Image display device
AssigneeSharp Kabushiki Kaisha
InventorMasahiro Yoshimura
Life of this patent
Estimating the term…
Abstract
An image display device having unit image elements each arranged in a matrix formation and adapted to display a character signal synthesized with or superposed on an image signal further comprises means for matching the dot timing of the character signal and the scanning timing determined by the number of image elements of the image display device so that characters can be clearly displayed against a background image.
Claims8
An image display device including a dot matrix display device having a plurality of unit image elements arranged in a matrix formation adapted to receive an image signal, a character signal and a pulse signal and to selectively display one of said unit image elements between successive leading edges of said pulse signal in response to receiving said image signal and said character signal, comprising:
- signal generating means receiving said pulse signal and generating a sample-and-hold signal indicative of a leading edge of said pulse signal;
- sample-and-hold means for sampling and holding said character signal in response to said sample-and-hold signal and outputting a sampled character signal;
- and
- signal synthesizing means generating a display signal on the basis of said image signal and said sampled character signal and transmitting said display signal to said dot matrix display device.
An image display device including a dot matrix display device having a plurality of unit image elements arranged in a matrix formation adapted to receive an image signal, a character signal and a pulse signal and to selectively display one of said unit image elements between successive leading edges of said pulse signal in response to receiving said image signal and said character signal, comprising:
- signal generating means receiving said pulse signal and generating a sample-and-hold signal indicative of a leading edge of said pulse signal;
- signal synthesizing means for generating a display signal on the basis of said image signal and said character signal;
- and
- a sample-and-hold means for sampling and holding said display signal in response to said sample-and-hold signal and for transmitting the sampled display signal to said dot matrix display device.
Dependencies are inferred from the claim text.