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
Mesa-shaped piezoelectric resonator element
Charge domain filter and method thereof
Pattern identification apparatus, control method and program thereof
Method and systems for detecting duplicate travel path
Automatic detection of image degradation in enhanced vision systems
Switched capacitor amplifier
Photon density wave based determination of physiological blood parameters
  Randomly Featured Patents
Device for programmable thick film networks
Conveyor belt with built-in magnetic-motor linear drive
Materials and method for preventing high temperature seize between metal parts
Making molds for continuous casting
1,5-Benzothiazepines and their use as hypolipidaemics
Shoe-attached brush system for cleaning golf clubs
Structure for installing an automotive battery
Heat sink and electronic apparatus using the same
Electric vehicle drive apparatus
Fused aromatic oxazepinones, thiazepinones, diazepinones and sulfur analogs thereof