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
Requirements model comparative analysis method for effort estimation in customizing a network monitoring and control system
System, method, and computer program product for identifying unwanted data communicated via a session initiation protocol
Display screen with an animated graphical user interface
Detection of code-based malware
Data encoding and decoding apparatus and method thereof for verifying data integrity
Method and apparatus for modeling computer program behaviour for behavioural detection of malicious program
System and method for detecting executable machine instructions in a data stream
  Randomly Featured Patents
Method, apparatus and system for image stabilization using a single pixel array
Secure device introduction with capabilities assessment
Pump inking unit
Artificial flowers and method for their manufacture, unistem
Air-detrainer for hydraulic cement compositions
10-substituted 1,8-dihydroxy-9(10H) anthracenone pharmaceuticals
Electromagnetic pump
Battery charger with internal battery
Ensuring the accurateness and currentness of information provided by the submitter of an electronic invoice throughout the life of a matter
Process for treating sulphate-containing waste water