ALAN LYNN LASNESKI
Pilots in Marion, OR

6636205, Oct 21, 2003

Apr 10, 2000

09/545989

Alan L. Lasneski - Turner OR

InFocus Corporation - Wilsonville OR

G09G 500

345204, 345213

A line parameter detection circuit ( ) of this invention includes an active video detector ( ) that generates an “active video” signal ( ) indicative of a video signal ( ) containing video data that exceeds a predetermined threshold level. The line parameter detection circuit further includes three counters ( ) that are incremented by a reference clock ( ). The counters are reset and start counting reference clock pulses upon receiving an H pulse ( ). A left edge register ( ) stores the count accumulated in the first counter upon receiving a rising edge of the active video signal, a right edge register ( ) stores the count accumulated in the second counter upon receiving a falling edge of the active video signal, and a line length register ( ) stores the count accumulated in the third counter upon receiving the next subsequent H pulse. Each video signal scan line includes blanking periods ( ) between the H pulses and the active video region. The precise locations and timings of the blanking periods are typically unknown, however the period of the active video region is known because it coincides with the active video signal period.

6728402, Apr 27, 2004

Jun 16, 2003

10/463029

Carl J. Ruggiero - Tigard OR
Alan L. Lasneski - Turner OR

InFocus Corporation - Wilsonville OR

G06K 900

382168, 382218, 382219, 375376

A digital sampler generates a digital video signal by digitally sampling an analog video signal based on a pixel clock signal. The analog signal comprises a static image. A signal generator generates the pixel clock signal based on a reference signal for the analog video signal and a delay signal. A delay controller generates the delay signal at a plurality of levels. A histogram circuit generates a pair of histograms for each of the plurality of levels of the delay signal, compares each pair of histograms for a difference value, and identifies a pair of histograms having a least difference value. Each histogram comprises occurrences of color values in a given frame of the digital video signal.

6546149, Apr 8, 2003

Oct 15, 1999

09/418415

Carl J. Ruggiero - Sherwood OR
Alan Lasneski - Turner OR

InFocus Corporation - Wilsonville OR

G06K 940

382275, 382172, 382270

A method of reducing noise in a digitally sampled image is achieved in which an entire frame image is divided into regions which are used to determine the relative noise level of the static image over a period of several frames. The relative noise level is taken as a measurement and is then used by the firmware to make adjustments during the digital sampling process. By using less than the entire frame of the image information the method of reducing noise can be implemented without requiring the presence of a frame buffer.

6678408, Jan 13, 2004

Nov 17, 1999

09/442348

Carl J. Ruggiero - Sherwood OR
Alan Lasneski - Turner OR

InFocus Corporation - Wilsonville OR

G06K 900

382168, 382224, 382162, 382164, 382218, 382219, 348500, 348536, 348537

A method of reducing noise in a digitally sampled image in which entire frame images are sampled to form a histograms which are used to determine the relative noise level of the static image over a period of several frames. A frame of data is sampled using a pixel clock signal. A histogram of that frame is constructed which involves counting the number of occurrences of a value of color or range of colors in the image and storing that number. A second frame is sampled and a histogram is constructed for the second frame. A comparison is made between the two sets of histogram information. The difference gives the system controller a relative measure of the digital noise present in the static image. This process is repeated over time giving wherein each of the histograms shows a change. After a set number of steps are performed the pixel clock phase is set to correspond to the phase having the least change.

6559837, May 6, 2003

Sep 25, 2000

09/669091

Alan L. Lasneski - Turner OR
Carl J. Ruggiero - Sherwood OR

InFocus Corporation - Wilsonville OR

G09G 500

345204, 348537

A video projection display system ( ) of this invention employs histograms to detect an active video region ( ) of a video frame ( ). A microcontroller ( ) loads registers ( ) in an ASIC ( ) to accumulate histograms of low pixel values occurring within columns (70-74) of video data. The microcontroller scans the histograms to, identify the left-most column in which a set ( ) of black pixel values is clustered, which column marks the left edge of the active video region. The right edge of the active video region is detected in a similar manner. The video signal may also include overshoot and noise. When an ADC ( ) digitizes the video signal, the overshoot and noise causes many bright pixels to be converted to below their maximum digital values. Therefore, the microcontroller programs the ASIC such that a histogram ( ) of the highest pixel values is collected from within the active video region. The microcontroller then scans the histogram to locate a rapid decrease in the number of pixels having values greater than some large value.

6989823, Jan 24, 2006

Aug 31, 2000

09/653613

Alan Lasneski - Turner OR, US

InFocus Corporation - Wilsonville OR

G09G 5/00

345204, 345214, 345531, 345545, 382236

A method for reducing phase noise and distortion in a digitally converted image in which only a selected subset of the video frames that represent the image are displayed. The selected subset is comprised of reference video frames, where a new reference frame is captured for display after determining that a pixel of an inbound video frame exceeds a certain threshold of change as compared to a corresponding pixel of a previously captured reference frame. The pixel comparison is performed by comparing corresponding numerical values representing each of the pixel's color values, red, green, and blue, or by comparing corresponding numerical values representing a composite color value. The threshold determination is performed by comparing the absolute value of the difference between each of the corresponding pixel values to a pre-selected change threshold value. After determining that the threshold has been exceeded, the next consecutive inbound frame is captured and stored in a frame buffer memory as a new reference frame. All of the stored reference frames are transmitted from the frame buffer memory for display to a display object in accordance with the display object's frame refresh rate.