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Pulse density modulator with improved pulse distribution

IPC분류정보
국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판)
  • H03M-001/66
출원번호 US-0322539 (1999-05-28)
발명자 / 주소
  • Park Edwin C.
출원인 / 주소
  • VLSI Technology, Inc.
대리인 / 주소
    Hernandez
인용정보 피인용 횟수 : 37  인용 특허 : 17

초록

A pulse density modulator generates output pulses that are optimized as to their even distribution over time. More particularly, the invention represents parallel or serial digital input signals as serial binary output signals, where the binary output pulses are evenly spaced over time to the greate

대표청구항

[ What is claimed is:] [1.]1. A method of providing a serial binary output having pulses that are optimized as to their even distribution over time, comprising operations of:receiving an input signal representing a current digital input value on an input line having N-bits;providing the digital inpu

이 특허에 인용된 특허 (17)

  1. Okada Tomoyuki (Palatine IL) Baranowski Robert (Crystal Lake IL), Adaptive radio receiver controller method and apparatus.
  2. Candy James Charles (Convent Station NJ) Ching Yau-Chau (Morganville NJ), Analog to digital converter with noise suppression.
  3. Watanabe Tadashi (Tokyo JPX), Apparatus for generation of binary pseudo-random numbers.
  4. Wilson Nathaniel B. (San Diego CA) McAllister Gene H. (La Mesa CA), Clock signal generation.
  5. Wine Charles M. (Princeton NJ), Digital-to-analog converter useful in a television receiver.
  6. Candy James Charles (Convent Station NJ) Freeny Stanley Leon (Middletown NJ) Ninke William Herbert (Holmdel NJ), Digital-to-analog converter with digitally distributed amplitude supplement.
  7. Faruque Saleh, Directional pseudonoise offset assignment in a CDMA cellular radiotelephone system.
  8. Candy James C. (Neptune NJ), Higher order interpolation for digital-to-analog conversion.
  9. Gurney David P. (Palatine IL), Method and apparatus for generating Walsh codes.
  10. Brombaugh Eric Martin ; Liebetreu John Michael ; McCallister Ronald Duane, Method and apparatus for translating digital data into an analog signal.
  11. Frank Colin D. ; Ling Fuyun, Method of and apparatus for generating a pseudorandom noise sequence.
  12. Park Gyeong-Lyong (Daejeon KRX) Suh Chung-Wook (Daejeon KRX) Eo Ik-Soo (Daejeon KRX), Power of two length pseudorandom noise sequence generator.
  13. Rueth Timothy I. (Cardiff-by-the-Sea CA) Weaver ; Jr. Lindsay A. (San Diego CA) Gilhousen Klein S. (Bozeman MT), Power-of-two length pseudo-noise sequence generator with fast offset adjustment.
  14. Sutton Todd (San Diego CA) Gregory Sherman (San Diego CA) Waltman Joan T. (San Diego CA) White Katherine W. (San Diego CA), Pulse density modulation circuit (parallel to serial) comparing in a nonsequential bit order.
  15. Ooi Tomoyuki (Tokyo JPX) Hotta Toshinori (Tokyo JPX) Isoe Yasuhito (Tokyo JPX), Scrambling/descrambling method using a memory for storing initial pseudo-random bit patterns respectively for submultifr.
  16. Lafferty Stephen H. (Roswell GA) Lett David B. (Norcross GA), Signal scrambling transmission system.
  17. Gilhousen Klein S. (San Diego CA) Jacobs Irwin M. (La Jolla CA) Padovani Roberto (San Diego CA) Weaver ; Jr. Lindsay A. (San Diego CA) Wheatley ; III Charles E. (Del Mar CA) Viterbi Andrew J. (La Jol, System and method for generating signal waveforms in a CDMA cellular telephone system.

이 특허를 인용한 특허 (37)

  1. Zhao, Bin, Analog-to-digital converter with non-uniform accuracy.
  2. Kris, Bryan, Asymmetric hysteretic controllers.
  3. Santhoff,John; Moore,Steven A.; Rauvola,Roger; Krinke,Charles; Watkins,Bruce, Bridged ultra-wideband communication method and apparatus.
  4. Hsu,Ham Huah, Circuit and method for pulse width modulation.
  5. Zhao, Bin, Duty transition control in pulse width modulation signaling.
  6. Zhao, Bin; Kameya, Andrew M.; Lee, Victor K., Frequency synthesis and synchronization for LED drivers.
  7. Zhao, Bin; Cornish, Jack W.; Horng, Brian B.; Lee, Victor K.; Kameya, Andrew M., LED driver with dynamic headroom control.
  8. Zhao, Bin; Cornish, Jack W.; Horng, Brian B.; Kameya, Andrew M.; Kwok, Kenneth C.; Lee, Victor K., LED driver with dynamic power management.
  9. Zhao, Bin; Cornish, Jack W.; Horng, Brian B.; Lee, Victor K.; Kameya, Andrew M., LED driver with dynamic power management.
  10. Zhao, Bin; Cornish, Jack W.; Horng, Brian B.; Kameya, Andrew M.; Krellner, Jan; Kwok, Kenneth C.; Lee, Victor K.; Xin, Weizhuang W., LED driver with feedback calibration.
  11. Zhao, Bin; Cornish, Jack W.; Horng, Brian B.; Kameya, Andrew M; Krellner, Jan; Kwok, Kenneth C.; Lee, Victor K.; Xin, Weizhuang W., LED driver with frame-based dynamic power management.
  12. Elder, Joseph Scott, LED driver with precharge and track/hold.
  13. Zhao, Bin; Cornish, Jack W.; Horng, Brian B.; Lee, Victor K.; Kameya, Andrew M., LED driver with segmented dynamic headroom control.
  14. Jordan, Scott C., Method and apparatus for increasing effective resolution of analog output of digital-to-analog converter (DAC) having predetermined digital word size, where DAC drives plant.
  15. Twarecki, Artur B.; Batchelor, Mark, Method and apparatus for representation of video and audio signals on a low-resolution display.
  16. Zhao, Bin, Method and device for LED channel managment in LED driver.
  17. Dickey,John A.; DuPuis,Paul B., Method and system for implementing a reduced latency, wideband pulse density modulation digital to analog converter.
  18. Sidiropoulos, Stefanos; Loinaz, Marc; Narayanaswami, R. Sekhar; Acharya, Nikhil; Liu, Dean, Methods and apparatus for frequency synthesis with feedback interpolation.
  19. Sidiropoulos, Stefanos, Methods and apparatus to increase the resolution of a clock synthesis circuit that uses feedback interpolation.
  20. Libove, Joel M.; Chacko, Steven J., Methods and apparatuses for multiple sampling and multiple pulse generation.
  21. Joel M. Libove ; Steven J. Chacko, Methods, apparatuses, and systems for sampling or pulse generation.
  22. Pancholi, Deepak; Odedara, Bhavin, Multiphase low LC buck regulator.
  23. Zhao, Bin, Peak detection with digital conversion.
  24. Zhao, Bin, Phase-shifted pulse width modulation signal generation.
  25. Zhao, Bin; Cornish, Jack W.; Kameya, Andrew M.; Xin, Weizhuang W., Phase-shifted pulse width modulation signal generation device and method therefor.
  26. Kris, Bryan; Reiter, Andreas; Futo, Tibor; Dumais, Alex, Pulse density digital-to-analog converter with slope compensation function.
  27. Kris, Bryan, Pulse density modulation digital-to-analog converter with triangle wave generation.
  28. Lin, Hung Sheng; Lin, Chin-Wei; Tsai, Tsung-Ting; Youn, Sang Y.; Nho, Hyunwoo, Pulse width modulation (PWM) driving scheme and bezel reduction.
  29. Zhao, Bin; Kameya, Andrew M.; Lee, Victor K., Pulse width modulation frequency conversion.
  30. Zhao, Bin; Kameya, Andrew M.; Lee, Victor K., Pulse width modulation frequency conversion.
  31. Zhao, Bin, Pulse width modulation with effective high duty resolution.
  32. Liu, Dean; Loinaz, Marc J.; Sidiropoulos, Stefanos, Repeate architecture with single clock multiplier unit.
  33. Zhao, Bin, Serial cascade of minimium tail voltages of subsets of LED strings for dynamic power control in LED displays.
  34. Zhao, Bin, Serial configuration for dynamic power control in LED displays.
  35. Zhao, Bin, Synchronized phase-shifted pulse width modulation signal generation.
  36. Kris, Bryan, Variable frequency ratiometric multiphase pulse width modulation generation.
  37. Kris, Bryan, Variable frequency ratiometric multiphase pulse width modulation generation.
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