公开(公告)号：US3956740A

公开(公告)日：1976-05-11

申请号：US528441

申请日：1974-11-29

申请人： Michael Dale Jones ,  David Alan Johnson ,  Carl Taylor Wright ,  William Sherman Bell, Jr.

发明人： Michael Dale Jones ,  David Alan Johnson ,  Carl Taylor Wright ,  William Sherman Bell, Jr.

IPC分类号： G06F1/28 ,  G06F1/30 ,  G06F3/023 ,  G06F13/00 ,  G06F13/04 ,  G11B5/00 ,  G11B15/18

CPC分类号： G06F1/30 ,  G06F1/28 ,  G06F3/0232

摘要： An improved portable data entry machine is disclosed, wherein data may be keyed, viewed for accuracy, recorded on magnetic tape, recalled from magnetic tape, and telephonically transmitted for data processing. Improvements include a search feature to locate previously recorded data, an automatically controlled power switching unit to prolong the times that batteries may be used prior to recharging, microcomputer controlled circuitry to prevent attempted data entry under low-battery conditions, an electronic shutdown to prevent cell reversal, a voltage reference technique to minimize the power drain from the batteries, a unique mechanism and circuitry to preclude the inadvertent destruction of data, a low cost modem for communicating entered data to a remote location, an automatic interlock for the tape compartment, a highly effective display technique, a novel high voltage power supply, and an out-of-sequence detector.

摘要翻译： 公开了一种改进的便携式数据输入机，其中可以键入数据，准确地查看，记录在磁带上，从磁带回收，并进行电话发送以进行数据处理。 改进包括用于定位先前记录的数据的搜索功能，自动控制的电源开关单元，以延长在充电之前可以使用电池的时间，微电脑控制的电路以防止在低电量条件下尝试数据输入，电​​子关闭以防止电池 反转，电压参考技术以最小化来自电池的功率消耗，用于排除数据的无意破坏的独特机制和电路，用于将输入的数据传送到远程位置的低成本调制解调器，用于带隔间的自动互锁， 高效的显示技术，新颖的高压电源和失序检测器。