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Patent Searching and Data


Title:
PULSE MODULATION CIRCUIT AND PULSE MODULATION METHOD
Document Type and Number:
WIPO Patent Application WO/2007/148691
Kind Code:
A1
Abstract:
Provided is a pulse modulation circuit capable of generating a pulse modulation signal with a steep rise and a desired pulse width at a desired timing not depending on a transmission signal sequence. In this circuit, a control signal generation unit (110) generates a first control signal if transmission data (S11) is "1" and a second control signal if the transmission data (S11) is "0". The control signal generation unit (110) controls an oscillator (1200) of an intermittently operating circuit (120) to be at an oscillation state for outputting a desired first oscillation signal while the first control signal is turned ON and controls the oscillator (1200) to be at an idling state for outputting a second oscillation signal having a lower amplitude than the first oscillation signal while the second control signal is turned ON.

Inventors:
SATO, Junji (())
佐藤 潤二 (())
KOBAYASHI, Shigeru (())
Application Number:
JP2007/062327
Publication Date:
December 27, 2007
Filing Date:
June 19, 2007
Export Citation:
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Assignee:
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. (1006, Oaza Kadoma Kadoma-sh, Osaka 01, 5718501, JP)
松下電器産業株式会社 (〒01 大阪府門真市大字門真1006番地 Osaka, 5718501, JP)
SATO, Junji (())
佐藤 潤二 (())
International Classes:
H03C7/02; H03C1/00; H03K7/02; H04L27/04
Foreign References:
JP2004112247A
JP2001326698A
JPS6159950A
JPH1174938A
JPH0270524U
Attorney, Agent or Firm:
WASHIDA, Kimihito (5th Floor, Shintoshicenter Bldg.24-1, Tsurumaki 1-chom, Tama-shi Tokyo 34, 2060034, JP)
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