Recording/reproducing apparatus using reference oscillator for digital audio
Patent 7015848 Issued on March 21, 2006. Estimated Expiration Date: 
February 10, 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.
February 10, 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 3629582 High accuracy frequency standard and clock system Time scale computation system including complete and weighted ensemble definition Camera having a data recording function Patent #: 5296884 InventorsAssigneeApplicationNo. 10503980 filed on 02/10/2003US Classes:341/155, Analog to digital conversion360/1, RECORDING ON OR REPRODUCING FROM AN ELEMENT OF DIVERSE UTILITY360/39, GENERAL PROCESSING OF A DIGITAL SIGNAL250/363.01, With radiant energy source702/178, Timekeeping (e.g., clock, calendar, stopwatch)396/311Data for control of subsequent processing of filmExaminersPrimary: Williams, Howard L.Attorney, Agent or FirmForeign Patent References
International ClassH03M 1/00AbstractA recording/reproducing method and an apparatus for carrying out the same are disclosed wherein a cesium atomic clock, a hydrogen atomic clock or a mercury atomic clock (1) is used as a digital audio reference oscillator so as to minimize jitter which may occur during a recording process performed after analog-to-digital conversion or digital-to-digital conversion, or during digital-to-analog conversion. With the jitter thus minimized, acoustic characteristics including jitter noise and sound resolution are greatly improved, and a sound can be reproduced with high sound quality and high fidelity that are comparable to those achieved in an analog audio system. | |
