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MMX optimized data packing methodology for zero run length and variable length entropy encoding |
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Efficient algorithm and architecture for image scaling using discrete wavelet transforms |
| OF THE INVENTION The exemplary embodiments described herein are provided merely to illustrate the ... |
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Image compression using directional predictive coding of the wavelet coefficients |
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DWT-based up-sampling algorithm suitable for image display in an LCD panel |
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Block mapping based up-sampling method and apparatus for converting color images |
| The present invention provides a system for a block mapping based up-sampling process to up-sample ... |
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Efficient memory mapping of a huffman coded list suitable for bit-serial decoding |
| OF THE INVENTION Referring to the figures, exemplary embodiments of the invention will now be ... |
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Scaling algorithm and architecture for integer scaling in video |
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Image forming apparatus with selectable automatic document size or copy paper size priority modes
| Details |
Inventors: Mizude, Kazuhiro; Matsuda, Hirofumi; Yamamoto, Haruo; Tone, Eiichi;
Assignee: Mita Industrial Co., Ltd. (Osaka, JP)
Primary Examiner: Fuller; Benjamin R.
Assistant Examiner: Rogers; Scott A.
Attorney, Agent or Firm: Jordan and Hamburg
An image forming apparatus includes a document size detection device, a copy paper feeder carrying a plurality of copy paper sheets having different sizes, a copying device for copying an image of the document onto the fed copy paper sheet, the copying means having a copy magnification changer, a copy paper size selector for selecting a desired copy paper size from the plurality of copy paper sizes, a copy magnification setting device for setting a desired copy magnification, a copy mode selection device for selecting either a manual mode or an automatic mode, and a controller for controlling the copy paper feeder and the copy magnification changer so as to execute the manual mode, the automatic mode. The automatic mode has an automatic document size priority sub-mode and an automatic copy paper size priority sub-mode which are changed by actuating the copy paper size selector. |
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DETAILED DESCRIPTION In view of the above-mentioned drawbacks, it is an object of the present invention to provide an image forming apparatus having a smaller number of mode setting keys. It is another object of the present invention to provide an image forming apparatus having a key arrangement corresponding to the two basic operation manners. An image forming apparatus of the present invention comprises document holder means for holding a document, document size detection means for detecting the size of the document, copy paper feeder means carrying a plurality of copy paper sheets having different sizes for feeding a copy paper sheet, copying means for copying an image of the document onto the fed copy paper sheet, the copying means including a copy magnification changer, copy paper size selection means for selecting a desired copy paper size from the plurality of copy paper sizes, all-clear means, and control means for controlling the copy paper feeder means and the copy magnification changer so as to clear the previously set copying condition and execute an automatic document size priority mode when the all-clear means is actuated, and to execute an automatic copy paper size priority mode when the copy paper size selection means is actuated, the automatic document size priority mode being that the copy paper feeder and the copy magnification changer are controlled so that the document image is copied onto a copy paper sheet corresponding to the document size at a life size magnification, and the automatic copy paper size priority mode being that the copy paper feeder and the copy magnification changer are controlled so that the image is copied onto a selected copy paper sheet at an appropriately changed copy magnification. With this construction, when the all-clear means is actuated, the image forming apparatus is set in the automatic document size priority mode. When the copy paper size selection means is actuated, the image forming apparatus is set in the automatic copy paper size priority mode at the same time when a desired copy paper size is selected by the copy paper size selection means
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