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    • 52. 发明授权
    • Method and apparatus for building rasterized lines of bitmap data to be
printed using a piecewise-linear direct memory access addressing mode
of retrieving bitmap data line segments
    • 用于使用分段线性直接存储器访问寻址模式来构建要打印的位图数据的光栅化行的方法和装置,用于检索位图数据线段
    • US5870535A
    • 1999-02-09
    • US854607
    • 1997-05-12
    • Darrin Lee DuffinJames Howard Ellis, Jr.Phillip Daniel Erwin, Jr.Cuong Manh Hoang
    • Darrin Lee DuffinJames Howard Ellis, Jr.Phillip Daniel Erwin, Jr.Cuong Manh Hoang
    • B41J5/30G06K15/02H04N1/21G06H15/00
    • G06K15/02G06K2215/0065G06K2215/0077G06K2215/008
    • An improved printer is provided that receives a print job from a host computer and divides the bitmap image of a page to be printed into a series of image blocks or tiles. Each image block containing non-null data will be stored in the printer's memory system, typically placed in a non-contiguous memory location with respect to other blocks. The null image data blocks will not be stored in the printer's memory system, but instead only their locations on the physical printed page will be stored in a "block list table." Each entry in the block list table contains the beginning address of the physical RAM area that contains one of the image data blocks, and also contains other variables or attributes concerning the particular image data block, such as whether or not this block is a regular non-null data block, or a "no-op" (or "NOP") block containing null data. Null data blocks require no physical memory address to be listed in their entry on the block list table, since no physical RAM areas are needed for storing null bitmap image data. Rather than building a band buffer in contiguous memory before shipping rasterized data to the laser printhead, the present invention builds in a cache a series of rasterized line segments of bitmap data in real time and sends them to the laser printhead "on the fly," by retrieving a single rasterized line segment of data, block-by-block, as needed to complete a single entire line.
    • 提供了一种改进的打印机,其从主计算机接收打印作业并将要打印的页面的位图图像划分成一系列图像块或瓦片。 包含非空数据的每个图像块将被存储在打印机的存储器系统中,通常相对于其它块放置在非连续的存储器位置。 空图像数据块将不会存储在打印机的存储系统中,而只是它们在物理打印页面上的位置将被存储在“块列表”中。 块列表表中的每个条目包含包含图像数据块之一的物理RAM区域的起始地址,并且还包含与特定图像数据块有关的其他变量或属性,例如该块是否为常规非 -null数据块或包含空数据的“no-op”(或“NOP”)块。 空数据块不需要将物理内存地址列在块列表表的条目中,因为不需要物理RAM区域来存储空位图图像数据。 在将光栅化数据发送到激光打印头之前,不是在连续存储器内构建带缓冲器,而是本身在高速缓存中实时地构建位图数据的一系列光栅化线段,并将它们“即时地”发送到激光打印头。 通过根据需要逐块检索单个光栅化的数据线段,以完成单个整行。
    • 54. 发明授权
    • Image recorder
    • 影像记录器
    • US5838888A
    • 1998-11-17
    • US774377
    • 1996-12-27
    • Naoki Oda
    • Naoki Oda
    • B41J5/30G06F3/12G06K15/10G06K15/00
    • G06K15/10G06K2215/0077
    • To increase the printing speed by distributing data processing of a printing head, an image recorder is provided with a print buffer for storing print data received from an information processor, a printing head having nozzles for plural channels that print on the basis of the print data stored in the print buffer, a 4-bit shift register unit that temporarily stores the print data of the print buffer and sequentially supplies the print data for each dot to the printing elements, and a buffer controller that divides the nozzles into odd and even channel groups and transfers the print data corresponding to the channel groups with a staggered timing to the 4-bit shift register unit from the print buffer.
    • 为了通过分发打印头的数据处理来提高打印速度,图像记录器设置有用于存储从信息处理器接收的打印数据的打印缓冲器,具有用于基于打印数据进行打印的多个通道的喷嘴的打印头 存储在打印缓冲器中的4位移位寄存器单元,其临时存储打印缓冲器的打印数据,并且将每个点的打印数据顺序地提供给打印元件;以及缓冲器控制器,其将喷嘴分成奇数通道 并将与交错定时相对应的通道组的打印数据从打印缓冲器传送到4位移位寄存器单元。
    • 55. 发明授权
    • Pulse width modulation method for a parallel input print head
    • 并行输入打印头的脉宽调制方法
    • US5739838A
    • 1998-04-14
    • US425278
    • 1995-04-20
    • James T. StoopsDavid A. Johnson
    • James T. StoopsDavid A. Johnson
    • B41J2/355B41J2/52G06K15/10B41J2/35
    • B41J2/52G06K15/10G06K2215/0077
    • An apparatus and method for generating all of the print levels represented by an image data signal using a parallel input print head which has an input data bus which is narrower than the image data signal involves processing and printing image data multiple times. Each time the image data is processed, it is reduced from its original width down to the width which the print head can accept. The process includes the steps of determining the minimum number of times L.sub.min that the print head must be loaded to accomplish printing using the full width of the image data signal; processing the image data L times, where L.gtoreq.L.sub.min, to produce L output signals that (1) are no wider than the width of the input data bus and (2) have values such that the sum of the values of the L output signals equals the value of the input data signal; and using the L output signals to drive the print head.
    • 使用具有比图像数据信号更窄的输入数据总线的并行输入打印头来产生由图像数据信号表示的所有打印级别的装置和方法涉及多次处理和打印图像数据。 每次处理图像数据时,它将从原始宽度减小到打印头可以接受的宽度。 该处理包括以下步骤:确定打印头必须加载的最小次数Lmin以使用图像数据信号的全宽来完成打印; 处理图像数据L次,其中L> / = Lmin,以产生(1)不比输入数据总线的宽度宽的L个输出信号,以及(2)具有使得L 输出信号等于输入数据信号的值; 并使用L个输出信号来驱动打印头。
    • 56. 发明授权
    • Image forming apparatus
    • 图像形成装置
    • US5517318A
    • 1996-05-14
    • US961330
    • 1992-10-15
    • Kenji Suzuki
    • Kenji Suzuki
    • B41J2/44B41J2/00G03G15/04G06K15/12H04N1/04H04N1/113H04N1/32H04N1/387H04N1/21
    • H04N1/0408G06K15/1223H04N1/0402H04N1/0414H04N1/32358H04N1/32491G06K2215/0077H04N1/1135H04N2201/3292
    • Although three resolutions of 600 SPI, 300 SPI and 150 SPI are available, a host apparatus 1 applies data D to line buffers 3 and 4 at a video rate determined by the resolution of 600 SPI. The data stored in the line buffers 3 and 4 are read with clock signals outputted by data writing and reading control sections 5 and 6, and are applied through a multiplexer 7 to a laser beam source 8 in a printer. In the case where the resolution specified is 300 SPI, the control sections 5 and 6 read the data with a clock signal whose period is twice as long as that which is employed in the case where the resolution is 600 SPI; and in the case where the resolution specified is 150 SPI, they read the data with a clock signal whose period is four times as long. Furthermore, in the case where the resolution is 300 SPI, one and the same data is read as much as two lines in succession; and in the case where the resolution is 150 SPI, one and the same data is read as much as four lines in succession.
    • 尽管有600个SPI,300个SPI和150个SPI的三个分辨率可用,但主机设备1以由600 SPI的分辨率确定的视频速率将数据D应用于行缓冲器3和4。 存储在行缓冲器3和4中的数据由数据写入和读取控制部分5和6输出的时钟信号读取,并且通过多路复用器7被施加到打印机中的激光束源8。 在指定的分辨率为300 SPI的情况下,控制部分5和6使用周期是分辨率为600 SPI的情况下的时间长度的两倍的时钟信号来读取数据; 并且在指定的分辨率为150 SPI的情况下,它们以周期为四倍的时钟信号读取数据。 此外,在分辨率为300 SPI的情况下,连续读取两条相同的数据; 并且在分辨率为150 SPI的情况下,连续读取多达四行的相同数据。
    • 58. 发明授权
    • Printing apparatus capable of changing print format
    • 能够改变打印格式的打印设备
    • US5481367A
    • 1996-01-02
    • US190489
    • 1994-02-02
    • Yoshinori YokoeYuji Hattori
    • Yoshinori YokoeYuji Hattori
    • B41J5/30G06F3/12G06F17/21G06K15/00G03G15/36
    • G06K15/00G06K2215/0071G06K2215/0077G06K2215/0082
    • There is disclosed a printing apparatus implemented as a laser printer capable of changing the print format when outputting print data. When the operator changes the print format at the printer, the CPU changes the print data in a text buffer of a built-in RAM according to the changed print format, the data being converted into image data in a dot pattern for storage into an image buffer. The operator then pushes a reprint key, causing the CPU to read the pages of print data stored in the image buffer for outputting to a laser printer engine via a printer engine interface for reprinting. The printing apparatus allows the print format to be changed easily for efficient reprinting of the last print data in the new format without the need for the host computer to supply the same print data again.
    • 公开了一种实现为能够在输出打印数据时改变打印格式的激光打印机的打印设备。 当操作员在打印机上改变打印格式时,CPU根据改变的打印格式将打印数据改变到内置RAM的文本缓冲器中,数据被转换为点阵图形中的图像数据以存储到图像中 缓冲。 然后操作员按下重新打印键,使得CPU读取存储在图像缓冲器中的打印数据的页面,以通过打印机引擎界面输出到激光打印机引擎以进行重新打印。 打印设备允许打印格式容易地改变,以便以新格式高效地重新打印最后的打印数据,而不需要主计算机再次提供相同的打印数据。
    • 59. 发明授权
    • Printer having print data arithmetic logic
    • 具有打印数据运算逻辑的打印机
    • US5478156A
    • 1995-12-26
    • US106199
    • 1993-08-13
    • Hiroshi KikuchiKatsuyuki ItoShinichi KatakuraJiro TanumaHiroshi OkadaKazuhiko NagaokaAkira Nagumo
    • Hiroshi KikuchiKatsuyuki ItoShinichi KatakuraJiro TanumaHiroshi OkadaKazuhiko NagaokaAkira Nagumo
    • G06K15/00H04N1/387
    • G06K15/00G06K2215/006G06K2215/0071G06K2215/0077
    • A printer includes a controller for providing a sequence control for the printer in its entirety in response to a control signal and a video signal from another controller. A printer head is adapted for latching and printing a printing data signal transmitted from the controller. Print data arithmetic and logic circuitry provides a logical operation processing for video data signals, counting video clock signals transmitted from the controller, and includes storage for storing the video data signals transmitted from the controller, a selector responsive to reference line timing signals for selectively alternately outputting the video data signals, an additional line signal generator for generating from video signals received from the controller, a video data signal representing an additional line destined for between reference lines during an interval of timing, and logical operation circuitry for performing a logical operation for the video data signals read out from the storage and supplying to the printer head the video data signals subjected to the logical operation in the form of the printing data signal.
    • 打印机包括控制器,用于响应于来自另一个控制器的控制信号和视频信号而全面地为打印机提供序列控制。 打印机头适于锁定和打印从控制器发送的打印数据信号。 打印数据运算和逻辑电路为视频数据信号提供逻辑运算处理,对从控制器发送的视频时钟信号进行计数,并且包括用于存储从控制器发送的视频数据信号的存储器,响应于参考线定时信号的选择器, 输出视频数据信号,附加线路信号发生器,用于从在控制器接收的视频信号中生成代表在定时间隔期间指定给参考线路的附加行的视频数据信号;以及逻辑运算电路,用于执行逻辑运算 视频数据信号从存储器中读出并以打印数据信号的形式向经过了逻辑运算的视频数据信号提供给打印头。