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公开(公告)号：US3781813A
公开(公告)日：1973-12-25
申请号：US3781813D
申请日：1971-06-30
Applicant: IBM
Inventor： MAY F
IPC: B41J5/44 , G11B27/032 , G11B27/036 , G06F3/12
CPC classification number: B41J5/44 , G11B27/032 , G11B27/036
Abstract: A typewriter is electronically connected to a multi-page buffer which is a dynamic electronic shift register. System control logic is provided to allow the operator to type codes corresponding to characters as well as certain control codes into the buffer for later print-out. In addition, the system control logic is operable to allow the operator to insert characters into and delete characters from the buffer for editing and correction purposes. The multi-page buffer is also in electronic association with a tape cassette such that the operator, by depressing a page store button, can store the contents of the buffer onto the tape of the tape cassette or read pages from the tape into the buffer. Means are provided for automatically keeping track of the location of the pages of the various jobs. Thus, a machine log is utilized which is recorded at the beginning of the cassette tape which includes the location on tape of each of the pages of a particular job and the next available block which can be utilized for storing a page. Upon depressing the store button to store a page, the machine log is queried and a decision is made to either store the page on an existing block allocated for this job, in which case a command is given to the tape to access that block, or it may be determined that a new block is required for this page. In this case the address of the next available block is determined and is inserted in the machine log static shift register (SSR) and the cassette is automatically driven to that block. At the beginning of a recording operation the machine log stored on the tape is loaded into an electronic static shift register (SSR) under control of the system control logic. Through control of the data flow of the static shift register which holds the machine log, the addresses of the pages associated with a particular job can be stored and deleted to correctly reflect the location of the pages associated with the job. It is the output from the machine log stored in the static shift register which is used to control positioning of the cassette tape to the next available block and the output from the machine log stored in the static shift register is also utilized to update the machine log stored on the tape after completion of a job. Thus, the contents of the machine log stored on the tape, in the event of power failure which would destroy the contents of both the multi-page buffer and the SSR are current up to the last completed job. With the above systems configuration the operator need not be concerned with storage locations on the cassette but instead all storing and reading onto and from the tape is done automatically under control of the systems control logic acting in conjunction with the machine log such that the serial tape is made to perform as a random access store.
Abstract translation: 打字机电子连接到作为动态电子移位寄存器的多页缓冲器。 提供系统控制逻辑以允许操作者将对应于字符的代码以及某些控制代码输入到缓冲器中用于稍后的打印输出。 此外，系统控制逻辑可操作以允许操作者将字符插入到缓冲器中并从其中删除字符以进行编辑和校正目的。 多页缓冲器还与磁带盒电子联系，使得操作者通过按下页面存储按钮可以将缓冲器的内容存储在磁带盒的磁带上或从磁带读取页面到缓冲器中。 提供了用于自动跟踪各种作业的页面的位置的手段。 因此，使用记录在盒式磁带的开始处的机器日志，其包括特定作业的每个页面的磁带上的位置和可用于存储页面的下一个可用块。 在按下存储按钮以存储页面时，查询机器日志，并且作出决定以将页面存储在为该作业分配的现有块上，在这种情况下给予磁带访问该块的命令，或 可以确定该页面需要新的块。 在这种情况下，确定下一个可用块的地址并将其插入到机器对数静态移位寄存器（SSR）中，并且磁带自动驱动到该块。 在记录操作开始时，存储在磁带上的机器日志在系统控制逻辑的控制下被加载到电子静态移位寄存器（SSR）中。
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Patent Agency Ranking
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公开(公告)号：NO128464B
公开(公告)日：1973-11-19
申请号：NO507368
申请日：1968-12-18
Applicant: IBM
Inventor： CLANCY D , WILSON HOBGOOD G , MAY F
IPC: G06K17/00
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公开(公告)号：BR7204310D0
公开(公告)日：1973-06-12
申请号：BR431072
申请日：1972-06-30
Applicant: IBM
Inventor： MAY F
IPC: B41J5/44 , G11B27/032 , G11B27/036 , G06K3/00
Abstract: A typewriter is electronically connected to a multi-page buffer which is a dynamic electronic shift register. System control logic is provided to allow the operator to type codes corresponding to characters as well as certain control codes into the buffer for later print-out. In addition, the system control logic is operable to allow the operator to insert characters into and delete characters from the buffer for editing and correction purposes. The multi-page buffer is also in electronic association with a tape cassette such that the operator, by depressing a page store button, can store the contents of the buffer onto the tape of the tape cassette or read pages from the tape into the buffer. Means are provided for automatically keeping track of the location of the pages of the various jobs. Thus, a machine log is utilized which is recorded at the beginning of the cassette tape which includes the location on tape of each of the pages of a particular job and the next available block which can be utilized for storing a page. Upon depressing the store button to store a page, the machine log is queried and a decision is made to either store the page on an existing block allocated for this job, in which case a command is given to the tape to access that block, or it may be determined that a new block is required for this page. In this case the address of the next available block is determined and is inserted in the machine log static shift register (SSR) and the cassette is automatically driven to that block. At the beginning of a recording operation the machine log stored on the tape is loaded into an electronic static shift register (SSR) under control of the system control logic.
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