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    • 16. 发明授权
    • Floating-point arithmetic processing apparatus
    • 浮点算术处理装置
    • US5931895A
    • 1999-08-03
    • US789430
    • 1997-01-29
    • Hiromichi YamadaFumio MurabayashiTatsumi YamauchiNoriyasu IdoYoshikazu KiyoshigeTakahiro NishiyamaEiki Kamada
    • Hiromichi YamadaFumio MurabayashiTatsumi YamauchiNoriyasu IdoYoshikazu KiyoshigeTakahiro NishiyamaEiki Kamada
    • G06F7/38G06F5/01G06F7/00G06F7/483G06F7/74G06F7/76G06F7/52
    • G06F5/012G06F7/483
    • A floating-point arithmetic processing apparatus has a circuit for generating a limit value for normalization shift by subtracting an exponent of the minimum value of a normalized number from a value of an exponent of an intermediate result, and a circuit for generating, as a normalization shift number, smaller one of a shift number necessary for making the mantissa of the intermediate result a normalized number and the limit value for normalization shift. The floating-point arithmetic processing apparatus further has a circuit having a circuit for detecting a condition for overflow before the rounding process and a circuit for generating a value in the case of overflow, so that a predetermined value is delivered as a final result only when the overflow condition is detected before the rounding process but in the other case, a result obtained by performing the normalization process and the rounding process is delivered. When no overflow takes place before the rounding process but overflow occurs after the rounding process, the result obtained by performing the normalization process and the rounding process is delivered as a final result.
    • 一种浮点运算处理装置,具有通过从中间结果的指数的值减去归一化数的最小值的指数来生成用于归一化偏移的极限值的电路,以及生成作为归一化的归一化的电路 移位数,使中间结果的尾数所需的移位数中的较小的一个是归一化数,以及归一化移位的极限值。 浮点运算处理装置还具有电路,该电路具有用于检测在舍入处理之前的溢出条件的电路和用于在溢出的情况下产生值的电路,从而仅当预定值仅在 在舍入处理之前检测到溢出条件,但是在另一种情况下,通过执行归一化处理和舍入处理获得的结果被传送。 在四舍五入处理之前没有发生溢出,而在舍入处理后发生溢出的情况下,通过执行归一化处理和舍入处理获得的结果作为最终结果被传递。
    • 18. 发明授权
    • Image processing apparatus
    • 图像处理装置
    • US5586227A
    • 1996-12-17
    • US855083
    • 1992-03-20
    • Takashi KawanaKaoru SetoHiroshi ManoHiromichi YamadaAtsushi KashiharaTetsuo Saito
    • Takashi KawanaKaoru SetoHiroshi ManoHiromichi YamadaAtsushi KashiharaTetsuo Saito
    • G06K15/00G06F15/00
    • G06K15/00G06K2215/006G06K2215/0077
    • An image processing apparatus which generates an output image based on inputted print data, includes a resolution converting device which converts image data corresponding to the inputted print data at a first resolution into image data having a second resolution. The image conversion device includes a plurality of arithmetic processing units each of which performs computations which differ from the others, with one of the plurality of arithmetic processing unit being selected in dependence upon a recording density set for recording the output image. In other aspects, the resolution conversion computation can be input into the device from an external device. In situations where the generated output image is recorded on a pulse-width-modulated device, such as a laser beam printer, it is possible to control the pulse-width based on the density set for recording.
    • 一种基于输入的打印数据生成输出图像的图像处理装置,包括分辨率转换装置,其以与第一分辨率对应的输入的打印数据的图像数据转换为具有第二分辨率的图像数据。 图像转换装置包括多个算术处理单元,每个运算处理单元执行与其他运算不同的计算,其中,根据为记录输​​出图像设置的记录密度来选择多个算术处理单元中的一个。 在其他方面,分辨率转换计算可以从外部设备输入到设备中。 在产生的输出图像被记录在诸如激光束打印机的脉冲宽度调制装置的情况下,可以基于为记录设置的密度来控制脉冲宽度。