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1. 发明申请

WO2020176725A1 STACK MANAGEMENT 审中-公开
公开(公告)号：WO2020176725A1
公开(公告)日：2020-09-03
申请号：PCT/US2020/020087
申请日：2020-02-27
申请人： QUALCOMM INCORPORATED
发明人： SENIOR, Richard , KUSHWAHA, Sundeep , JAGASIA, Harsha Gordhan , AHN, Christopher , CHHABRA, Gurvinder Singh , GENG, Nieyan , KRASNYANSKIY, Maksim , PRASAD, Unni
IPC分类号： G06F9/448 , G06F12/0811 , G06F12/126
摘要： A method of managing a stack includes detecting, by a stack manager of a processor, that a size of a frame to be allocated exceeds available space of a first stack. The first stack is used by a particular task executing at the processor. The method also includes designating a second stack for use by the particular task. The method further includes copying metadata associated with the first stack to the second stack. The metadata enables the stack manager to transition from the second stack to the first stack upon detection that the second stack is no longer in use by the particular task. The method also includes allocating the frame in the second stack.

2. 发明公开

EP3437195A1 GENERATING COMPRESSED DATA STREAMS WITH LOOKBACK PRE-FETCH INSTRUCTIONS FOR PRE-FETCHING DECOMPRESSED DATA FROM A LOOKBACK BUFFER 审中-公开
公开(公告)号：EP3437195A1
公开(公告)日：2019-02-06
申请号：EP17711463.4
申请日：2017-03-02
申请人： Qualcomm Incorporated
发明人： SENIOR, Richard , ANSARI, Amin , BICA, Vito, Remo , BAI, Jinxia
IPC分类号： H03M7/30

3. 发明申请

WO2016182686A1 IMPROVED COMPRESSED CACHING IN A VIRTUAL MEMORY SYSTEM 审中-公开
标题翻译：在虚拟内存系统中改进压缩高速缓存
公开(公告)号：WO2016182686A1
公开(公告)日：2016-11-17
申请号：PCT/US2016/027742
申请日：2016-04-15
申请人： QUALCOMM INCORPORATED
发明人： MILNER, Adrienne , ANSARI, Amin , SENIOR, Richard , BICA, Vito Remo
IPC分类号： H03M7/30 , H04N19/91 , G06F12/08
CPC分类号： H03M7/4062 , G06F2212/401 , H03M7/30 , H03M7/3084 , H03M7/4006 , H03M7/42 , H03M7/48 , H04N19/423 , H04N19/91
摘要： Data compression systems, methods, and computer program products are disclosed. For each successive input word of an input stream, it is determined whether the input word matches an entry in a lookback table. The lookback table is updated in response to the input word. Input words may be of a number of data types, including zero runs and full or partial matches with an entry in the lookback table. A codeword is generated by entropy encoding a data type corresponding to the input word. The lookback table may be indexed by the position of the input word in the input stream.
摘要翻译：公开了数据压缩系统，方法和计算机程序产品。对于输入流的每个连续输入字，确定输入字是否匹配回溯表中的条目。回顾表是响应于输入词更新的。输入字可以是多种数据类型，包括零运行和与回溯表中的条目完全或部分匹配。通过对与输入字对应的数据类型进行熵编码来生成码字。回溯表可以通过输入流中的输入词的位置来索引。

4. 发明申请

WO2016182685A1 IMPROVED COMPRESSED CACHING IN A VIRTUAL MEMORY SYSTEM 审中-公开
标题翻译：虚拟存储系统中改进的压缩缓存
公开(公告)号：WO2016182685A1
公开(公告)日：2016-11-17
申请号：PCT/US2016/027741
申请日：2016-04-15
申请人： QUALCOMM INCORPORATED
发明人： MILNER, Adrienne , ANSARI, Amin , SENIOR, Richard , BICA, Vito Remo
IPC分类号： H03M7/30 , H04N19/91 , G06F12/08
CPC分类号： H03M7/4062 , G06F2212/401 , H03M7/30 , H03M7/3084 , H03M7/4006 , H03M7/42 , H03M7/48 , H04N19/423 , H04N19/91
摘要： Data compression systems, methods, and computer program products are disclosed. For each successive input word of an input stream, it is determined whether the input word matches an entry in a lookback table. The lookback table is updated in response to the input word. Input words may be of a number of data types, including zero runs and full or partial matches with an entry in the lookback table. A codeword is generated by entropy encoding a data type corresponding to the input word. The lookback table may be indexed by the position of the input word in the input stream.
摘要翻译：公开了数据压缩系统，方法和计算机程序产品。对于输入流的每个连续输入字，确定输入字是否与回溯表中的条目匹配。响应于输入字更新回溯表。输入单词可以是多个数据类型，包括零运行，以及与回溯表中的条目的完全或部分匹配。通过对对应于输入字的数据类型进行熵编码来生成码字。回溯表可以由输入流中输入字的位置索引。

5. 发明公开

EP3931690A1 STACK MANAGEMENT 审中-实审
公开(公告)号：EP3931690A1
公开(公告)日：2022-01-05
申请号：EP20714408.0
申请日：2020-02-27
申请人： QUALCOMM INCORPORATED
发明人： SENIOR, Richard , KUSHWAHA, Sundeep , JAGASIA, Harsha Gordhan , AHN, Christopher , CHHABRA, Gurvinder Singh , GENG, Nieyan , KRASNYANSKIY, Maksim , PRASAD, Unni
IPC分类号： G06F9/448 , G06F12/0811 , G06F12/126

6. 发明公开

EP3213416A1 REDUCING DECOMPRESSION TIME WITHOUT IMPACTING COMPRESSION RATIO 有权
标题翻译：在不影响压缩比的情况下减少减压时间
公开(公告)号：EP3213416A1
公开(公告)日：2017-09-06
申请号：EP15775021.7
申请日：2015-09-03
申请人： Qualcomm Incorporated
发明人： OPORTUS VALENZUELA, Andres Alejandro , SENIOR, Richard , RAGHAVENDRA, Raghuveer , GENG, Nieyan , CHHABRA, Gurvinder Singh
IPC分类号： H03M7/30 , G06F12/08
CPC分类号： G06F12/12 , G06F12/08 , G06F12/1009 , G06F2212/401 , H03M7/30 , H03M7/6017 , H03M7/6023 , H03M7/702
摘要： Aspects include computing devices, systems, and methods for implementing executing decompression of a compressed page. A computing device may determine a decompression block of a compressed page that contains a code instruction requested in a memory access request. Decompression blocks, other than the decompression block containing the requested code instruction, may be selected for decompression based on being situated between an end of the compressed page and the decompression block containing the requested code instruction. Decompression blocks not identified for decompression may be substituted for a fault or exception code. The computing device may decompress decompression blocks identified for decompression, starting at the end of the compressed page and terminating the decompression of the compressed page upon filling all blocks with decompressed blocks, faults, or exception code. The remaining decompression blocks of the compressed page may be decompressed after or concurrently with the execution of the requested code instruction.
摘要翻译：各方面包括用于实现对压缩页面执行解压缩的计算设备，系统和方法。计算设备可以确定包含在存储器访问请求中请求的代码指令的压缩页面的解压缩块。可以基于位于压缩页面的末尾和包含所请求的代码指令的解压缩块之间来选择除了包含所请求的代码指令的解压缩块以外的解压缩块用于解压缩。未标识解压缩的解压缩块可能会替代故障或异常代码。计算设备可以在被压缩的页面结束时开始解压缩被标识用于解压缩的解压缩块，并且在用解压缩块，错误或者异常代码填充所有块时终止压缩页面的解压缩。压缩页面的其余解压缩块可在执行所请求的代码指令之后或同时进行解压缩。

7. 发明申请

WO2017160480A1 PRIORITY-BASED ACCESS OF COMPRESSED MEMORY LINES IN MEMORY IN A PROCESSOR-BASED SYSTEM 审中-公开
标题翻译：在基于处理器的系统中，基于优先权的压缩存储器行访问内存
公开(公告)号：WO2017160480A1
公开(公告)日：2017-09-21
申请号：PCT/US2017/018876
申请日：2017-02-22
申请人： QUALCOMM INCORPORATED
发明人： OPORTUS VALENZUELA, Andres, Alejandro , ANSARI, Amin , SENIOR, Richard , GENG, Nieyan , JANAKIRAMAN, Anand , CHHABRA, Gurvinder, Singh
IPC分类号： G06F12/02 , G06F12/06
CPC分类号： G06F3/0611 , G06F3/0626 , G06F3/0659 , G06F3/0661 , G06F3/0665 , G06F3/0673 , G06F12/023 , G06F12/0284 , G06F12/0615 , G06F12/0897 , G06F2212/1016 , G06F2212/1024 , G06F2212/1041 , G06F2212/1044 , G06F2212/1056 , G06F2212/152 , G06F2212/401 , G06F2212/65
摘要： Aspects disclosed relate to a priority-based access of compressed memory lines in a processor-based system. In an aspect, a memory access device in the processor-based system receives a read access request for memory. If the read access request is higher priority, the memory access device uses the logical memory address of the read access request as the physical memory address to access the compressed memory line. However, if the read access request is lower priority, the memory access device translates the logical memory address of the read access request into one or more physical memory addresses in memory space left by the compression of higher priority lines. In this manner, the efficiency of higher priority compressed memory accesses is improved by removing a level of indirection otherwise required to find and access compressed memory lines.
摘要翻译：所公开的方面涉及基于处理器的系统中的压缩存储器行的基于优先级的访问。在一个方面，基于处理器的系统中的存储器访问设备接收对存储器的读访问请求。如果读访问请求的优先级较高，则存储器访问设备使用读访问请求的逻辑存储器地址作为物理存储器地址来访问压缩存储器行。然而，如果读取访问请求的优先级较低，则存储器访问设备将读取访问请求的逻辑存储器地址转换为由较高优先级行压缩留下的存储器空间中的一个或多个物理存储器地址。以这种方式，通过消除寻找和访问压缩存储器行所需的间接级别来提高较高优先级压缩存储器访问的效率。

8. 发明申请

WO2016048718A1 SHARING INITIAL DICTIONARIES AND HUFFMAN TREES BETWEEN MULTIPLE COMPRESSED BLOCKS IN LZ-BASED COMPRESSION ALGORITHMS 审中-公开
标题翻译：在基于LZ的压缩算法中共享多个压缩块之间的初始词典和胡乱曲线
公开(公告)号：WO2016048718A1
公开(公告)日：2016-03-31
申请号：PCT/US2015/050207
申请日：2015-09-15
申请人： QUALCOMM INCORPORATED
发明人： ZIMMER, Michael , SENIOR, Richard , SURESHCHANDRAN, Swaminathan , VENKATACHALAM JAYARAMAN, Venkata Ramanan
IPC分类号： H03M7/30 , H03M7/40
CPC分类号： G06F17/30371 , G06F17/30327 , H03M7/3084 , H03M7/3088 , H03M7/40 , H03M7/6064 , H03M7/6076
摘要： A string of data is partitioned into a set of blocks. Each block is compressed based on a set of initial dictionaries and a set of Huffman trees. Each block is associated by a pointer with an initial dictionary in the set of initial dictionaries and a Huffman tree in the set of Huffman trees used to compress that block. A compressed string of data includes the set of initial dictionaries, the set of Huffman trees, and the compressed blocks and associated pointers.
摘要翻译：一串数据被分割成一组块。每个块基于一组初始字典和一组霍夫曼树进行压缩。每个块通过指针与初始字典集中的初始字典相关联，并且在用于压缩该块的霍夫曼树集合中使用霍夫曼树。一个压缩的数据串包括一组初始字典，一组霍夫曼树，以及压缩的块和相关的指针。

9. 发明申请

WO2015200137A1 SYSTEM AND METHOD FOR DICTIONARY-BASED CACHE-LINE LEVEL CODE COMPRESSION FOR ON-CHIP MEMORIES USING GRADUAL BIT REMOVAL 审中-公开
标题翻译：基于字典的高速缓存代码压缩的系统和方法使用格位拆卸进行片上记忆
公开(公告)号：WO2015200137A1
公开(公告)日：2015-12-30
申请号：PCT/US2015/036752
申请日：2015-06-19
申请人： QUALCOMM INCORPORATED
发明人： ANSARI, Amin , BICA, Vito , SENIOR, Richard
IPC分类号： G06F12/08 , H03M7/30 , H04N19/00
CPC分类号： H03M7/3064 , G06F12/0886 , G06F2212/401 , H03M7/30 , H03M7/3084 , H03M7/3086 , H03M7/6058 , H04N19/00
摘要： Various embodiments of methods and systems for cache-line level compression and decompression ("CLADE") of a data stream in a system on a chip ("SoC") in a portable computing device ("PCD") are disclosed. Embodiments of a CLADE solution compress data at a fined grained level, such as at a cache line level, and then decompress the data with low latency times. Consequently, certain CLADE codec embodiments are particularly well suited for compression and decompression of data streams stored in memory devices tightly coupled to a processing component.
摘要翻译：公开了用于便携式计算设备（“PCD”）中芯片上的系统（“SoC”）中的数据流的高速缓存线级压缩和解压缩（“CLADE”）的方法和系统的各种实施例。 CLADE解决方案的实施例在诸如高速缓存线级别的精细粒度级别压缩数据，然后以低延迟时间解压缩数据。因此，某些CLADE编解码器实施例特别适用于存储在与处理部件紧密耦合的存储器件中的数据流的压缩和解压缩。

10. 发明申请

WO2018208526A1 REDUCING METADATA SIZE USED FOR ADDRESS MAPPING IN COMPRESSED MEMORY SYSTEMS OF PROCESSOR-BASED SYSTEMS 审中-公开
公开(公告)号：WO2018208526A1
公开(公告)日：2018-11-15
申请号：PCT/US2018/030184
申请日：2018-04-30
申请人： QUALCOMM INCORPORATED
发明人： SENIOR, Richard , KOOB, Christopher, Edward , CHHABRA, Gurvinder, Singh , OPORTUS VALENZUELA, Andres, Alejandro , GENG, Nieyan , RAGHAVENDRA, Raghuveer , PORTER, Christopher , JANAKIRAMAN, Anand
IPC分类号： G06F3/06 , G06F12/1009 , G06F12/1027 , G06F12/02
CPC分类号： G06F12/1036 , G06F3/0685 , G06F12/0238 , G06F12/0246 , G06F12/1009 , G06F12/1027 , G06F2212/1044 , G06F2212/401 , G06F2212/60
摘要： Reducing metadata size in compressed memory systems of processor-based systems is disclosed. In one aspect, a compressed memory system provides 2 N compressed data regions, corresponding 2 N sets of free memory lists, and a metadata circuit. The metadata circuit associates virtual addresses with abbreviated physical addresses, which omit N upper bits of corresponding full physical addresses, of memory blocks of the 2 N compressed data regions. A compression circuit of the compressed memory system receives a memory access request including a virtual address, and selects one of the 2 N compressed data regions and one of the 2 N sets of free memory lists based on a modulus of the virtual address and 2 N . The compression circuit retrieves an abbreviated physical address corresponding to the virtual address from the metadata circuit, and performs a memory access operation on a memory block associated with the abbreviated physical address in the selected compressed data region.

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