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    • 1. 发明授权
    • Drive circuit for character and graphic display device
    • 字符和图形显示装置的驱动电路
    • US4388621A
    • 1983-06-14
    • US158263
    • 1980-06-10
    • Shigeru KomatsuShigeru HirahataTsuguji Tachiuchi
    • Shigeru KomatsuShigeru HirahataTsuguji Tachiuchi
    • G09G5/24G06F3/153G09G1/16G09G5/00G09G5/397G09G5/399G09G1/00
    • G09G5/001
    • In a .phi..sub.2 cycle steal mode, a clock signal is selected such that a time period during which a RAM is connected to a timing signal generator for display is extended and a time period during which the RAM is connected to a CPU is shortened accordingly, without changing an overall period. This clock signal is used to actuate a switching circuit for the RAM while a clock signal having unmodified duty ratio is applied to the CPU, a ROM and external circuits so that a display data readout period from the RAM is extended without affecting the CPU clock frequency and the operation of other circuits. During this readout period, a plurality of display address signals are applied to the RAM from the timing signal generator and a plurality of data derived from the RAM are sequentially loaded in a register which is then read out at a desired timing to enable the display of a plurality of characters in one CPU clock period.
    • 在phi 2循环盗取模式中,选择时钟信号,使得连接到用于显示的定时信号发生器的RAM的时间段被延长,并且相应地缩短RAM连接到CPU的时间段, 而不改变整个时期。 该时钟信号用于激活用于RAM的开关电路,而具有未修改占空比的时钟信号被施加到CPU,ROM和外部电路,使得来自RAM的显示数据读出周期不会影响CPU时钟频率 和其他电路的操作。 在该读出期间,多个显示地址信号从定时信号发生器施加到RAM,并且从RAM导出的多个数据顺序地加载到寄存器中,然后在期望的定时读出寄存器,以使得能够显示 一个CPU时钟周期内的多个字符。
    • 4. 发明授权
    • Pattern display apparatus
    • 图案显示装置
    • US4408197A
    • 1983-10-04
    • US259162
    • 1981-04-30
    • Shigeru KomatsuKunihiko NagaiTakuo KoyamaTsuguji TachiuchiShigeru Hirahata
    • Shigeru KomatsuKunihiko NagaiTakuo KoyamaTsuguji TachiuchiShigeru Hirahata
    • G06F3/153G09G5/22G09G5/26G09G1/16
    • G09G5/227
    • A display apparatus for use with a cathode-ray tube capable of displaying patterns in interlaced scanning and non-interlaced scanning operation modes, comprising a composite video signal synthesizer, a memory for storing pattern data, a mode setting circuit for the memory, a data selection signal generator and a raster line number signal generator. The memory stores data for relatively simple patterns such as alphabetical letters and those for relatively complicated patterns such as Chinese characters in individually particular areas in the memory addresses of these different areas are identified by a combination of the data selection signal and the raster line number signal supplied to the memory from the data selection signal generator and the raster line number signal generator. Accordingly, the apparatus is capable of displaying both relatively simple and relatively complicated patterns with satisfactory resolution and with a relatively small-scale structure.
    • 一种用于能够以隔行扫描和非隔行扫描操作模式显示图案的阴极射线管的显示装置,包括复合视频信号合成器,用于存储图案数据的存储器,用于存储器的模式设置电路,数据 选择信号发生器和光栅线数信号发生器。 存储器存储用于诸如字母字母的相对简单模式的数据,以及用于相对复杂图案的数据,例如在这些不同区域的存储器地址中的单独特定区域中的汉字,数据选择信号和光栅行号信号 从数据选择信号发生器和光栅线数信号发生器提供给存储器。 因此,该装置能够以令人满意的分辨率和相对较小规模的结构显示相对简单且相对复杂的图案。
    • 6. 发明授权
    • Character pattern display system
    • 字符图案显示系统
    • US4298931A
    • 1981-11-03
    • US44379
    • 1979-06-01
    • Tsuguji TachiuchiShigeru HirahataTeruhiro Takezawa
    • Tsuguji TachiuchiShigeru HirahataTeruhiro Takezawa
    • G06F13/18G09G1/16G09G5/00G09G5/22G06F13/00
    • G09G5/222G06F13/18G09G5/001
    • A data processing system such as a character display system is provided with a first memory circuit for storing coded characters to be displayed, a second memory circuit for storing picture element information of characters to be displayed, and a character display drive circuit for extracting the coded character information from said first memory circuit and extracting and reproducing the picture element information from said second memory circuit. The first memory circuit includes a plurality of random access memories (RAMs). The character display system further includes an address switching circuit for successively and alternately applying an address signal from the character display drive circuit to the RAMs, and an output signal switching circuit for switching the information output signals extracted from the RAMs in synchronism with the switching operation of the address switching circuit. With a simple and relatively inexpensive circuit construction, the character display system may always display characters. The system further includes a clock signal changing means to freely make access to the RAMs without using a program.
    • 诸如字符显示系统的数据处理系统设置有用于存储要显示的编码字符的第一存储器电路,用于存储要显示的字符的图像元素信息的第二存储器电路,以及用于提取编码的字符显示驱动电路 来自所述第一存储器电路的字符信息,并从所述第二存储器电路提取和再现所述图像元素信息。 第一存储器电路包括多个随机存取存储器(RAM)。 字符显示系统还包括一个地址切换电路,用于将字符显示驱动电路的地址信号连续地交替地施加到RAM;以及输出信号切换电路,用于与切换操作同步地切换从RAM提取的信息输出信号 的地址切换电路。 通过简单且相对便宜的电路结构,字符显示系统可以总是显示字符。 该系统还包括时钟信号改变装置,用于在不使用程序的情况下自由地访问RAM。
    • 7. 发明授权
    • Character and graphic signal generating apparatus
    • 字符和图形信号发生装置
    • US4591845A
    • 1986-05-27
    • US534684
    • 1983-09-22
    • Shigeru KomatsuShigeru Hirahata
    • Shigeru KomatsuShigeru Hirahata
    • G06F3/153G09G5/40G09G1/16
    • G09G5/40
    • A character and graphic signal generating apparatus of the type suitable for use with a personal computer for displaying characters and graphic patterns in a superposed relation according to a raster scan method comprises a frame buffer for storing coded character data, a DMA control unit for controlling DMA transfer of coded character data from a display RAM to the frame buffer in a non-display cycle, and units for reading out the data from the display RAM and the frame buffer in parallel relation in a display cycle so as to simultaneously derive the graphic data and the coded character data in each display cycle, whereby more display data can be read out in a unit time, and high-density display can be achieved without the sacrifice of the scanning speed.
    • 根据光栅扫描方法,适用于以个人计算机用于显示字符和叠加关系的图形的字符和图形信号发生装置包括用于存储编码字符数据的帧缓冲器,用于控制DMA的DMA控制单元 在非显示周期中将编码字符数据从显示RAM传送到帧缓冲器,以及用于在显示周期中并行地从显示RAM和帧缓冲器读出数据的单元,以便同时导出图形数据 和每个显示周期中的编码字符数据,从而可以在单位时间内读出更多的显示数据,并且可以在不牺牲扫描速度的情况下实现高密度显示。
    • 10. 发明授权
    • Video signal processing circuit of motion adaptive type
    • 运动自适应型视频信号处理电路
    • US4733297A
    • 1988-03-22
    • US36431
    • 1987-04-09
    • Kenji KatsumataMasato SugiyamaAkihide OkudaShigeru HirahataIsao NakagawaSunao Suzuki
    • Kenji KatsumataMasato SugiyamaAkihide OkudaShigeru HirahataIsao NakagawaSunao Suzuki
    • H04N11/20H04N5/14H04N7/01H04N9/78
    • H04N5/144H04N7/012H04N9/78
    • A video signal processing circuit of motion adaptive type includes a circuit for identifying motion of a picture in a video signal on the basis of a difference signal between at least a line signal appearing in an M-th field and a corresponding line signal appearing in an (M-1)th field so that, when a scanning line produced on the basis of the video signal is interpolated between scanning lines of the video signal to improve the picture quality, a signal for interpolating said scanning line is produced in a different manner depending on whether a portion of the video signal to the displayed is a still picture or a moving picture. The motion identifying circuit comprises a horizontal filter spreading the difference signal in the horizontal direction, a circuit delaying the output signal of the horizontal filter by one field after attenuation, a line memory delaying the output signal of the attenuating and delaying circuit by one line, and an output circuit generating a signal identifying the motion of the picture on the basis of the output signals of the horizontal filter, attenuating and delaying circuit and line memory.
    • 运动自适应型视频信号处理电路包括一个电路,用于根据出现在第M场的线路信号和出现在第M场的相应线路信号之间的差分信号识别视频信号中的图像的运动 (M-1)场,使得当基于视频信号产生的扫描线被内插在视频信号的扫描线之间以提高图像质量时,以不同的方式产生用于内插所述扫描线的信号 取决于所显示的视频信号的一部分是静止图像还是运动图像。 运动识别电路包括在水平方向上扩展差分信号的水平滤波器,将衰减后的水平滤波器的输出信号延迟一个场的电路,将存储器的衰减延迟电路的输出信号延迟一行, 以及输出电路,其基于水平滤波器的输出信号,衰减和延迟电路和行存储器来产生识别图像的运动的信号。