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    • 2. 发明授权
    • Image signal coding apparatus
    • 图像信号编码装置
    • US4799110A
    • 1989-01-17
    • US888493
    • 1986-07-23
    • Katsutoshi HisadaNobuaki KokubuShigeki SakuraiYukio MurataTatsuo Okano
    • Katsutoshi HisadaNobuaki KokubuShigeki SakuraiYukio MurataTatsuo Okano
    • G06T9/00H04N1/417H04N1/40
    • H04N1/4175G06T9/005
    • An image signal coding apparatus includes reference and coding line change point detection circuits, reference line shift registers, a coding line shift register, a symbol detection circuit, coding and reference line ROM tables, and a code determination circuit. The coding line change point detection circuit receives a serial reference line image signal in synchronism with a serial coding line image signal. The reference line shift registers receive serial change point data in the reference line image signal and output parallel reference line change point data. The coding line shift register receives serial change point data in the coding line image signal and outputs parallel coding line change point data. The symbol detection circuit monitors output states of the reference and coding line shift registers. A run length counter counts the number of pixels between the change points in the coding line image signal. The ROM tables cooperate with the code determination circuit to code the coding line image signal in response to outputs from the symbol detection circuit and the run length counter.
    • 图像信号编码装置包括参考编码线切换点检测电路,参考线移位寄存器,编码线移位寄存器,符号检测电路,编码和参考线ROM表以及代码确定电路。 编码线变换点检测电路与串行编码线图像信号同步地接收串行参考线图像信号。 参考线移位寄存器在参考线图像信号中接收串行变化点数据,并输出并行参考线变化点数据。 编码行移位寄存器在编码行图像信号中接收串行变换点数据,并输出并行编码行变更点数据。 符号检测电路监视参考和编码行移位寄存器的输出状态。 运行长度计数器对编码行图像信号中的变化点之间的像素数进行计数。 ROM表与代码确定电路协调,以响应于符号检测电路和游程长度计数器的输出对编码行图像信号进行编码。
    • 8. 发明授权
    • Image transmission apparatus
    • 图像传输装置
    • US5537231A
    • 1996-07-16
    • US936528
    • 1992-08-28
    • Katsutoshi HisadaYoshihisa Tadokoro
    • Katsutoshi HisadaYoshihisa Tadokoro
    • G06T9/00H04N1/333H04N1/64H04N1/327
    • H04N1/33392G06T9/005H04N1/33323H04N1/64H04N2201/33342H04N2201/33357H04N2201/33378
    • An image transmission apparatus includes a color codec section for performing color image coding of a color image, a run-length codec section for performing run-length coding of a monochrome image, and a switching unit for arbitrarily switching the codec sections and to perform coding in units of pages in one communication cycle depending on whether each page is a color image or a monochrome image. Whether each page is constituted by a color image or a monochrome image is set in advance, and corresponding information is stored in a memory. Coding is performed by a coding scheme set for each page, and the coded data is transmitted. Alternatively, coded data obtained by both the codec sections and are stored in a hard disk, and the data coded by a coding scheme which an apparatus at the other end of a communication line can handle is read out and transmitted.
    • 一种图像传输装置,包括用于执行彩色图像的彩色图像编码的彩色编解码器部分,用于执行单色图像的游程长度编码的游程编解码器部分和用于任意切换编解码器部分的切换单元,并执行编码 在一个通信周期中以页为单位,取决于每个页面是彩色图像还是单色图像。 每个页面是由彩色图像还是单色图像构成,并将相应的信息存储在存储器中。 通过对每个页面设置的编码方案执行编码,并且发送编码数据。 或者,通过两个编解码器部分获得并存储在硬盘中的编码数据,以及通过通信线路的另一端可以处理的设备的编码方案编码的数据被读出并发送。