Class 329/342 - Including discrete semiconductor device

Subclass of Class 329 - Demodulators
Definition: Subject matter containing an electrical device whose constituent
No. of patents: 34
Last issue date: 01/22/2008

Number	Title	Issue Date
7321735	Optical down-converter using universal frequency translation technology A method and system for converting an optical signal to electrical information signals, including demodulated baseband information signals and modulated baseband signals at multiple harmonics. In an embodiment, the optical information signal is amplitude modulated w...	01/22/2008
7295826	Integrated frequency translation and selectivity with gain control functionality, and applications thereof Methods and apparatuses for frequency selectivity and frequency translation, and applications for such methods and apparatuses, are described herein. The method includes steps of filtering an input signal, and down-converting the filtered input signal. The filtering...	11/13/2007
7292835	Wireless and wired cable modem applications of universal frequency translation technology Frequency translation and applications of same are described herein, including cable modem applications. Such applications include, but are not limited to, frequency down-conversion, frequency up-conversion, enhanced signal reception, unified down-conversion and fil...	11/06/2007
7231004	System and method of low power demodulation of continuous phase modulated waveforms A radio system demodulates a continuous phase modulation waveform with a pulse count demodulator. The use of a pulse count demodulator reduces the receiver complexity and reduces power consumption, which makes such a system well suited for hand held or mobile units....	06/12/2007
7110435	Spread spectrum applications of universal frequency translation Frequency translation and spread spectrum applications of same are described herein. Such applications include, but are not limited to, unified down-conversion and de-spreading, unified up-conversion and spreading, RAKE receivers utilizing unified down-conversion an...	09/19/2006
7110444	Wireless local area network (WLAN) using universal frequency translation technology including multi-phase embodiments and circuit implementations Frequency translation and applications of the same are described herein, including RF modem and wireless local area network (WLAN) applications. In embodiments, the WLAN invention includes an antenna, an LNA/PA module, a receiver, a transmitter, a control signal gen...	09/19/2006
7082171	Phase shifting applications of universal frequency translation A universal frequency translation module (UFT) frequency translates an electromagnetic (EM) input signal by sampling the EM input signal according to a periodic control signal (also called an aliasing signal). By controlling the relative sampling time, the UFT modul...	07/25/2006
7072390	Wireless local area network (WLAN) using universal frequency translation technology including multi-phase embodiments Frequency translation and applications of the same are described herein, including RF modem and wireless local area network (WLAN) applications. In embodiments, the WLAN invention includes an antenna, an LNA/PA module, a receiver, a transmitter, a control signal gen...	07/04/2006
7054296	Wireless local area network (WLAN) technology and applications including techniques of universal frequency translation Frequency translation and applications of same are described herein, including wireless local area network (WLAN) applications such as IEEE Standard 802.11 WLANs. Such applications include, but are not limited to, frequency down-conversion, frequency up-conversion, ...	05/30/2006
7039372	Method and system for frequency up-conversion with modulation embodiments A method and system is described wherein an information signals is gated at a frequency that is a sub-harmonic of the frequency of the desired output signal. In the modulation embodiments, the information signal is modulated as part of the up-conversion process. In ...	05/02/2006
7027786	Carrier and clock recovery using universal frequency translation Coherent detection of a received EM signal using universal frequency translation (UFT) is described herein. The received EM signal is sampled according to a sub-harmonic LO signal, where the LO signal is in frequency and phase coherence with the received EM signal. ...	04/11/2006
7010286	Apparatus, system, and method for down-converting and up-converting electromagnetic signals Methods, systems, and apparatuses for down-converting and up-converting an electromagnetic signal. In embodiments, the invention operates by receiving an electromagnetic signal and recursively operating on approximate half cycles of a carrier signal. The recursive o...	03/07/2006
7006805	Aliasing communication system with multi-mode and multi-band functionality and embodiments thereof, such as the family radio service A receiver having multi-mode and multi-band functionality and capabilities is described herein. The receiver is capable of selectively operating over a plurality of bands and channels. The receiver operates in a plurality of modes, including but not limited to a sin...	02/28/2006
6121829	Frequency demodulator A frequency demodulator of the present invention includes: an amplification section for receiving a frequency-modulated signal and amplifying the frequency-modulated signal based on a gain so as to produce a digital signal having a predetermined level and...	09/19/2000
6064255	Pulse counting FM demodulator A pulse counting FM demodulator includes a differentiating circuit that differentiates an FM intermediate-frequency signal to produce a differentiated pulse signal. A trigger signal is generated based on the differentiated pulse signal and is used to cont...	05/16/2000
5990733	Delay line ramp demodulator An integrated circuit includes a demodulator having delay circuitry and demodulation control circuitry that may be fully formed within a common integrated circuit. The delay circuitry receives an input signal and generates a delayed input signal. The demo...	11/23/1999
5903187	Monolithically integrable frequency demodulator device Frequency modulated signals are demodulated through a limiter circuit that chops the signal to give pulses whose occurrence frequency is proportional to the instant frequency of the received signal. The invention is devoted to a new processing of those pu...	05/11/1999
5619538	Pulse shaping FM demodular with low noise where capacitor charge starts on input signal edge A receiver having, arranged in this order, an input section, an FM demodulator, to which a frequency-modulated input signal is applied, and an LF section, which FM demodulator includes a pulse shaper and a low-pass filter, the pulse shaper comprising a se...	04/08/1997
5270666	Method and circuitry for demodulation of angle modulated signals by measuring cycle time An FM or PM signal is demodulated so that the cycle time of the modulated input signal is measured using a time-to-digital converter comprising a counter that uses a moderate clock frequency as a reference clock, a digital delay line interpolator and a co...	12/14/1993
5148114	FM demodulator For an integratable FM demodulator which has an optimal noise behavior and does not require any balancing, the demodulator includes a marker pulse generator (2) having an integrator (22) which is succeeded by a comparator (23), while at the start of each ...	09/15/1992
4959620	Frequency demodulation circuit A frequency demodulation circuit disclosed superposes pulses on an input frequency-modulated (FM) signal at substantially peaks of the FM signal before demodulating the FM signal so that zero cross points of the FM signal can be correctly restored. A peak...	09/25/1990
4926133	FM demodulator having a frequency independent delay circuit An FM signal demodulator for converting the frequency of an input signal to a corresponding voltage. The demodulator includes a delay circuit responsive to the input signal for delaying the phase of the input signal by a fixed time, an exclusive-OR gate r...	05/15/1990
4800338	Pulse count type FM demodulator An FM demodulator having improved demodulation sensitivity, and suitable for monolithic integration. As demonstrated in various embodiments, increased sensitivity is made possible= by narrowing the demodulation band on a low frequency side. According to t...	01/24/1989
4618967	Radio receiver A radio receiver for frequency modulated signals in which direct conversion techniques are used to provide zero I.F. quadrature baseband signals I & Q. The I & Q signals are limited (11,12) to form square wave signals and pulse forming networks (13,14) de...	10/21/1986
4539697	FM Stereo demodulating circuit An FM stereo demodulating circuit comprising a pulse counter detector 1 for generating a pulse train signal including the frequency spectrum of the FM signal, DC biasing means for current biasing the detector output about a midpoint, a subcarrier signal g...	09/03/1985
4350957	Pulse counter-type FM detector In a pulse counter-type FM detector circuit for obtaining audio signals at an output terminal by detecting FM signals in the following order through a limiter circuit, a trigger pulse generating circuit, a monostable circuit and an integrator connected to...	09/21/1982
4282448	Monostable multivibrator and FM detector circuit employing common emitter transistor amplifier with plural emitter resistors to avoid circuit operation from signal noise This invention discloses a monostable multivibrator which is useful for an FM detector circuit of a pulse count system. The monostable multivibrator has a time constant circuit which includes a capacitor, an amplifier circuit which receives an output of t...	08/04/1981
4282490	Pulse count type FM demodulator circuit Disclosed is a demodulator circuit which comprises a limiter circuit, a differentiation circuit, a monostable multivibrator circuit and an integration circuit. The differentiation circuit is composed of a delay circuit and a differential logic circuit. Th...	08/04/1981
4264867	Demodulator circuit for frequency-modulated signal An FM demodulator circuit particularly suited for construction as an integrated circuit is disclosed. Circuitry which may also serve the function of an intermediate frequency amplifier and limiter shapes the input FM signal into two rectangular waves havi...	04/28/1981
4236253	Monostable multivibrator for use in pulse count demodulator or the like In a monostable multivibrator including a gate circuit having at least two inputs where an input signal is applied to a first one of the two inputs and a feedback signal to the other input, a differentiator circuit responsive to the output from the gate c...	11/25/1980
4180777	Tuning meter for use with a pulse count FM demodulation circuit A tuning meter circuit for use with a pulse count FM demodulator of an FM receiver. The circuitry comprises a limiter circuit for amplitude limiting a frequency modulated input signal to produce a train of pulses the width of which varies in accordance wi...	12/25/1979
4024461	FM discriminator An FM discriminator with AFC signal producing circuits is disclosed having a pair of differential switching circuits which form the discriminator and produce output signals opposite in phase. A first constant current signal source is provided which is con...	05/17/1977
4022970	Facsimile receiver with improved FM demodulator FM signals within a predetermined bandwidth representing light-dark variations in a document are transmitted over a communications network to a facsimile receiver. The FM signals are applied to differentiating and frequency doubling means so as to generat...	05/10/1977
4007426	F-M Demodulator circuit An F-M demodulator circuit including a multivibrator and a differential amplifier that have common output electrodes and a capacitor thereacross demodulates a frequency modulated signal differentially applied to input electrodes of the amplifier. The stat...	02/08/1977

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Class 329/342 - Including discrete semiconductor device