Color image processing apparatus and method
AssigneeCanon Kabushiki Kaisha
InventorsNao Nagashima, Yasumichi Suzuki, Mitsuru Kurita
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Abstract
An image processing system includes an image processing apparatus having an encrypting circuit for reading an image of an original, converting the read image into an image signal, and encrypting the image signal by using data concerning encryption, a transmitting unit for transmitting the encrypted image signal to another image processing apparatus, and an image processing apparatus for receiving the encrypted, transmitted image signal and decrypting the signal by using the data concerning encryption.
Claims14
An image processing apparatus comprising:
- a memory for storing received color data which has been encrypted;
- a decryption circuit for decrypting the color data stored in the memory;
- a modification circuit for modifying the color data decrypted by the decryption circuit;
- and
- a synthesis circuit for synthesizing the color data modified by the modification circuit with information readable to a machine but unreadable to a human, when an image corresponding to the color data is printed to a recording medium by a color printer.
An image processing method comprising the steps of:
- reading encrypted color data of a memory;
- decrypting the encrypted color data;
- modifying the color data decrypted in the decrypting step;
- and
- synthesizing the color data modified in the modifying step with information readable to a machine but unreadable to a human, when an image corresponding to the color data is printed to a recording medium by a color printer.
Dependencies are inferred from the claim text.