41
Scott A Moskowitz: Optimization methods for the insertion, protection, and detection of digital watermarks in digital data. Wistaria Trading, September 12, 2006: US07107451 (89 worldwide citation)

Disclosed herein are methods and systems for encoding digital watermarks into content signals. Also disclosed are systems and methods for detecting and/or verifying digital watermarks in content signals. According to one embodiment, a system for encoding of digital watermark information includes: a ...


42
Xiao Y Guo, Gerard Maral: Digital filter-type frequency demultiplexing device. France Telecom, Lowe Price LeBlanc & Becker, March 29, 1994: US05299192 (89 worldwide citation)

After sampling a multicarrier signal, groups of multiplex modulated carriers with identical bandwidths are separated by group filters. Clock frequencies of the carriers are then reduced by decimators depending on their respective bandwidths. To separate each of the modulated carriers in each of the ...


43
Steven D Wagner: Television digital signal processing apparatus employing time-base correction. Yves C Faroudia, Thomas A Gallagher, February 4, 1997: US05600379 (88 worldwide citation)

A color television signal, digitized by a sampling clock asynchronous with respect to the television signal's horizontal synchronizing pulses, is applied to a dynamically programmable digital filter which upsamples or downsamples the received digitized television signal over short time periods in re ...


44
Hirotake Wakai, Makoto Ohnishi, Fumihito Tomaru: Digital modulator having a digital filter including low-speed circuit components. Hitachi Denshi Kabushiki Kaisha, Antonelli Terry Stout & Kraus, July 20, 1999: US05926065 (88 worldwide citation)

A digital demodulator which demodulates an analog signal obtained through a quadrature amplitude modulation to produce a digital demodulated signal includes a converter to convert the analog signal into a digital signal and a signal processor to quadrature-demodulating the digital signal from the co ...


45
Kevin T Chan: Integrated Gigabit Ethernet transmitter architecture. Broadcom Corporation, Christie Parker & Hale, July 10, 2001: US06259745 (86 worldwide citation)

A power efficient and reduced electromagnetic interference (EMI) emissions transmitter for unshielded twisted pair (UTP) data communication applications. Transmit data is processed by a digital filter. The digital filter output data is converted to a current-mode analog waveform by a digital-to-anal ...


46
Angi Ye, C Jim Li: Dataform reader utilizing hand jittering compensation method. Telxon Corporation, Watts Hoffmann Fisher & Heinke Co, December 28, 1999: US06006990 (86 worldwide citation)

A imaging based dataform reader utilizes a method of compensating for image offset between consecutive image fields comprising an interlaced image frame. The method includes determination of a disparity vector corresponding to the direction and magnitude of the offset between portions of successive ...


47
Paul G Knutson: Reconfigurable programmable digital filter architecture useful in communication receiver. Thomson Consumer Electronics, Joseph S Tripoli, Eric P Herrmann, Ronald H Kurdyla, February 7, 1995: US05388062 (86 worldwide citation)

A VLSI integrated circuit, which comprises a single IIR input and global section and identically-structured cascadable filter sections, each of which filter sections includes a pair of time-multiplexed, real-coefficient, input-weighted FIR filter units and additional delay means, can be selectively ...


48
Masao Noro, Yusuke Yamamoto, Toshio Maejima: CMOS differential amplifier for a delta sigma modulator applicable for an analog-to-digital converter. Yamaha Corporation, Graham & James, January 25, 2000: US06018262 (85 worldwide citation)

An analog-digital converter includes a .DELTA..SIGMA. modulator, a digital filter, a high-pass filter and a multiplier which are connected in series. Analog input is converted into serial-bit strings by the .DELTA..SIGMA. modulator, for which gain `1/A` is set. The digital filter extracts low-freque ...


49
Toshiaki Kobayashi, Hidetaka Ozawa: Vibration/noise control system. Honda Giken Kogyo Kabushiki Kaisha, Lyon & Lyon, June 10, 1997: US05638305 (85 worldwide citation)

A vibration/noise control system controls vibrations and noises generated with a periodicity or a quasi-periodicity from a vibration/noise source having at least a rotating member. A self-expanding engine mount is arranged in at least one of vibration/noise transmission paths and is driven by a driv ...


50
Bruce Del Signore, Eric J Swanson, Jeffrey M Klaas, David L Medlock: Variable decimation architecture for a delta-sigma analog-to-digital converter. Crystal Semiconductor Corporation, Ross Howison Clapp & Korn, October 20, 1992: US05157395 (84 worldwide citation)

An analog-to-digital converter includes a delta-sigma modulator (10), having the output thereof filtered by a digital filter section. The digital filter section includes a first fixed decimation filter (12) followed by a variable decimation filter section (14) and an output low-pass filter section ( ...