公开(公告)号：EP0730249B1

公开(公告)日：2002-09-25

申请号：EP96301122.6

申请日：1996-02-20

申请人： Hewlett-Packard Company, A Delaware Corporation

发明人： Pritchard, Thomas B.

IPC分类号： G06K15/10

CPC分类号： G06K15/10 ,  G06K2215/0077

公开(公告)号：EP0650140B1

公开(公告)日：1999-08-25

申请号：EP94307373.4

申请日：1994-10-07

申请人： Hewlett-Packard Company

发明人： Pritchard, Thomas B.

IPC分类号： G06K15/10

CPC分类号： G06K15/102 ,  G06K15/02 ,  G06K15/10

公开(公告)号：EP0650140A3

公开(公告)日：1995-07-12

申请号：EP94307373.4

申请日：1994-10-07

申请人： Hewlett-Packard Company

发明人： Pritchard, Thomas B.

IPC分类号： G06K15/10

CPC分类号： G06K15/102 ,  G06K15/02 ,  G06K15/10

摘要： A method for reducing the volume of ink applied to high-density print regions by depleting certain pixels in these regions avoids problems associated with excessive ink, improves economy, and yet retains print quality. Pixels located along the edges of high-density regions are identified and not depleted, thus preserving the sharp image demarcations characteristic of high quality printing. An upper bound for the percentage of depleted pixels may be chosen. A two-dimensional depletion table having certain entries designated as potential depletion candidates is tiled across a pixel image to be depleted. The designated entries are spaced apart within the table. If a pixel in the image is a candidate to be depleted according to the depletion table and if it is not an edge pixel, then it is depleted.

摘要翻译： 通过消耗这些区域中的某些像素来减少施加到高密度打印区域的墨水量的方法避免了与过量墨水相关的问题，改善了经济性，并且保持了打印质量。 位于高密度区域边缘的像素被识别并且不会被耗尽，因此保留了高质量打印的清晰图像分界特征。 可以选择耗尽像素的百分比的上限。 具有被指定为潜在耗尽候选者的某些条目的二维耗尽表跨过要被耗尽的像素图像平铺。 指定的条目在表格中间隔开。 如果图像中的像素是根据耗尽表而被耗尽的候选者，并且如果它不是边缘像素，则其被耗尽。

公开(公告)号：EP0956963A1

公开(公告)日：1999-11-17

申请号：EP99303598.9

申请日：1999-05-07

申请人： Hewlett-Packard Company

发明人： Paulsen, Ronald R. ,  Pritchard, Thomas B. ,  Lowe, David J. ,  Ross, Eric P.

IPC分类号： B41J2/175

CPC分类号： B41J2/17546

摘要： The present disclosure relates to a replaceable printing component (14) for an ink-jet printing system (10) having at least one replaceable printing component (14). The replaceable printing component (14) includes an electrical storage device (38) responsive to printing system control signals for transferring information between the printing component (14) and the ink-jet printing system (10). The electrical storage device (38) includes a storage portion containing a plurality of data fields associated with the replaceable printing component (14). Included in the electrical storage device (38) is a plurality data values stored in each the plurality of data fields. Also included is a control portion responsive to control signals for selectively transferring a block of data values having a preselected size between the ink-jet printer (12) and the storage portion (38). The plurality of data fields are sized and arranged in the storage portion (38) to ensure each of the plurality of data fields is transferred in a single data transfer between the ink-jet printer (12) and the storage portion (38).

摘要翻译： 本公开涉及一种用于具有至少一个可更换打印部件（14）中的喷墨打印系统（10）的可更换打印部件（14）。 可更换打印部件（14）包括在电存储装置（38）响应于打印系统控制信号，在打印部件（14）和喷墨打印系统（10）之间传递环的信息。 电存储装置（38）包括含有与可替换打印部件（14）相关联的数据字段的多个A存储部分。 包括在电存储装置（38）是存储在所述多个数据域的多元性dataValues。 所以包括的是响应于控制信号，用于选择性地传递环具有喷墨打印机（12）和存储部分（38）之间的预先选择的大小的数据值的块的控制部分。 数据字段的多元性的尺寸和在所述存储部分（38），以确保每个数据字段的多个在喷墨打印机（12）和存储部分（38）之间的单个数据传输被传输布置。

公开(公告)号：EP0525990B1

公开(公告)日：1997-04-23

申请号：EP92306035.4

申请日：1992-06-30

申请人： Hewlett-Packard Company

发明人： Pritchard, Thomas B. ,  Hoekstra, Casey D. ,  Klaus, Richard I. ,  Franz, Douglas L.

IPC分类号： G06F11/22

CPC分类号： G01R31/3185 ,  G01R31/31713 ,  G01R31/31715

公开(公告)号：EP0329837A2

公开(公告)日：1989-08-30

申请号：EP88120033.1

申请日：1988-12-01

申请人： Hewlett-Packard Company

发明人： Pritchard, Thomas B.

IPC分类号： B41J3/30 ,  G06F3/12

CPC分类号： B41J3/30

摘要： A character enhancement generator (12) for use with a printer for the reproduction of bold typeface character designs, generally includes a dot sequence input terminal (100) for receiving input data. Two bold control input terminals (110, 111) enable the selection of the desired bold mode. A combinational logic circuit (102) is connected to the dot sequence input terminal and to the bold control input terminals, for implementing the selection of the desired bold mode. A memory circuit (104) is connected to the combinational logic circuit, for storing data indicative of the previous input sequence to provide the desired bold mode. An output terminal (106) is connected to the memory circuit, for supplying dot sequence output data.

摘要翻译： 一种与打印机一起用于再现粗体字符设计的字符增强发生器（12）通常包括用于接收输入数据的点序列输入端（100）。 两个粗体控制输入端（110,111）能够选择所需的粗体模式。 组合逻辑电路（102）连接到点序列输入端和粗体控制输入端，用于实现所需粗体模式的选择。 存储器电路（104）连接到组合逻辑电路，用于存储指示先前输入序列的数据以提供所需的粗体模式。 输出端子（106）连接到存储器电路，用于提供点序列输出数据。

公开(公告)号：EP0956963B1

公开(公告)日：2004-08-11

申请号：EP99303598.9

申请日：1999-05-07

申请人： Hewlett-Packard Company, A Delaware Corporation

发明人： Paulsen, Ronald R. ,  Pritchard, Thomas B. ,  Lowe, David J. ,  Ross, Eric P.

IPC分类号： B41J2/175

CPC分类号： B41J2/17546

公开(公告)号：EP0329837A3

公开(公告)日：1990-05-02

申请号：EP88120033.1

申请日：1988-12-01

申请人： Hewlett-Packard Company

发明人： Pritchard, Thomas B.

IPC分类号： B41J3/30 ,  G06F3/12

CPC分类号： B41J3/30

摘要： A character enhancement generator (12) for use with a printer for the reproduction of bold typeface character designs, generally includes a dot sequence input terminal (100) for receiving input data. Two bold control input terminals (110, 111) enable the selection of the desired bold mode. A combinational logic circuit (102) is connected to the dot sequence input terminal and to the bold control input terminals, for implementing the selection of the desired bold mode. A memory circuit (104) is connected to the combinational logic circuit, for storing data indicative of the previous input sequence to provide the desired bold mode. An output terminal (106) is connected to the memory circuit, for supplying dot sequence output data.

摘要翻译： 一种与打印机一起用于再现粗体字符设计的字符增强发生器（12）通常包括用于接收输入数据的点序列输入端（100）。 两个粗体控制输入端（110,111）能够选择所需的粗体模式。 组合逻辑电路（102）连接到点序列输入端和粗体控制输入端，用于实现所需粗体模式的选择。 存储器电路（104）连接到组合逻辑电路，用于存储指示先前输入序列的数据以提供所需的粗体模式。 输出端子（106）连接到存储器电路，用于提供点序列输出数据。

公开(公告)号：EP0730249A3

公开(公告)日：1998-04-01

申请号：EP96301122.6

申请日：1996-02-20

申请人： Hewlett-Packard Company

发明人： Pritchard, Thomas B.

IPC分类号： G06K15/10

CPC分类号： G06K15/10 ,  G06K2215/0077

摘要： A data compression and decompression procedure for a serial printer handles data from a print swath (30) that includes Y rows of pixel data. The procedure divides the print swath (30) into N microbands (32, 34, 36...) of pixel data, with each microband (30) including y rows of pixel data (where y x N ≥ Y). The procedure compresses each microband (30) of the pixel data by breaking up the microband (30) into microblocks (38) and comparing data in each microblock (38) with a seed value to arrive at a compressed microblock (54) based upon data differences from the seed value. Each microblock (38) comprises a block of pixel data that is m bits wide by y rows high, where m is a small fraction of M bits of pixel data that are printable by the printhead across a sheet. All microbands (32, 34, 36...) of a swath (30) are subjected to the data compression procedure so as to create positionally corresponding sets of compressed data microblocks (54) for all of the microbands (32, 34, 36...). In preparation for printing, the procedure decompresses all N microbands (32, 34, 36...) of raster data by acting on each set of compressed microblocks (54) to recreate a set of N microbands (32, 34, 36...) of decompressed pixel data. The procedure then feeds the N microbands (32, 34, 36...) of decompressed raster data, in parallel, to the printhead (10, 12, 14, 16).

公开(公告)号：EP0730249A2

公开(公告)日：1996-09-04

申请号：EP96301122.6

申请日：1996-02-20

申请人： Hewlett-Packard Company

发明人： Pritchard, Thomas B.

IPC分类号： G06K15/10

CPC分类号： G06K15/10 ,  G06K2215/0077

摘要： A data compression and decompression procedure for a serial printer handles data from a print swath (30) that includes Y rows of pixel data. The procedure divides the print swath (30) into N microbands (32, 34, 36...) of pixel data, with each microband (30) including y rows of pixel data (where y x N ≥ Y). The procedure compresses each microband (30) of the pixel data by breaking up the microband (30) into microblocks (38) and comparing data in each microblock (38) with a seed value to arrive at a compressed microblock (54) based upon data differences from the seed value. Each microblock (38) comprises a block of pixel data that is m bits wide by y rows high, where m is a small fraction of M bits of pixel data that are printable by the printhead across a sheet. All microbands (32, 34, 36...) of a swath (30) are subjected to the data compression procedure so as to create positionally corresponding sets of compressed data microblocks (54) for all of the microbands (32, 34, 36...). In preparation for printing, the procedure decompresses all N microbands (32, 34, 36...) of raster data by acting on each set of compressed microblocks (54) to recreate a set of N microbands (32, 34, 36...) of decompressed pixel data. The procedure then feeds the N microbands (32, 34, 36...) of decompressed raster data, in parallel, to the printhead (10, 12, 14, 16).

摘要翻译： 对于串行打印机数据压缩和解压步骤，由一个打印行数据处理（30）做了包括像素数据的y行。 该过程将所述打印条带（30）转换成像素数据的微N个波段（32，34，36 ...），与每个微带（30）包括像素数据的y行（其中y×N个≥Y）。 该过程通过在每个微块（38）以种子值分手微带（30）成微块（38）和比较的数据压缩的像素数据的每个微带（30），以在基于数据压缩微块（54）到达 从该种子值的差异。 每个微块（38）包括像素数据的块确实是由y行m比特宽高，其中m是像素数据的M比特并一小部分是由横跨片打印头打印。 一刈幅（30）的所有微条带（32，34，36 ...）进行的数据压缩步骤，以便为所有的微条带（32，34，以创建压缩的数据微块（54）的位置上对应套，36 ...）。 在准备打印，该过程通过作用于各组压缩微块（54）的重新创建一组N个微条带（32，34，36的解压缩所有N个微频带的光栅数据（32，34，36 ...）.. 解压缩的像素数据）。 然后，过程进料的N个微条带（32，34，36 ...）解压缩的光栅数据，并行地向所述打印头（10，12，14，16）。