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11. 发明授权

US07415608B2 On-disk file format for a serverless distributed file system 有权
公开(公告)号：US07415608B2
公开(公告)日：2008-08-19
申请号：US11014262
申请日：2004-12-16
申请人： William J. Bolosky , Gerald Cermak , Atul Adya , John R. Douceur
发明人： William J. Bolosky , Gerald Cermak , Atul Adya , John R. Douceur
IPC分类号： H04L29/00
CPC分类号： G06F17/30097 , G06F19/00 , H04L9/0656 , H04L9/3239 , H04L9/3249 , H04L2209/20 , H04L2209/38 , H04L2209/60
摘要： A file format for a serverless distributed file system is composed of two parts: a primary data stream and a metadata stream. The data stream contains a file that is divided into multiple blocks. Each block is encrypted using a hash of the block as the encryption key. The metadata stream contains a header, a structure for indexing the encrypted blocks in the primary data stream, and some user information. The indexing structure defines leaf nodes for each of the blocks. Each leaf node consists of an access value used for decryption of the associated block and a verification value used to verify the encrypted block independently of other blocks. In one implementation, the access value is formed by hashing the file block and encrypting the resultant hash value using a randomly generated key. The key is then encrypted using the user's key as the encryption key. The verification value is formed by hashing the associated encrypted block using a one-way hash function. The file format supports verification of individual file blocks without knowledge of the randomly generated key or any user keys. To verify a block of the file, the file system traverses the tree to the appropriate leaf node associated with a target block to be verified. The file system hashes the target block and if the hash matches the access value contained in the leaf node, the block is authentic.

12. 发明授权

US07363375B2 Adaptive allocation of last-hop bandwidth based on monitoring of end-to-end throughput 有权
标题翻译：基于端到端吞吐量的监控自适应分配最后一跳带宽
公开(公告)号：US07363375B2
公开(公告)日：2008-04-22
申请号：US10144518
申请日：2002-05-13
申请人： Lili Qiu , Paramvir Bahl , Atul Adya
发明人： Lili Qiu , Paramvir Bahl , Atul Adya
IPC分类号： G06F15/173 , G06F15/16
CPC分类号： H04L47/10 , H04L47/11 , H04L47/15 , H04L47/70 , H04L47/762 , H04L47/822 , H04L47/824
摘要： A method for refinishing a countertop in order to achieve a granite, a marble, or other desired look uses an oil-based paint having a glaze therein applied as a base coat to a countertop that has been prepared smooth and taped as needed. Once the base coat dries, one or more additional coats each coat may be the same color as the other additional coats or different from the other coats, and each additional coat being a different color from the base coat. One of three applicators is used for the additional coats including a feather, a rag, and a sponge, the selection of the applicator or applicators, and the color or colors to apply with each, being dependant on the particular look desired. Once all paint is applied and a dried, a polyurethane coat is applied to give additional luster, in order for the finish to be either more granite-like or more marble-like in appearance and in order to protect the finish.
摘要翻译：为了实现花岗岩，大理石或其他所需的外观，用于修补台面的方法将其中具有釉料的油性涂料作为基底涂层涂覆到已经根据需要制备得光滑和胶带的台面上。一旦底漆干燥，每个涂层的一个或多个附加涂层可以与其它附加涂层的颜色相同或与其它涂层不同，并且每个附加涂层与底涂层不同的颜色。三个施加器中的一个用于附加的外套，包括羽毛，抹布和海绵，选择施用器或施用器，以及每个应用的颜色或颜色，取决于所期望的特定外观。一旦施用所有的涂料并干燥后，施加聚氨酯涂层以产生额外的光泽，以使表面的外观上更加花岗岩状或更大的大理石状，并且为了保护表面。

13. 发明授权

US07346774B2 Encrypted key cache 有权
标题翻译：加密密钥缓存
公开(公告)号：US07346774B2
公开(公告)日：2008-03-18
申请号：US11206525
申请日：2005-08-18
申请人： John R. Douceur , Atul Adya , William J. Bolosky , Marvin M. Theimer
发明人： John R. Douceur , Atul Adya , William J. Bolosky , Marvin M. Theimer
IPC分类号： H04L9/00
CPC分类号： H04L9/0825 , H04L9/0894
摘要： A file that has been encrypted using a symmetric key and that has a corresponding access control entry with the symmetric key encrypted using the public key of a public/private key pair can be accessed. An encrypted key cache is also accessed to determine whether an access control entry to symmetric key mapping exists in the cache for the access control entry corresponding to the file. If such a mapping exists in the cache, then the mapped-to symmetric key is obtained form the cache, otherwise the encrypted symmetric key is decrypted using the private key of the public/private key pair. The encrypted key cache itself can also be encrypted and stored as an encrypted file.
摘要翻译：可以访问已经使用对称密钥加密并具有使用公钥/私钥对的公钥加密的对称密钥的相应访问控制条目的文件。还访问加密密钥高速缓存以确定对应于该文件的访问控制条目的高速缓存中是否存在对称密钥映射的访问控制条目。如果高速缓存中存在这样的映射，则从高速缓存获得映射到对称密钥，否则使用公钥/私钥对的私钥解密加密的对称密钥。加密的密钥缓存本身也可以加密并存储为加密文件。

14. 发明授权

US07272630B2 Locating potentially identical objects across multiple computers based on stochastic partitioning of workload 有权
标题翻译：基于工作负载的随机分区，在多台计算机上定位潜在的相同对象
公开(公告)号：US07272630B2
公开(公告)日：2007-09-18
申请号：US10991571
申请日：2004-11-18
申请人： John R. Douceur , Marvin M. Theimer , Atul Adya , William J. Bolosky
发明人： John R. Douceur , Marvin M. Theimer , Atul Adya , William J. Bolosky
IPC分类号： G06F15/13
CPC分类号： G06F17/30156 , Y10S707/99944 , Y10S707/99946 , Y10S707/99952 , Y10S707/99953
摘要： Potentially identical objects (e.g., files) are located across multiple computers based on stochastic partitioning of workload. For each of a plurality of objects stored on a plurality of computers in a network, a portion of object information corresponding to the object is selected. The object information can be generated in a variety of manners (e.g., based on hashing the object, based on characteristics of the object, and so forth). Any of a variety of portions of the object information can be used (e.g., the least significant bits of the object information). A stochastic partitioning process is then used to identify which of the plurality of computers to communicate the object information to for identification of potentially identical objects on the plurality of computers.
摘要翻译：基于工作负载的随机划分，潜在地相同的对象（例如，文件）位于多个计算机之间。对于存储在网络中的多个计算机上的多个对象中的每一个，选择与对象相对应的对象信息的一部分。可以以各种方式生成对象信息（例如，基于对象的散列，基于对象的特征等）。可以使用对象信息的各种部分中的任何一个（例如，对象信息的最低有效位）。然后使用随机划分过程来识别多个计算机中的哪个计算机传达对象信息以便在多个计算机上识别可能相同的对象。

15. 发明授权

US07245936B2 Power efficient channel scheduling in a wireless network 有权
公开(公告)号：US07245936B2
公开(公告)日：2007-07-17
申请号：US11010660
申请日：2004-12-13
申请人： Paramvir Bahl , Jitendra D. Padhey , Atul Adya
发明人： Paramvir Bahl , Jitendra D. Padhey , Atul Adya
IPC分类号： H04Q7/20 , H04B7/00
CPC分类号： H04W52/0216 , H04W52/0219 , H04W52/0241 , H04W52/46 , H04W72/14 , H04W84/12 , H04W88/04 , H04W88/06 , Y02D70/1226 , Y02D70/142
摘要： A method and system for optimizing channel access scheduling for multiple wireless computing devices over a wireless network improves channel access efficiency with respect to a primary channel. An access point, or host computer, includes a host transceiver for receiving control information from the wireless computing devices over a low power channel. Upon receiving the control information, the access point applies a scheduling algorithm to schedule channel access for the wireless computing devices to transmit data over the primary communication channel. The wireless computing devices include a low power radio for receiving scheduling information via the low power channel during idle periods. When the scheduling information is received, the wireless computing device activates its primary channel network interface components to communicate data through the primary channel. When the computing device is idle, the device is configured to power down all of its components with the exception of the circuitry required to power the low power channel. As such, the low power channel is maintained in an active state for receiving scheduling information, such as an access schedule, during both idle and non-idle periods.

16. 发明授权

US07240060B2 Serverless distributed file system 有权
标题翻译：无服务器分布式文件系统
公开(公告)号：US07240060B2
公开(公告)日：2007-07-03
申请号：US11016388
申请日：2004-12-17
申请人： Atul Adya , William J. Bolosky , Gerald Cermak , John R. Douceur , Marvin M. Theimer , Roger P. Wattenhofer
发明人： Atul Adya , William J. Bolosky , Gerald Cermak , John R. Douceur , Marvin M. Theimer , Roger P. Wattenhofer
IPC分类号： G06F7/00 , G06F17/30
CPC分类号： G06F17/30094 , G06F17/30171 , G06F17/30899 , G06F2201/825 , H04L63/0823 , H04L63/123 , Y10S707/956 , Y10S707/99931 , Y10S707/99938
摘要： A serverless distributed file system manages the storage of files and directories using one or more directory groups. The directories may be managed using Byzantine-fault-tolerant groups, whereas files are managed without using Byzantine-fault-tolerant groups. Additionally, the file system may employ a hierarchical namespace to store files. Furthermore, the directory group may employ a plurality of locks to control access to objects (e.g., files and directories) in each directory.
摘要翻译：无服务器分布式文件系统使用一个或多个目录组来管理文件和目录的存储。可以使用拜占庭容错组来管理目录，而不使用拜占庭容错组来管理文件。此外，文件系统可以使用分层命名空间来存储文件。此外，目录组可以使用多个锁来控制对每个目录中的对象（例如，文件和目录）的访问。

17. 发明授权

US07209740B2 Power efficient channel scheduling in a wireless network 有权
公开(公告)号：US07209740B2
公开(公告)日：2007-04-24
申请号：US11011010
申请日：2004-12-13
申请人： Paramvir Bahl , Atul Adya , Jitendra D. Padhye
发明人： Paramvir Bahl , Atul Adya , Jitendra D. Padhye
IPC分类号： H04Q7/20 , H04Q7/24
CPC分类号： H04W52/0216 , H04W52/0219 , H04W52/0241 , H04W52/46 , H04W72/14 , H04W84/12 , H04W88/04 , H04W88/06 , Y02D70/1226 , Y02D70/142
摘要： A method and system for optimizing channel access scheduling for multiple wireless computing devices over a wireless network improves channel access efficiency with respect to a primary channel. An access point, or host computer, includes a host transceiver for receiving control information from the wireless computing devices over a low power channel. Upon receiving the control information, the access point applies a scheduling algorithm to schedule channel access for the wireless computing devices to transmit data over the primary communication channel. The wireless computing devices include a low power radio for receiving scheduling information via the low power channel during idle periods. When the scheduling information is received, the wireless computing device activates its primary channel network interface components to communicate data through the primary channel. When the computing device is idle, the device is configured to power down all of its components with the exception of the circuitry required to power the low power channel. As such, the low power channel is maintained in an active state for receiving scheduling information, such as an access schedule, during both idle and non-idle periods.

18. 发明申请

US20070076881A1 Exclusive Encryption 有权
标题翻译：独家加密
公开(公告)号：US20070076881A1
公开(公告)日：2007-04-05
申请号：US11275186
申请日：2005-12-16
申请人： John Douceur , Josh Benaloh , Gideon Yuval , Atul Adya
发明人： John Douceur , Josh Benaloh , Gideon Yuval , Atul Adya
IPC分类号： H04K1/00
CPC分类号： H04L63/0428 , G06F21/6209 , G06F21/6218 , G06F2221/2107
摘要： An exclusive encryption system is established using multiple computing devices. The exclusive encryption system allows for the exclusion of certain plaintext (e.g., by one of the computing devices) and ciphertext (e.g., by another of the computing devices) while at the same time maintaining the privacy created by the encryption (e.g., so the other computing device cannot see the plaintext). The exclusive encryption system may be implemented as part of a serverless distributed file system with directory entries (e.g., file names or folder names) being the plaintext, or alternatively as part of other systems.
摘要翻译：使用多个计算设备建立专用加密系统。专用加密系统允许排除某些明文（例如，由计算设备之一）和密文（例如，由计算设备中的另一个），同时保持由加密产生的隐私（例如，因此，其他计算设备看不到明文）。独占加密系统可以被实现为具有目录条目（例如，文件名或文件夹名称）为明文，或作为其他系统的一部分的无服务器分布式文件系统的一部分。

19. 发明授权

US07099689B2 Energy-aware communications for a multi-radio system 失效
标题翻译：用于多无线电系统的能量感知通信
公开(公告)号：US07099689B2
公开(公告)日：2006-08-29
申请号：US10610293
申请日：2003-06-30
申请人： Paramvir Bahl , Atul Adya , Alastair Wolman , Jitendra D. Padhye
发明人： Paramvir Bahl , Atul Adya , Alastair Wolman , Jitendra D. Padhye
IPC分类号： H04Q7/20
CPC分类号： H04W52/0277 , Y02D70/1222 , Y02D70/142 , Y02D70/144 , Y02D70/22
摘要： Described herein is an implementation that reduces the battery consumption of an energy-constrained computing device that is capable of communicating over a wireless network. As conditions and circumstances warrant, the implementation selects one of multiple radios (e.g., two)—with each having a unique combination of characteristics (in terms of power-consumption, data-rate, range and/or frequency band of operation) for wireless communications to and from a wireless device. The implementation selects one radio to minimize power-consumption while maintaining effective wireless data communication. This abstract itself is not intended to limit the scope of this patent. The scope of the present invention is pointed out in the appending claims.
摘要翻译：这里描述了减少能够通过无线网络进行通信的能量约束计算设备的电池消耗的实现。根据条件和情况的需要，实现选择多个无线电（例如两个）中的一个，每个具有针对无线的特征（在功耗，数据速率，范围和/或频带方面）的独特组合与无线设备的通信。实现选择一个无线电以最小化功耗，同时保持有效的无线数据通信。本摘要本身并不旨在限制本专利的范围。在所附权利要求中指出了本发明的范围。

20. 发明授权

US07062490B2 Serverless distributed file system 有权
公开(公告)号：US07062490B2
公开(公告)日：2006-06-13
申请号：US10005629
申请日：2001-12-05
申请人： Atul Adya , William J. Bolosky , Gerald Cermak , John R. Douceur , Marvin M. Theimer , Roger P. Wattenhofer
发明人： Atul Adya , William J. Bolosky , Gerald Cermak , John R. Douceur , Marvin M. Theimer , Roger P. Wattenhofer
IPC分类号： G06F7/00 , G06F17/30
CPC分类号： G06F17/30094 , G06F17/30171 , G06F17/30899 , G06F2201/825 , H04L63/0823 , H04L63/123 , Y10S707/956 , Y10S707/99931 , Y10S707/99938
摘要： A serverless distributed file system manages the storage of files and directories using one or more directory groups. The directories may be managed using Byzantine-fault-tolerant groups, whereas files are managed without using Byzantine-fault-tolerant groups. Additionally, the file system may employ a hierarchical namespace to store files. Furthermore, the directory group may employ a plurality of locks to control access to objects (e.g., files and directories) in each directory.

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