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    NCMOS - a high performance logic circuit
    141.
    发明授权
    NCMOS - a high performance logic circuit 失效
    NCMOS - 高性能逻辑电路

    公开(公告)号：US5426383A

    公开(公告)日：1995-06-20

    申请号：US229861

    申请日：1994-04-19

    Applicant: Rajendra Kumar

    Inventor： Rajendra Kumar

    IPC: H01L21/8238 ,  H01L27/092 ,  H03K19/0944 ,  H03K19/00

    CPC classification number: H03K19/09441

    Abstract: A family of high performance logic circuits. Each circuit uses one or more NMOS transistors characterized by controlled threshold voltages. The threshold voltage is determined by changing the doping profile of the gate of that transistor. When each circuit is at its stable state, the current through its controlled-threshold NMOS transistor is limited by a characteristic leakage current of that transistor if its input signal is at a low logic level. The invention is demonstrated in an inverter, a ring-oscillator, an NAND circuit, an NOR circuit, and tri-state logic circuits.

    Abstract translation: 一系列高性能逻辑电路。 每个电路使用一个或多个以受控阈值电压为特征的NMOS晶体管。 通过改变该晶体管的栅极的掺杂分布来确定阈值电压。 当每个电路处于其稳定状态时，如果晶体管的输入信号处于低逻辑电平，则通过其受控阈值NMOS晶体管的电流受到该晶体管的特性泄漏电流的限制。 本发明在逆变器，环形振荡器，NAND电路，NOR电路和三态逻辑电路中得到证明。

    Integrated portable device for point of sale transactions
    142.
    发明授权
    Integrated portable device for point of sale transactions 失效
    集成便携式设备，用于销售点交易

    公开(公告)号：US5386106A

    公开(公告)日：1995-01-31

    申请号：US213489

    申请日：1994-03-15

    Applicant: Rajendra Kumar

    Inventor： Rajendra Kumar

    IPC: G06K7/00 ,  G06K7/10 ,  G06K17/00 ,  G07F7/02 ,  G07F7/10 ,  G07G1/00 ,  G07G1/12 ,  G07G5/00

    CPC classification number: G07G5/00 ,  G06K17/0022 ,  G06K7/10881 ,  G06K7/109 ,  G06Q20/341 ,  G06Q20/343 ,  G07F7/02 ,  G07F7/0886 ,  G07F7/1008 ,  G07G1/0036 ,  G07G1/0045 ,  G07G1/0081

    Abstract: A handheld, portable device (10) for processing point of sale transactions includes a housing (20), a magnetic card reader (40) for reading credit card information, the reader (40) carried within the housing (20) substantially adjacent to the first end (23) of the housing (20), a numeric keyboard (50) and an alphabetic keyboard (60) for entering customer information, and a barcode scanner (70) for scanning product identification information, the barcode scanner (70) carried within the housing (20) substantially adjacent to a second end (24) of the housing (20). Also included is a display (80) for displaying selected information, a printer (90) for printing a customer receipt, a communications assembly (110) for furnishing the information needed to obtain transaction approval, and a processor (130) for receiving the information, and controlling the display (80), the printer (90) and the communications assembly (110). Device (10) furnishes all functions necessary to facilitate and complete a point of sale credit card transaction. The housing (20) configuration allows handsfree operation for most functions. The arrangement of components within device (10) provides a uniform distribution of weight and makes supporting device (10) with one hand comfortable and relatively effortless.

    Abstract translation: 用于处理销售点交易的手持式便携式设备（10）包括：外壳（20），用于读取信用卡信息的磁卡读取器（40），所述读取器（40）承载在所述壳体（20）内， 壳体（20）的第一端（23），用于输入客户信息的数字键盘（50）和字母键盘（60）以及用于扫描产品识别信息的条形码扫描器（70），携带有条形码扫描仪 在基本上邻近壳体（20）的第二端（24）的壳体（20）内。 还包括用于显示所选择的信息的显示器（80），用于打印客户接收的打印机（90），用于提供获得交易批准所需的信息的通信组件（110），以及用于接收信息的处理器 ，并且控制显示器（80），打印机（90）和通信组件（110）。 设备（10）提供便利和完成销售点信用卡交易所需的所有功能。 外壳（20）配置允许大多数功能的免提操作。 装置（10）内的组件的布置提供了均匀的重量分布，并且使得一只手的支撑装置（10）舒适且相对轻松。

    Headphone assembly
    143.
    发明授权
    Headphone assembly 失效
    耳机装配

    公开(公告)号：US5357585A

    公开(公告)日：1994-10-18

    申请号：US88685

    申请日：1993-07-09

    Applicant: Rajendra Kumar

    Inventor： Rajendra Kumar

    IPC: H04R1/10 ,  H04R5/033 ,  H04R25/00

    CPC classification number: H04R1/1008 ,  H04R1/1025 ,  H04R1/1075 ,  H04R2420/07 ,  H04R5/033 ,  H04R5/0335

    Abstract: A headphone assembly adapted for engaging a user's head includes an adjustable headband having first and second ends. A right ear piece is attached to a first end, and a left ear piece is attached to a second end of the headband. Each ear piece is substantially semi-circular shaped, and has a substantially inverted U-shaped shell having an inverted U-shaped inner wall. The U-shaped inner wall defines an acoustic cavity having a bottom end opening for receiving approximately the top half of the user's ear. A rear wall of the acoustic cavity has a number of holes extending therethrough behind which a speaker is mounted. An inverted U-shaped chamber is provided about the acoustic cavity and the outer perimeter of the ear piece. The right ear piece chamber will hold the electronic circuitry necessary for a cordless receiver. The left ear piece has a similar chamber which accepts a power board for holding a plurality of batteries which provides the power source for the electronic circuitry mounted in the opposite ear piece. A dome-shaped cover plate covers each of the speaker elements and the respective power board and circuit board, to create a cordless headphone wherein the user's ear is only partially enclosed by the ear piece. Foam pads mounted on the ear pieces contact the user's head to provide comfort to the user.

    Abstract translation: 适于接合用户头部的耳机组件包括具有第一端和第二端的可调节头带。 右耳片附接到第一端，并且左耳片附接到头带的第二端。 每个耳片基本上是半圆形的，并且具有大致倒U形的外壳，其具有倒置的U形内壁。 U形内壁限定了具有用于接收用户耳朵的大约上半部分的底端开口的声腔。 声腔的后壁具有延伸穿过其中的多个孔，扬声器安装在该后面。 围绕声腔和耳片的外周设置倒U形腔。 右耳罩室将保持无绳接收器所需的电子电路。 左耳片具有类似的室，其接受用于保持多个电池的电源板，该电池为安装在相对的耳朵中的电子电路提供电源。 一个圆顶形盖板覆盖每个扬声器元件和相应的电源板和电路板，以产生一个无绳耳机，其中用户的耳朵仅被耳机部分地包围。 安装在耳片上的泡沫垫接触用户的头部，以向用户提供舒适感。

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