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Class Information
Number: 332/167
Name: Modulators > Amplitude modulator > Suppressed carrier double sideband type
Description: Subject matter in which the carrier is suppressed continuously or intermittently and both sidebands are intact.

Sub-classes under this class:

Class Number Class Name Patents
332/168 Including discrete semiconductor device 15
332/169 Including electron discharge device 3

Patents under this class:

Patent Number Title Of Patent Date Issued
7893787 DC offset cancellation circuit for modulator using 1-bit signal conversion Feb. 22, 2011
7596187 Digital modulation circuit and method as well as digital demodulation circuit and method Sep. 29, 2009
7359472 Method and apparatus for wireless data transmission Apr. 15, 2008
7295628 Stereo multiplex encoder (MPX) for FM transmission Nov. 13, 2007
6922114 Operating method and system for the resonant operation of high-pressure lamps in longitudinal mode Jul. 26, 2005
6587729 Apparatus for audibly communicating speech using the radio frequency hearing effect Jul. 1, 2003
6081697 Multi-carrier radio system and radio transceiver implementation Jun. 27, 2000
5909472 Digital circuit clocking using a dual side band suppressed carrier clock modulated signal Jun. 1, 1999
5889819 EMI reduction using double sideband suppressed carrier modulation Mar. 30, 1999
5815532 Method and apparatus for peak-to-average ratio control in an amplitude modulation paging transmitter Sep. 29, 1998
5742645 Method of digital demodulation of a composite signal Apr. 21, 1998
5450044 Quadrature amplitude modulator including a digital amplitude modulator as a component thereof Sep. 12, 1995
5436600 MRI multi-frequency DSB and SSB RF synthesizer Jul. 25, 1995
5387883 Quadrature modulator having controlled phase shifter Feb. 7, 1995
5373265 Modulator having oscillator for generating IF and RF signals by division and up-conversion Dec. 13, 1994
5343171 Circuit for improving carrier rejection in a balanced modulator Aug. 30, 1994
5077542 Transmission system with suppressed carrier signal amplitude modulation preserving the polarity of the transmitted signal, and corresponding transmitter and receiver Dec. 31, 1991
5047705 Digital amplitude modulation apparatus Sep. 10, 1991
4654608 Double sideband generation with serrodyne modulators Mar. 31, 1987
4646137 Method of producing a modulated chrominance signal with suppressed carrier and color carrier modulator for performing the method Feb. 24, 1987
4243955 Regulated suppressed carrier modulation system Jan. 6, 1981
4207525 Carrier control system for suppressed carrier modulators Jun. 10, 1980
4176319 Double sideband transmission system Nov. 27, 1979
3973223 Frequency-deviation method and apparatus Aug. 3, 1976
3961288 Double sideband suppressed carrier modulator using surface wave device Jun. 1, 1976

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