IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0526982
(2000-03-15)
|
발명자
/ 주소 |
- Rhoads, Geoffrey B.
- Sharma, Ravi K.
|
출원인 / 주소 |
|
대리인 / 주소 |
Meyer, Joel R.Digimarc Corporation
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인용정보 |
피인용 횟수 :
107 인용 특허 :
12 |
초록
▼
To enhance decoding of signals suspected of containing a watermark, a suspect signal is screened to compute detection values evincing presence and strength of a watermark. Screening strategies control detector actions, such as rejecting un-marked signals and improving synchronization of watermarks i
To enhance decoding of signals suspected of containing a watermark, a suspect signal is screened to compute detection values evincing presence and strength of a watermark. Screening strategies control detector actions, such as rejecting un-marked signals and improving synchronization of watermarks in suspect signals.
대표청구항
▼
To enhance decoding of signals suspected of containing a watermark, a suspect signal is screened to compute detection values evincing presence and strength of a watermark. Screening strategies control detector actions, such as rejecting un-marked signals and improving synchronization of watermarks i
To enhance decoding of signals suspected of containing a watermark, a suspect signal is screened to compute detection values evincing presence and strength of a watermark. Screening strategies control detector actions, such as rejecting un-marked signals and improving synchronization of watermarks in suspect signals. 9/189; US-5566234, 19961000, Reed et al., 379/188; US-5602906, 19970200, Phelps; US-5615408, 19970300, Johnson et al., 455/033.1; US-5638430, 19970600, Hogan et al., 379/112.01; US-5638431, 19970600, Everett et al., 379/115; US-5708422, 19980100, Blonder et al.; US-5732400, 19980300, Mandler et al., 705/026; US-5768354, 19980600, Lange et al., 379/189; US-5802156, 19980900, Felger; US-5809125, 19980900, Gammino, 379/189; US-5875236, 19990200, Jankowitz et al., 379/114.01; US-5894510, 19990400, Felger; US-5903633, 19990500, Lorsch, 379/114.01; US-5907602, 19990500, Peel et al., 379/114; US-5933480, 19990800, Felger; US-5937037, 19990800, Kamel et al., 379/088.19; US-5960069, 19990900, Felger; US-5963625, 19991000, Kawecki et al., 379/114.01; US-5987118, 19991100, Dickerman et al., 379/265; US-6185545, 20010200, Resnick et al.; US-6188761, 20010200, Dickerman et al.; US-6404866, 20020600, Hopper et al., 379/114.15 ion characteristic equivalent to a fat tissue and said solid has an attenuation characteristic equivalent to a glandular tissue. 16. The radiation device as set forth in claim 15, wherein said liquid is an oil. 17. The radiation device as set forth in claim 1, wherein said reference materials are construed as blocks. 18. The radiation device as set forth in claim 1, wherein said reference materials are construed as wedges. 19. The radiation device as set forth in claim 1, wherein said reference materials are construed in cylindrical compartments. 20. The radiation device as set forth in claim 1, wherein said radiation means is a single energy X-ray absorptiometer. 21. The radiation device as set forth in claim 1, wherein said radiation means is a single photon absorptiometer. 22. The radiation device as set forth in claim 1, wherein said detector presents said attenuated beams in attenuation values. 23. The radiation device as set forth in claim 1, wherein said attenuation values are presented by said detector according to a color scheme. 24. The radiation device as set forth in claim 1, wherein said attenuation values are presented by said detector according to a gray scale. 25. The radiation device as set forth in claim 1, wherein said calculating means further comprises means for correcting said attenuation values for position dependent variations of said radiation means. 26. A method for comparatively determining a proportion of body materials defining a body part, comprising the steps of: (a) providing a device for retaining therein said body part in a uniform position; (b) providing at least two reference materials having attenuation characteristics, said reference materials being positioned for said comparative determination during a simultaneous irradiation of said body part and said reference materials, and wherein said attenuation characteristics are selected in correspondence to said body materials; (c) providing a radiation means for simultaneously irradiating said body part and said reference materials thereby creating attenuated beams of said materials and said body part; (d) providing a detector to detect said attenuated beams as attenuated values of said materials and said body part; (e) providing a calculating means for calculating said proportion of said body materials defining a body part based on said attenuated values of said materials and said body part. 27. The method as set forth in claim 26, wherein said body part is a breast and said proportion is a breast density. 28. The method as set forth in claim 26, wherein said step of providing a retaining device further comprises the step of providing means for adjusting to host and retain said body part and said materials of various sizes. 29. The method as set forth in claim 26, wherein said reference materials are solids. 30. The method as set forth in claim 29, wherein one of said attenuation characteristics of said reference materials is equivalent to an attenuation characteristic of a fat tissue. 31. The method as set forth in claim 29, wherein one of said attenuation characteristics of said reference materials is equivalent to an attenuation characteristic of a glandular tissue. 32. The method as set forth in claim 26, wherein said reference materials are liquids contained in compartments. 33. The method as set forth in claim 32, wherein one of said attenuation characteristics of said reference materials is equivalent to an attenuation characteristic of a fat tissue. 34. The method as set forth in claim 33, wherein one of said liquids is an oil. 35. The method as set forth in claim 32, wherein one of said attenuation characteristics of said reference materials is equivalent to an attenuation characteristic of a glandular tissue. 36. The method as set forth in claim 35, wherein one of said liquids is a water. 37. The method as set forth in claim 26, wherein at least one of said reference materials is a solid and at least one of said reference m
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