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    • 2. 发明授权
    • On-board wireless communication apparatus and on-board wireless communication system
    • 车载无线通信装置和车载无线通信系统
    • US08817727B2
    • 2014-08-26
    • US13388641
    • 2009-10-13
    • Tsutomu Usui
    • Tsutomu Usui
    • H04W4/00H04W4/02H04W64/00
    • H04W4/02H04W28/18H04W40/20H04W64/006H04W72/0413
    • An on-board wireless communication apparatus using an OFDMA scheme includes: a position information acquisition unit which estimates a position after a predetermined time period based on base station position information, mobile station position information, and speed information of mobile station as estimated mobile station position information; a transmission path information storage unit which determines a transmission rate to be applied based on the estimated position information and a distribution of the transmission rate determined by a distance from the base station; a reception buffer unit which stores received data; a reception buffer amount adjustment unit which determines a data amount to be received based on a data storage amount from the buffer unit and a type of the data therein; and a band allocation unit which determines a band requested to the base station by the transmission rate from the storage unit and the data amount from the adjustment unit.
    • 使用OFDMA方式的车载无线通信装置包括:位置信息获取单元,基于基站位置信息,移动站位置信息以及移动站的速度信息,作为估计的移动站位置,估计预定时间段之后的位置 信息; 传输路径信息存储单元,其基于所估计的位置信息和由距离所述基站的距离确定的传输速率的分布来确定要应用的传输速率; 存储接收数据的接收缓冲器单元; 接收缓冲量调整单元,其基于来自缓冲单元的数据存储量确定要接收的数据量,以及其中的数据类型; 以及频带分配单元,其通过来自存储单元的传输速率和来自调整单元的数据量来确定对基站请求的频带。
    • 3. 发明授权
    • Image signal processing system
    • 图像信号处理系统
    • US08681242B2
    • 2014-03-25
    • US13152337
    • 2011-06-03
    • Mari OhbuchiHirotomo SaiTsutomu UsuiShinichiro Hirooka
    • Mari OhbuchiHirotomo SaiTsutomu UsuiShinichiro Hirooka
    • G06K9/40H04N5/235H04N5/228H04N9/73
    • H04N5/243H04N5/23219
    • An image signal processing system according to the present invention has a function to perform image quality control in photographing a subject having a large difference in brightness in the surrounding environment so that the entire photographed image, in particular a subject which a user desires to view, has an adequate brightness and an adequate gradation. Specifically, this image signal processing system comprises: a video input unit, a video signal processing unit for performing signal processing on a signal output from the video input unit, and generating a video signal; an input-output characteristic control unit for controlling a characteristic of the video signal which the video signal processing unit generates; and a subject recognition unit for performing image processing on the video signal which the video signal processing unit generates, and recognizing and detecting subject information.
    • 根据本发明的图像信号处理系统具有对周围环境中的亮度差大的拍摄对象进行图像质量控制的功能,使得整个拍摄图像,特别是用户期望观看的被摄体, 具有足够的亮度和足够的等级。 具体地,该图像信号处理系统包括:视频输入单元,用于对从视频输入单元输出的信号执行信号处理并产生视频信号的视频信号处理单元; 输入输出特性控制单元,用于控制视频信号处理单元产生的视频信号的特性; 以及用于对视频信号处理单元产生的视频信号执行图像处理并识别和检测对象信息的对象识别单元。
    • 5. 发明授权
    • Photographing apparatus
    • 拍摄装置
    • US07590348B2
    • 2009-09-15
    • US11638243
    • 2006-12-12
    • Tsutomu UsuiHirotomo Sai
    • Tsutomu UsuiHirotomo Sai
    • G03B41/00
    • H04N5/235H04N5/2351H04N5/2355H04N5/247
    • A photographing apparatuses, enabling to keep dynamic resolution, as well as, to obtain an image being wide in dynamic range, with using a plural number of cameras therein, and further enabling to photograph a further wider range, comprises: a plural number of photographing devices overlapping photographing regions thereof with each other; a brightness distribution detecting portion for detecting brightness levels of image signals, which are photographed by means of the plural number of photographing devices; an area determining portion for determining an area where the brightness level detected by the brightness distribution detecting portion is appropriate, among photographing regions overlapping with each other, in relation with the image signals photographed by the plural number of photographing devices; and a synthesizing portion for synthesizing the image signals photographed by the plural number of photographing devices, with using the image signal of the area, the brightness level of which is determined to be appropriate in the area determining portion, among the image signals photographed by the plural number of photographing devices, in relation with the photographing regions overlapping with each other.
    • 一种能够保持动态分辨率以及通过使用多个摄像机来获得动态范围宽的图像的拍摄设备,并且还能够拍摄更宽的范围,包括:多个拍摄 设备将其拍摄区域彼此重叠; 亮度分布检测部分,用于检测通过多个拍摄装置拍摄的图像信号的亮度级; 区域确定部分,用于在由多个拍摄装置拍摄的图像信号的相互重叠的拍摄区域中,确定由亮度分布检测部分检测到的亮度级别适合的区域; 以及合成部分,用于合成由多个拍摄装置拍摄的图像信号,在由该拍摄装置拍摄的图像信号中使用其区域确定部分中确定为适合的亮度等级的区域的图像信号 多个拍摄装置相对于彼此重叠的拍摄区域。
    • 7. 发明申请
    • SCHEDULING METHOD AND COMMUNICATION APPARATUS
    • 调度方法和通信装置
    • US20090129329A1
    • 2009-05-21
    • US12282886
    • 2006-05-26
    • Tsutomu Usui
    • Tsutomu Usui
    • H04W72/12
    • H04L5/0007H04L5/0037H04L5/0044H04L5/006H04L5/0062H04W72/082
    • The present invention provides a scheduling method in which a communication apparatus belonging to an OFDMA-based wireless communication system communicates data with a plurality of users by preferentially allocating a data sequence to a default subchannel segment that is different from other-cell allocation subchannel segment that is preferentially used for data communication by adjacent communication terminal. The scheduling method includes a data sequence selection-allocation step including selecting as many data sequences as can be allocated to the default subchannel segment and allocating (scheduling) selected data sequences to the default subchannel segment, wherein in downlink scheduling, the data sequence selection-allocation step including selecting the data sequences in order from a data sequence subjected to a maximum level of interference from an adjacent other base station (adjacent base station), and in uplink scheduling, the data sequence selection-allocation step including selecting the data sequences in order from a data sequence that causes a maximum level of interference to the adjacent base station because of data communication; and a remaining data sequence allocation step including allocating a data sequence that has not allocated to the default subchannel segment to the other-cell allocation subchannel segment when allocation of all the data sequences to the default subchannel segment fails.
    • 本发明提供了一种调度方法,其中属于基于OFDMA的无线通信系统的通信装置通过优先地将数据序列分配给与其他小区分配子信道段不同的默认子信道段来传送数据, 优先用于相邻通信终端的数据通信。 调度方法包括数据序列选择分配步骤,包括选择可分配给默认子信道段的数据序列,并将所选择的数据序列分配(调度)到默认子信道段,其中在下行链路调度中,数据序列选择 - 分配步骤,包括从受到来自相邻的其他基站(相邻基站)的最大干扰水平的数据序列依次选择数据序列,并且在上行链路调度中,所述数据序列选择分配步骤包括: 由于数据通信而导致对相邻基站的最大干扰水平的数据序列的顺序; 以及剩余数据序列分配步骤,包括当将默认子信道段的所有数据序列分配失败时,将尚未分配给所述缺省子信道段的数据序列分配给所述另一小区分配子信道段。
    • 9. 发明申请
    • Communication Device and Communication Method
    • 通信设备与通信方法
    • US20080212659A1
    • 2008-09-04
    • US11816138
    • 2005-12-15
    • Tsutomu Usui
    • Tsutomu Usui
    • H04B15/00
    • H04L1/20H04B17/336H04B17/345H04B17/382H04L25/0212H04L27/2647
    • Based on interference electric power attributed to a delayed wave, interference electric power attributed to a signal from another non-targeted terminal or a base station, and noise electric power, in order to obtain an index for further exactly representing the signal quality, the combination of a desired-signal/undesired-signal ratio 1 (referred to as DUR1) that is a power ratio of a signal component to an interference component either from another terminal of a serving cell or from a terminal or a base station, etc. of neighborhood cells and a noise component, and a desired-signal/undesired-signal ratio 2 (referred to as DUR2) that is a power ratio of a signal component to an inter-symbol interference component and an inter-carrier interference component attributed to the delayed wave is included in the index of the signal quality. A channel-impulse-response estimation unit 10 calculates a channel-impulse response from a received signal and a previously-held pilot symbol, and a desired-signal/undesired-signal ratio 2 estimation unit 15 estimates DUR2, using the channel-impulse response. A desired-signal/undesired-signal ratio 1 estimation unit 16 estimates DUR1 using a pilot symbol included in a burst. A modulation-condition selection unit 11 determines a transmission parameter to be applied, using DUR1 and DUR2.
    • 基于归因于延迟波的干扰电力,归因于来自另一非目标终端或基站的信号的干扰电力以及噪声电力,为了获得进一步精确地表示信号质量的指标,组合 作为来自服务小区的另一终端或从终端或基站等的信号分量与干扰分量的功率比的期望信号/不期望信号比1(称为DUR 1)等。 的邻域信元和噪声分量,以及作为信号分量与符号间干扰分量的功率比和载波间干扰分量归属的期望信号/不期望信号比2(称为DUR 2) 延迟波被包括在信号质量的指标中。 信道脉冲响应估计单元10根据接收信号和先前保持的导频符号来计算信道脉冲响应,期望信号/不期望信号比2估计单元15使用信道脉冲估计DUR 2 响应。 期望信号/不期望信号比率1估计单元16使用包括在突发中的导频符号来估计DUR 1。 调制条件选择单元11使用DUR 1和DUR 2确定要应用的传输参数。