Computer graphics processing and selective visual display system – Computer graphics processing – Attributes
Reexamination Certificate
1999-04-27
2002-04-23
Hjerpe, Richard (Department: 2674)
Computer graphics processing and selective visual display system
Computer graphics processing
Attributes
C345S215000, C345S213000
Reexamination Certificate
active
06377275
ABSTRACT:
BACKGROUND OF THE INVENTION
TECHNICAL FIELD
The present invention relates to a method and an apparatus for outputting an on-screen display (hereinafter, referred to as “OSD”), and more particularly, to a method and an apparatus for outputting an OSD of a display device, the method and apparatus being capable of preventing the display device from being damaged by the OSD which represents an operation state of the display device.
RELATED ART
In general, a display device (such as a monitor of a computer system) has an OSD function for displaying a state of the display device.
When the display device operates in an abnormal state (for example, a cable connector which connects the display device to an external system is disconnected) a controller of the display device displays a warning message, such as “check signal cable”, on a screen of the display device having an OSD function.
U.S. Pat. No. 5,670,972 (granted to Kim Young-Hee), entitled “SELF-DIAGNOSIS ARRANGEMENT FOR A VIDEO DISPLAY AND METHOD OF IMPLEMENTING THE SAME,” discloses the OSD function of the display device and a method for indicating an abnormal state of the display device.
However, in the prior OSD function of the display device described above, the OSD is fixedly displayed on a predetermined output position of the screen of the display device for a long time. Accordingly, in a case where the display device is a cathode-ray tube, luminous materials applied to a fluorescent screen of the cathode-ray tube damage the screen. Consequently, the life of the display device decreases.
Also, where the display device is a liquid crystal display, the liquid crystal display is damaged by a direct current voltage due to an electric charge accumulated in the liquid crystal display.
SUMMARY OF THE INVENTION
Therefore, it is an object of the present invention to provide a method for outputting an OSD of a display device, which is capable of preventing the display device from being damaged by the OSD.
It is another object of the present invention to provide an apparatus for outputting an OSD of a display device, the apparatus being capable of preventing the display device from being damaged by the OSD.
In order to achieve the above objects, the present invention provides a method for outputting an on-screen display of a display device, which comprises the steps of:
(i) outputting an on-screen display based on whether or not an on-screen display activation signal, which represents an abnormal state of a display device, is inputted;
(ii) changing an output position of the on-screen display based on whether or not an output time of the on-screen display in step (I) exceeds a predetermined reference time;
(iii) outputting the on-screen display to the output position changed in step (ii); and
(iv) returning to step (ii) or step (iii) based on whether or not the output time of the on-screen display in step (iii) exceeds the predetermined reference time.
In order to achieve the above objects, the present invention provides an apparatus for outputting an on-screen display of a display device, which comprises:
an on-screen display circuit section for outputting an on-screen display signal in response to an on-screen display output signal and an on-screen display output position changing signal, and for stopping the output of the on-screen display signal in response to an on-screen display erasing signal;
a video outputting section for outputting either a video screen or an on-screen display to the display device in response to a video signal from an external source or the on-screen display signal from said on-screen display circuit section; and
a control section for monitoring whether or not an on-screen display activation signal, which represents an abnormal state of the display device, is inputted from the outside, for supplying the on-screen display output signal to said on-screen display circuit section when the on-screen display activation signal is inputted, for counting an output time of the on-screen display outputted to the display device, for supplying the on-screen display output position changing signal in order to change an output position of the on-screen display to said on-screen display circuit section based on whether or not the output time of the on-screen display exceeds a predetermined reference time, for monitoring whether or not an on-screen display deactivation signal, which represents a normal state of the display device, is inputted from the outside, and for supplying the on-screen display erasing signal to said on-screen display circuit section when the on-screen display deactivation signal is inputted.
In order to achieve the above objects, the present invention provides a method for outputting an on-screen display of a display device, which comprises the steps of:
(a) outputting an on-screen display based on whether or not an on-screen display activation signal, which represents an abnormal state of a display device, is inputted; and
(b) erasing the on-screen display based on whether or not an output time of the on-screen display exceeds a predetermined reference time.
In order to achieve the above objects, the present invention provides an apparatus for outputting an on-screen display of a display device, which comprises:
an on-screen display circuit section for outputting or stopping an on-screen display signal in response to an on-screen display output signal or an on-screen display erasing signal;
a video outputting section for outputting either a video screen or an on-screen display to the display device in response to a video signal from an external source or the on-screen display signal from said on-screen display circuit section; and
a control section for monitoring whether or not an on-screen display activation signal which represents an abnormal state of the display device is inputted from an external source, for supplying the on-screen display output signal to said on-screen display circuit section when the on-screen display activation signal is inputted, for monitoring whether or not an on-screen display deactivation signal which represents a normal state of the display device is inputted from the external source, for supplying the on-screen display erasing signal to said on-screen display circuit section when the on-screen display deactivation signal is inputted, for counting an output time of the on-screen display outputted to the display device, and for supplying the on-screen display erasing signal in order to stop output of the on-screen display to said on-screen display circuit section based on whether or not the output time of the on-screen display exceeds a predetermined reference time.
In order to achieve the above objects, the present invention provides a method for outputting an on-screen display of a display device, which comprises the steps of:
(A) outputting an on-screen display based on whether or not an on-screen display activation signal which represents an abnormal state of a display device is inputted;
(B) erasing temporarily the on-screen display based on whether an output time of the on-screen display in step (A) exceeds a predetermined first reference time;
(C) changing an output position of the on-screen display based on whether or not an erasing time of the on-screen display in step (B) exceeds a predetermined second reference time;
(D) outputting the on-screen display to the output position changed in step (C); and
(E) returning to step (C) or step (D) based on whether or not an output time of the on-screen display in step (D) exceeds a predetermined third reference time
In order to achieve the above objects, the present invention provides an apparatus for outputting an on-screen display of a display device, which comprises:
an on-screen display circuit section for outputting an on-screen display signal in response to an on-screen display output signal and an on-screen output position changing signal, for stopping temporarily the output of the on-screen display signal in response to an on-screen display temporarily-erasing signal, and for stopping the output of the on-scree
Bushnell , Esq. Robert E.
Eisen Alexander
Hjerpe Richard
Samsung Electronics Co,. Ltd.
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