Hearing aid device or hearing device system with a clock generator
Patent 7421085 Issued on September 2, 2008. Estimated Expiration Date: 
September 30, 2023. 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.
September 30, 2023. 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 3781695 Low jitter phase-locked loop Quotient phase-shift processor for digital phase-locked-loops Frequency controlled reference clock generator Hearing aid with wireless remote processor Telemetry system with phase-locking noise suppressing receiver Patent #: 6329929 InventorsAssigneeApplicationNo. 10675304 filed on 09/30/2003US Classes:381/312, HEARING AIDS, ELECTRICAL381/315Remote control, wireless, or alarmExaminersPrimary: Kuntz, CurtisAssistant: Dabney, Phylesha Attorney, Agent or FirmForeign Patent References
International ClassH04R 25/00AbstractDue to the clocked mode of operation, electromagnetic interference signals originate from digital hearing aid device or hearing device systems with the clock frequency and its harmonics. These can disrupt the wireless signal transmission between the hearing aid device or hearing device system and a further device. To prevent these disruptions, the invention provides a jitter unit that is connected with the clock generator and causes frequency oscillations in the clock signal. The interference signals caused by the clock signal are thereby lowered with respect to their amplitudes, whereby an interference-free signal transmission is enabled between a transmitting and/or receiving unit connected with a hearing aid device and an external device.Field of SearchHEARING AIDS, ELECTRICALDirectional Programming interface circuitry Remote control, wireless, or alarm Spectral control Wideband gain control Inductive pickup Noise compensation circuit Feedback suppression Muting circuit and squelch Phase error or phase jitter Antinoise or distortion (includes predistortion) Power amplifier Carrier recovery circuit or carrier tracking Phase locked loop Phase displacement, slip or jitter correction Phase locking | |
