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公开(公告)号：US4800256A
公开(公告)日：1989-01-24
申请号：US938930
申请日：1986-12-08
CPC分类号： G06K7/10871 , G02B26/106
摘要： An improved holographic scanner includes circuitry for adjusting the frequency with which an analog photodetector signal is sampled in accordance with the focal length of the scanning beam produced by the active holographic facet. Two embodiments are shown. In one embodiment, facet-edge signals are used to track the facets. A processor retrieves a predetermined frequency scaling factor appropriate for each facet. In the other embodiment, a holographic disk carries an auxiliary data track. The track has timing indicia with spatial frequencies dependent upon the focal length of the adjacent facet. The timing indicia are used to control the output of a voltage controlled oscillator in a circuit including a phase locked loop.
摘要翻译： 改进的全息扫描器包括用于根据由有源全息小面产生的扫描光束的焦距调整模拟光电检测器信号被采样的频率的电路。 示出了两个实施例。 在一个实施例中，小面边缘信号用于跟踪小平面。 处理器检索适合于每个小面的预定频率缩放因子。 在另一个实施例中，全息盘携带辅助数据轨道。 轨道具有定时标记，其空间频率取决于相邻小面的焦距。 定时指示用于控制包括锁相环的电路中的压控振荡器的输出。
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公开(公告)号：US4728789A
公开(公告)日：1988-03-01
申请号：US938929
申请日：1986-12-08
CPC分类号： G06K7/10871 , G02B26/106
摘要： A fixed position optical scanner with a multi-faceted holographic disk includes circuitry for adjusting the lockout voltage as a function of the focal length of the active facet. The disk position is tracked to identify the active facet. A facet identifying signal is used to address a lockout table in processor memory. A digital value retrieved from the lockout table is converted to analog form and applied through a resistor to a voltage divider in the threshold circuit. The voltage divider scales down a white peak following voltage and compares it to a black peak following voltage. The facet-dependent lockout voltage biases the junction of the voltage divider to vary the effective lockout voltage as a function of the focal length of the currently active facet.
摘要翻译： 具有多面全息光盘的固定位置光学扫描器包括用于根据活动刻面的焦距调整锁定电压的电路。 跟踪磁盘位置以识别活动构面。 面识别信号用于寻址处理器存储器中的锁定表。 从锁定表检索的数字值被转换为模拟形式，并通过电阻器施加到阈值电路中的分压器。 分压器按照电压下降白色峰值，并将其与电压后的黑色峰值进行比较。 面依赖的锁定电压偏压分压器的结，以根据当前活动小面的焦距来改变有效闭锁电压。
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3.发明授权Optical scanner having multiple, simultaneous scan lines with different focal lengths 失效光学扫描仪具有多个具有不同焦距的同时扫描线
公开(公告)号：US4591242A
公开(公告)日：1986-05-27
申请号：US579634
申请日：1984-02-13
CPC分类号： G06K7/10871 , G06K2207/1013 , G06K2207/1018
摘要： An optical scanner uses frequency modulation and detection techniques to produce and utilize multiple, simultaneous scan patterns in which corresponding scan lines have different focal lengths. Two or more solid state lasers are modulated at unique frequencies. The frequency modulated output beams pass through different combinations of focusing lenses and are deflected by a single beam deflecting apparatus. Light reflected from any scanned object is detected. The resulting multi-frequency signal is applied to a plurality of bandpass filters to separate the returned signal into a plurality of separately decodable signals.
摘要翻译： 光学扫描器使用频率调制和检测技术来产生和利用多个同时的扫描图案，其中对应的扫描线具有不同的焦距。 两个或多个固态激光器以独特的频率进行调制。 频率调制输出光束通过聚焦透镜的不同组合，并被单个光束偏转装置偏转。 检测到从任何扫描对象反射的光。 所产生的多频信号被施加到多个带通滤波器，以将返回的信号分离成多个单独可解码的信号。
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4.发明授权Terminal device having closed chamber communications between functional units 失效在功能单元之间具有闭合室通信的终端设备
公开(公告)号：US4499608A
公开(公告)日：1985-02-12
申请号：US457531
申请日：1983-01-12
CPC分类号： H04B10/801
摘要： A data processing terminal device includes a substantially enclosed optical chamber which serves as a wireless communication "bus" between pluggable functional units such as a controller unit, printer units, display units, etc. Each functional unit includes a transducer having an emitter component for injecting optical energy into the cavity and a detector component for sensing optical energy injected by transducers of other functional units. The energy distribution within the cavity is shaped by elliptic parabolic reflectors, preferably molded integrally with the floor of the chamber structure.
摘要翻译： 一种数据处理终端装置，包括一个基本上封闭的光学室，其用作诸如控制器单元，打印机单元，显示单元等的可插拔功能单元之间的无线通信“总线”。每个功能单元包括具有用于注入 进入腔的光能和用于感测由其他功能单元的换能器注入的光能的检测器部件。 空腔内的能量分布由椭圆形抛物面反射器形成，优选地与室结构的底板一体地模制。
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公开(公告)号：US20080295598A1
公开(公告)日：2008-12-04
申请号：US12193787
申请日：2008-08-19
IPC分类号： G01N29/04
CPC分类号： G01B17/02 , B41J11/0075 , B41J15/02 , B65H26/08 , B65H2553/30
摘要： A system for sensing paper on a paper roll includes an ultrasonic transducer positioned to be in contact with an outer surface of the paper roll; a transmitter circuit in communication with the ultrasonic transducer, the transmitter circuit providing a transmit signal to the ultrasonic transducer, the ultrasonic transducer generating an ultrasonic signal in response to the transmit signal; a receiver circuit in communication with the ultrasonic transducer, the receiver circuit providing a received signal indicative of an ultrasonic return echo from the paper roll, the ultrasonic return echo resulting from the ultrasonic signal interacting with the paper roll; and a processor circuit, in communication with the transmitter circuit and the receiver circuit, that determines an amount of paper remaining on the paper roll in response to the transmit signal and the receive signal, the processor providing an output signal when the amount of paper remaining falls below a threshold.
摘要翻译： 用于感测纸卷上的纸的系统包括定位成与纸卷的外表面接触的超声换能器; 与所述超声波换能器通信的发射机电路，所述发射机电路向所述超声换能器提供发射信号，所述超声波换能器响应于所述发射信号产生超声波信号; 与所述超声波换能器通信的接收器电路，所述接收器电路提供表示来自所述纸卷的超声波返回回波的接收信号，所述超声波返回回波由所述超声波信号与所述纸卷相互作用; 以及与所述发射机电路和所述接收机电路通信的处理器电路，其响应于所述发射信号和所述接收信号来确定纸卷上剩余的纸张量，所述处理器在剩余纸张量时提供输出信号 低于阈值。
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公开(公告)号：US07669476B2
公开(公告)日：2010-03-02
申请号：US12193787
申请日：2008-08-19
IPC分类号： G01N3/32
CPC分类号： G01B17/02 , B41J11/0075 , B41J15/02 , B65H26/08 , B65H2553/30
摘要： A system for sensing paper on a paper roll includes an ultrasonic transducer positioned to be in contact with an outer surface of the paper roll; a transmitter circuit in communication with the ultrasonic transducer, the transmitter circuit providing a transmit signal to the ultrasonic transducer, the ultrasonic transducer generating an ultrasonic signal in response to the transmit signal; a receiver circuit in communication with the ultrasonic transducer, the receiver circuit providing a received signal indicative of an ultrasonic return echo from the paper roll, the ultrasonic return echo resulting from the ultrasonic signal interacting with the paper roll; and a processor circuit, in communication with the transmitter circuit and the receiver circuit, that determines an amount of paper remaining on the paper roll in response to the transmit signal and the receive signal, the processor providing an output signal when the amount of paper remaining falls below a threshold.
摘要翻译： 用于感测纸卷上的纸的系统包括定位成与纸卷的外表面接触的超声换能器; 与所述超声波换能器通信的发射机电路，所述发射机电路向所述超声换能器提供发射信号，所述超声波换能器响应于所述发射信号产生超声波信号; 与所述超声波换能器通信的接收器电路，所述接收器电路提供表示来自所述纸卷的超声波返回回波的接收信号，所述超声波返回回波由所述超声波信号与所述纸卷相互作用; 以及与所述发射机电路和所述接收机电路通信的处理器电路，其响应于所述发射信号和所述接收信号来确定纸卷上剩余的纸张量，所述处理器在剩余纸张量时提供输出信号 低于阈值。
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公开(公告)号：US20080059880A1
公开(公告)日：2008-03-06
申请号：US11464916
申请日：2006-08-16
申请人： Robert T. Cato , Thomas J. Sluchak
发明人： Robert T. Cato , Thomas J. Sluchak
IPC分类号： G06F3/00
CPC分类号： B62B3/1424 , B62B3/1408 , B62B3/1416 , G06F21/84 , G06F2221/2149
摘要： A method for controlling a display device, such as, for example, the display device mounted on a shopping cart, the shopping cart having a wheeled base and a basket portion in connection with the wheeled base and a handle in connection with the wheeled base, the method comprising: allowing a user to enter information at and obtain information from the display device; and providing a locking mechanism located on or implemented within the device for permitting the user to activate or deactivate the display device in order to prevent unauthorized access.
摘要翻译： 一种用于控制显示装置的方法，例如安装在购物车上的显示装置，具有轮式底座的购物车和与轮式底座相连的筐部分和与轮式底座相连的把手， 该方法包括：允许用户在显示设备上输入信息并从显示设备获取信息; 以及提供位于设备上或实现在设备内的锁定机构，以允许用户激活或停用显示设备，以防止未经授权的访问。
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公开(公告)号：US5123029A
公开(公告)日：1992-06-16
申请号：US718525
申请日：1991-06-21
申请人： David F. Bantz , Robert T. Cato , Chia-chi Huang
发明人： David F. Bantz , Robert T. Cato , Chia-chi Huang
IPC分类号： H04B1/713 , H04B7/26 , H04J3/00 , H04L5/22 , H04L12/28 , H04L12/407 , H04L12/56 , H04W74/02 , H04W74/04 , H04W74/08
CPC分类号： H04W74/02 , H04B1/713 , H04L12/40136 , H04L12/4035 , H04L12/407
摘要： A hybrid of controlled access and random access schemes using frequency hopping spread spectrum communication techniques is implemented in an indoor digital data radio communication system between mobile stations and a computer system. A hop in the frequency hopping spread spectrum communication system is subdivided into two intervals so that different media-access protocols can be used in each interval. The protocol uses a centralized control scheme in one interval and a decentralized scheme in the other, and the intervals may be varied depending on the load of the system.
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公开(公告)号：US07464594B2
公开(公告)日：2008-12-16
申请号：US11534056
申请日：2006-09-21
IPC分类号： G01N3/32
CPC分类号： G01B17/02 , B41J11/0075 , B41J15/02 , B65H26/08 , B65H2553/30
摘要： A method for sensing paper on a paper roll is disclosed. The method comprises transmitting an ultrasonic signal into the paper roll and detecting an ultrasonic return echo transmit signal from the paper roll, the ultrasonic return echo transmit signal resulting from the ultrasonic signal interacting with the paper roll. Moreover, the method comprises determining an amount of paper remaining on the paper roll in response to the ultrasonic return echo transmit signal. Furthermore, the method may comprise indicating that the paper roll needs to be replaced in response to determining the amount of paper remaining on the paper roll.
摘要翻译： 公开了一种在纸卷上检测纸张的方法。 该方法包括：将超声波信号传送到纸卷中，并检测来自纸卷的超声波返回回波发射信号，超声回波发射信号是由超声信号与纸卷相互作用产生的。 此外，该方法包括响应于超声回波回波发射信号来确定纸卷上剩余的纸张量。 此外，该方法可以包括指示需要更换纸卷以响应于确定纸卷上剩余的纸张的量。
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公开(公告)号：US20080072672A1
公开(公告)日：2008-03-27
申请号：US11534056
申请日：2006-09-21
IPC分类号： G01N29/04
CPC分类号： G01B17/02 , B41J11/0075 , B41J15/02 , B65H26/08 , B65H2553/30
摘要： A system includes an ultrasonic transducer positioned to be in contact with the outer surface of a paper roll. The system further includes a transmitter circuit and a receiver circuit in communication with the ultrasonic transducer. The transmitter circuit provides a transmit signal to the ultrasonic transducer for generating an ultrasonic signal, which is transmitted into the paper roll. The receiver circuit provides a received signal indicative of an ultrasonic return echo from the paper roll. The ultrasonic return echo resulting from the ultrasonic signal interacting with the paper roll. The system also includes a processor circuit for determining an amount (length or diameter of roll) of paper remaining on the paper roll in response to the transmit signal and the receive signal. The processor provides an output signal when the amount of paper remaining falls below a threshold. A method of sensing paper on a paper roll is also presented. The method includes transmitting an ultrasonic signal into a paper roll and detecting an ultrasonic return echo from the paper roll. The ultrasonic return echo resulting from the ultrasonic signal interacting with the paper roll. The method further includes determining an amount of paper remaining on the paper roll in response to the ultrasonic return echo transmit signal.
摘要翻译： 系统包括定位成与纸卷的外表面接触的超声换能器。 该系统还包括与超声波换能器通信的发射机电路和接收机电路。 发射机电路向超声波换能器提供发射信号，用于产生传输到纸卷中的超声波信号。 接收器电路提供指示来自纸卷的超声回波回波的接收信号。 由超声波信号产生的超声回波回波与纸卷相互作用。 该系统还包括处理器电路，用于响应于发送信号和接收信号确定纸卷上残留的纸张的量（卷的长度或直径）。 当纸张剩余量低于阈值时，处理器提供输出信号。 还提出了在纸卷上感测纸张的方法。 该方法包括将超声波信号发送到纸卷中并从纸卷检测超声回波回波。 由超声波信号产生的超声回波回波与纸卷相互作用。 该方法还包括响应于超声回波回波发射信号来确定纸卷上剩余的纸张量。
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