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Double conversion digital tuning system using separate digital numbers for controlling the local oscillators 원문보기

IPC분류정보
국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판)
  • H04N-005/50
출원번호 US-0931172 (1992-08-17)
발명자 / 주소
  • Dobrovolny Pierre (North Riverside IL)
출원인 / 주소
  • Zenith Electronics Corporation (Glenview IL 02)
인용정보 피인용 횟수 : 53  인용 특허 : 0

초록 ▼

A double conversion tuning system for a high definition television receiver includes a microprocessor supplying first and second digital numbers to first and second local oscillators. The first local oscillator is controlled by a wide band phase locked loop that includes a programmable divider that

대표청구항 ▼

A method of double converting a digital RF signal to a fixed second IF signal frequency based upon the RF signal channel number comprising: generating a first digital number; supplying said first digital number to a low noise phase locked loop for controlling the frequency of a first local oscillato

이 특허를 인용한 특허 (53)

  1. Sakurai, Kiyoshi, Angle demodulation apparatus, local oscillation apparatus, angle demodulation method, local oscillation signal generating method, recording medium and computer data signal.
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  2. Sakurai, Kiyoshi, Angle demodulation apparatus, local oscillation apparatus, angle demodulation method, local oscillation signal generating method, recording medium and computer data signal.
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  3. Lo Curto Michelangelo,ITX ; De Marzi Giuseppe,ITX ; Dimonte Giuseppe,ITX, Automatic local oscillator frequency stabilization process in radio receivers employing a wide-band tunable local dielectric-resonator oscillator and associated device.
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  4. Birleson, S. Vincent; Taddiken, Albert H.; Clayton, Kenneth W., Broadband integrated television tuner.
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  6. Birleson, Vince; Taddiken, Albert; Clayton, Ken, Broadband integrated tuner.
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  7. Birleson,Vincent; Taddiken,Albert; Clayton,Ken, Broadband integrated tuner.
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  8. Galchev, Galin; Kilian, Frank; Luik, Oliver; Marwinski, Dirk; Petev, Petio, Cache region concept.
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  9. Galchev, Galin; Kilian, Frank; Luik, Oliver; Marwinski, Dirk; Petev, Petio G., Cache region concept.
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  10. Ramesh, Sridhar; Anantharaman, Subramanian; Maller, Harish, Detection and compensation of dielectric resonator oscillator frequency drift.
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  11. Ramesh, Sridhar; Anantharaman, Subramanian; Maller, Harish, Detection and compensation of dielectric resonator oscillator frequency drift.
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  12. Ward, Christopher M.; Vorenkamp, Pieter, Differential crystal oscillator.
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  13. Mizukami Hiroyuki,JPX ; Igarashi Yutaka,JPX ; Nagashima Toshio,JPX, Digital broadcasting receiver.
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  14. Green, Brian D., Digital stereo recovery circuitry and method for radio receivers.
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  16. Petev, Petio G.; Galchev, Galin; Kilian, Frank; Luik, Oliver; Marwinski, Dirk, Distributed cache architecture.
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  17. Takayama Akira,JPX ; Komatsu Michihiro,JPX, Double conversion television tuner.
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  18. Kawai,Satoshi, Dual digital television tuner.
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  19. Birleson, Vince, Dual mode tuner for co-existing digital and analog television signals.
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  21. Coronel Arredondo, David; Campos, Eduardo Enrrique Arguello, Elimination of spurious signals in double conversion tuner using a dynamic intermediate frequency and a preselected crystal reference frequency.
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  26. Vorenkamp, Pieter; Bult, Klaas; Carr, Frank; Ward, Christopher M.; Duncan, Ralph; Kwan, Tom W.; Chang, James Y. C.; Khorramabadi, Haideh, Fully integrated tuner architecture.
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  27. Vorenkamp,Pieter; Bult,Klaas; Carr,Frank; Ward,Christopher M.; Duncan,Ralph; Kwan,Tom W.; Chang,James Y. C.; Khorramabadi,Haideh, Fully integrated tuner architecture.
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  28. Vorenkamp,Pieter; Bult,Klaas; Carr,Frank; Ward,Christopher M.; Duncan,Ralph; Kwan,Tom W.; Chang,James Y. C.; Khorramabadi,Haideh, Fully integrated tuner architecture.
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  29. Duncan, Ralph; Kwan, Tom W., Integrated VCO having an improved tuning range over process and temperature variations.
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  31. Bult, Klaas; Gomez, Ramon A., Integrated switchless programmable attenuator and low noise amplifier.
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  35. Petev, Petio G.; Wintergerst, Michael, Least recently used eviction implementation.
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  36. Han Dong-Suck,KRX, Method for reducing carrier recovery time in high definition television receiver.
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  41. Vorenkamp, Pieter; Bult, Klaas; Carr, Frank, System and method for coarse/fine PLL adjustment.
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  43. Ashby, Kirk B.; Taddiken, Albert H.; Birleson, S. Vincent, System and method for frequency translation using an image reject mixer.
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  45. Ashby,Kirk B.; Taddiken,Albert H.; Birleson,S. Vincent, System and method for frequency translation using an image reject mixer.
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  46. Ralph Duncan ; Tom W. Kwan, System and method for narrow band PLL tuning.
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  47. Carr,Frank; Vorenkamp,Pieter, System and method for providing a low power receiver design.
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  48. Frank Carr ; Pieter Vorenkamp, System and method for providing a low power receiver design.
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  49. Norsworthy, John P.; Birleson, Stanley Vincent; Bartek, Douglas J., System and method for providing fast acquire time tuning of multiple signals to present multiple simultaneous images.
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  50. Abe Shuji,JPX ; Oto Hideki,JPX ; Adachi Toshimasa,JPX ; Kudo Katsuya,JPX, Tuner circuit.
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  51. Badger David Mark ; Stewart John Sidney ; Pugel Michael Anthony, Tuning system for a digital satellite receiver with fine tuning provisions.
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  52. Yoshihiro Sato JP; Masaki Yamamoto JP; Hideo Nishi JP; Fumiaki Miyamitsu JP, UHF/VHF turner.
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  53. Richter,Kurt J.; Bolton,Jerry T., Use of an image reject mixer in a forward data channel tuner.
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