IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0774551
(2001-01-31)
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발명자
/ 주소 |
- Dixon, Walter Vincent
- Van Stralen, Nick Andrew
- Wodnicki, Robert Gideon
- Nieters, Edward James
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출원인 / 주소 |
|
대리인 / 주소 |
Thompson, John F.Breedlove, Jill M.
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인용정보 |
피인용 횟수 :
15 인용 특허 :
6 |
초록
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An image detector monitoring system includes a detector framing node and a host computer having at least one host processor and a host memory. The detector framing node acquires image data, buffers the acquired image data, and outputs the image data to the host memory according to a predetermined co
An image detector monitoring system includes a detector framing node and a host computer having at least one host processor and a host memory. The detector framing node acquires image data, buffers the acquired image data, and outputs the image data to the host memory according to a predetermined communication protocol. The host computer executes operations according to a non-real time operating system, and a host memory stores the image data received from the detector framing node. The detector framing node is controlled by executing a plurality of event instructions, which are stored in an event queue. Some event instructions control a radiation generation system, while others control communication with an image detection system or control the detector framing node itself. Each event instruction executed by the detector framing node includes a bit flag indicating whether the event is to be traced by the detector framing node. Traced events are stored as entries in a response log in host memory. Each response log entry includes a time stamp indicating a time of execution of the traced event.
대표청구항
▼
An image detector monitoring system includes a detector framing node and a host computer having at least one host processor and a host memory. The detector framing node acquires image data, buffers the acquired image data, and outputs the image data to the host memory according to a predetermined co
An image detector monitoring system includes a detector framing node and a host computer having at least one host processor and a host memory. The detector framing node acquires image data, buffers the acquired image data, and outputs the image data to the host memory according to a predetermined communication protocol. The host computer executes operations according to a non-real time operating system, and a host memory stores the image data received from the detector framing node. The detector framing node is controlled by executing a plurality of event instructions, which are stored in an event queue. Some event instructions control a radiation generation system, while others control communication with an image detection system or control the detector framing node itself. Each event instruction executed by the detector framing node includes a bit flag indicating whether the event is to be traced by the detector framing node. Traced events are stored as entries in a response log in host memory. Each response log entry includes a time stamp indicating a time of execution of the traced event. , 2Mx8, 1Mx16; Enhanced Memory Systems Inc., pp. 1-8. MD904 TO MD920, MoSys, Inc., 1996, pp. 1-16. Toshiba Integrated Circuit Technical Data; Sep. 2, 1996, 18 pgs. parallel with an optical path of said signal beam. 3. An optical information recording/reproducing system according to claim 1, wherein said reference beam irradiator irradiates said reference beam on the curved side surface of said holographic memory. 4. An optical information recording/reproducing system according to claim 3, wherein said support includes a shifter that shifts said holographic memory along said rotational symmetry axis of said holographic memory. 5. An optical information recording/reproducing system according to claim 3, wherein said support includes a rotator that rotates said holographic memory about said rotational symmetry axis of said holographic memory. 6. An optical information recording/reproducing system according to claim 3, wherein said support comprises: a shifter that shifts said holographic memory along said rotational symmetry axis of said holographic memory; and a rotator that rotates said holographic memory about said rotational symmetry axis. 7. An optical information recording/reproducing system according to claim 1, further comprising a gating beam irradiator that irradiates said holographic memory with a gating beam having a second wavelength for increasing photosensitivity of said holographic memory and causing one of activating and deactivating said refractive index grating depending on whether said optical interference pattern is present. 8. An optical information recording/reproducing system according to claim 7, wherein said gating beam irradiator irradiates said gating beam on the curved side surface of said holographic memory. 9. An optical information recording/reproducing system according to claim 8, wherein said gating beam irradiator applies said gating beam in a manner restricted to a limited area within said holographic memory, wherein said signal beam and said reference beam intersect with each other. 10. An optical information recording/reproducing system according to claim 1, further comprising a compensation lens having a curved surface complementary to said curved side surface of said holographic memory via which said reference beam and said gating beam enter said holographic memory and a plane surface on a side thereof opposite to said curved side surface, said compensation lens being arranged such that said complementary curved surface is spaced from said curved side surface of said holographic memory by a predetermined distance. 11. A holographic memory that records a three-dimensional distribution of interference fringes generated by interference between a reference beam and a signal beam modulated according to image data, wherein the holographic memory comprises: a photorefractive uniaxial crystal shaped into a rotary member having a rotational symmetry axis in parallel with an optical crystal axis of said uniaxial crystal; two plane surfaces perpendicular to said rotational symmetry axis formed at respective opposite ends thereof; and a curved side surface surrounding the rotational symmetry axis. 12. A holographic memory according to claim 11, wherein said shape of a rotary member is cylindrical. 13. A holographic memory according to claim 11, wherein said shape of a rotary member is a truncated cone. 14. An optical information recording system comprising: a holographic memory shaped into a rotary member having a rotational symmetry axis, the holographic memory comprising two plane surfaces perpendicular to the rotational symmetry axis at respective opposite ends thereof and a curved side surface surrounding the rotational symmetry axis; a reference beam irradiator that irradiates said holographic memory with a coherent reference beam having a first wavelength; a signal beam irradiator that irradiates said holographic memory with a coherent signal beam, which has said first wavelength, is modulated according to image data, passes through the two plane surfaces, and intersects with said reference beam within said holographic memory to generate a refractive index grating of a three-dimensional optical interference pattern between said signal beam and said reference beam; and a support that removably supports the holographic memory at edges of the plane surfaces and the curved side surface thereof without interrupting the reference beam and the signal beam, wherein said support holds said holographic memory in a position allowing said signal beam to pass through said plane surfaces of said holographic memory at said respective opposite ends thereof. 15. An optical information system, comprising: a holographic memory that rotates about a rotational axis, wherein the holographic memory comprises a first plane surface, a second plane surface, and a side surface, wherein the first plane surface and the second plane surface intersect the rotational axis and wherein the side surface is disposed between the first plane surface and the second plane surface; and an optical system that generates a reference beam and a signal beam and supplies the reference beam and signal beam at least indirectly to the holographic memory, wherein the reference beam and signal beam intersect within said holographic memory. 16. The system as claimed in claim 15, wherein the first plane surface and the second plane surface are substantially perpendicular to said rotational axis. 17. The system as claimed in claim 16, wherein the side surface is a curved surface that at least partially surrounds said rotational axis. 18. The system as claimed in claim 17, wherein said signal beam passes through said first plane surface and said second plane surface. 19. The system as claimed in claim 15, wherein the side surface is a curved surface that at least partially surrounds said rotational axis. 20. The system as claimed in claim 15, wherein said signal beam passes through at least one of said first plane surface and said second plane surface. 21. The system as claimed in claim 20, wherein said signal beam passes through said first plane surface and said second plane surface.
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