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1. 发明申请

US20220121397A1 Internal Compression Storage Devices 有权
公开(公告)号：US20220121397A1
公开(公告)日：2022-04-21
申请号：US17181805
申请日：2021-02-22
申请人： Western Digital Technologies, Inc.
发明人： Divya Appaji Lalithamba
IPC分类号： G06F3/06 , G06F11/10 , H03M7/48
摘要： A storage device utilizing internal compression codecs may reduce the overall amount of data required for storage within the memory devices, increasing storage device life spans and available storage space. Data provided to the storage device is compressed prior to storage and decompressed upon retrieval. The data may be formatted at a fixed length to streamline compression processing. The processing time of the compression codecs may be minimized through the use of hardware-based resources when needed. These compression codec storage devices may include one or more communication channels suitable for connection with a host, memory devices within a memory array, and controllers configured to transfer host data from the host-computing device to the memory array. Internal compression codecs can be configured to retrieve host data from one or more buffers, compress the host data with a fixed-input compression method, and store the compressed data within one or more memory devices.

2. 发明申请

US20200084462A1 MULTI-PIXEL CACHING SCHEME FOR LOSSLESS ENCODING 审中-公开
公开(公告)号：US20200084462A1
公开(公告)日：2020-03-12
申请号：US16687014
申请日：2019-11-18
申请人： Citrix Systems, Inc.
发明人： Muhammad A. Dawood
IPC分类号： H04N19/42 , H04N19/93 , H04N19/182 , G09G5/00 , H03M7/48 , H03M7/30 , H04N19/593 , G09G5/06 , H03M7/14 , G09G5/36
摘要： Systems and methods are provided for encoding a multi-pixel caching scheme for lossless encoders. The systems and methods can include obtaining a sequence of pixels, determining repeating sub-sequences of the sequence of pixels consisting of a single repeated pixel and non-repeating sub-sequences of the sequence of pixels, responsive to the determination, encoding the repeating sub-sequences using a run-length of the repeated pixel and encoding the non-repeating sub-sequences using a multi-pixel cache, wherein the encoding using a multi-pixel cache comprises, encoding non-repeating sub-sequences stored in the multi-pixel cache as the location of the non-repeating sub-sequences in the multi-pixel cache, and encoding non-repeating sub-sequences not stored in the multi-pixel cache using the value of the pixels in the non-repeating sub-sequences.

3. 发明申请

US20200044663A1 Methods, Devices and Systems for Hybrid Data Compression and Decompression 审中-公开
公开(公告)号：US20200044663A1
公开(公告)日：2020-02-06
申请号：US16653610
申请日：2019-10-15
申请人： Zeropoint Technologies AB
发明人： Angelos Arelakis , Per Stenström
IPC分类号： H03M7/30 , G06F3/06 , H03M7/48
摘要： Methods, devices and systems enhance compression and decompression of data blocks of data values by selecting the best suited compression method and device among two or a plurality of compression methods and devices, which are combined together and which said compression methods and devices compress effectively data values of particular data types; said best suited compression method and device is selected using as main selection criterion the dominating data type in a data block by predicting the data types within said data block.

4. 发明授权

US10476520B2 Methods, devices and systems for hybrid data compression and decompression 有权
公开(公告)号：US10476520B2
公开(公告)日：2019-11-12
申请号：US15575007
申请日：2016-05-20
申请人： Zeropoint Technologies AB
发明人： Angelos Arelakis , Per Stenström
IPC分类号： H03M7/34 , H03M7/30 , H03M7/48 , G06F3/06 , H03M7/00 , H03M5/00 , H03M7/40 , H03M7/42
摘要： Methods, devices and systems enhance compression and decompression of data blocks of data values by selecting the best suited compression method and device among two or a plurality of compression methods and devices, which are combined together and which said compression methods and devices compress effectively data values of particular data types; said best suited compression method and device is selected using as main selection criterion the dominating data type in a data block by predicting the data types within said data block.

5. 发明授权

US10461775B2 Compression aware SSD 有权
公开(公告)号：US10461775B2
公开(公告)日：2019-10-29
申请号：US16111112
申请日：2018-08-23
申请人： Samsung Electronics Co., Ltd.
发明人： Yang Seok Ki , Yongsuk Lee , Jason Martineau
IPC分类号： H03M7/30 , H03M7/48 , G11B20/00 , G11B20/18
摘要： Embodiments of the present invention include a compression system including one or more compressibility inputs; a compression predictor configured to predict the compressibility of data based on the one or more compressibility inputs; a compressor configured to compress the data; and one or more compression inputs. At least one of the compression predictor or the compressor is configured to determine how to compress the data based on the one or more compression inputs. The one or more compressibility inputs comprise at least one of an object extension dictionary, an object signature dictionary, and an entropy estimation algorithm library. The one or more compression inputs comprise at least one of a quality of service profile, a device performance profile and a compression algorithm performance chart.

6. 发明授权

US09331712B1 Compressed caching in a virtual memory system 有权
公开(公告)号：US09331712B1
公开(公告)日：2016-05-03
申请号：US14832732
申请日：2015-08-21
申请人： QUALCOMM INCORPORATED
发明人： Adrienne Milner , Amin Ansari , Richard Senior , Vito Remo Bica
IPC分类号： H03M5/00 , H03M7/40 , H03M7/48
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.

7. 发明授权

US6411739B2 Image coding and decoding methods, image coding and decoding apparatuses, and recording media for image coding and decoding programs 有权
标题翻译：图像编码和解码方法，图像编码和解码装置以及用于图像编码和解码程序的记录介质
公开(公告)号：US6411739B2
公开(公告)日：2002-06-25
申请号：US73996900
申请日：2000-12-20
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： BOON CHOONG SENG
IPC分类号： G06T9/00 , H03M7/30 , H03M7/40 , H03M7/42 , H03M7/46 , H03M7/48 , H04N1/41 , H04N1/419 , H04N7/24 , H04N19/00 , H04N19/13 , H04N19/136 , H04N19/176 , H04N19/196 , H04N19/423 , H04N19/46 , H04N19/463 , H04N19/503 , H04N19/51 , H04N19/517 , H04N19/60 , H04N19/61 , H04N19/625 , H04N19/63 , H04N19/65 , H04N19/70 , H04N19/89 , H04N19/91 , H04N19/93 , G06K9/36 , G06K9/46
CPC分类号： H03M7/40 , H03M7/42 , H03M7/425 , H03M7/46 , H03M7/48 , H04N19/12 , H04N19/13 , H04N19/146 , H04N19/60 , H04N19/61 , H04N19/91
摘要： In an image coding method of the present invention, after a process such as DCT is performed to digital image data, quantization process is performed, and then, to resultant quantized transform coefficients, variable length coding process is performed with reference to a variable length code table showing how variable length codes are allocated, and in a comparison process between an event derived from the quantized transform coefficients and a reference event included in the variable length code table, transformation process is performed to increase a possibility of performing variable length coding with satisfactory coding efficiency.
摘要翻译：在本发明的图像编码方法中，在对数字图像数据进行了诸如DCT的处理之后，进行量化处理，然后，对于合成的量化变换系数，参照可变长度码进行可变长度编码处理示出了如何分配可变长度代码的表，并且在从量化变换系数导出的事件与包括在可变长度代码表中的参考事件之间的比较处理中，执行变换处理，以增加以令人满意的方式执行可变长度编码的可能性编码效率。

8. 发明授权

US6157325A Encoding of an input information signal 失效
标题翻译：输入信息信号的编码
公开(公告)号：US6157325A
公开(公告)日：2000-12-05
申请号：US307978
申请日：1999-05-10
申请人： Josephus A. H. M. Kahlman , Kornelis A. Schouhamer Immink
发明人： Josephus A. H. M. Kahlman , Kornelis A. Schouhamer Immink
IPC分类号： H03M7/14 , G06T9/00 , H03M7/46 , H03M7/48 , H04N7/32
CPC分类号： H03M5/145
摘要： The invention proposes an apparatus for encoding an information signal. The information signal can be a (d,k) sequence. The apparatus encodes the (d,k) sequence into a (d+n,k+n) sequence by changing the number of zeroes between each time two subsequent ones in the sequence by n. The information signal can also be a RLL sequence of the type (d,k). The apparatus encodes the signal into a RLL sequence of the type (d+n,k+n) by changing the runlengths by n bitcells each.
摘要翻译：本发明提出一种对信息信号进行编码的装置。信息信号可以是（d，k）序列。该装置通过将序列中的每个后续两个之间的零次数改变为n来将（d，k）序列编码为（d + n，k + n）序列。信息信号也可以是类型（d，k）的RLL序列。该装置通过将游程长度改变每个n个比特单元，将信号编码为类型（d + n，k + n）的RLL序列。

9. 发明授权

US6115424A Coding method of dividing information block serving as conversion unit into a plurality of sub-blocks to perform coding for each sub-block, and coding apparatus 失效
标题翻译：将用作转换单元的信息块划分成多个子块以对每个子块进行编码的编码方法，以及编码装置
公开(公告)号：US6115424A
公开(公告)日：2000-09-05
申请号：US436240
申请日：1999-11-09
申请人： Yoshinori Nakatsugawa , Kenji Takemoto
发明人： Yoshinori Nakatsugawa , Kenji Takemoto
IPC分类号： H03M7/14 , H03M7/30 , H03M7/46 , H03M7/48 , H04L25/49 , H04B14/04
CPC分类号： H03M7/3053 , H03M7/46 , H03M7/48
摘要： The information block that is sequentially extracted from an information sequence and that serves as a conversion unit is divided into a plurality of sub-blocks, Then, counting is performed of the information items number of at least one of "0" and "1" that is contained in each sub-block for each sub-block of a plurality of the thus-divided sub-blocks. Then, there is performed, according to the counted result that has been thus obtained, inversion yes/no determination of whether the original information contained in each sub-block should be inverted under the consideration of minimizing the difference between the number of codes "0", and the number of codes "1", contained in the code block as a whole. Then, there is performed, regarding the sub-block, with respect to which a determination of that the original information should be inverted has been made, coding of inverting the original information contained in this sub-block and there is added, with respect to this sub-block, an inversion identification code that represents the effect that the original information has been inverted, while, regarding the sub-block, with respect to which a determination of that the original information should not be inverted has been made, there is performed coding of leaving intact the original information contained in this sub-block without inverting the same and, with respect to this sub-block there is added a maintenance identification code that represents the effect that the original information has been left intact. And by unifying a plurality of code sub-blocks, each of which has had either one of the inversion identification code or maintenance identification code added thereto, the information block is converted into a code block.
摘要翻译：从信息序列中依次提取并作为转换单元的信息块被划分为多个子块。然后，对“0”和“1”中的至少一个的信息项目编号进行计数，被包含在多个这样划分的子块中的每个子块的每个子块中。然后，根据如此获得的计数结果，进行反转是/否确定在考虑到最小化代码数“0”之间的差异的情况下，是否应该将包含在每个子块中的原始信息反转 “，以及包含在代码块中的代码”1“的数量。然后，关于子块，进行关于原始信息应该被反转的确定的编码，对包含在该子块中的原始信息进行反转的编码，并且相对于该子块，表示原始信息已经被反转的效果的反转识别码，而关于子块，关于原始信息的确定不应该被反转，则存在执行完整地保留包含在该子块中的原始信息而不反相，并且相对于该子块，添加了表示原始信息已被保留的效果的维护标识码。并且通过统一多个代码子块，其中每个代码子块已经具有添加到其中的反转识别码或维护识别码中的任一个，将信息块转换为码块。

10. 发明授权

US5894588A Data transmitting apparatus, data recording apparatus, data transmitting method, and data recording method 失效
标题翻译：数据发送装置，数据记录装置，数据发送方法和数据记录方法
公开(公告)号：US5894588A
公开(公告)日：1999-04-13
申请号：US905812
申请日：1997-08-04
申请人： Tetsuji Kawashima , Tatsuya Inokuchi
发明人： Tetsuji Kawashima , Tatsuya Inokuchi
IPC分类号： H03M7/30 , H03M7/48 , G06F3/023
CPC分类号： H03M7/3088 , H03M7/48
摘要： A difference/compression ratio calculating means 76 in a data processing means 71 of a data transmitting apparatus according to the present invention calculates an actual difference and an actual compression ratio based on the data length of pre-compression data received from a data source 2 through pre-compression data receiving means 74 and the data length of compressed data outputted from a data compression circuit 67. If the actual difference is equal to or greater than a preset difference .alpha. and the actual compression ratio is equal to and greater than a preset compression ratio .beta., then the compressed data is transmitted to a data destination 3 through a transfer request data output means 79. Otherwise, the pre-compression data is transmitted to the data destination 3. With this arrangement, it is possible to prevent a phenomenon in which the size of compressed data which occupies a storage area in the data destination 3 is substantially the same as the size of uncompressed data which occupies the storage area, and also to avoid wasteful data expansion in the data destination 3.
摘要翻译：根据本发明的数据发送装置的数据处理装置71中的差分/压缩比计算装置76基于从数据源2接收的预压缩数据的数据长度来计算实际差和实际压缩比，预压缩数据接收装置74以及从数据压缩电路67输出的压缩数据的数据长度。如果实际差异等于或大于预设差值α，并且实际压缩比等于或大于预设压缩比率β，则通过传送请求数据输出装置79将压缩数据发送到数据目的地3.否则，将预压缩数据发送到数据目的地3.通过这种布置，可以防止占据数据目的地3中的存储区域的压缩数据的大小与未压缩的大小基本相同占用存储区域的数据，并避免数据目的地的浪费数据扩展3。

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