Programmable display timing generator
AssigneeTexas Instruments Incorporated
InventorsMark Weaver, Bart Decanne
Life of this patent
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Abstract
A display timing generator is provided for selecting line types and providing synchronization timing signals for video signals. The display timing generator provides programmability for the user to select line types for a frame to be displayed on a display. The line types defining rise and fall times, synchronization shapes, blanking levels and horizontal and vertical timings for providing a desired display format to different display types. A plurality of programmable parameters for pulse width, horizontal timing and voltage amplitude allow a user to define timing variations associated with a given line type. The display timing generator also includes a generic mode for allowing a programmer to select line types for particular groupings of lines.
Claims29
A display timing generator for generating timing associated with component video signals in a desired display format, the display timing generator comprising:
- a programming interface operative to allow a user to select line types for different lines in a frame and one or more timing parameters associated with a corresponding line type;
- and
- a signal generator operative to receive digital video data and provide the selected line types and timing associated with the selected one or more timing parameters for the different lines in a frame, the selected line types and timing associated with the selected one or more timing parameters being insertable into digital component video signals to provide a desired display format.
A video system comprising:
- a video source that provides digital video data;
- a display timing generator having a plurality of stored line types corresponding to different timing formats of a line, the line types being selectable by a user to provide component video signals with appropriate timing signals to provide a desired display format, the different timing formats having a plurality of timing parameters that are programmable;
- and
- a digital-to-analog system that inserts the selected timing of the line types into the digital video data and then converts the digital video data into analog component video signals.
A method for programming a display timing generator that provides timing associated with digital component video, the method comprising:
- programming line types for lines to be displayed in a frame;
- programming horizontal timing and voltage levels for the line types;
- and
- programming horizontal timings and voltage levels for synchronization signals associated with the line types.
A method for providing timing associated with digital component video, the method comprising:
- storing a set of line types and timing parameters associated with the line types;
- providing a display timing generator with a programming interface, the programming interface being adapted to allow a user to select between the set of line types and associated timing parameters;
- and
- creating a line type table that provides the display timing generator with the selected line types and associated timing parameters when receiving component video data, so that the display timing generator can provide the selected line types and associated timing parameters to the component video data.
A display timing generator for generating timing associated with component video signals in a desired display format, the display timing generator comprising:
- means for providing the selectability of line types for different lines in a frame and programmability of one or more timing parameters associated with a corresponding line type;
- means for storing the selected line types and the one or more programmed timing parameters;
- and
- means for generating the timing signals for digital component video signals based on the selected line types and one or more programmed timing parameters.
Dependencies are inferred from the claim text.