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    • 24. 发明授权
    • Stochastic Time-Digital Converter
    • 随机时间数字转换器
    • US08810440B2
    • 2014-08-19
    • US13983297
    • 2012-05-29
    • Jianhui WuZixuan WangXiao ShiMeng ZhangCheng HuangChao ChenFuqing HuangXincun JiPing Jiang
    • Jianhui WuZixuan WangXiao ShiMeng ZhangCheng HuangChao ChenFuqing HuangXincun JiPing Jiang
    • H03M1/04G04F10/00
    • H03M1/04G04F10/005
    • A stochastic time-digital converter (STDC) including an input switching circuit, an STDC array, and an encoder. A clock circuit inputs two clock signals into two input terminals of the input switching circuit; the input switching circuit transmits the two clock signals in a cyclic cross-transposition form to two input terminals of the STDC array, and simultaneously outputs a trigger control signal to the encoder; each comparator in the STDC array independently judges the speeds of the two clock signals and sends the judgement results to the encoder for collection and processing; and the encoder outputs the size and positivity or negativity of the phase difference of the two clock signals. The technical solution utilizes the stochastic characteristic of the STDC to double the number of the equivalent comparators in the STDC array, eliminating the effects on the circuitry of device mismatching and processes, power supply voltage, and temperature.
    • 包括输入切换电路,STDC阵列和编码器的随机时间数字转换器(STDC)。 时钟电路将两个时钟信号输入到输入开关电路的两个输入端; 输入切换电路以循环交叉形式将两个时钟信号发送到STDC阵列的两个输入端,同时向编码器输出触发控制信号; STDC阵列中的每个比较器独立地判断两个时钟信号的速度,并将判断结果发送到编码器进行采集和处理; 并且编码器输出两个时钟信号的相位差的大小和积极性或消极性。 该技术解决方案利用STDC的随机特性将STDC阵列中的等效比较器的数量加倍,从而消除了器件不匹配和处理电路,电源电压和温度的影响。
    • 25. 发明授权
    • Parallel entropy coding
    • 并行熵编码
    • US08660177B2
    • 2014-02-25
    • US12731117
    • 2010-03-24
    • Cheng HuangJason N. Wang
    • Cheng HuangJason N. Wang
    • H04N7/12H04B1/66H04N7/26
    • H04N7/26106H03M7/4006H03M7/42H04N19/13H04N19/436H04N19/61H04N19/91
    • Parallel coding of digital pictures is described. A digital picture is divided into two or more vertical sections. Two or more corresponding Stage 1 encoder units can perform a first stage of entropy coding on the two or more vertical sections on a row-by-row basis. The entropy coding of the vertical sections can be performed in parallel such that each Stage 1 encoder unit performs entropy coding on its respective vertical section and returns a partially coded Stage 1 output to a Stage 2 encoder unit. Each partially coded Stage 1 output includes a representation of data for a corresponding vertical section that has been compressed by a compression factor greater than 1. The Stage 2 encoder unit can generate a final coded bitstream from the partially encoded Stage 1 output as a Stage 2 output.
    • 描述数字图像的并行编码。 数字图片分为两个或多个垂直部分。 两个或多个对应的第一级编码器单元可以逐行地在两个或更多个垂直部分上执行熵编码的第一阶段。 可以并行地执行垂直部分的熵编码,使得每个阶段1编码器单元在其相应垂直部分上执行熵编码,并将部分编码的阶段1输出返回到阶段2编码器单元。 每个部分编码的阶段1输出包括已经被大于1的压缩因子压缩的对应垂直部分的数据表示。阶段2编码器单元可以从部分编码的阶段1输出生成最终编码比特流作为阶段2 输出。
    • 28. 发明申请
    • APPLICATION-DRIVEN CDN PRE-CACHING
    • 应用驱动CDN预先加速
    • US20130159383A1
    • 2013-06-20
    • US13328444
    • 2011-12-16
    • Jonathan Roshan TulianiNicholas Leonard HoltCheng Huang
    • Jonathan Roshan TulianiNicholas Leonard HoltCheng Huang
    • G06F15/16
    • H04L67/2842G06F12/0862G06F17/30902G06F2212/602G06F2212/6028H04L29/08729H04L29/08801H04L29/0881H04L67/2847
    • Techniques are provided for the caching of content prior to the content being requested. A request for desired content may be received from a client application at a caching server. The request may also indicate additional content related to the desired content that may be subsequently requested by the client application. The indicated additional content (and the desired content, if not already cached) is retrieved from an origin server. The desired content is transmitted to the client application at the user device, and the additional content is cached at the caching server. Subsequently, a second request may be received from the client application that includes a request for the additional content. The additional content, which is now cached at the caching server, is served to the client application by the caching server in response to the second request (rather than being retrieved from the origin server).
    • 提供了在请求内容之前缓存内容的技术。 可以从缓存服务器处的客户端应用程序接收对所需内容的请求。 该请求还可以指示与客户端应用随后请求的期望内容相关的附加内容。 从原始服务器检索指示的附加内容(以及所需内容,如果尚未缓存)。 将期望的内容在用户设备处发送到客户端应用,并且附加内容被缓存在高速缓存服务器上。 随后,可以从包括对附加内容的请求的客户端应用接收到第二请求。 缓存服务器上缓存的附加内容由缓存服务器响应于第二个请求(而不是从原始服务器检索)提供给客户端应用程序。
    • 30. 发明授权
    • Optimizing XOR-based codes
    • 优化基于XOR的代码
    • US08209577B2
    • 2012-06-26
    • US11961866
    • 2007-12-20
    • Cheng HuangJin LiMinghua Chen
    • Cheng HuangJin LiMinghua Chen
    • H03M13/00
    • H03M13/033H03M13/1515H03M13/373H03M13/611H03M13/6502
    • A “code optimizer” provides various techniques for optimizing arbitrary XOR-based codes for encoding and/or decoding of data. Further, the optimization techniques enabled by the code optimizer do not depend on any underlining code structure. Therefore, the optimization techniques provided by the code optimizer are applicable to arbitrary codes with arbitrary redundancy. As such, the optimized XOR-based codes generated by the code optimizer are more flexible than specially designed codes, and allow for any desired level of fault tolerance. Typical uses of XOR-based codes include, for example, encoding and/or decoding data using redundant data packets for data transmission real-time communications systems, encoding and/or decoding operations for storage systems such as RAID arrays, etc.
    • “代码优化器”提供了用于优化用于对数据进行编码和/或解码的任意基于XOR的代码的各种技术。 此外,由代码优化器启用的优化技术不依赖于任何下划线的代码结构。 因此,代码优化器提供的优化技术适用于任意冗余的任意代码。 因此,由代码优化器生成的优化的基于XOR的代码比特别设计的代码更灵活,并允许任何期望的容错级别。 基于XOR的代码的典型用途包括例如使用用于数据传输实时通信系统的冗余数据分组来编码和/或解码数据,用于存储系统例如RAID阵列等的编码和/或解码操作。