Illumination signal processing system

• US 4,614,415 A
• Filed: 02/02/1978
• Issued: 09/30/1986
• Est. Priority Date: 06/04/1973
• Status: Expired due to Term

• Current Assignee: Gilbert P. Hyatt
• Original Assignee: Gilbert P. Hyatt
• Inventors: Hyatt, Gilbert P.
• Primary Examiner(s): Perkey, William B.
• Application Number:
  US05/874,445
• Time in Patent Office: 3,162 Days
• Field of Search: 237/1 A, 126/270, 126/271, 165/48, 165/49, 165/53, 165/DIG. 15, 350/DIG. 1, 350/330-333, 350/349, 350/345, 350/351, 350/352, 350/331 T, 350/3.6, 354/227, 354/230, 355/68-70, 340/700, 340/701, 340/749, 340/366 B, 340/380, 340/713, 340/703, 340/765, 340/767, 340/794, 358/2, 353/122, 250/205, 250/209, 250/215, 250/213 A, 352/34, 352/354, 362/272, 362/276
• US Class Current: 345/84
• CPC Class Codes: B60R 16/0373 Voice control in general G10L
• CPC Class Codes: F21V 23/00 Arrangement of electric circuit elements in or on lighting devices characterised by cooling arrangements F21V29/508
• CPC Class Codes: G01S 15/897 using application of holographic techniques
• CPC Class Codes: G01S 15/8977 using special techniques for image reconstruction, e.g. FFT, geometrical transformations, spatial deconvolution, time deconvolution
• CPC Class Codes: G01S 7/52026 Extracting wanted echo signals Doppler systems G01S15/50; Doppler short range imaging systems G01S15/8979
• CPC Class Codes: G02F 1/0121 Operation of devices; Circuit arrangements, not otherwise provided for in this subclass
• CPC Class Codes: G02F 1/13318 Circuits comprising a photodetector
• CPC Class Codes: G03F 9/7049 Technique, e.g. interferometric
• CPC Class Codes: G03F 9/7088 Alignment mark detection, e.g. TTR, TTL, off-axis detection, array detector, video detection
• CPC Class Codes: G04G 99/006 Electronic time-pieces using a microcomputer, e.g. for multi-function clocks
• CPC Class Codes: G05B 19/351 the positional error is used to control continuously the servomotor according to its magnitude
• CPC Class Codes: G05B 19/408 characterised by data handling or data format, e.g. reading, buffering or conversion of data
• CPC Class Codes: G05B 19/4083 Adapting programme, configuration
• CPC Class Codes: G05B 19/4086 Coordinate conversions; Other special calculations
• CPC Class Codes: G05B 19/409 characterised by using manual data input [MDI] or by using control panel, e.g. controlling functions with the panel; characterised by control panel details or by setting parameters G05B19/408, G05B19/4093 take precedence
• CPC Class Codes: G05B 19/4093 characterised by part programming, e.g. entry of geometrical information as taken from a technical drawing, combining this with machining and material information to obtain control information, named part programme, for the NC machine
• CPC Class Codes: G05B 19/414 Structure of the control system, e.g. common controller or multiprocessor systems, interface to servo, programmable interface controller
• CPC Class Codes: G05B 19/4142 characterised by the use of a microprocessor G05B19/4141 takes precedence
• CPC Class Codes: G06F 13/16 for access to memory bus G06F13/28 takes precedence
• CPC Class Codes: G06J 1/00 Hybrid computing arrangements digitally-programmed analogue computers G06G7/06
• CPC Class Codes: G07G 1/12 : electronically operated digital data processing aspects G06Q20/00
• CPC Class Codes: G10L 19/00 : Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis in musical instruments G10H
• CPC Class Codes: G11C 11/565 : using capacitive charge storage elements
• CPC Class Codes: G11C 19/287 : Organisation of a multiplicity of shift registers
• CPC Class Codes: G11C 19/36 : using multistable semiconductor elements
• CPC Class Codes: G11C 27/00 : Electric analogue stores, e.g. for storing instantaneous values
• CPC Class Codes: G11C 27/04 : Shift registers

Abstract

Control of illumination with illumination amplifier devices provides a basis for implementing various types of illumination systems. Also illumination amplifiers in closed illumination servo loops provide improved illumination control. An illumination control system provides precise control of camera operations for photographic and photoplotter applications. Illumination amplifier devices are used in conjunction with electronic control circuits to provide flexibility and precision in camera systems, reducing reliance on prior art mechanical devices.

Illumination control circuits are presented in the form of digital gates and flip-flops and in the form of analog computational elements to provide illumination computer systems. In addition, a batch fabricated illumination computer arrangement is presented for improved implementation of illumination control systems.

Illumination amplifiers are further configured for control of illumination in buildings and automobiles. Various types of devices such as windows, shutters, shades and visors are configured with illumination amplifiers to provide electronic control of illumination.

Batch fabricated display arrangements are provided having an illumination source integral with an illumination amplifier for low cost, small volume, and flexibility. Also, colored display arrangements are provided for control of colors with illumination amplifier devices.

Claims

1. A colored display system comprising:

a coherent illumination source for generating coherent illumination;

electrical control means for generating an electrical control signal;

an illumination amplifier for generating controlled colored illumination in response to the coherent illumination from said coherent illumination source under control of the electrical control signal from said electrical control means;

projection means for generating projection colored illumination in response to the controlled colored illumination from said illumination amplifier;

a screen for generating a projected colored display in response to the projected colored illumination from said projection means; and

heat transfer means for cooling said illumination amplifier.

2. The system as set forth in claim 1 above, wherein said illumination amplifier includes reflective means for generating the controlled illumination in response to controlled reflection of said coherent illumination.

3. The system as set forth in claim 2 above, further comprising optical fiber means for conducting the controlled illumination from said illumination amplifier.

4. A color display system comprising:

a high intensity illumination source for generating high intensity illumination;

an illumination amplifier for generating high intensity controlled illumination in response to the high intensity illumination from said illumination source, wherein said illumination amplifier includes reflection means for performing the controlling of illumination with controlled reflectivity and wherein said illumination amplifier includes color means for generating the controlled reflected illumination as controlled colored reflected illumination;

projection means for generating projected colored illumination in response to the controlled colored reflected illumination;

means for generating a large screen colored display in response to the projected colored illumination; and

heat transfer means for removing heat from said illumination amplifier in response to the generating of high intensity controlled illumination with said illumination amplifier.

5. A colored projection display system comprising:

a luminescent source for generating luminescent source illumination;

pulse width modulated control means for generating an electrical pulse width modulated control signal;

an electro-optical device having controllable reflectivity for generating a reflected multicolored illumination image in response to the luminescent source illumination from said luminescent source under control of the pulse width modulated electrical control signal from said control means; and

projection means for generating a colored projected image in response to the reflected multi-colored illumination image from said illumination amplifier means.

6. The system as set forth in claim 5 above, wherein said control means includes a stored program computer for generating the control signal under control of a stored program, wherein said electro-optical device includes means for generating the illumination image in response to the control signal from said stored program computer.

7. The system as set forth in claim 5 above, wherein said electro-optical device includes means for generating the illumination image having a controlled intensity in response to the pulse modulated signal.

8. The system as set forth in claim 5 above, wherein said pulse width modulated control means includes means for generating the pulse width modulated control signal as a multi-channel pulse width modulated control signal.

9. The system as set forth in claim 5 above, wherein said source includes coherent means for generating the source illumination as coherent source illumination.

10. The system as set forth in claim 5 above, wherein said electro-optical device includes a liquid crystal device for generating the illumination image in response to the source illumination.

11. The system as set forth in claim 5 above, wherein said projection means includes a lens for generating the projected image in response to the illumination image.

12. The system as set forth in claim 5 above, wherein said projection means includes magnification means for generating the projected image as a magnified image in response to the illumination image, wherein the projected image is larger than the illumination image.

13. The system as set forth in claim 5 above, wherein said projection means includes reduction means for generating the projected image as a reduced image in response to the illumination image, wherein the projected image is smaller than the illumination image.

14. The system as set forth in claim 5 above, further comprising a screen for providing a screen image in response to the projected image from said projection means.

15. The system as set forth in claim 5 above, further comprising feedback means for generating a feedback signal in response to sensed illumination, wherein said source means includes means for generating the source illumination in response to the feedback signal.

16. The system as set forth in claim 5 above, further comprising an audience display for displaying an image to an audience in response to the projected image.