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    • 2. 发明申请
    • SPEED AND DIRECTION SENSING CIRCUIT
    • 速度和方向感应电路
    • WO1982003691A1
    • 1982-10-28
    • PCT/US1979001088
    • 1979-12-13
    • RENDER MICHAEL LARMSTRONG JOHN T JR
    • G01P03/42
    • G01P13/045
    • A speed and direction detector for rotating bodies such as gears (10) including a pair of spaced sensors (14) mounted adjacent the gear teeth (12) to develop phase-shifted alternating signal waveforms, and a decoder (20) to develop a sequence of output signal conditions (5-53) depending upon the relation between the altern ating waveform values. Signal stage memories (26, 28, 30, 32, 34, 36) utilizing flip-flops and gates connect the decoder outputs to an up/down counter (42, 44) which is incremented or decremented according to gear rotation direction only if a complete signal condition sequence occurs.
    • 一种用于旋转体的速度和方向检测器,例如包括邻近齿轮齿(12)安装的一对间隔传感器(14)的齿轮(10),以形成相移的交变信号波形,以及解码器(20) 的输出信号条件(5-53),取决于交替波形值之间的关系。 使用触发器和门的信号级存储器(26,28,30,32,34,36)将解码器输出连接到升/降计数器(42,44),该计数器根据齿轮旋转方向递增或递减,只有当 完成信号条件序列。
    • 5. 发明申请
    • MULTIDIMENSIONAL SIEVING FOR RFID TAG FIELDS
    • RFID标签领域的多维度
    • WO2008094506A1
    • 2008-08-07
    • PCT/US2008/001091
    • 2008-01-26
    • HOLLISTER, AllenBARTA, GaryARMSTRONG, John, T.
    • HOLLISTER, AllenBARTA, GaryARMSTRONG, John, T.
    • G08B26/00
    • G06K7/0008G06K7/10029G06K7/10069G06K7/10217G06K7/10356
    • A system comprising an RFID Reader and an array of RFID Tags, where the tags have the ability to measure physical signal properties such as FM deviation and Received Signal Strength as examples and use these measurements to create a means to refrain from responding to the Reader, unless the measured values fall inside a range determined by a built in algorithm or decision tree or by the Reader and transmitted to the array of Tags in an outbound message. The system may also use non-physical parameters, including tokens sent by the Interrogator/Reader to the Tag field. Moreover, physical parameters may be divided into maskable and unmaskable parameters. Signal frequency is not maskable by the environment, for example, but signal amplitude and phase are maskable by the environment during propagation.. Additionally, the number, the nature and the range of each Multidimensional Variable are set by the Interrogator at the start of a session. In this way, foreknowledge or good estimates of the tag population will lead to higher efficiency operation
    • 一种包括RFID读取器和RFID标签阵列的系统,其中标签具有测量诸如FM偏差和接收信号强度之类的物理信号特性的能力,并且使用这些测量来创建避免对Reader的响应的手段, 除非测量值落在由内置算法或决策树或读者确定的范围内,并传输到出站消息中的标签阵列。 该系统还可以使用非物理参数,包括由询问器/读取器发送到标签字段的令牌。 此外,物理参数可以分为可屏蔽和不可屏蔽的参数。 信号频率不能被环境屏蔽,例如信号幅度和相位在传播期间被环境掩蔽。另外,每个多维变量的数量,性质和范围由询问器在一个 会话。 以这种方式,对标签人群的预知或良好的估计将导致更高的效率操作
    • 7. 发明申请
    • RADIO FREQUENCY IDENTIFICATION SYSTEMS USING ALOHA NETWORKS
    • 使用ALOHA网络的无线电频率识别系统
    • WO2008094461A2
    • 2008-08-07
    • PCT/US2008000992
    • 2008-01-25
    • HOLLISTER ALLENBARTA GARYARMSTRONG JOHN T
    • HOLLISTER ALLENBARTA GARYARMSTRONG JOHN T
    • H04L61/2046H04L29/12264H04L67/12
    • A method is presented for taking an unknown field of transponders and converting them to a slotted Aloha architecture and increasing the throughput allowed by the slotted Aloha architecture by using several different techniques including shortening the time of empty and collided timeslots, implementing a unique random number generator that creates random numbers that are uniquely based on an individual tags location, and on an ability to estimate the total number of transponders and control the offered rate such that throughput is always maximum. While these techniques work well together and produce the most benefit when used together, they are independent techniques and any one may be used alone without the others. Thus a system might use the estimated total number of transponders technique and the timeslot shortening technique, but use a standard random number generator rather one based on transponder location with only a small decrease in overall performance.
    • 提出了一种方法,用于采集未知领域的转发器并将其转换为时隙阿罗哈架构,并通过使用多种不同技术来增加时隙阿罗哈架构允许的吞吐量,包括缩短空时隙和冲突时隙的时间,实现唯一的随机数发生器 它可根据单个标签位置创建唯一的随机数字,并能够估算发送应答器的总数并控制所提供的速率,从而使吞吐量始终达到最高。 虽然这些技术可以很好地协同工作并且在一起使用时产生最大的收益,但它们是独立的技术,任何一种技术都可以单独使用,而无需其他技术。 因此,一个系统可能使用估计的转发器技术总数和时隙缩短技术,但是使用标准的随机数发生器而不是基于转发器位置的发生器,总体性能只有很小的下降。