Patents by Inventor Willard K. Bucklen
Willard K. Bucklen has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 6975362Abstract: A VGA to analog video converter is useful e.g. for displaying video and/or graphics data from a computer onto a large screen television or television monitor. The RGB video signals output from the personal computer are first converted to digital form. The analog-to-digital converter which does this is clocked by a clock signal generated by a phase-locked loop using the horizontal synchronizing signal from the personal computer. The digital RGB signals are then converted to a YCbCR format. A flicker filter eliminates the flickering appearing on the TV monitor by operating on the luminance (Y) component. The YCbCr signals are encoded into NTSC or PAL Standard, and output in composite analog video or S-VHS format. A color subcarrier synthesizer generates the color subcarrier signal to generate an accurate subcarrier frequency for the video output signals. An analog-to-digital clock phase adjustment is used to ensure that the input RGB signals are sampled at the proper instant by the analog-to-digital converters.Type: GrantFiled: May 13, 2002Date of Patent: December 13, 2005Assignee: Fairchild Semiconductor CorporationInventors: Mehdi H. Sani, De Dzwo Hsu, Willard K. Bucklen
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Publication number: 20030020830Abstract: A VGA to analog video converter is useful e.g. for displaying video and/or graphics data from a computer onto a large screen television or television monitor. The RGB video signals output from the personal computer are first converted to digital form. The analog-to-digital converter which does this is clocked by a clock signal generated by a phase-locked loop using the horizontal synchronizing signal from the personal computer. The digital RGB signals are then converted to a YCbCR format. A flicker filter eliminates the flickering appearing on the TV monitor by operating on the luminance (Y) component. The YCbCr signals are encoded into NTSC or PAL Standard, and output in composite analog video or S-VHS format. A color subcarrier synthesizer generates the color subcarrier signal to generate an accurate subcarrier frequency for the video output signals. An analog-to-digital clock phase adjustment is used to ensure that the input RGB signals are sampled at the proper instant by the analog-to-digital converters.Type: ApplicationFiled: May 13, 2002Publication date: January 30, 2003Inventors: Mehdi H. Sani, De Dzwo Hsu, Willard K. Bucklen
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Publication number: 20020159725Abstract: Electrically-terminated, optically-coupled communication cables are provided that are suitable for transport of high data rates and are safe for use in consumer communication applications. This safety is ensured with integral cable elements and permanent assembly of these elements.Type: ApplicationFiled: April 3, 2002Publication date: October 31, 2002Applicant: ANALOG DEVICES, INC.Inventor: Willard K. Bucklen
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Patent number: 6429904Abstract: A VGA to analog video converter is useful e.g. for displaying video and/or graphics data from a computer onto a large screen television or television monitor. The RGB video signals output from the personal computer are first converted to digital form. The analog-to-digital converter which does this is clocked by a clock signal generated by a phase-locked loop using the horizontal synchronizing signal from the personal computer. The digital RGB signals are then converted to a YCbCR format. A flicker filter eliminates the flickering appearing on the TV monitor by operating on the luminance (Y) component. The YCbCr signals are encoded into NTSC or PAL Standard, and output in composite analog video or S-VHS format. A color subcarrier synthesizer generates the color subcarrier signal to generate an accurate subcarrier frequency for the video output signals. An analog-to-digital clock phase adjustment is used to ensure that the input RGB signals are sampled at the proper instant by the analog-to-digital converters.Type: GrantFiled: February 13, 2001Date of Patent: August 6, 2002Assignee: Fairchild Semiconductor CorporationInventors: Mehdi H. Sani, De Dzwo Hsu, Willard K. Bucklen
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Publication number: 20010017666Abstract: A VGA to analog video converter is useful e.g. for displaying video and/or graphics data from a computer onto a large screen television or television monitor. The RGB video signals output from the personal computer are first converted to digital form. The analog-to-digital converter which does this is clocked by a clock signal generated by a phase-locked loop using the horizontal synchronizing signal from the personal computer. The digital RGB signals are then converted to a YCbCR format. A flicker filter eliminates the flickering appearing on the TV monitor by operating on the luminance (Y) component. The YCbCr signals are encoded into NTSC or PAL Standard, and output in composite analog video or S-VHS format. A color subcarrier synthesizer generates the color subcarrier signal to generate an accurate subcarrier frequency for the video output signals. An analog-to-digital clock phase adjustment is used to ensure that the input RGB signals are sampled at the proper instant by the analog-to-digital converters.Type: ApplicationFiled: February 13, 2001Publication date: August 30, 2001Inventors: Mehdi H. Sani, De Dzwo Hsu, Willard K. Bucklen
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Patent number: 6219101Abstract: A VGA to analog video converter is useful e.g. for displaying video and/or graphics data from a computer onto a large screen television or television monitor. The RGB video signals output from the personal computer are first converted to digital form. The analog-to-digital converter which does this is clocked by a clock signal generated by a phase-locked loop using the horizontal synchronizing signal from the personal computer. The digital RGB signals are then converted to a YCbCR format. A flicker filter eliminates the flickering appearing on the TV monitor by operating on the luminance (Y) component. The YCbCr signals are encoded into NTSC or PAL Standard, and output in composite analog video or S-VHS format. A color subcarrier synthesizer generates the color subcarrier signal to generate an accurate subcarrier frequency for the video output signals. An analog-to-digital clock phase adjustment is used to ensure that the input RGB signals are sampled at the proper instant by the analog-to-digital converters.Type: GrantFiled: May 15, 1998Date of Patent: April 17, 2001Assignee: Fairchild Semiconductor CorporationInventors: Mehdi H. Sani, De Dzwo Hsu, Willard K. Bucklen
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Patent number: 5786866Abstract: A color subcarrier signal generator for use e.g, in a video converter measures the average error of the horizontal synchronizing signal frequency. The measured error is used as a compensator signal to control a direct digital synthesizer to generate a correct color subcarrier signal. The direct digital frequency synthesizer includes an address generator receiving the error signal and a look up table driven by the address generator.Type: GrantFiled: October 15, 1996Date of Patent: July 28, 1998Assignee: Fairchild Semiconductor CorporationInventors: Mehdi H. Sani, De Dzwo Hsu, Willard K. Bucklen
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Patent number: 4591825Abstract: A parallel analog-to-digital converter employing a novel binary encoding technique to reduce the errors arising from multiple one-to-zero transitions in comparator outputs. An analog signal to be converted is applied in conventional fashion to any array of comparators, from which are obtained an array of output signals having a transition from ones to zeros at the array position corresponding to the analog signal magnitude. The one-to-zero transition is detected by conventional AND gate circuitry and the resulting one-in-(2.sup.n -1) code is transmitted to encoding logic configured to produce a novel form of binary output code. The code is identical to Gray code in all but its least significant bit position, which alternates between one and zero values in the manner of standard binary code. The new code results in a significant reduction in the magnitude of errors arising from multiple transitions between one and zero in the array of comparator outputs.Type: GrantFiled: August 22, 1983Date of Patent: May 27, 1986Assignee: TRW Inc.Inventor: Willard K. Bucklen
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Patent number: 4544914Abstract: A successive approximation analog-to-digital converter controllable by signals to start and interrupt conversion asynchronously with respect to clock signals used to regulate operation of the converter. Separate control signal processing circuits register the occurrence of start-convert and conversion-interrupt signals supplied by a user of the converter, and generate corresponding control signals synchronized with the clock signals. Asynchronous operation of the converter allows it to function in a short-cycling mode, wherein the number of bits of resolution in the conversion process is automatically reduced as little as possible to complete each conversion in the time allotted by the user. A continuous-conversion signal is also provided, to permit operation on a continuous basis, without providing periodic start-convert signals.Type: GrantFiled: April 22, 1983Date of Patent: October 1, 1985Assignee: TRW Inc.Inventors: Daniel F. Chan, Willard K. Bucklen
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Patent number: 4396905Abstract: A successive approximation analog-to-digital converter controllable by signals to start and interrupt conversion asynchronously with respect to clock signals used to regulate operation of the converter. Separate control signal processing circuits register the occurrence of start-convert and conversion-interrupt signals supplied by a user of the converter, and generate corresponding control signals synchronized with the clock signals. Asynchronous operation of the converter allows it to function in a short-cycling mode, wherein the number of bits of resolution in the conversion process is automatically reduced as little as possible to complete each conversion in the time allotted by the user. A continuous-conversion signal is also provided, to permit operation on a continuous basis, without providing periodic start-convert signals.Type: GrantFiled: December 17, 1979Date of Patent: August 2, 1983Assignee: TRW Inc.Inventors: Daniel F. Chan, Willard K. Bucklen