On screen display (OSD)
AssigneePace Micro Technologies, Plc
InventorChristopher Medcalf
Life of this patent
Estimating the term…
Abstract
The invention relates to the generation of an on-screen display and a control system for the same which allows the known problems in display which can occur to be avoided. Upon change of at least part of an OSD, the system continues until a request to redraw the display is received. At this stage, if the Vsync signal of the display screen has occurred since the change the redraw occurs immediately, thereby avoiding unnecessary delay.
Claims9
A system for the control of the generation of an on-screen display on a display screen, said system comprising:
- control means for the display which continue to operate the system upon movement of an area of a first on-screen display or deletion of a region of a first on-screen display, until a request to draw into a data buffer memory of the display or to create a new region on the display is received respectively, whereupon the control means detects whether or not a vertical synchronization signal for the display screen has occurred in an interim period since the movement of the area or deletion of the region of the first display and if the vertical synchronization signal has occurred in the interim period said drawing into the data buffer memory or creation of the new region with regard to the on-screen display occurs immediately.
A system for the control of the generation of an on-screen display on a display screen, said system comprising:
- a control means for the on-screen display which continues to operate the system upon movement of an area of a first on-screen display or deletion of a region of the first on-screen display until a request to draw into a data buffer memory of the display or create a new region on the display is received respectively whereupon the control means detects whether or not a vertical synchronization signal for the display screen has occurred in an interim period since the change to the area of the first display and said system continues when part of the first display is moved until a request to draw into its display buffer memory is received.
A system for the control of the generation of an on-screen display on a display screen, said system comprising;
- a control means for the on-screen display which continues to operate the system upon movement of an area of a first on-screen display or deletion of a region of the first on-screen display until a request to draw into a data buffer memory of the display or create a new region on the display is received respectively whereupon the control means detects whether or not a vertical synchronization signal for the display screen has occurred in an interim period since the change to the area of the first display and the system continues in operation until a request to create a new region is made when a region of the first on-screen display is deleted.
Dependencies are inferred from the claim text.