Image controlling circuit, image controlling method, and computer readable medium, wherein programs to execute the image controlling method on a computer system are stored
AssigneeFujitsu Limited
InventorKazunori Takahashi
Life of this patent
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Abstract
An information processing apparatus prevents from illegal copying analogue pictures with copy guard, providing the image controlling circuit and the method. When the copy guard signal is detected, the screen information is processed and stored, is prevented from being stored, or both the screen information and what the copy guard signal has been detected is stored to the storage device. The input video signal or the screen information recorded in a storage device is processed and outputted, outputting the video signal is prohibited, or a copy guard signal is added to the output video signal, when it is copyrighted.
Claims9
An image processing apparatus, comprising:
- a storage device recording screen information of picture information;
- and
- an image controlling circuit controlling input and output of picture information, comprising:
- a copy guard detecting circuit detecting a copy guard signal, indicating a copying prohibition, included in an input video signal of picture information,
- a video decoding circuit digitizing the input video signal, and
- an image processing circuit reducing screen information digitized by said video decoding circuit, to deteriorate an image quality, and storing the reduced screen information to said storage device, in a case where said copy guard detecting circuit detects the copy guard signal,
- wherein screen information includes a first part and a second part and the stored reduced screen information includes only the first part.
A method for controlling image information, comprising:
- detecting a copy guard signal, indicating a copying prohibition, included in an input video signal;
- digitizing the input video signal;
- reducing the digitized screen information, to deteriorate an image quality, in a case where the copy guard signal has been detected;
- and
- storing the reduced screen information,
- wherein screen information includes a first part and a second part and the stored reduced screen information includes only the first part.
A computer readable storage storing a computer-readable program which controls a computer system to execute an image controlling process, by:
- detecting a copy guard signal, indicating a copying prohibition, included in an input video signal;
- and
- reducing screen information to deteriorate an image quality, digitized out of the input video signal, in a case where the copy guard signal is detected;
- storing reduced screen information,
- wherein screen information includes a first part and a second part and the stored reduced screen information includes only the first part.
Dependencies are inferred from the claim text.