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    • 2. 发明申请
    • ROBUST DETECTION OF PACKET TYPES
    • 坚固检测包装类型
    • WO2007087621A2
    • 2007-08-02
    • PCT/US2007/061091
    • 2007-01-26
    • TEXAS INSTRUMENTS INCORPORATEDWATERS, Deric, WayneHOSUR, SrinathBATRA, Anuj
    • WATERS, Deric, WayneHOSUR, SrinathBATRA, Anuj
    • H04K1/10
    • H04L27/0012H04L27/22H04L27/2647
    • Disclosed herein is a system and method for determining the presence of rotated-BPSK modulation. In addition, disclosed herein is a system and method for determining if a received packet (502) is a Legacy (516), Mixed-Mode (520), or Green-Field packet (510) in accordance with the determination of the presence of rotated-BPSK modulation. The presence of a Green- Field packet may be determined by detecting if additional tones are being excited in an LTF symbol of the received packet and/or if a SIG field symbol following the LTF symbol is modulated by rotated-BPSK. The presence of a Mixed-Mode packet may be determined by detecting if the first four bits of the SIG field symbol following the LTF symbol are [1 1 0 1] (514) and/or detecting if a symbol following an L-SIG symbol is modulated by rotated-BPSK (518). The presence of a Legacy packet may be determined by detecting if the symbol following the L-SIG symbol is modulated by BPSK.
    • 本文公开了一种用于确定旋转BPSK调制的存在的系统和方法。 此外,本文所公开的是一种系统和方法,用于根据确定是否存在接收到的分组(502)是否为传统(516),混合模式(520)或绿色场分组(510) 旋转BPSK调制。 可以通过检测附加音调是否在接收到的分组的LTF符号中被激励和/或如果通过旋转BPSK调制LTF符号之后的SIG字段符号,则可以确定绿场分组的存在。 混合模式分组的存在可以通过检测LTF符号之后的SIG字段符号的前四位是否为[1 1 0 1](514)和/或检测是否符合L-SIG符号的符号来确定 由旋转BPSK调制(518)。 可以通过检测L-SIG符号之后的符号是否被BPSK调制来确定遗留分组的存在。
    • 4. 发明申请
    • CANDIDATE GENERATION
    • 候选人生成
    • WO2008073742A1
    • 2008-06-19
    • PCT/US2007/086255
    • 2007-12-03
    • TEXAS INSTRUMENTS INCORPORATEDTORRE, Rafi, DallaBURSHTEIN, DoronPELES, OrenWATERS, Deric, Wayne
    • TORRE, Rafi, DallaBURSHTEIN, DoronPELES, OrenWATERS, Deric, Wayne
    • H04Q7/20
    • H04L25/03006H04L25/061H04L2025/0342H04L2025/03426
    • A method and system for generating a set of candidate symbols. A system includes a Multiple Input Multiple Output ("MIMO") receiver (2202). The receiver includes a candidate generation look-up table ("LUT") (2206) that provides a list of candidate values for a transmitted symbol selected from a constellation of symbols. The candidate generation LUT stores candidate lists for a portion of the constellation of symbols. The portion of the constellation for which candidate lists are stored is selected according to a symmetry of the constellation. The LUT preferably provides a secondary constellation superimposed on a decision region of a primary constellation. The LUT also preferably includes an inner point of the primary constellation and outer points of the primary constellation. The primary and secondary constellations are preferably compressed by application of quadrant, mirror, and inner-point symmetries.
    • 一种用于生成一组候选符号的方法和系统。 一种系统包括多输入多输出(“MIMO”)接收器(2202)。 接收机包括候选生成查询表(“LUT”)(2206),其提供从符号星座中选择的发送符号的候选值的列表。 候选产生LUT存储符号星座的一部分的候选列表。 根据星座的对称性选择存储候选列表的星座部分。 LUT优选地提供叠加在主要星座的决定区域上的次星座。 LUT还优选地包括主星座的内点和主星座的外点。 主要和次要星座优选通过应用象限,反射镜和内点对称来压缩。
    • 8. 发明申请
    • TUNNELING IN USB POWER DELIVERY
    • USB电源传输中的隧道
    • WO2015195968A1
    • 2015-12-23
    • PCT/US2015/036511
    • 2015-06-18
    • TEXAS INSTRUMENTS INCORPORATEDTEXAS INSTRUMENTS JAPAN LIMITED
    • WATERS, Deric, Wayne
    • G06F1/18G06F1/26
    • G06F21/85G06F1/26G06F13/122G06F13/364G06F21/81
    • An electronic system (100) includes a computer (150) and a power adapter (110). The computer (150) includes an embedded controller (EC) (160) coupled to a computer power delivery (PD) controller (155). The power adapter (110) includes a power adapter PD controller (115) connected to a slave device (120) and is configured to communicate with the computer (150) over a communication link (130). The computer PD controller (155) is configured to receive a command from the EC (160), and to transmit a universal serial bus (USB) vendor defined message (VDM) header and one or more vendor defined objects (VDOs) including the information of the payload of the transmit command. The power adapter PD controller (115) responds to the one or more VDOs, either by changing an output signal to the slave device (120) connected to the power adapter PD controller (115) to report a state of a general purpose input/output (GPIO) pin (116) of the power adapter PD controller (115) or to change the state of the GPIO pin (116).
    • 电子系统(100)包括计算机(150)和电力适配器(110)。 计算机(150)包括耦合到计算机功率传递(PD)控制器(155)的嵌入式控制器(EC)(160)。 电源适配器(110)包括连接到从设备(120)的电源适配器PD控制器(115),并且被配置为通过通信链路(130)与计算机(150)进行通信。 计算机PD控制器(155)被配置为从EC(160)接收命令,并且发送通用串行总线(USB)供应商定义的消息(VDM)报头和包括信息的一个或多个供应商定义的对象(VDO) 的发送命令的有效载荷。 电源适配器PD控制器(115)通过将连接到电源适配器PD控制器(115)的从属设备(120)的输出信号改变为报告通用输入/输出的状态来响应一个或多个VDO (GPIO)引脚(116)或改变GPIO引脚(116)的状态。
    • 9. 发明申请
    • USB POWER DELIVERY MULTIPLE DROP USING CYCLIC REDUNDANCY CHECK
    • USB电源输出使用循环冗余检查多功能一体机
    • WO2015109334A1
    • 2015-07-23
    • PCT/US2015/012101
    • 2015-01-20
    • TEXAS INSTRUMENTS INCORPORATEDTEXAS INSTRUMENTS JAPAN LIMITED
    • WATERS, Deric, Wayne
    • H03M13/09H04B1/38H04L12/70
    • H03M13/091H03M13/09H03M13/37H03M13/617H04L1/0041H04L1/0045H04L1/0061H04L2001/0093
    • In described examples, a communication system includes three or more communication transceivers. In example embodiments, multiple different cyclic redundancy check (CRC) generation schemes are maintained. Each CRC generation scheme corresponds to a unique CRC residual value. A CRC value (350) generated using one of the CRC generation schemes is placed in a data packet (300) to be transmitted. The chosen CRC generation scheme reflects which one or more transceivers are intended recipients of the data packet (300). When a data packet (300) is received by a transceiver, a CRC residual value is calculated based on the CRC value (350) contained in the received data packet (300). The calculated CRC residual value is compared against a list of one or more valid CRC residual values for that particular transceiver. If the calculated CRC residual value matches one of the listed valid CRC residual values, the data packet (300) is accepted, otherwise it is rejected.
    • 在所描述的示例中,通信系统包括三个或更多个通信收发器。 在示例实施例中,维持多个不同的循环冗余校验(CRC)生成方案。 每个CRC生成方案对应于唯一的CRC残差值。 使用CRC生成方案之一生成的CRC值(350)被放置在要发送的数据分组(300)中。 选择的CRC生成方案反映哪个一个或多个收发器是数据分组(300)的预期接收者。 当收发器接收到数据分组(300)时,基于包含在接收数据分组(300)中的CRC值(350)计算CRC残差值。 计算的CRC残差值与该特定收发器的一个或多个有效CRC残差值的列表进行比较。 如果计算出的CRC残差值与列出的有效CRC剩余值中的一个匹配,则数据包(300)被接受,否则被拒绝。
    • 10. 发明申请
    • USB INTERFACE CIRCUIT AND METHOD FOR LOW POWER OPERATION
    • USB接口电路和低功耗操作方法
    • WO2017083831A1
    • 2017-05-18
    • PCT/US2016/061862
    • 2016-11-14
    • TEXAS INSTRUMENTS INCORPORATEDTEXAS INSTRUMENTS JAPAN LIMITED
    • WATERS, Deric, WayneCOLLINS, Gregory, Wallis
    • G06F1/26G06F13/38
    • G06F13/4072G06F1/266G06F1/3209G06F1/3215G06F1/3253Y02D10/14Y02D10/151
    • Described examples include USB port controllers (120-1, 120-2) with a control circuit (130) configured to switch from a normal first power mode to a second power mode (LP) for reduced power consumption in response a command (I2CIdle) from a port manager circuit (104), and to switch from the second power mode to the first power mode in response to detected activity on a communications connection (106, 108), or a detected connection of a USB device to a USB port connector (102-1, 102-2). After switching back to the first power mode in response to detected communications activity, the control circuit (130) automatically switches operation of the USB port controller (120-1, 120-2) back to the second power mode unless a communications transaction addressed to the USB port controller (120-1, 120-2) is received within a non-zero certain time after switching from the second power mode to the first power mode.
    • 所描述的示例包括具有控制电路(130)的USB端口控制器(120-1,120-2),该控制电路被配置为从正常的第一功率模式切换到第二功率模式(LP)以降低功率 响应于来自端口管理器电路(104)的命令(I2CIdle)的消耗,以及响应于检测到的通信连接(106,108)上的活动或者检测到的连接的响应而从第二功率模式切换到第一功率模式 USB设备连接到USB端口连接器(102-1,102-2)。 在响应于检测到的通信活动切换回第一电力模式之后,控制电路(130)自动将USB端口控制器(120-1,120-2)的操作切换回第二电力模式,除非通信事务处理为 在从第二功率模式切换到第一功率模式之后,在非零的特定时间内接收USB端口控制器(120-1,120-2)。