Multilayer control of gobo shape

• US 20050207163A1
• Filed: 05/13/2005
• Published: 09/22/2005
• Est. Priority Date: 09/22/1999
• Status: Active Grant

• Current Assignee: Production Resource Group LLC
• Original Assignee: Production Resource Group LLC
• Inventors: Hunt, Mark A.
• Granted Patent: US 7,511,724 B2
• Time in Patent Office: Days
• US Class Current: 362/296.10
• CPC Class Codes: F21V 11/18 movable, e.g. flaps, slides
• CPC Class Codes: F21W 2131/406 for theatres, stages or film studios
• CPC Class Codes: G09G 2340/0428 Gradation resolution change
• CPC Class Codes: G09G 3/346 based on modulation of the reflection angle, e.g. micromirrors micromirrors devices per se G02B26/0833
• CPC Class Codes: G09G 5/02 characterised by the way in which colour is displayed details of colour display specific for CRTs G09G1/28; specific for flat matrix panels other than liquid crystal displays G09G3/2003; specific for liquid crystal displays G09G3/3607

Abstract

A control of gobos defend by records in the gobo. The gobos are formed by menued shapes.

Claims

1. A method comprising:

defining an image as specified numbers of bits of primary colors;

translating the image from a bit-based form which defines in terms of its primary colors, into chrominance and its luminance values indicative thereof;

dimming the image by reducing the luminance value while maintaining constant chrominance; and

reconverting the chrominance and luminance back into said bit based form.

2. A method as in claim 1, further comprising using a digitally controllable pixel level device in the path of a light beam, and controlling said digitally controllable pixel level device using said bit-based form.

3. A method as in claim 2, wherein said digitally controllable device is a digital mirror device.

4. A method as in claim 1, further comprising apportioning said chrominance as bits between a total allotted number of bits.

5. A method as in claim 4, wherein there are a total allotted number of 8 bits, and wherein two of the primary colors get three bits and the other of the primary color gets two bits for its chrominance.

6. A method as in claim 4, further comprising assigning adjacent lines the same color values, and providing additional resolution of said color values by combining said color values.

7. A method as in claim 6, further comprising modifying said image to maintain byte boundaries.

8. A method as in claim 1, further comprising combining multiple images together to provide twice as many available bits for the combined lines.

9. A method as in claim 1, further comprising dimming the image by multiplying each of the luminances associated with each of the chrominances by a specified value.