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    • 96. 发明授权
    • Image forming apparatus operable in horizontal and vertical installations
    • 图像形成装置可在水平和垂直安装中操作
    • US5697016A
    • 1997-12-09
    • US597248
    • 1996-02-06
    • Kunihiro KitsuKaneatsu UchiyamaNobuyuki TanakaHiroyuki Kawai
    • Kunihiro KitsuKaneatsu UchiyamaNobuyuki TanakaHiroyuki Kawai
    • G03G15/20G03G15/32G03G21/20
    • G03G21/206G03G15/2017G03G15/2039G03G15/2064G03G15/32G03G21/203G03G2215/00012
    • Disclosed is an image forming apparatus for forming a toner image on a sheet both in a horizonal installation and in a vertical installation of the apparatus. The image forming apparatus is designed so that an air flow from a thermal fixing unit exerts no influence on an image forming operation of a photosensitive body and a temperature detection operation of the thermal fixing unit even when installed horizontally or vertically. This image forming apparatus therefore includes an exhaust duct for guiding a gas of an interior of the thermal fixing unit in an upper oblique direction from the thermal fixing unit to exhaust the interior Of the thermal fixing unit. The air flow from the thermal fixing unit does not therefore influence an image formation on the photosensitive body even when the apparatus is installed horizontally or vertically. This image forming apparatus also includes a temperature detector provided obliquely to a heat roller of the thermal fixing unit. The image forming apparatus further includes a plurality of temperature detectors each provided in a different position with respect to the heat roller of the thermal fixing unit. The image forming apparatus still further includes a temperature detector for detecting a temperature of the heat roller and a control circuit for controlling a fixing temperature of the heat roller by comparing a set temperature corresponding to an installing direction of the apparatus with a temperature detected by the temperature detector. The temperature of the heat roller can be therefore accurately controlled irrespective of the installing direction of the apparatus.
    • 公开了一种用于在水平安装和垂直安装中在片材上形成调色剂图像的图像形成装置。 图像形成装置被设计成使得即使在水平或垂直安装时,来自热定影单元的空气流也不影响感光体的图像形成操作和热定影单元的温度检测操作。 因此,该图像形成装置包括用于从热定影单元沿上倾斜方向引导热定影单元的内部的气体排出热定影单元的内部的排气管道。 因此,即使装置水平或垂直安装,来自热定影单元的空气流也不影响感光体上的图像形成。 该图像形成装置还包括倾斜于热定影单元的加热辊设置的温度检测器。 图像形成装置还包括多个温度检测器,每个温度检测器设置在相对于热定影单元的加热辊的不同位置。 图像形成装置还包括用于检测加热辊的温度的温度检测器和用于通过将与设备的安装方向相对应的设定温度与由该设备的安装方向相对应的温度进行比较来控制加热辊的定影温度的控制电路 温度检测器 因此,无论装置的安装方向如何,都可以精确地控制加热辊的温度。
    • 97. 发明授权
    • Semiconductor integrated circuit for processing image data
    • 用于处理图像数据的半导体集成电路
    • US5673422A
    • 1997-09-30
    • US376618
    • 1995-01-23
    • Hiroyuki KawaiYoshitsugu InoueHisashi Nakamura
    • Hiroyuki KawaiYoshitsugu InoueHisashi Nakamura
    • G09G5/00G06F12/08G06T1/20G06T3/00G06T11/00G06T15/10G09G5/39G09G5/393G11C11/401G06F15/76
    • G06T1/20G09G5/393
    • A frame buffer memory includes a main memory of a DRAM, a cache memory of a SRAM, a first transfer bus for transferring data of 256 bits, for example, between the main memory and the cache memory, a pixel processing unit for carrying out a predetermined operational process according to data provided from the cache memory and externally applied data, a compare unit for comparing the data provided from the cache memory with externally applied data, a transfer bus for transferring data from the cache memory to the pixel processing unit and the compare unit, a transfer bus for transferring resultant data from the pixel processing unit to the cache memory, and a serial access memory for storing data read out from the main memory and providing the stored data serially to an outside world. According to the structure, an .alpha.-blend process, a raster operation, a Z compare process and the like required for graphics can be carried out at high speed with flexibility.
    • 帧缓冲存储器包括DRAM的主存储器,SRAM的高速缓冲存储器,用于传送256位数据的第一传输总线,例如主存储器和高速缓冲存储器之间的像素处理单元,用于执行 根据从高速缓冲存储器提供的数据和外部应用数据的预定操作处理,用于将从高速缓存存储器提供的数据与外部应用数据进行比较的比较单元,用于将数据从高速缓冲存储器传送到像素处理单元的传输总线,以及 比较单元,用于将结果数据从像素处理单元传送到高速缓冲存储器的传送总线,以及用于存储从主存储器读出的数据的串行存取存储器,并将所存储的数据串行地提供给外部世界。 根据该结构,图形所需的alpha混合处理,光栅操作,Z比较处理等可以灵活地高速地进行。
    • 98. 发明授权
    • Program control operation to execute a loop processing not immediately
following a loop instruction
    • 程序控制操作执行循环指令后不循环处理
    • US5657485A
    • 1997-08-12
    • US509940
    • 1995-08-01
    • Robert StreitenbergerHiroyuki KawaiYoshitsugu Inoue
    • Robert StreitenbergerHiroyuki KawaiYoshitsugu Inoue
    • G06F9/32
    • G06F9/325G06F9/30065
    • The present invention is directed to a program control unit which enables a program control to achieve an efficient loop processing which does not immediately follow a loop instruction and which contains a start address and end address. In the program control unit, the start address and end address of a loop processing are stored in a register (start) (7) and a register (end) (8), respectively, in synchronization with a clock t1. The stored data "start" of the register (7) and the stored data "end" of the register (8) are inputted to a comparator (12) and a comparator (11), respectively. The comparator (12) compares the output from a delay program counter (18) with the data "start", and sets a flag f start when the comparison result indicates agreement and otherwise resets it. The comparator (11) compares the output from a delay program counter (18) with the data "end", and sets a flag f end when the comparison result indicates agreement and otherwise resets it.
    • 本发明涉及一种程序控制单元,其使得程序控制能够实现不立即循环指令并且包含开始地址和结束地址的有效的循环处理。 在程序控制单元中,循环处理的起始地址和结束地址分别与时钟t1同步地存储在寄存器(起始)(7)和寄存器(结束)(8)中。 寄存器(7)的存储数据“开始”和寄存器(8)的存储数据“结束”分别输入到比较器(12)和比较器(11)。 比较器(12)将来自延迟程序计数器(18)的输出与数据“开始”进行比较,并且当比较结果指示一致时设置标志f开始,否则将其复位。 比较器(11)将来自延迟程序计数器(18)的输出与数据“结束”进行比较,并且当比较结果表示协议时设定标志f结束,否则将其复位。
    • 99. 发明授权
    • Direct memory access control device and method in a multiprocessor
system accessing local and shared memory
    • 直接存储器访问控制设备和方法在多处理器系统中访问本地和共享内存
    • US5584010A
    • 1996-12-10
    • US358670
    • 1994-12-19
    • Hiroyuki KawaiHideyuki Terane
    • Hiroyuki KawaiHideyuki Terane
    • G06F15/16G06F13/28G06F13/38G06F15/163G06F13/40G06F12/08G06F13/36
    • G06F13/28
    • A direct memory access control device is used in a multiprocessor system having a plurality of digital data processors and an external common memory connected in common to those digital data processors through a first bus. In the case of transferring data in a direct memory access mode between processors, the transfer of data between the processors is effected by the control device through a second data bus provided in common to the plurality of digital data processors separately from the first bus. Thus, data can be transferred directly in a direct memory access mode between the processors without using the external memory and high-speed transfer can be realized. In addition, the control device comprises registers for storing the status bits of each digital data processor, such as direct memory access request and acceptance signals, corresponding to each digital data processor. Request and acceptance of direct memory access and transfer of data are effected by monitoring the contents of those registers.
    • 直接存储器访问控制装置用于具有多个数字数据处理器和通过第一总线与这些数字数据处理器共同连接的外部公共存储器的多处理器系统。 在处理器之间以直接存储器访问模式传送数据的情况下,处理器之间的数据传输由控制设备通过与第一总线分离地与多个数字数据处理器共同提供的第二数据总线来实现。 因此,可以在处理器之间的直接存储器访问模式中直接传送数据,而不使用外部存储器,并且可以实现高速传输。 此外,控制装置包括用于存储每个数字数据处理器的状态位的寄存器,例如对应于每个数字数据处理器的直接存储器访问请求和接收信号。 通过监视这些寄存器的内容来实现对存储器直接访问和数据传输的请求和接受。