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Wireless intercom having a transceiver in which a bias current for the condenser microphone and the driving current for 원문보기

IPC분류정보
국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판)
  • H04B-001/46
출원번호 US-0695998 (1991-05-06)
발명자 / 주소
  • Chen Shih-Chung (1-21
  • Yu Lo Hsin Tsuen
  • Nan Yang Road Feng Yuan
  • Taichung TWX)
인용정보 피인용 횟수 : 70  인용 특허 : 0

초록 ▼

In a voice-controllable transceiver of a wireless intercom, the bias voltage for the condenser microphone is divided during transmission to give a current of 0.6 mA to 1mA. During reception, the driving voltage for the speaker is multiplied and rectified to a current of 1mA to 30mA. Both currents ar

대표청구항 ▼

In a wireless intercom system including a wireless intercom main set and a voice control circuit, the improvement wherein said voice control circuit comprises: a first condenser microphone; an amplifying circuit connected to the first condenser microphone; an integrating circuit connected to an outp

이 특허를 인용한 특허 (70)

  1. Milne,Gregory L; Rawlins,Michael W; Rawlins,Gregory S, Active polyphase inverter filter for quadrature signal generation.
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  3. Sorrells, David F.; Bultman, Michael J.; Cook, Robert W.; Looke, Richard C.; Moses, Jr., Charley D.; Rawlins, Gregory S.; Rawlins, Michael W., Apparatus and method for down-converting electromagnetic signals by controlled charging and discharging of a capacitor.
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  4. Sorrells, David F.; Bultman, Michael J.; Cook, Robert W.; Looke, Richard C.; Moses, Jr., Charley D.; Rawlins, Gregory S.; Rawlins, Michael W., Apparatus and method for down-converting electromagnetic signals by controlled charging and discharging of a capacitor.
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  5. Sorrells, David F.; Bultman, Michael J.; Cook, Robert W.; Looke, Richard C.; Moses, Jr., Charley D.; Rawlins, Gregory S.; Rawlins, Michael W., Apparatus and method of differential IQ frequency up-conversion.
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  6. Sorrells, David F.; Bultman, Michael J.; Cook, Robert W.; Looke, Richard C.; Moses, Jr., Charley D.; Rawlins, Gregory S.; Rawlins, Michael W., Apparatus and method of differential IQ frequency up-conversion.
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  7. Sorrells, David F.; Bultman, Michael J.; Cook, Robert W.; Looke, Richard C.; Moses, Jr., Charley D.; Rawlins, Gregory S.; Rawlins, Michael W., Apparatus and method of differential IQ frequency up-conversion.
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  8. Sorrells,David F.; Bultman,Michael J.; Cook,Robert W.; Looke,Richard C.; Moses, Jr.,Charley D.; Rawlins,Gregory S.; Rawlins,Michael W., Apparatus, system, and method for down-converting and up-converting electromagnetic signals.
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  9. Sorrells,David F.; Bultman,Michael J.; Cook,Robert W.; Looke,Richard C.; Moses, Jr.,Charley D.; Rawlins,Gregory S.; Rawlins,Michael W., Apparatus, system, and method for up-converting electromagnetic signals.
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  10. Sorrells, David F.; Bultman, Michael J.; Cook, Robert W.; Looke, Richard C.; Moses, Jr., Charley D., Applications of universal frequency translation.
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  11. Sorrells, David F.; Bultman, Michael J.; Cook, Robert W.; Looke, Richard C.; Moses, Jr., Charley D., Applications of universal frequency translation.
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  12. Sorrells, David F.; Bultman, Michael J.; Cook, Robert W.; Looke, Richard C.; Moses, Jr., Charley D., Applications of universal frequency translation.
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  13. Zick, Jonathan A.; Santana, Jr., George L.; Rozwadowski, David J.; Zeiler, Jeffrey M.; Bublitz, Scott D.; Ottens-Rendon, Melissa A., Audio and charging system with audio device, power tool battery, and external battery charger.
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  14. Cole, Jr., Steven W.; Gray, Richard E., Battery charging jobsite lunchbox.
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  15. Chang, Joseph Sylvester; Lee, Chai Lung; Ge, Tong, Communications apparatus.
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  16. Sorrels, David F.; Bultman, Michael J.; Cook, Robert W.; Jensen, Jonathan S.; Johnson, Martin R.; Looke, Richard C.; Moses, Jr., Charley D; Rawlins, Gregory S.; Rawlins, Michael W.; Short, Robert T.; Young, Jamison L., DC offset, re-radiation, and I/Q solutions using universal frequency translation technology.
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  17. Sorrells, David F.; Bultman, Michael J.; Cook, Robert W.; Jensen, Jonathan S.; Johnson, Martin R.; Looke, Richard C.; Moses, Jr., Charley D.; Rawlins, Gregory S.; Rawlins, Michael W.; Short, Robert T.; Young, Jamison L., Down-conversion of an electromagnetic signal with feedback control.
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  18. Sorrells, David F.; Bultman, Michael J.; Cook, Robert W.; Jensen, Jonathan S.; Johnson, Martin R.; Looke, Richard C.; Moses, Jr., Charley D.; Rawlins, Gregory S.; Rawlins, Michael W.; Short, Robert T.; Young, Jamison L., Down-conversion of an electromagnetic signal with feedback control.
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  19. Sorrells,David F.; Bultman,Michael J.; Cook,Robert W.; Looke,Richard C.; Moses, Jr.,Charley D.; Rawlins,Gregory S.; Rawlins,Michael W., Down-converting electromagnetic signals, including controlled discharge of capacitors.
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  20. Zick,Jonathan A.; Santana, Jr.,George L.; Rozwadowski,David J.; Zeiler,Jeffrey M., Electrical combination, electrical component and battery charger.
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  23. Zick, Jonathan A.; Santana, Jr., George L.; Rozwadowski, David J.; Zeiler, Jeffrey M.; Bublitz, Scott D.; Ottens Rendon, Melissa A., Electrical component, audio component, or electrical combination having a selectively connectable battery charger.
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  24. Zick, Jonathan A.; Santana, Jr., George L.; Rozwadowski, David J.; Zeiler, Jeffrey M.; Bublitz, Scott D.; Ottens-Rendon, Melissa A., Electrical component, such as a radio, MP3 player, audio component, battery charger, radio/charger, MP3 player/radio, MP3 player/charger or MP3 player/radio/charger, having a selectively connectable battery charger.
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  25. Zick,Jonathan A.; Santana, Jr.,George L.; Rozwadowski,David J.; Zeiler,Jeffrey M., Electrical component, such as a radio, audio component, battery charger or radio/charger.
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  26. Sorrells, David F.; Bultman, Michael J.; Cook, Robert W.; Looke, Richard C.; Moses, Jr., Charley D., Frequency up-conversion using a harmonic generation and extraction module.
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  27. Rawlins, Gregory S.; Brown, Kevin; Rawlins, Michael W.; Sorrells, David F., Gain control in a communication channel.
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  28. Rawlins, Gregory S.; Brown, Kevin; Rawlins, Michael W.; Sorrells, David F., Gain control in a communication channel.
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  29. Yamkovoy, Paul G.; Pape, David D., Intercom headset connection and disconnection responses.
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  30. Rawlins,Gregory S.; Rawlins,Michael W.; Sorrells,David F., Method and apparatus for a parallel correlator and applications thereof.
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  31. Sorrells,David F; Bultman,Michael J; Cook,Robert W; Looke,Richard C; Moses, Jr.,Charley D; Rawlins,Gregory S; Rawlins,Michael W, Method and apparatus for improving dynamic range in a communication system.
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  32. Rawlins,Gregory S.; Rawlins,Michael W.; Sorrells,David F., Method and apparatus for the parallel correlator and applications thereof.
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  33. Sorrells,David F.; Bultman,Michael J.; Cook,Robert W.; Looke,Richard C.; Moses, Jr.,Charley D., Method and circuit for down-converting a signal.
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  34. Sorrells,David F.; Bultman,Michael J.; Cook,Robert W.; Looke,Richard C.; Moses, Jr.,Charley D.; Rawlins,Michael W.; Rawlins,Gregory S., Method and circuit for down-converting a signal.
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  35. Sorrells, David F.; Bultman, Michael J.; Cook, Robert W.; Looke, Richard C.; Moses, Jr., Charley D.; Rawlins, Gregory S.; Rawlins, Michael W., Method and system for down-converting an electromagnetic signal, and transforms for same.
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  36. Sorrells, David F.; Bultman, Michael J.; Cook, Robert W.; Looke, Richard C.; Moses, Charley D.; Rawlins, Gregory S.; Rawlins, Michael W., Method and system for down-converting an electromagnetic signal, and transforms for same, and aperture relationships.
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  37. Sorrells, David F.; Bultman, Michael J.; Cook, Robert W.; Looke, Richard C.; Moses, Charley D.; Rawlins, Gregory S.; Rawlins, Michael W., Method and system for down-converting an electromagnetic signal, and transforms for same, and aperture relationships.
    상세보기
  38. Sorrells, David F.; Bultman, Michael J.; Cook, Robert W.; Looke, Richard C.; Moses, Jr., Charley D.; Rawlins, Gregory S.; Rawlins, Michael W., Method and system for down-converting an electromagnetic signal, and transforms for same, and aperture relationships.
    상세보기
  39. Sorrells, David F.; Bultman, Michael J.; Cook, Robert W.; Looke, Richard C.; Moses, Jr., Charley D.; Rawlins, Gregory S.; Rawlins, Michael W., Method and system for down-converting an electromagnetic signal, transforms for same, and aperture relationships.
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  40. Sorrells, David F.; Bultman, Michael J.; Cook, Robert W.; Looke, Richard C.; Moses, Jr., Charley D.; Rawlins, Gregory S.; Rawlins, Michael W., Method and system for down-converting and electromagnetic signal, and transforms for same.
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  41. Sorrells,David F.; Bultman,Michael J.; Cook,Robert W.; Looke,Richard C.; Moses, Jr.,Charley D.; Rawlins,Gregory S.; Rawlins,Michael W., Method and system for down-converting and up-converting an electromagnetic signal, and transforms for same.
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  42. Sorrells, David F.; Bultman, Michael J.; Cook, Robert W.; Looke, Richard C.; Moses, Jr., Charley D., Method and system for frequency down-conversion and frequency up-conversion.
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  43. Sorrells, David F.; Bultman, Michael J.; Cook, Robert W.; Looke, Richard C.; Moses, Jr., Charley D., Method and system for frequency up-conversion.
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  44. Sorrells,David F; Bultman,Michael J; Cook,Robert W; Looke,Richard C; Moses, Jr.,Charley D, Method and system for frequency up-conversion.
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  45. Sorrells, David F.; Bultman, Michael J.; Cook, Robert W.; Looke, Richard C.; Moses, Jr., Charley D., Method and system for frequency up-conversion with modulation embodiments.
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  46. Sorrells,David F.; Bultman,Michael J.; Cook,Robert W.; Looke,Richard C.; Moses, Jr.,Charley D., Method and system for frequency up-conversion with modulation embodiments.
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  47. Sorrells, David F.; Bultman, Michael J.; Cook, Robert W.; Looke, Richard C.; Moses, Jr., Charley D.; Rawlins, Gregory S.; Rawlins, Michael W., Method, system, and apparatus for balanced frequency up-conversion of a baseband signal.
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  48. Sorrells, David F.; Bultman, Michael J.; Cook, Robert W.; Looke, Richard C.; Moses, Jr., Charley D.; Rawlins, Gregory S.; Rawlins, Michael W., Method, system, and apparatus for balanced frequency up-conversion, including circuitry to directly couple the outputs of multiple transistors.
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  49. Sorrells, David F.; Bultman, Michael J.; Cook, Robert W.; Looke, Richard C.; Moses, Jr., Charley D., Methods and systems for down-converting a signal using a complementary transistor structure.
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  50. Sorrells,David F.; Bultman,Michael J.; Cook,Robert W.; Looke,Richard C.; Moses, Jr.,Charley D., Methods and systems for down-converting a signal using a complementary transistor structure.
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  51. Rawlins, Gregory S.; Kassel, Ray, Methods, systems, and computer program products for parallel correlation and applications thereof.
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  52. Rawlins,Gregory S.; Kassel,Ray, Methods, systems, and computer program products for parallel correlation and applications thereof.
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  53. Wilker, Scott D.; Wilker, Jordan D., Modular quick-connect A/V system and methods thereof.
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  54. Wilker, Scott D.; Wilker, Jordan D., Modular quick-connect A/V system and methods thereof.
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  55. Parker, Jeffrey L.; Sorrells, David F., Networking methods and systems.
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  56. Parker,Jeffrey L.; Sorrells,David F., Networking methods and systems.
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  57. Sorrells, David F., Networking methods and systems.
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  58. Sorrells,David F., Networking methods and systems.
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  59. Smith,Francis J.; Bultman,Michael J.; Cook,Robert W.; Looke,Richard C.; Moses, Jr.,Charley D.; Rawlins,Gregory S.; Rawlins,Michael W.; Short,Robert T.; Sorrells,David F.; Stoneking,Danny E., Optical down-converter using universal frequency translation technology.
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  60. Johnson,Martin R; Jensen,Jonathan S; Short,Robert T; Young,Jamison L; Sorrells,David F; Bultman,Michael J; Cook,Robert W; Looke,Richard C; Moses, Jr.,Charley D, Phased array antenna applications of universal frequency translation.
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  61. Johnson, Martin R; Jensen, Jonathan S; Short, Robert T.; Young, Jamison L.; Sorrells, David F; Bultman, Michael J.; Cook, Robert W; Looke, Richard C.; Moses, Jr., Charley D., Phased array antenna applications on universal frequency translation.
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  62. Cole, Jr., Steven W.; Voruganti, Ravi; Ng, Wing Hoi; Cheung, Kam Chow, Portable battery charging and audio unit.
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  63. Sorrells,David F; Bultman,Michael J; Cook,Robert W; Looke,Richard C; Moses, Jr.,Charley D; Rawlins,Gregory S; Rawlins,Michael W, Reducing DC offsets using spectral spreading.
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  64. Kite Karen Jeanne, Remote operational screener.
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  65. Sorrells, David F.; Bultman, Michael J.; Clements, Charles D.; Cook, Robert W.; Hamilla, Joseph M.; Looke, Richard C.; Moses, Jr., Charley D.; Rawlins, Gregory S.; Rawlins, Michael W.; Silver, Gregory S., Spread spectrum applications of universal frequency translation.
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  66. Sorrells,David F.; Bultman,Michael J.; Cook,Robert W.; Looke,Richard C.; Moses, Jr.,Charley D., Universal platform module and methods and apparatuses relating thereto enabled by universal frequency translation technology.
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  67. Sorrells, David F.; Bultman, Michael J.; Cook, Robert W.; Looke, Richard C.; Moses, Jr., Charley D., Universal platform module for a plurality of communication protocols.
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  68. Sorrells, David F.; Bultman, Michael J.; Cook, Robert W.; Looke, Richard C.; Moses, Jr., Charley D., Up-conversion based on gated information signal.
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  69. Sorrells, David F.; Bultman, Michael J.; Cook, Robert W.; Looke, Richard C.; Moses, Jr., Charley D.; Rawlins, Gregory S.; Rawlins, Michael W., Wireless local area network (WLAN) using universal frequency translation technology including multi-phase embodiments.
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  70. Sorrells, David F.; Bultman, Michael J.; Cook, Robert W.; Looke, Richard C.; Moses, Jr., Charley D.; Rawlins, Gregory S.; Rawlins, Michael W., Wireless local area network (WLAN) using universal frequency translation technology including multi-phase embodiments and circuit implementations.
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