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    • 2. 发明授权
    • Automatic gathering and analysis of data on commute paths
    • 自动收集和分析通勤路径上的数据
    • US06584401B2
    • 2003-06-24
    • US09995349
    • 2001-11-27
    • Evan R. KirshenbaumKave EshghiHenri Jacques Suemondt
    • Evan R. KirshenbaumKave EshghiHenri Jacques Suemondt
    • G01C2126
    • G08G1/20G01C21/26
    • A method and apparatus for automatically gathering data on paths taken by a number of commuters and then analyzed to provide recommendations for improving the commute experience. Data may be gathered by recording time and position data from a global positioning system (GPS) receiver the commuter carries, recording time and position data from a mobile phone the commuter carries, departure or arrival indications, or a commute log. Commute data may be augmented with a likely route generated based on a start point, an end point, and a map. Commute data may be analyzed by determining a subset of the commuters whose paths are similar. For example, they have a similar start point, a similar end point, a similar start point and a similar end point, a start point similar to a particular point, an end point similar to a particular point, or similar start and end points.
    • 一种方法和装置,用于自动收集由多名通勤者采取的路径的数据,然后进行分析,以提供改善通勤体验的建议。 可以通过记录来自全球定位系统(GPS)接收器的通勤者携带的时间和位置数据来收集数据,记录来自移动电话的通勤者携带,离开或到达指示或通勤日志的时间和位置数据。 可以使用基于起始点,终点和地图生成的可能路线来增加通勤数据。 可以通过确定其路径相似的通勤者的子集来分析通勤数据。 例如,它们具有类似的起始点,类似的终点,类似的起始点和类似的终点,类似于特定点的起始点,类似于特定点的终点或类似的起点和终点。
    • 3. 发明授权
    • Finding matching locations, trajectories or attributes while maintaining privacy of non-matching information
    • 寻找匹配的位置,轨迹或属性,同时保持非匹配信息的隐私
    • US08560512B2
    • 2013-10-15
    • US10199664
    • 2002-07-18
    • Kave EshghiHenri Jacques SuermondtEvan R. Kirshenbaum
    • Kave EshghiHenri Jacques SuermondtEvan R. Kirshenbaum
    • G06F17/30
    • H04L9/3239H04L9/3271H04L2209/80
    • A method and an apparatus for matching elements within sets of trajectories, locations or other attributes without revealing the entire sets. The elements are partitioned into segments. A rotating selection is made among the sets and one segment of each potentially matching element is newly disclosed from the selected set. Optionally, the sets are cryptographically hashed, using, for example, a MD5 hash or a SHA-1 hash. Optionally, the sets are represented as tries, and successively lower levels within the tries are newly disclosed from potentially matching elements as the disclosing set rotates. Optionally, the sets are encoded, using: a grid of longitude and latitude; a spatial temporal grid; a overlapping spatial grid; a temporal grid; a set of cities; a set of countries; a set of names of places; or a set of attributes. Optionally, the matching process is repeated while refining the encoding. Optionally, negotiations determine what encoding or cryptographic hash is used.
    • 用于在不显示整个集合的情况下在轨迹集,位置或其他属性集合内匹配元素的方法和装置。 元素被分割成段。 在这些组之间进行旋转选择,并且从所选择的集合新公开每个潜在匹配元素的一个片段。 可选地,使用例如MD5散列或SHA-1散列来将集合进行加密散列。 可选地,集合被表示为尝试,并且随着公开集旋转,潜在的匹配元素中新尝试尝试内的连续较低级别。 可选地,这些集合被编码,使用:经度和纬度的网格; 空间时间格; 重叠的空间网格; 时间网格 一套城市; 一套国家; 一套名称的地方; 或一组属性。 可选地,在精炼编码的同时重复匹配过程。 可选地,协商确定使用什么编码或密码散列。
    • 5. 发明授权
    • System and method for segmenting a data stream
    • 用于分割数据流的系统和方法
    • US08375182B2
    • 2013-02-12
    • US12368784
    • 2009-02-10
    • Kave EshghiMark David Lillibridge
    • Kave EshghiMark David Lillibridge
    • G06F12/16
    • G06F11/1453G06F11/1456
    • A method of limiting redundant storage of data comprises receiving a data stream and partitioning the data stream into a series of data chunks. At least one content hash value for a set of data chunks is generated based on data content of the set of data chunks. One or more data chunks are grouped into a segment with at least one boundary of the segment defined based on an evaluation of content hash values of data chunks. Content hash values of data chunks of the segment are compared to content hash values of data chunks of segments stored on a backup mass storage device. A pointer to a stored data chunk of an existing segment is stored on the backup mass storage device if a content hash value of a data chunk of the segment matches the content hash value of the stored data chunk.
    • 限制数据的冗余存储的方法包括接收数据流并将数据流划分成一系列数据块。 基于该组数据块的数据内容生成用于一组数据块的至少一个内容哈希值。 一个或多个数据块被分组成具有基于对数据块的内容哈希值的评估定义的段的至少一个边界的段。 将段的数据块的内容哈希值与存储在备份大容量存储设备上的段的数据块的内容哈希值进行比较。 如果段的数据块的内容散列值与存储的数据块的内容哈希值匹配,则指向现有段的存储数据块的指针被存储在备份大容量存储设备上。
    • 8. 发明授权
    • Copying a differential data store into temporary storage media in response to a request
    • 响应请求将差分数据存储复制到临时存储介质中
    • US09141621B2
    • 2015-09-22
    • US12432807
    • 2009-04-30
    • Mark David LillibridgeKave EshghiDeepavali Mahendra BhagwatVinay Deolalikar
    • Mark David LillibridgeKave EshghiDeepavali Mahendra BhagwatVinay Deolalikar
    • G06F7/00G06F17/30G06F3/06
    • G06F17/30067G06F3/064G06F17/30156G06F17/30194
    • A plurality of differential data stores are stored in persistent storage media. In response to receiving a first request to store a particular data object, one of the differential data stores that are stored in the persistent storage media is selected, wherein selecting the one differential data store is according to a criterion relating to compression of data objects in the differential data stores. The selected differential data store is copied into temporary storage media, where the copying is not delayed after receiving the first request to await receipt of more requests. The particular data object is inserted into the copy of the selected differential data store in the temporary storage media, where the inserting is performed without having to retrieve more data from the selected differential store in the persistent storage media. The selected differential data store in the persistent storage media is replaced with the copy of the selected differential data store in the temporary storage media that has been modified.
    • 多个差分数据存储器存储在持久存储介质中。 响应于接收到存储特定数据对象的第一请求,选择存储在永久存储介质中的差分数据存储之一,其中选择一个差分数据存储是根据与数据对象的压缩有关的标准 差分数据存储。 所选择的差分数据存储被复制到临时存储介质中,其中在接收到等待接收更多请求的第一请求之后复制不被延迟。 将特定数据对象插入临时存储介质中所选择的差分数据存储的副本,其中执行插入,而不必从永久存储介质中的所选择的差分存储中检索更多的数据。 永久存储介质中所选择的差分数据存储被所修改的临时存储介质中所选差分数据存储的副本所替代。