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    • 8. 发明授权
    • Photo printer having a host computer assist function and method of
controlling the same
    • 具有主机辅助功能的照相打印机及其控制方法
    • US4989163A
    • 1991-01-29
    • US225782
    • 1988-07-29
    • Yoshio KawamataSyoichi ItoKatsufumi Takagishi
    • Yoshio KawamataSyoichi ItoKatsufumi Takagishi
    • B41J2/44B41J5/30G06F3/12G06K15/00G06K15/12H04N1/21
    • G06K15/128G06F3/1295G06K15/00G06K2215/0005G06K2215/0017G06K2215/0082
    • A photo printer system comprises a magnetic storage for storing a print data sent from a host computer, a bit map memory for storing a print dot data, and a printer engine for printing the contents of the bit map memory. The system includes a program which operates on the magnetic storage to serve as an external storage for the host computer and on the bit map memory to serve as a cache memory in response to a data read/write command issued by the host computer, and a CPU which controls the execution of the program. At least in a non-print process mode, the system forms a data path so that the host computer can access to the bit map memory and magnetic storage so as to have a bidirectional data read/write operation. In another mode, the system forms a data path so that image data picked up with an image scanner is saved directly in the bit map memory and the image data is sent to the host computer by request.
    • 照片打印机系统包括用于存储从主机发送的打印数据的磁存储器,用于存储打印点数据的位图存储器和用于打印位图存储器的内容的打印机引擎。 该系统包括一个程序,该程序在磁存储器上作为主计算机的外部存储器和位图存储器响应于主机发出的数据读/写命令而用作高速缓冲存储器,以及 控制程序执行的CPU。 至少在非打印处理模式下,系统形成数据路径,使得主计算机可以访问位图存储器和磁存储器以便具有双向数据读/写操作。 在另一模式中,系统形成数据路径,使得用图像扫描仪拾取的图像数据直接保存在位图存储器中,并且图像数据通过请求发送到主计算机。
    • 9. 发明授权
    • Message buffer with improved escape sequence and automatic document
marking
    • 消息缓冲区具有改进的转义序列和自动文档标记
    • US4852045A
    • 1989-07-25
    • US244524
    • 1988-09-09
    • Douglas R. KraulStuart A. Cox
    • Douglas R. KraulStuart A. Cox
    • G06F3/12
    • G06F3/1295
    • An improved message buffer for transferring data between two or more digital data devices is disclosed. A dual universal asynchronous receiver-transmitter (13) provides bidirectional data flow to two bidirectional ports (B and C) through two interface circuits (14 and 15). A peripheral interface adapter (16) and a third interface circuit (17) provide for sending data to an output port (A) in a serial or a parallel data format, and provides access to a real time clock (20), an electrically erasable programmable read only memory (41), a bank of switches (36), and a bank of display indicators (37). A read only memory (11) provides operating instructions to a control unit (10). The control unit (10) reads data and handshake signals from the two bidirectional ports (B and C), stores the data in a random access memory (12), reads the data from the memory (12) and sends it to the output port (A). The control unit (10) is responsive to a predetermined period of no data from the bidirectional ports (B and C) for automatically marking the beginning and end of a document. The control unit (10) is also responsive to a minimum and a maximum period of a break signal followed by a first predetermined character at a predetermined set of data format parameters for escaping from an on-line mode of operation to a command mode.
    • 公开了一种用于在两个或多个数字数据设备之间传送数据的改进的消息缓冲器。 双通用异步接收机 - 发射机(13)通过两个接口电路(14和15)向两个双向端口(B和C)提供双向数据流。 外围接口适配器(16)和第三接口电路(17)提供以串行或并行数据格式向输出端口(A)发送数据,并提供对实时时钟(20)的访问,电可擦除 可编程只读存储器(41),一组开关(36)和一组显示指示器(37)。 只读存储器(11)向操作单元(10)提供操作指令。 控制单元(10)从两个双向端口(B和C)读取数据和握手信号,将数据存储在随机存取存储器(12)中,从存储器(12)读取数据并将其发送到输出端口 (一个)。 控制单元(10)响应来自双向端口(B和C)的无数据的预定周期,用于自动标记文档的开始和结束。 控制单元(10)还响应于在预定的一组数据格式参数上的中断信号的后面是第一预定字符的最小和最大周期,用于从在线操作模式转移到命令模式。
    • 10. 发明授权
    • Intelligent stand-alone printfile buffer with paging control
    • 具有分页控制功能的智能独立printfile缓冲区
    • US4630198A
    • 1986-12-16
    • US582170
    • 1984-02-21
    • Houng I-Yuan
    • Houng I-Yuan
    • G06F3/12G06F3/00
    • G06F3/1295
    • An intelligent, stand alone print buffer having switch-selectable series and parallel input and output ports. Data transfers between the input and output ports occur under microprocessor control. Control panel switches initiate control functions such as clearing the buffer memory, starting a print cycle, holding further input from the input port, and pausing further output to the output port. Page skipping and page reprinting are controlled by the microprocessor which scans the data stored in the buffer's internal memory to locate page boundries in accordance with operator entered page definition data.
    • 具有开关可选串联和并行输入和输出端口的智能独立打印缓冲器。 输入和输出端口之间的数据传输发生在微处理器控制下。 控制面板开关启动控制功能,例如清除缓冲存储器,开始打印循环,从输入端口保留进一步的输入,并暂停进一步输出到输出端口。 页面跳过和页面重新打印由微处理器控制,微处理器扫描存储在缓冲器内部存储器中的数据,以根据操作员输入的页面定义数据来定位页面边界。