Image display device and information processing apparatus arranged to convert an analog video signal into a digital video signal

An image display device arranged to receive analog video signals of plural colors and a synchronizing signal used for controlling display of said video signals and to display the corresponding image to said video signals, comprising:

• an analog-to-digital converting circuit which converts analog video signals of plural colors into digital video signals, respectively;
• a dot clock generating circuit which generates a dot clock serving as a conversion timing signal of said analog-to-digital converting circuit;
• an analog video signal varying circuit which adjusts a phase of said analog video signal of each color and supplies said phase-adjusted analog video signals to said analog-to-digital converting circuit;
• and
• wherein said image display device operates to display the image corresponding to the digital video signals outputted from said analog-to-digital converting circuit.

An image display device arranged to receive analog video signals of plural colors and a synchronizing signal for controlling display of said video signals and to display the corresponding image to said video signals, comprising:

• an analog-to-digital converting circuit which converts said analog video signals of plural colors into digital video signals, respectively;
• a dot clock generating circuit which generates a dot clock serving as a conversion timing signal of said analog-to-digital converting circuit;
• each color clock generating circuit which distributes said dot clock, generating each color dot clock, and supplies said each color dot clock to said analog-to-digital converting circuit of each color as a proper conversion timing signal;
• and
• wherein said image display device operates to receive the digital video signals outputted from said analog-to-digital converting circuit and display the corresponding image to said digital video signals.

An image display device arranged to receive analog video signals of plural colors and a synchronizing signal for controlling display of said video signals and display the corresponding image to said analog video signals, comprising:

• an analog video signal varying circuit which adjusts a phase of said analog video signal of each color;
• a display control circuit which receives analog video signals outputted from said analog varying circuit and said synchronizing signal and controls the display according to said synchronizing signal;
• and
• an image display unit which displays an image under the control of said display control circuit.

An information processing apparatus comprising:

• a memory which stores display data;
• a digital-to-analog converting circuit which converts said display data stored in said memory, for generating analog video signals of plural colors;
• a control circuit which outputs a synchronizing signal used for displaying said display data;
• one or more signal lines which convey said synchronizing signal and said analog video signals of plural colors;
• an analog-to-digital converting circuit which converts said analog video signals of plural colors received through said signal lines into digital video signals of plural colors, respectively;
• a dot clock generating circuit which is supplied with said synchronizing signal from said signal lines and generates a dot clock serving as a conversion timing signal of said analog-to-digital converting circuit;
• each color clock generating circuit which distributes said dot clock, generates each color dot clock, and supplies said each color dot clock to said analog-to-digital converting circuit for each color as its proper conversion timing signal;
• and
• an image display circuit which is supplied with the digital video signals outputted from said analog-to-digital converting circuit and displays the corresponding image to said digital video signals.

An information processing apparatus comprising:

• a memory which stores display data;
• a digital-to-analog converting circuit which converts said display data stored in said memory into analog video signals of plural colors;
• a control circuit which outputs a synchronizing signal used for displaying said display data;
• one or more signal lines which conveys said synchronizing signal and said analog video signals of plural colors;
• an analog video signal varying circuit which is supplied with said analog video signals of plural colors from said signal lines, adjusts a phase of said analog video signals of plural colors in respective colors, and outputs said phase-adjusted analog video signals;
• a dot clock generating circuit which is supplied with said synchronizing signal from said signal lines and generates a dot clock;
• an analog-to-digital converting circuit which converts said analog video signals of plural colors received from said analog video signal varying circuit into digital video signals in respective colors according to said dot clock, said dot clock serving as a conversion timing signal of said analog-to-digital converting circuit;
• and
• an image display circuit which is supplied with the digital video signals outputted from said analog-to-digital converting circuit and displays the corresponding image to said digital video signals.

An information processing apparatus comprising:

• a memory which stores display data;
• a digital-to-analog converting circuit which converts said display data stored in said memory into analog video signals of plural colors;
• a control circuit which outputs a synchronizing signal used for displaying said display data;
• one or more signal lines which conveys said synchronizing signal and said analog video signals of plural colors;
• an analog video signal varying circuit which adjusts a phase of said analog video signal of each color;
• a display control circuit which is supplied with analog video signals outputted from said analog video signal varying circuit and said synchronizing signal and controlling display according to said synchronizing signal;
• and
• an image display unit which displays an image under the control of said display control circuit.