Patents in subclass Telecommunications/Adjustable
Parent class: Telecommunications
| Number | Patent title | Issue Date |
|---|---|---|
| 07353022 | Wireless mobile call location and delivery for non-geographic numbers A system and method is provided for establishing a call to a wireless directory number (982) which is either a non-geographic directory number or a non-dialable directory number. A call is initiated from a wireline telephone (155) to a... |
04/01/2008 |
| 07180933 | Squelch circuitry for high speed high frequency operation A squelch circuit for operating at high speed and at high frequencies includes a squelch input unit, a low swing pre-amplifier and a sampling and decision circuit. The squelch input unit pre-processes the positive and negative signals of... |
02/20/2007 |
| 07120408 | Differential signal squelch detection circuit and method An electrical circuit detects a "squelch," or "out-of-band," state of a differential signal pair having a positive ("p") signal line and a negative ("n") signal line. In one embodiment of the invention, a first and a second comparator... |
10/10/2006 |
| 07043223 | Super-regenerative radio frequency receiver and its data receiving method A high sensitivity of a Super-Regenerative Radio Frequency Receiver and its method is provided in the embodiment of the present invention. By using a common-mode feedback circuit and by replacing the rectifier with a feedback... |
05/09/2006 |
| 06842609 | Radio having adjustable seek sensitivity based on average signal strength and method therefor A tuneable radio and method for automatically adjusting the seek sensitivity alignment for seek operations. The radio has a radio receiver for receiving broadcast radio wave signals, and a tuner adjustable for selecting from a plurality... |
01/11/2005 |
| 06775527 | Squelch circuit with adjustable reference level A squelch circuit with an adjustable reference level, having an input level comparator with a first, a second, a third and a fourth current input terminal, a first and a second input terminal, and an output terminal. A first current... |
08/10/2004 |
| 06640093 | Broadcast receiver A receiver for broadcast signals, e.g. DAB, FM, DVB, and digital or analog short-wave RF broadcast signals according to the present invention includes a polyfunctional circuit (5) that can be switched into three modes and performs the... |
10/28/2003 |
| 06397049 | Two-way radio with improved squelch A two-way radio (1) that has a radio frequency receiver (2) having a modulated radio frequency signal output and a variable bandwidth filter (3) with an input coupled to the modulated radio frequency signal output. The radio (1) also has... |
05/28/2002 |
| 06377590 | Apparatus and method for adaptive delay mitigation of voice communication An apparatus (30) and method minimize voice delay by combining comfort noise with subframe insertions to fill gaps in speech and maintain a minimum delay for packets arriving late. When a packet is late, short durations of sound are... |
04/23/2002 |
| 06298225 | Radio telephones and method of operation A radio receiver operable for communication in a radio system in which information is transmitted on respective channels in bursts. Each burst has a field for enabling the radio receiver to synchronise therewith. The radio receiver has an... |
10/02/2001 |
| 6108528 | Receive squelch circuit having function of detecting pulse width A receive squelch circuit detects a pulse width of an input data signal to prevent errors from occurring during detection of received data. The squelch circuit adds a function of detecting a pulse width to an input side to detect normal... |
08/22/2000 |
| 5933769 | Portable telephone capable of decreasing noise In a portable telephone, a voice filter is connected to an antenna through a receiving circuit. A filter is connected to the voice filter through a switching circuit and filters the voice signal from the voice filter to produce a filtered... |
08/03/1999 |
| 5564090 | Method and apparatus for dynamically adjusting receiver squelch threshold An adaptive digital squelch system, responsive to ambient RF backgroundnoise, that automatically adjusts the receiver squelch level duringintervals when no valid signal is being received. A valid signal isconsidered to be a signal that is greater... |
10/08/1996 |
| 5493711 | Radio receiver for locating the strongest signal carrying a selected program A receiver has a random counter, which outputs a timer signal to a controlcircuit. A zero-cross point detection circuit generates a detection signalwhich is input to the control circuit. When the random counter outputs atimer signal and the... |
02/20/1996 |
| 5465404 | Communications receiver with an adaptive squelch system A wireless communications receiver having an adaptive squelch system andoperable in multiple states including a receiver (11) that provides areceived signal when operating in a clear (unscrambled) state and whenoperating in a secure (scrambled)... |
11/07/1995 |
| 5454118 | Method and apparatus for prevention of squelch chatter A squelch circuit (118) is provided having a squelch hysteresis window forpreventing squelch chatter in a communication device (100). Thecommunication device (100) includes a plurality of squelch states. Thesquelch circuit (118) comprises a first... |
09/26/1995 |
| 5450622 | Method and apparatus for providing a very fast acting noise squelch control system for an RF radio receiver A fast acting noise squelch control circuit for FM radio receivers samplesthe noise above the audio band to determine the presence of an RF carrier.The detected noise signal is integrated by a low-pass frequency gainintegrating filter and compared,... |
09/12/1995 |
| 5408694 | Receiver squelch circuit with adjustable threshold A receiver squelch circuit has a programmable DC threshold level. Thesquelch circuit includes input circuitry that responds to an incomingsignal by generating a decision signal when the DC voltage level of theincoming signal crosses a predetermined... |
04/18/1995 |
| 5390344 | FM audio signal receiver having a characteristic control function An FM audio signal receiver having a characteristic control functionincludes a receiving circuit for receiving an FM broadcast wave, areceived state analyzing circuit for analyzing a state of the FM broadcastsignal received by the receiving circuit,... |
02/14/1995 |
| 5303406 | Noise squelch circuit with adaptive noise shaping A noise squelch circuit for a radio receiver (100) includes an adaptivefilter (204) for shaping frequency characteristics of a demodulator output (115) according to factors which effects squelch sensitivity. Suchfactors may include channel spacing... |
04/12/1994 |
| 5303407 | Digital squelch tail circuit for two-way radio communication systems A squelch tail circuit (20) is provided capable of incorporation withinintegrated circuit structures. A digital timer (26 and 27) provides a timedelay based upon a feed-back comparison providing a long time delay toweak signals and a short time... |
04/12/1994 |
| 5303409 | Automatically compensated squelch circuit A receiver (100) includes an audio section (200) which provides forcompensated squelch settings which are automatically adjustable forchanges in operating conditions such as changes in temperature or receiverchannel spacing. Temperature circuit... |
04/12/1994 |
| 5263184 | Noise reducing circuit for a receiver using a fuzzy controller A noise reducing circuit for a receiver such as an FM receiver which isimproved in noise reducing effect while reducing an unfamiliar feeling toand an erroneous operation of the receiver. The noise reducing circuitcomprises fuzzy inference means for... |
11/16/1993 |