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    • 1. 发明授权
    • Methods and apparatus for image projection
    • 图像投影的方法和装置
    • US5614961A
    • 1997-03-25
    • US447104
    • 1995-05-22
    • Frank C. GibeauRoger F. BesslerJames H. Arbeiter
    • Frank C. GibeauRoger F. BesslerJames H. Arbeiter
    • G02B26/10G02B26/12G03B21/00H04N5/74H04N9/31H04N3/08
    • H04N9/3132G02B26/10G02B26/101G02B26/123H04N5/74H04N9/3129
    • Method and apparatus for a multi-application, laser-array-based image system utilizes three linear laser arrays. Each linear array generates multiple (N>1) parallel output beamlets at one of the three primary colors (red, green, blue). The corresponding 1 to N output beamlets of the three linear arrays, each individually modulated in luminance according to a specific encoding scheme representing the video image to be produced on the viewing screen, are combined spatially to form a single white light linear array source. Through a projection/scanner optical system, the N output beamlets of the white light source are simultaneously directed to, and swept horizontally across a distant viewing screen, resulting in a swath of N lines of a graphic video image. By producing M contiguous swaths vertically down the viewing screen, a full image of M.times.N lines is produced. The red, green, and blue linear laser arrays may consist of arrays of semiconductor laser diodes made of suitable semiconductor materials so as to directly emit radiation at wavelengths corresponding to red, green, and blue colors, respectively. Alternatively, the red, green and blue color arrays may be formed by arrays of semiconductor laser diodes emitting radiation at twice the desired red, green and blue wavelengths, whose radiation is coupled to arrays of second harmonic generation crystal elements.
    • 用于多应用,基于激光阵列的图像系统的方法和装置利用三个线性激光阵列。 每个线性阵列以三原色(红色,绿色,蓝色)中的一种生成多个(N> 1)并行输出子束。 根据表示要在观看屏幕上产生的视频图像的特定编码方案,按照亮度单独调制的三个线性阵列的对应的1到N个输出子束在空间上组合以形成单个白光线性阵列源。 通过投影/扫描仪光学系统,白光源的N个输出子束同时被引导到水平地扫过远处的观察屏幕,导致图形视频图像的N行的条纹。 通过在观察屏幕垂直方向生成M个连续的条带,产生了MxN线的全部图像。 红色,绿色和蓝色线性激光器阵列可以由由合适的半导体材料制成的半导体激光二极管的阵列组成,以便分别直接发射对应于红色,绿色和蓝色的波长的辐射。 或者,红色,绿色和蓝色阵列可以由发射两倍于期望的红色,绿色和蓝色波长的辐射的半导体激光二极管的阵列形成,其辐射耦合到二次谐波产生晶体元件的阵列。
    • 2. 发明授权
    • D-dimensional, fractional bandwidth signal processing apparatus
    • D维分数带宽信号处理装置
    • US5483474A
    • 1996-01-09
    • US151965
    • 1993-11-15
    • James H. ArbeiterRoger F. Bessler
    • James H. ArbeiterRoger F. Bessler
    • H03H17/02H04N5/14H04N5/44H04N7/01G06F15/31
    • H04N5/14H03H17/0202H04N7/0102H04N7/0132
    • Filtering apparatus responsive to a sequence of samples of an input signal that is digitally-sampled at a given frequency, wherein the input signal defines information having at least one dimension. The apparatus includes first resampler for resampling the input-signal to derive a first signal at a first frequency which is substantially equal to the reciprocal 1/C of a given factor C times the given frequency, and second resampler for resampling the first signal to derive a second signal at a second frequency which is substantially equal to the given factor C times the first frequency. The given factor C is an improper fraction having a least-common-denominator larger than one. This filtering apparatus is particularly suitable for variably spatially low-pass, high-pass, band-pass or hierarchical-pyramid filtering two-dimensional image information in each of its two-dimensions by amounts which are independent of one another.
    • 滤波装置响应于以给定频率被数字采样的输入信号的样本序列,其中输入信号定义具有至少一个维度的信息。 该装置包括用于重新采样输入信号的第一重采样器,以得到基本上等于给定频率乘以给定因子C的倒数1 / C的第一频率的第一信号,以及用于对第一信号进行重采样的第二重采样器 第二频率的第二信号基本上等于给定因子C乘以第一频率。 给定因子C是具有大于1的最小公分母的不适当分数。 该滤波装置特别适用于彼此独立的二维数据中的每一个中的可变空间低通,高通,带通或分层金字塔滤波二维图像信息。
    • 4. 发明授权
    • Resampling apparatus suitable for resizing a video image
    • 适用于调整视频图像大小的重采样装置
    • US5355328A
    • 1994-10-11
    • US33503
    • 1993-03-18
    • James H. ArbeiterRoger F. Bessler
    • James H. ArbeiterRoger F. Bessler
    • G06F17/17H03H17/06H04N5/14H04N5/262G06F15/31
    • H03H17/0685G06F17/17H04N5/14H04N5/2628
    • A digital resampler comprises a combination of first means and second means. The first means, which includes interpolation filter means, is responsive to the digital-signal sample values of an input sample stream for producing a first derived sample stream of digital-signal sample values in which the given sampling period P of the input stream is multiplied directly by a factor equal to M'/CL, where C is a given positive integer and M' is smaller than CL, either 2.sup.n (M'/CL) or 2.sup.-n (M'/CL) is equal to M/L and the absolute value of n is at least equal to zero, so that the sampling period of the first derived sample stream is (M'/CL)P. The second means, which includes octave prefiltering and sample means, is responsive to the first derived sample stream of digital-signal sample values for producing as an output a second derived sample stream of digital-signal sample values in which the first derived sampling period (M'/CL)P of the first derived sample stream is multiplied by a factor equal to either 2.sup.n (M'/CL) or 2.sup.-n (M'/CL), so that the sampling period of the second derived sample stream is (M/L)P.
    • 数字重采样器包括第一装置和第二装置的组合。 包括内插滤波器装置的第一装置响应于输入采样流的数字信号采样值,用于产生数字信号采样值的第一导出样本流,其中输入流的给定采样周期P被乘以 直接等于M'/ CL的因子,其中C是给定的正整数,M'小于CL,2n(M'/ CL)或2-n(M'/ CL)等于M / L 并且n的绝对值至少等于零,使得第一导出样本流的采样周期为(M'/ CL)P。 包括八度预滤波和采样装置的第二装置响应于数字信号采样值的第一导出采样流,以产生数字信号采样值的第二导出采样流作为输出,其中第一导出采样周期( 将第一导出样本流的M'/ CL)P乘以等于2n(M'/ CL)或2-n(M'/ CL)的因子,使得第二派生样本流的采样周期为 (M / L)P。