IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0565396
(2000-05-05)
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발명자
/ 주소 |
- Gordon, Alexandra
- Grimes, Charles W.
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출원인 / 주소 |
|
대리인 / 주소 |
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인용정보 |
피인용 횟수 :
5 인용 특허 :
10 |
초록
▼
An elongated packaging device is provided for packaging at least one disc-shaped item such as, for example, a recording media disc such as a CD, a CD-ROM or a DVD, together with other materials relating to such disc or otherwise in a stacked relationship. The packaging device includes a first member
An elongated packaging device is provided for packaging at least one disc-shaped item such as, for example, a recording media disc such as a CD, a CD-ROM or a DVD, together with other materials relating to such disc or otherwise in a stacked relationship. The packaging device includes a first member or wafer having an annular first chamber and a first opening for access into such first chamber and an annular protective element for closing such first opening and sealing the first chamber, and a second member or container having a second chamber and a second opening for access into such second container for the storage of a beverage in such second chamber, which second chamber is closed by a cover having an opening at the center thereof for the insertion of a straw. The first member has a cylindrical inner structure defining central support for the disc media and defining a device for penetrating the cover opening.
대표청구항
▼
An elongated packaging device is provided for packaging at least one disc-shaped item such as, for example, a recording media disc such as a CD, a CD-ROM or a DVD, together with other materials relating to such disc or otherwise in a stacked relationship. The packaging device includes a first member
An elongated packaging device is provided for packaging at least one disc-shaped item such as, for example, a recording media disc such as a CD, a CD-ROM or a DVD, together with other materials relating to such disc or otherwise in a stacked relationship. The packaging device includes a first member or wafer having an annular first chamber and a first opening for access into such first chamber and an annular protective element for closing such first opening and sealing the first chamber, and a second member or container having a second chamber and a second opening for access into such second container for the storage of a beverage in such second chamber, which second chamber is closed by a cover having an opening at the center thereof for the insertion of a straw. The first member has a cylindrical inner structure defining central support for the disc media and defining a device for penetrating the cover opening. ng generating a stabilization signal having said error signal as a DC component and a reference modulation signal as the AC component. 7. The method of claim 1, and further comprising: at quadrature, demodulating the digital signal to determine a displacement amplitude of a target of the interferometer. 8. The method of claim 7, said demodulating step further comprising: determining first and second signal amplitudes of a particular harmonic in the digital signal with and without target oscillation; and determining a displacement amplitude of the target based upon the relative magnitudes of the first and second signal amplitudes of the particular harmonic. 9. The method of claim 8, and further comprising eliminating ambiguity in the displacement amplitude by determining a signal amplitude at a harmonic of a target oscillation frequency. 10. An interferometer control system, comprising: means for digitizing an input to obtain a digital signal indicative of optical power; means for determining an optical path length correction required to stabilize the interferometer at quadrature utilizing signal amplitudes appearing at multiple harmonics of the digital signal; and means for outputting an error signal indicative of the optical path length correction. 11. The interferometer control system of claim 10, wherein the means for determining comprises means for computing the signal amplitudes appearing at multiple harmonics of the digital signal utilizing a Goertzel algorithm. 12. The interferometer control system of claim 11, wherein the means for computing comprises means for computing the signal amplitudes appearing at the second and third harmonics of a reference modulation signal component of the digital signal. 13. The interferometer control system of claim 12, and further comprising: means for, if the interferometer is at quadrature, storing the magnitude of the signal amplitude appearing at the third harmonic of the digital signal. 14. The interferometer control system of claim 10, and further comprising: means for computing a magnitude of the error signal; and means for resetting the magnitude of the error signal to an initial value if the magnitude of the error signal magnitude is out of range. 15. The interferometer control system of claim 10, said means for generating comprising means for generating a stabilization signal having said error signal as a DC component and a reference modulation signal as the AC component. 16. The interferometer control system of claim 10, and further comprising: means for demodulating the digital signal when the interferometer is at quadrature to determine a displacement amplitude of a target of the interferometer. 17. The interferometer control system of claim 16, said means for demodulating further comprising: means for determining first and second signal amplitudes of a particular harmonic in the digital signal with and without target oscillation; and means for determining a displacement amplitude of the target based upon the relative magnitudes of the first and second signal amplitudes of the particular harmonic. 18. The interferometer control system of claim 17, and further comprising means for eliminating ambiguity in the displacement amplitude by determining a signal amplitude, at a harmonic of a target oscillation frequency. 19. An interferometer system, comprising: an interferometer; and an interferometer control system in accordance with claim 10, wherein said interferometer control system is coupled to said interferometer. 20. An interferometer control system, comprising: a digital processor; memory, coupled to the processor, that stores stabilization code executable by the processor, wherein the stabilization code causes the processor to determines an optical path length correction required to stabilize an interferometer at quadrature utilizing signal amplitudes appearing at multiple harmonics of a digital signal indicative of an opt
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