Character information display apparatus

Claim 2

A character information display apparatus comprising: first generator means for generating a first video signal for a full-screen image including character information; second generator means for generating a second video signal for a partial-screen image including character information; change-over means for changing the first video signal for the full-screen image from the first generator means and the second video signal for the partial-screen image from the second generator means with each other; demodulation means for demodulating the character information extracted from the first video signal for the full-screen image or the second video signal for the partial-screen image output from the change-over means; partial-screen image processing means for compressing the second video signal for the partial-screen image from the second generator means in the horizontal direction and/or the vertical direction; first compositing means for compositing the first video signal for the full-screen image from the first generator means and the compressed video signal for the partial-screen image from the partial-screen image processing means; second compositing means for compositing signals from the first composite image and a character signal from the demodulation means; display means for displaying signals from the second compositing means, controller means provided with a first key for turning ON or OFF the display of the partial-screen image and a second key for turning ON or OFF the display of the character information; control processor means for controlling the second generate means, the change-over means and the demodulation means under the control of the controller means, and further it turns ON or OFF the display of the character information correspond to the full-screen image whenever the second key is pressed when the first key is OFF and the partial-screen image is not displayed, and it operates a cyclic operation, turning ON the display of the character information correspond to the full-screen image, the display of the character information correspond to the partial-screen image and turning OFF the display of the character information whenever the second key is pressed when the first key is ON and the partial-screen image is not displayed.

Claim 3

A character information display apparatus comprising: first generator means for generating a first video signal fora full-screen image including a character information; second generator means for generating a second video signal for a partial-screen image including a character information; change-over means for changing the first video signal for the full-screen image from the first generator means and the second video signal for the partial-screen image from the second generator means with each other; demodulation means for demodulating the character information by extracted from the first video signal for the full-screen image or the second video signal for the partial-screen image output from the change-over means; partial-screen image processing means for compressing the partial-screen image video signal from the second generator means in horizontal or vertical direction; first compositing means for compositing the first video signal the for full-screen image from the first generator means and the compressed video signal for partial-screen image from the partial-screen image processing means; second compositing means for compositing signals from the first composite image and a character signal from the demodulation means; display means for displaying signals from the second compositing means; controller means provided with a first key for turning ON or OFF the partial-screen image display, a second key for turning ON or OFF the display of the character information, and a third key for turning ON or OFF the mute of sound; and control processor means for controlling the first and the second generator means under the control of the controller means, the change-over means, and the demodulation means and further it turns ON or OFF the display of the character information correspond to a full-screen image whenever the second key is pressed when the first key is OFF and a partial-screen image is not displayed, it is caused a cyclic operation as follows; turning ON the display of the character information correspond to the full-screen image, the display of the character information correspond to the partial-screen image and turning OFF the display of the character information whenever the second key is pressed when the first key is ON and the partial-screen image is not displayed, on the other hand, it turns ON or OFF the character information correspond to a full-screen image at the same time it turns the mute of sound ON or OFF whenever the third key is pressed.

Claim 4

A character information display apparatus as claimed in any one of the claims 1, 2 and 3, wherein the character information includes a closed-caption signal.