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    • 4. 发明授权
    • Method and system of decoding compressed image data
    • 解压缩图像数据的方法和系统
    • US06259810B1
    • 2001-07-10
    • US08838186
    • 1997-04-15
    • John W. GillBruce A. Johnson
    • John W. GillBruce A. Johnson
    • G06K900
    • G06T9/005
    • A method and system of encoding and decoding image data in images having less than 128 distinct colors. Eight bit data bytes representing the color of each pixel data are re-indexed for each pixel to seven or less bits, and a sub-palette stores the relationship between the re-indexed colors and the original eight-bit color values. The remaining bits in the byte store run lengths of pixels that have contiguous colors. Further data compression is achieved by grouping pixels into rows, eliminating any duplicate rows and identifying the pixel data by a series of row pointers. Still further compression is accomplished by dropping representations of transparent pixels from the end of rows and representing a number of transparent pixels at the beginning of rows with a single byte. The compressed data is efficiently decoded using the row pointers to expedite vertical clipping of the image and adjusting horizontal clipping for leading and trailing transparent pixels.
    • 对具有少于128种不同颜色的图像中的图像数据进行编码和解码的方法和系统。 表示每个像素数据的颜色的八位数据字节对于每个像素被重新索引到七个或更少位,并且子调色板存储重新索引的颜色和原始的八位颜色值之间的关系。 字节存储中的其余位运行具有连续颜色的像素长度。 通过将像素分组成行,实现进一步的数据压缩,消除任何重复行并通过一系列行指针识别像素数据。 进一步的压缩是通过从行的末端丢弃透明像素的表示来实现的,并且用单个字节表示行的开始处的多个透明像素。 使用行指针对压缩数据进行有效的解码,以加快图像的垂直裁剪并调整前导和后置透明像素的水平裁剪。
    • 8. 发明授权
    • Temperature responsive control apparatus
    • 温度响应控制装置
    • US4253603A
    • 1981-03-03
    • US4701
    • 1979-01-19
    • Bruce A. Johnson
    • Bruce A. Johnson
    • F02C9/28F15B5/00G01D5/42G01K5/36G05D23/12
    • G01K5/36F02C9/28F15B5/00G01D5/42Y10T137/2409
    • A detector for sensing the compressor inlet temperature of a gas turbine engine and for producing an output pressure signal which is used by the fuel control of the engine. The magnitude of the output signal is determined by the position of a valve which changes positions in response to changes in temperature. The response time of the detector is made faster by causing a feedback pressure which acts on the valve to initially change at a slower rate than the output pressure (i.e., to lag the output pressure) when the output pressure changes as a result of temperature variations. The invention can be incorporated either in a self-contained sensor or in an add-on unit which can be retrofitted to existing sensors having relatively slow response characteristics.
    • 一种用于感测燃气涡轮发动机的压缩机入口温度并用于产生由发动机的燃料控制使用的输出压力信号的检测器。 输出信号的大小取决于响应于温度变化改变位置的阀的位置。 当输出压力由于温度变化而变化时,通过使作用在阀上的反馈压力以比输出压力更慢的速度(即,延迟输出压力)来使检测器的响应时间变得更快 。 本发明可以结合在独立的传感器中或者可以被加装到具有相对慢的响应特性的现有传感器的附加单元中。