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1. CN112352242 - A DATA PROCESSING ACCELERATOR HAVING A LOCAL TIME UNIT TO GENERATE TIMESTAMPS

Office
China
Application Number 201980037261.1
Application Date 04.01.2019
Publication Number 112352242
Publication Date 09.02.2021
Publication Kind A
IPC
G06F 21/72
GPHYSICS
06COMPUTING; CALCULATING OR COUNTING
FELECTRIC DIGITAL DATA PROCESSING
21Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
70Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer
71to assure secure computing or processing of information
72in cryptographic circuits
CPC
G06F 21/606
GPHYSICS
06COMPUTING; CALCULATING; COUNTING
FELECTRIC DIGITAL DATA PROCESSING
21Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
60Protecting data
606by securing the transmission between two devices or processes
G06F 21/725
GPHYSICS
06COMPUTING; CALCULATING; COUNTING
FELECTRIC DIGITAL DATA PROCESSING
21Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
70Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer
71to assure secure computing or processing of information
72in cryptographic circuits
725operating on a secure reference time value
G06F 1/08
GPHYSICS
06COMPUTING; CALCULATING; COUNTING
FELECTRIC DIGITAL DATA PROCESSING
1Details not covered by groups G06F3/00G06F13/00 and G06F21/00
04Generating or distributing clock signals or signals derived directly therefrom
08Clock generators with changeable or programmable clock frequency
G06F 1/10
GPHYSICS
06COMPUTING; CALCULATING; COUNTING
FELECTRIC DIGITAL DATA PROCESSING
1Details not covered by groups G06F3/00G06F13/00 and G06F21/00
04Generating or distributing clock signals or signals derived directly therefrom
10Distribution of clock signals ; , e.g. skew
G06F 9/3877
GPHYSICS
06COMPUTING; CALCULATING; COUNTING
FELECTRIC DIGITAL DATA PROCESSING
9Arrangements for program control, e.g. control units
06using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
30Arrangements for executing machine instructions, e.g. instruction decode
38Concurrent instruction execution, e.g. pipeline, look ahead
3877using a slave processor, e.g. coprocessor
H04L 67/142
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
67Network-specific arrangements or communication protocols supporting networked applications
14for session management
142provided for managing session state for stateless protocols; Signalling a session state; State transitions; Keeping-state mechanisms
Applicants BAIDU.COM TIMES TECHNOLOGY (BEIJING) CO., LTD.
百度时代网络技术(北京)有限公司
BAIDU USA LLC
百度(美国)有限责任公司
Inventors LIU YONG
刘勇
CHENG YUEQIANG
程越强
OUYANG JIAN
欧阳剑
WEI TAO
韦韬
Agents 北京英赛嘉华知识产权代理有限责任公司 11204
北京英赛嘉华知识产权代理有限责任公司 11204
Title
(EN) A DATA PROCESSING ACCELERATOR HAVING A LOCAL TIME UNIT TO GENERATE TIMESTAMPS
(ZH) 具有本地时间单元以生成时间戳的数据处理加速器
Abstract
(EN)
A DP accelerator (405) includes one or more execution units (EUs) configured to perform data processing operations in response to an instruction received from a host system coupled over a bus. The DPaccelerator (405) includes a security unit (1020) configured to establish and maintain a secure channel with the host system to exchange commands and data associated with the data processing operations. The DP accelerator (405) includes a time unit (2003) coupled to the security unit (1020) to provide timestamp services to the security unit (1020), where the time unit (2003) includes a clock generator to generate clock signals locally without having to derive the clock signals from an external source. The time unit includes a timestamp generator coupled to the clock generator to generate a timestamp based on the clock signals, and a power supply to provide power to the clock generator and the timestamp generator.

(ZH)
DP加速器(405)包括一个或多个执行单元(EU),被配置为:响应于从通过总线联接的主机系统接收指令来执行数据处理操作。该DP加速器(405)包括:安全单元(1020),被配置为:建立并维护与主机系统的安全信道,以交换与数据处理操作相关联的命令和数据。该DP加速器(405)包括:时间单元(2003),联接到安全单元(1020),以向安全单元(1020)提供时间戳服务,其中,时间单元(2003)包括:时钟发生器,用于在本地生成时钟信号,而不必从外部源获取时钟信号。该时间单元包括:时间戳生成器,联接到时钟生成器,以基于时钟信号生成时间戳;以及电源,向时钟发生器和时间戳发生器供电。

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