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Electronic apparatus and method
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Patent number 11,452,171
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Issue date Sep 20, 2022
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Kabushiki Kaisha Toshiba
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Daisuke Uchida
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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Selective calling decoder
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Patent number 4,818,989
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Issue date Apr 4, 1989
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Rockwell International Corporation
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Willard F. Werth
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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Digital tone squelch detector
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Patent number 4,783,845
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Issue date Nov 8, 1988
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ITT Aerospace Optical
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James R. McChesney
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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Tone decoder
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Patent number 4,769,610
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Issue date Sep 6, 1988
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Motorola, Inc.
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Karl R. Weiss
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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Tone detection arrangement
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Patent number 4,539,646
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Issue date Sep 3, 1985
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U.S. Philips Corporation
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Paul J. Stein
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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Tone signal detectors
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Patent number 4,313,107
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Issue date Jan 26, 1982
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Nippon Electric Co., Ltd.
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Toshihiro Mori
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G08 - SIGNALLING
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Tone detector
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Patent number 4,211,938
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Issue date Jul 8, 1980
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International Mobile Machines Incorporated
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Duane R. Bolgiano
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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Tone decoder
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Patent number 4,197,525
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Issue date Apr 8, 1980
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Rothenbuhler Engineering Co.
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Galen A. Biery
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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Tone phase shift detector
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Patent number 4,171,516
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Issue date Oct 16, 1979
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General Electric Company
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Richard F. Challen
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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Digital tone decoder system
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Patent number 4,142,177
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Issue date Feb 27, 1979
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Motorola, Inc.
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Walter L. Davis
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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Tone signal detecting circuit
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Patent number 4,127,846
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Issue date Nov 28, 1978
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Nippon Electric Co., Ltd.
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Toshihiro Mori
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H04 - ELECTRIC COMMUNICATION TECHNIQUE