Patent ID: 7389004

Claim:
A signal processing apparatus comprising: input means for inputting first image data having a first resolution; resolution converting means for converting the resolution of the first image data input by the input means and output second image data having a second resolution which is lower than the first resolution; character data producing means for producing first character data in accordance with the second resolution; enlargement means for enlarging the first character data output from the character data producing means to produce second character data in accordance with the first resolution; selected means for selecting one of the first character data produced by the character data producing means and the second character data output from the enlargement means; first multiplexing means for multiplexing the first image data input by the input means and the first or second character data selected by the selection means to produce first multiplex image data; and second multiplexing means for multiplexing the second image data output from the resolution converting means and the first character data output from the character data producing means to produce second multiplex image data.