Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Digital versatile disc playback system with efficient modification of subpicture data










Image Number 6 for United States Patent #6313850.

In a display system having a predefined number, n, of pixel types, a display processor, such as a digital versatile disc (DVD) display processor, includes a color palette which can store more than n color/contrast values and a subpicture bitmap composed of subpicture pixel values, each of which corresponds to one of the n pixel types. In a DVD display system, for example, the DVD subpicture pixel types are: Background, Pattern, Emphasis 1, and Emphasis 2. Each subpicture pixel value is, in turn, related to a color/contrast combination by the color palette, with each pixel value corresponding to the address of a palette location. The corresponding palette location contains the color/contrast value for the related subpicture pixel type. To modify the color/contrast value of a selected group of the pixels having one of the four DVD subpicture pixel types, the display processor updates the color palette, associating new color/contrast values with previously "unused" palette locations. Additionally, pixel values within the bitmap locations which are to have their color/contrast values changed are modified to correspond to the address of the color palette location containing the "new" color/contrast value. The display processor sends the updated color palette and bitmap to a video processor which combines the color palette information, bitmap information and video information to create a subpicture display which reflects the updated color/contrast values.








 
 
  Recently Added Patents
Automatically selecting a paper with increased dimensions than originally desired for printing and adding advertisement content to the increased dimensional area of the paper
Plural component proportioner
Sign language keyboard and sign language searching apparatus using the same
Thermoplastic resin composition
Liposomal nanoparticles and other formulations of fenretinide for use in therapy and drug delivery
Creating and manufacturing documents that initially exceed equipment finishing capacity
Automated solar collector installation design including ability to define heterogeneous design preferences
  Randomly Featured Patents
Semiconductor storage device and control method thereof
Configurable gun cleaning kit case
Programmable electronic time lock
Method of fabricating lateral power MOSFET having metal strap layer to reduce distributed resistance
Methods for detecting an endotoxin with a lysate reagent
Ultrasonic load indicating member
Vending machine with transponder interrogator
Mail box
Method for compensating for void-defects in images
Cellulose production by facultatively anaerobic microorganisms