Method and apparatus for squelching dependent on detected bond rate to reduce unwanted audible noise on a mixed voice data channel
Patent 4972510 Issued on November 20, 1990. Estimated Expiration Date: 
August 16, 2009. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
August 16, 2009. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3927376 Decoder for transmitted message activation code Encoder for transmitted message deactivation code Acknowledge back pager with adaptive variable transmitter output power Patent #: 4825193 InventorsAssigneeApplicationNo. 394460 filed on 08/16/1989US Classes:455/212, With squelch or other audio output silencing370/465, Adaptive370/493, Combined voice and data transmission375/351, Gating, blanking, etc.455/218, Squelch455/229Responsive to carrier absence or presenceExaminersPrimary: Eisenzopf, Reinhard J.Assistant: Charouel, Lisa Attorney, Agent or FirmForeign Patent References
International ClassH04B 001/10AbstractUnwanted audible noise on a mixed voice data channel is reduced by disabling an audio output device in a radio receiver or transceiver when the receiver determines that the RF signal received contains binary digital bit data. Alternatively, the receiver enables the audio output device when it determines that the RF signal received does not contain binary digital bit data. | |
