Apparatus for simultaneously displaying TV and PC images
AssigneeLG Electronics Inc.
InventorKwan-Seung Baek
Life of this patent
Estimating the term…
Abstract
An apparatus for simultaneously displaying TV and PC images capable of displaying a single image selected between PC and decoded TV images in a picture tube, or alternately displaying the PC and decoded TV images for a cycle of a horizontal synchronous signal, thereby displaying the TV image and the PC image of a high resolution as a double screen.
Claims14
In a display apparatus for displaying a double screen image, an apparatus for simultaneously displaying TV and PC (personal computer) images, comprising:
- a double screen control unit to receive main TV image and sub TV image signals, and to generate a double screen image signal from the main TV image and sub TV image signals;
- a PC signal process unit to generate a PC image signal and to generate a synthetic synchronous signal in accordance with PC synchronous signals;
- a switch control unit to generate a selection signal which selects one of the double screen image and another image, in accordance with the synthetic synchronous signal;
- and
- a switch unit to select a single synchronous signal between the PC synchronous signals and TV synchronous signals, and to select a single image signal among the PC image signal, the main TV image signal, and the double screen image signal based on the selection signal.
In a display apparatus for displaying a double screen image, an apparatus for simultaneously displaying TV and PC images, comprising:
- a double screen control unit to receive main TV image and sub TV image signals, and to generate a double screen image signal from the main TV image and sub TV image signals;
- a PC signal process unit to generate a PC image signal and to generate a synthetic synchronous signal in accordance with PC synchronous signals;
- a switch control unit to generate a selection signal which selects one of the double screen image and another image, in accordance with the synthetic synchronous signal;
- and
- a switch unit to select a single synchronous signal between the PC synchronous signals and TV synchronous signals, and to select a single image signal among the PC image signal, the main TV image signal, and the double screen image signal based on the selection signal, wherein the switch control unit comprises:
- a multivibrator to receive a double screen selection signal from the double screen control unit and to output a signal which alternately has low and high levels in accordance with a time constant of the circuit;
- and
- a selection signal control unit to output the signal outputted from the multivibrator in accordance with an output signal from a converting terminal of the multivibrator and a control signal of the microcomputer.
A display apparatus for simultaneously displaying TV and PC images, comprising:
- a PC signal processing unit to output a synchronous PC signal and to output a PC image signal;
- a double screen control unit to output a double screen selection signal synchronized with the synchronous PC signal and to output a double screen TV image signal;
- a switch control unit to generate a switching signal based on the double screen selection signal;
- and
- a switching unit to switch between the PC image signal and the double screen TV image signal in response to the switching signal.
A display apparatus for selectively displaying TV and PC images, comprising:
- a PC signal processing unit to output a PC image signal;
- a main screen decoder to output a main screen TV image signal;
- a double screen control unit to output a double screen selection signal and to output a double screen TV image signal;
- a microprocessor to generate a control signal based on user input;
- a switch control unit to generate a switching signal based on the double screen selection signal and the control signal;
- and
- a switching unit to output one of the PC image signal, the main screen TV image signal, the double screen TV image signal, and a combination of the double screen TV image signal and the PC image signal in response to the switching signal and the control signal.
Dependencies are inferred from the claim text.