1
Kenneth A Boehlke: Motion adaptive de-interlace filter. Focus Enhancements, Daniel J Bedell, Smith Hill and Bedell, December 11, 2001: US06330032 (21 worldwide citation)

The invention provides a method for filtering motion effects from a de-interlaced image and an apparatus associated therewith. The method assumes that the de-interlaced image is formed by a combination of a first interlaced image and a second interlaced image. A first step in the method is to interp ...


2
Kenneth A Boehlke: Two-dimensional adjustable flicker filter. Focus Enhancements, Smith Hill and Bedell, February 12, 2002: US06346970 (15 worldwide citation)

The invention is a flicker filter for use with video signals. The flicker filter of the invention has at least two user-adjustable inputs adapted to balance image quality versus flicker in the second video image. A first user-adjustable input is adapted to govern an amount of flicker suppression. A ...


3
Kenneth A Boehlke: Digital phase shifter. Tektronix, Francis I Gray, November 19, 1996: US05576652 (4 worldwide citation)

A digital phase shifter produces from an input clock signal quadrature pairs of the input clock signal. The quadrature pairs are mixed and summed in response to a desired phase angle control signal to produce a phase shifted clock signal. The quadrature pairs are produced from a counter having as in ...


4
Kenneth A Boehlke, Krishnan Palaniswami: Method and apparatus for frequency division multiplexing. Focus Enhancements, John Smith Hill, Smith Hill and Bedell, September 25, 2007: US07274754 (2 worldwide citation)

A radio transmitter and receiver arrangement includes a transmitter and a receiver. The transmitter generates an electromagnetic carrier that varies in frequency throughout a channel interval, and modulates the carrier with an information signal during the channel interval, whereby the carrier is mo ...


5
Kenneth A Boehlke: Circuit and method for distinguishing between an OFDM signal and a radar signal. Summit Semiconductor, Chernoff Vilhauer McClung Stenzel, February 25, 2014: US08660219 (2 worldwide citation)

A radar detector determines whether an input signal is an orthogonally frequency division multiplexed (OFDM) signal or a radar signal by applying at least first and second bandpass filtering operations having substantially non-overlapping passbands to the input signal, each filtering operation havin ...


6
Kenneth A Boehlke: Digital audio transmitter and receiver. Summit Semiconductor, Chernoff Vilhauer McClung & Stenzel, September 27, 2016: US09454968 (1 worldwide citation)

A method is shown for increasing the fidelity of digitally encoded audio, by an interleaving the signal step, frequency conversion step, and polynomial interpolation step along with comparison to a second, redundant signal.


7
Kenneth A Boehlke: Synchronization of audio channel timing. Summit Semiconductor, Chernoff Vilhauer, August 1, 2017: US09723580 (1 worldwide citation)

Synchronization of plural outputs of data transported by a wireless network is facilitated by bandlimiting a sample clock signal controlling a rate at which data is processed by the network's devices and/or bandlimiting wall time data controlling the real time for presenting a datum.


8
Kenneth A Boehlke, Jon C Worley, Jyothi Prakash Noone: Digital audio transmitter and receiver. SUMMIT SEMICONDUCTOR, Chernoff Vilhauer McClung & Stenzel, November 10, 2015: US09183838

A method for increasing the fidelity of digitally encoded audio, for transmitting and receiving a signal comprising digitally encoded packets, and for preserving the power of a signal in transmission including the steps of interleaving the signal, frequency conversion, and polynomial interpolation. ...


9
Kenneth A Boehlke: Wireless speaker unit. Summit Semiconductor, Chernoff Vilhauer McClung & Stenzel, January 24, 2017: US09554211

A wireless speaker unit includes a radio transceiver oscillator which provides timing signals to a pulse width modulator and to a sample rate controller that provides a variable oversampling signal to a delta sigma modulator. The variable oversampling signal determined by a sampling rate of the digi ...


10
Kenneth A Boehlke, Krishnan Palaniswami: Method and apparatus for frequency division multiplexing. Smith Hill And Bedell, August 19, 2004: US20040160988-A1

A radio transmitter and receiver arrangement includes a transmitter and a receiver. The transmitter generates an electromagnetic carrier that varies in frequency throughout a channel interval, and modulates the carrier with an information signal during the channel interval, whereby the carrier is mo ...