Peter C Castro

US Patent:

56508131, Jul 22, 1997

Filed:

Dec 21, 1994

Appl. No.:

8/360309

Inventors:

David L. Gilblom - Los Altos CA
Peter S. Castro - Los Altos CA

Assignee:

Picker International, Inc. - Highland Heights OH

International Classification:

H04N 718
H04N 5232

US Classification:

348 36

Abstract:

One or more time delay and integration camera assemblies (A) are mounted in a housing (100) which is rotated by a motor (40, 106) relative to a vertical axis. A tachometer or encoder (44) produces signals whose frequency or voltage varies in accordance with an angular velocity of the camera assemblies about the vertical axis. A clock generator (46) converts the angular velocity signals into clocking signals for controlling movement of vertical lines of data values (20) along an array (14) of light sensitive elements to a shift register (22). In one embodiment, the clock generator includes a divider (82) which converts the angular velocity signal into a voltage, a comparator (84) which compares the first voltage with a second voltage, and a voltage controlled oscillator (88) which oscillates to generate the clocking signal. A second divider (88) defines a feedback loop between the output of the voltage controlled oscillator and the comparator for generating the second voltage. Each line of data from the array update (64) a corresponding line of a panoramic memory (66).

US Patent:

54283922, Jun 27, 1995

Filed:

May 10, 1993

Appl. No.:

8/059647

Inventors:

Peter S. Castro - Los Altos CA

Assignee:

Picker International, Inc. - Highland Heights OH

International Classification:

H04N 718
H04N 910

US Classification:

348295

Abstract:

A time-delay and integration camera assembly (A) is mounted to view a rotating or other cyclically moving object (B). A lens (30) focuses light from a field of view (10) onto an array (32) of light sensitive elements having N lines of elements. A tachometer (50) monitors rotation of the rotating object and a timing control (54) causes a light sensitive array control (34) to start stepping lines of data along the lines of light sensitive elements toward a shift register (36) as a leading edge (20) of a region of interest (12) enters the field of view. Each time the region of interest moves 1/Nth of the way across the field of view, the lines of data are stepped another time along the lines of light sensitive elements. Digital video signals are sorted (74) among a plurality of image memories (76. sub. 1, 76. sub. 2,. . . , 76. sub. M) each image memory corresponding to a corresponding region of interest (12. sub. 1, 12. sub. 2,. . . , 12. sub. M).

US Patent:

57478252, May 5, 1998

Filed:

Nov 20, 1992

Appl. No.:

7/979199

Inventors:

David L. Gilblom - Los Altos CA
Peter S. Castro - Los Altos CA

Assignee:

Picker International, Inc. - Highland Heights OH

International Classification:

G01N 2304

US Classification:

250586

Abstract:

A latent image is formed on a stimulable phosphor plate (10) by irradiating the phosphor plate with x-rays from an x-ray source (14). To develop the stimulable phosphor plate, the plate is irradiated with light of a different wavelength from developer light source (32). The light from the developer light source causes the stimulable phosphor plate to give off light of yet another characteristic wavelength. Light from the stimulable phosphor plate is filtered (38) to remove the wavelength of the developer light and focused (42) on a light sensing element (46) of a time delay and integration video camera (34). The stimulable phosphor plate and the video camera are moved relative to each other and the rate of movement is monitored (60). An array control (50) shifts rows of data or charge values along the light sensing element in coordination with movement of the stimulable phosphor plate such that the light emitted by each incremental element of the stimulable phosphor plate is integrated over a full column of detector elements of the light detector array. The time delay and integration video camera produces a video signal indicative of the latent x-ray shadowgraphic image from the stimulable phosphor plate.

Author:

Peter Castro

ISBN #:

0070121974

Author:

Peter Castro

ISBN #:

0070294216

Author:

Peter Castro

ISBN #:

0072509341

Author:

Peter Castro

ISBN #:

0072852909

Author:

Peter Castro

ISBN #:

0072933569

Author:

Peter Castro

ISBN #:

0072937254

Author:

Peter Castro

ISBN #:

0073258385

Author:

Peter Castro

ISBN #:

0801603625