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International application No. Applicant's or agent's file reference
PCT/CN2019/070414 18A54750
International filing date (day/month/year) (Earliest) Priority Date (day/month/year)
04 January 2019
Applicant Times Technology (Beijing) Co., Ltd. et al
FOR FURTHER ACTION: See Form PCT/ISA/220 as well as, where applicable, item 5 below.
This international search report has been prepared by this International Searching Authority and is transmitted to the applicant according to Article 18. A copy is being transmitted to the International Bureau.
It is also accompanied by a copy of each prior art document cited in this report.
1. Basis of the report
a. With regard to the language, the international search was carried out on the basis of:
the international application in the language in which it was filed.
a translation of the international application into                                          which is the language of a translation furnished for the purposes of international search (Rules 12.3(a) and 23.1(b)).
This international search report has been established taking into account the rectification of an obvious mistake authorized by or notified to this Authority under Rule 91 (Rule 43.6bis(a)).
With regard to any nucleotide and/or amino acid sequence disclosed in the international application, the international search was carried out on the basis of a sequence listing:
2. Certain claims were found unsearchable
3. Unity of invention is lacking
4. Title of the invention
The text is approved as submitted by the applicant.
The text has been established by this Authority to read as follows:
5. Abstract
The text is approved as submitted by the applicant.
The text has been established, according to Rule 38.2, by this Authority as it appears in Box No. IV. The applicant may, within one month from the date of mailing of this international search report, submit comments to this Authority.

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 DP accelerator (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.

6. Drawings
The figure of the drawings to be published with the abstract is Figure No.     20    
as suggested by the applicant.
as selected by this Authority, because the applicant failed to suggest a figure.
as selected by this Authority, because this figure better characterizes the invention.
none of the figures is to be published with the abstract.


     G06F; 21/72(2013.01)i
According to International Patent Classification (IPC) or to both national classification and IPC


Minimum documentation searched (classification system followed by classification symbols):
Documentation searched other than minimum documentation to the extent that such documents are included in the fields searched:
Electronic data base consulted during the international search (name of data base and, where practicable, search terms used):
CNPAT,WPI,EPODOC,CNKI,GOOGLE:LIUYong,transaction,secur+,data,time, coprocessor,transmit+,sensitive,stamp,host,ai,accelerator,encrypt+


Category* Citation of document, with indication, where appropriate, of the relevant passages Relevant to claim No.
US 2007038853 A1 (RIVERBED TECHNOLOGY, INC.) 15 February 2007 (2007-02-15)
description, paragraphs [0032]-[0043]
US 2013077641 A1 (JR., HARLEY F.BURGER) 28 March 2013 (2013-03-28)
description, paragraphs [0024]-[0041], [0082]
US 2005210280 A1 (NOKIA CORP.) 22 September 2005 (2005-09-22)
the whole document
CN 101098225 A (CHINA UNIONPAY CO., LTD.) 02 January 2008 (2008-01-02)
the whole document
Special categories of cited documents:
document defining the general state of the art which is not considered to be of particular relevance
document cited by the applicant in the international application
earlier application or patent but published on or after the international filing date
document which may throw doubts on priority claim(s) or which is cited to establish the publication date of another citation or other special reason (as specified)
document referring to an oral disclosure, use, exhibition or other means
document published prior to the international filing date but later than the priority date claimed
later document published after the international filing date or priority date and not in conflict with the application but cited to understand the principle or theory underlying the invention
document of particular relevance; the claimed invention cannot be considered novel or cannot be considered to involve an inventive step when the document is taken alone
document of particular relevance; the claimed invention cannot be considered to involve an inventive step when the document is combined with one or more other such documents, such combination being obvious to a person skilled in the art
document member of the same patent family


Patent document cited in search report Publication date
Patent family member(s) Publication date
US 2007038853 A1
15 February 2007
JP 2012186818 A
JP 2009505493 A
CN 101292233 A
IL 189388 A
WO 2007021483 A2
AU 2006280301 A1
IN 200800855 P4
EP 1904931 A2
27 September 2012
05 February 2009
22 October 2008
30 May 2013
22 February 2007
22 February 2007
28 November 2008
02 April 2208
US 2013077641 A1
28 March 2013
CN 103023639 A
DE 102012216604 A1
03 April 2013
28 March 2013
US 2005210280 A1
22 September 2005
EP 3462366 A1
KR 20060127205 A
CN 1961268 A
EP 1725924 A1
WO 2005091109 A1
03 April 2019
11 December 2006
09 May 2007
29 November 2006
29 September 2005
CN 101098225 A
02 January 2008
Name and mailing address of the ISA/:
National Intellectual Property Administration, PRC
6, Xitucheng Rd., Jimen Bridge, Haidian District, Beijing 100088
Facsimile No. (86-10)62019451
Date of the actual completion of the international search:
18 September 2019
Date of mailing of the international search report:
08 October 2019
Authorized officer:
Telephone No. 86-(10)-53961337
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