitry connection equipment for automatically connecting to a telephone system and transmitting the selected alert message. The swimming pool drowning prevention safety system further comprises a microprocessor that controls and integrates operation of the radio frequency receiving station.

A device for attenuating sound on the human ear, especially for preventing sleep disturbances caused by noise and other sounds. The device for attenuating sound has good damping properties and also ensures that certain alarm sounds are heard in spite of the sound-attenuating measure. To this end, a radio receiver with means for converting radio signals received from a radio station into audio signals is integrated into at least one of two sound-attenuating ear plugs. The radio station is connected to at least one alarm-sounding means and/or at least one sound-receiving means in order to convert a specific alarm and/or at least one specific sound into a radio signal that can be received by a radio receiver as it occurs.

A flexible Fast Walsh Transform circuit provides configurable FWT sizes, and is suitable for use in radio receivers where the received signal may be generated using varying spreading codes and/or varying numbers of multi-codes. Such signal types are commonly encountered in wireless communication systems like those based on the Wideband CDMA (W-CDMA) or IS-2000 (cdma2000) standards, and particularly with the higher data rate provisions of those standards. In one application, a RAKE receiver includes RAKE fingers that each include one of the flexible FWT circuits, such that each finger despreads the received signal using variably sized FWTs in accordance with the characteristics of the received signal. The flexibility in FWT sizing may derive from, for example, the inclusion of separately selectable but differently sized FWT circuits, or from the inclusion of a configurable FWT circuit capable of generating different sizes of FWTs.

When data bursts are transmitted between a base station and a mobile receiver, a changeover is made between a plurality of modulation methods during an existing radio link for modulation of the data. For resynchronization of the receiver in the event of the changeover, synchronization information items are determined from a first part (ET) of the data burst modulated by a first modulation method, and are used for synchronization with a second part (ZT) of the data burst modulated by the second modulation method.

The present invention discloses an information receiver and an information controller, wherein the information receiver includes a power supply circuit, a characteristics information receiver of which includes a singlechip, a data receiving part, and an infrared ray transmission part, a data signal output end of the data receiving part is connected to the singlechip, a data signal input end of the infrared ray transmission part is connected to the singlechip, and the data receiving part employs a radio receiving set or an infrared ray receiving set. The information controller includes the information receiver, a signal output circuit, a liquid crystal display, a keyboard, and a data memory, wherein the signal output circuit, the liquid crystal display, the keyboard and the data memory are connected to the singlechip separately, an information memory is provided with a data transmission device, a data receiving device and a singlechip. The information receiver and the information controller of the invention are telecommunicated with the information memory, which may be used for a long distance recognition of vehicle identification in a car park.

The invention belongs to the radio receiving devices, particularly, discloses a TV wireless earphone. The TV wireless earphone is characterized by comprising a Bluetooth transmitting part connected with a TV audio output, and an earphone provided with a Bluetooth receiving part. The TV is provided with a Bluetooth regulation button and a sound box, and the earphone is provided with a Bluetooth receiving switch. The TV wireless earphone is simple in structure, convenient to use, flexibly designed, free of limitation on the sitting and lying postures of human, excellent in signal receiving performance and suitable for being widely generalized and used.