会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 4. 发明授权
    • Cache-based data compression/decompression
    • 基于缓存的数据压缩/解压缩
    • US5450562A
    • 1995-09-12
    • US963201
    • 1992-10-19
    • Charles RosenbergThomas G. Berge
    • Charles RosenbergThomas G. Berge
    • G06F5/00G06F12/08G06F12/12H03M7/30H03M7/46H04N1/417G06F12/02
    • G06F12/123G06F12/0802G06F12/124H04N1/417G06F2212/401
    • A system for compressing bilevel data includes a first cache memory having a plurality of assigned levels of usage, a first usage level assigned to a most recently used data segments and a second level assigned to a plurality of less recently used data segments. A processor determines if a received data segment is found in the cache memory and, if not, it assigns the received data segment to the cache memory's first level in place of a previous data segment stored therein. The previous data segment is assigned to a position in the second level in place of a less recently used data segment. The less recently used data segment that is displaced is chosen by a pseudo-random method. A not-found indication is then transmitted to a receiving station along with the identity of the received data segment. The receiving station contains identical cache structures and updates its caches in response to received code words and data segments. A further version of the invention emplaces data segments into cache memories in accordance with the context in which the data segments are found, the cache memories being assigned in accordance with context derived addresses.
    • 用于压缩二级数据的系统包括具有多个分配的使用级别的第一高速缓存存储器,分配给最近使用的数据段的第一使用级别和分配给多个不太近使用的数据段的第二级别。 处理器确定在高速缓冲存储器中是否找到接收到的数据段,如果不是,则将接收到的数据段分配给高速缓存存储器的第一级,以代替存储在其中的先前数据段。 先前的数据段被分配到第二级别中的位置,代替不太近使用的数据段。 通过伪随机方法选择最近使用的被替换的数据段。 然后将未发现的指示与接收到的数据段的标识一起发送到接收站。 接收站包含相同的缓存结构,并响应于接收到的代码字和数据段更新其高速缓存。 根据发现数据段的上下文,根据上下文导出的地址分配高速缓冲存储器,本发明的另一个版本将数据段放置在高速缓冲存储器中。
    • 5. 发明授权
    • Page printer having adaptive data compression for memory minimization
    • 页面打印机具有用于存储器最小化的自适应数据压缩
    • US5479587A
    • 1995-12-26
    • US940111
    • 1992-09-03
    • Russ CampbellGary ZimmermanThomas G. BergeTerry M. Nelson
    • Russ CampbellGary ZimmermanThomas G. BergeTerry M. Nelson
    • B41J2/485B41J5/30G06F3/12G06K15/00G06T9/00H03M7/30H03M7/48H04N1/21H04N1/41H04N1/411H04N1/413H04N1/419
    • G06T9/005G06K15/00H03M7/30H03M7/3088H03M7/48G06K2215/0031G06K2215/0071
    • A peripheral unit converts an input data flow to page-arranged outputs and includes a random access memory capacity that is insufficient in size to accommodate an entire page of raster data. The peripheral unit also includes a processor and a control memory that holds a plurality of data compression procedures, each procedure exhibiting a different performance characteristic. The peripheral unit performs a method for compressing portions of the input data flow that includes the steps of: allocating the random access memory to portions of the input data flow; determining when an insufficient amount of random access memory is available for such allocation; employing a first data compression procedure on the input data flow portions to produce a compressed data portion; testing the compressed data portion to determine if a level of compression has been achieved that exceeds a threshold and, if not, employing succeeding data compression procedures and repeating the test for each procedure against a threshold, whereby the compression procedure that first enables a threshold level of compression to be achieved is the compression procedure employed to compress the data flow portion. Improved compression methods and techniques for handling input data flows with both integral and independent image descriptors are also described.
    • 外围单元将输入数据流转换为页面排列的输出,并且包括尺寸不足以容纳整个栅格数据页面的随机存取存储器容量。 外围单元还包括处理器和控制存储器,其保存多个数据压缩过程,每个过程表现出不同的性能特征。 外围单元执行压缩输入数据流的部分的方法,包括以下步骤:将随机存取存储器分配给输入数据流的部分; 确定随机存取存储器的数量不足可用于这种分配; 对输入数据流部分采用第一数据压缩过程以产生压缩数据部分; 测试压缩数据部分以确定是否已经实现超过阈值的压缩级别,以及如果不是采用后续的数据压缩过程并针对阈值重复针对每个过程的测试,由此首先启用阈值级别的压缩过程 要实现的压缩是用于压缩数据流部分的压缩程序。 还描述了用于处理具有积分和独立图像描述符的输入数据流的改进的压缩方法和技术。