Data conversion apparatus and image recording apparatus
First Claim
1. An image recording apparatus having recording means that performs a recording operation while scanning received image data by a recording head, said apparatus comprising:
- conversion means for converting pixel density of said received image data at each line according to a resolution of said recording in a main-scanning direction;
first storage means for storing the received image data whose resolution is converted by said conversion means;
processing means for collectively performing a process for converting the resolution of the image data in sub-scanning direction at each predetermined length according to the resolution of said recording head in the sub-scanning direction and a process for converting a horizontal and vertical arrangement of the image data whose resolution is converted in the sub-scanning direction, by inputting a plurality of predetermined length of image data corresponding to a plurality of lines, which are read out from said first storage means, wherein said predetermined length is shorter than a length of image data corresponding to one line; and
second storage means for storing the image data processed by said processing means,wherein said recording means performs a recording operation in accordance with the image data stored in said second storage means.
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Abstract
After the image data transmitted via a line is received and is then stored in a predetermined zone a of a RAM. The resolution of the image data along the line is converted to the resolution of the recording means in the main-scanning direction after the image data is decoded. The converted data is then stored in a predetermined zone b of the RAM. Subsequently, the image data is read by a predetermined length (eight pixels) to reverse the arrangement of the image data in the horizontal and vertical directions while converting the resolution of the image data to the resolution of the recording means in the sub-scanning direction. The resulting data is then stored in a predetermined zone c of the RAM.
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Citations
15 Claims
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1. An image recording apparatus having recording means that performs a recording operation while scanning received image data by a recording head, said apparatus comprising:
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conversion means for converting pixel density of said received image data at each line according to a resolution of said recording in a main-scanning direction; first storage means for storing the received image data whose resolution is converted by said conversion means; processing means for collectively performing a process for converting the resolution of the image data in sub-scanning direction at each predetermined length according to the resolution of said recording head in the sub-scanning direction and a process for converting a horizontal and vertical arrangement of the image data whose resolution is converted in the sub-scanning direction, by inputting a plurality of predetermined length of image data corresponding to a plurality of lines, which are read out from said first storage means, wherein said predetermined length is shorter than a length of image data corresponding to one line; and second storage means for storing the image data processed by said processing means, wherein said recording means performs a recording operation in accordance with the image data stored in said second storage means. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A data conversion apparatus for rearranging a predetermined amount of image data in the horizontal direction and outputting the image data by said predetermined amount in the vertical direction, said apparatus comprising:
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a plurality of storage means for storing the image data in the horizontal direction; selection means for selecting from said plurality of storage means a storage means for storing said image data in the horizontal direction, said selection means being capable of selecting a plurality of storage means at the same time; generation means for generating a signal for causing the storage means selected by said selection means to store said image data in the horizontal direction; and output means for outputting the image data in the vertical direction by said predetermined amount according to the image data stored in said plurality of storage means.
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10. A data conversion apparatus for converting a horizontal and vertical arrangement of image data, said apparatus comprising:
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a plurality of storage means for storing a predetermined amount of image data in a horizontal direction; selection means for selecting from said plurality of storage means a storage means for storing said predetermined amount of image data, said selection means selecting a plurality of storage means at a same time, wherein a same image data is stored in said storage means selected at the same time by said selection means; generation means for generating a signal for causing the storage means selected by said selection means to store said image data in the horizontal direction; and output means for outputting the image data in the vertical direction according to the image data stored in said plurality of storage means. - View Dependent Claims (12)
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11. An image recording apparatus having recording means that performs a recording operation while scanning received image data by a recording head, said apparatus comprising:
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first conversion means for converting the pixel density of said received image data at each line to the resolution of said recording means in the main-scanning direction; first storage means for storing the received image data whose resolution is converted by said first conversion means; second conversion means for reading a predetermined length of the resolution-converted image data stored in said first storage means so as to convert the resolution of said data in the sub-scanning direction to the resolution of said recording means in the sub-scanning direction; second storage means for storing the image data whose resolution is converted by said second conversion means; and control means for reversing the horizontal and vertical arrangement of the image data while performing resolution conversion by said second conversion means.
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13. A data conversion apparatus for converting the horizontal and vertical arrangement of image data, comprising:
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storage means for storing line image data; and processing means for collectively performing a process for converting a resolution of the image data in a sub-scanning direction at each predetermined length according to a resolution of said recording means in a sub-scanning direction, and a process for converting the horizontal and vertical arrangement of the image data whose resolution is converted in the sub-scanning direction, by inputting a plurality of predetermined length of image data corresponding to a plurality of lines, which are read out from said storage means, wherein said predetermine length is shorter than a length of image data corresponding to one line. - View Dependent Claims (14, 15)
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Specification