Television – Synchronization – Control of picture position
Patent
1995-06-07
1997-09-30
Harvey, David E.
Television
Synchronization
Control of picture position
348569, 348601, 345157, H04N 5445
Patent
active
056730870
ABSTRACT:
A screen overlay device and method, and a television using the same are provided. The screen overlay device overlays a menu and cursor on a screen, and includes a pointing device wireless transmitter for transmitting an infrared (IR) signal corresponding to a key-input and the movement of a pointing device; an IR signal receiver/amplifier; a controller for calculating cursor coordinates corresponding to the movement of the pointing device in response to the amplified signal and outputting on-screen display (OSD) data related to the menu; an overlay unit for receiving the OSD data and cursor coordinates and generating a corresponding RGB signal in synchronization with horizontal and vertical sync signals; and an RGB synthesizer for synthesizing the RGB signal generated by the overlay using an external RGB signal in synchronization with the horizontal and vertical sync signals. The pointing device wireless transmitter includes a keypad; a trackball for converting movement of a ball into electric signals and outputting the result; a controller, connected to the keypad and trackball, which receives the electrical signal, converts the signal into predetermined data and outputs the result; and an IR transmitter, connected to the controller, which receives the predetermined data, converts the data into an IR signal and transmits the result. The screen displays all the operational controls of the system by employing an OSD function, without increasing the number of remote controller keys, so that users can select a displayed function in order to simplify control.
REFERENCES:
patent: 5051817 (1991-09-01), Takano
patent: 5452012 (1995-09-01), Saitoh
patent: 5532753 (1996-07-01), Buchner et al.
Choi Eun-suk
Kim Sang-gyun
Harvey David E.
Samsung Electronics Co,. Ltd.
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