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International application No. Applicant's or agent's file reference
PCT/US2020/047243 2018-1899-00PCT
International filing date (day/month/year) (Earliest) Priority Date (day/month/year)
20 August 2020 27 August 2019
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.
6. Drawings
The figure of the drawings to be published with the abstract is Figure No.     1    
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 1/3234 (2019.01)i; G06F 1/3206 (2019.01)i; G06F 11/10 (2006.01)i
According to International Patent Classification (IPC) or to both national classification and IPC


Minimum documentation searched (classification system followed by classification symbols):
     G06F 1/3234 (2019.01); G06F 11/07 (2006.01); G11C 11/402 (2006.01); G11C 11/406 (2006.01); G11C 29/42 (2006.01); G11C 5/14 (2006.01); H04L 1/00 (2006.01)
Documentation searched other than minimum documentation to the extent that such documents are included in the fields searched:
Korean utility models and applications for utility models
Japanese utility models and applications for utility models
Electronic data base consulted during the international search (name of data base and, where practicable, search terms used):
eKOMPASS(KIPO internal) & Keywords: power, optimization, memory, bit, error


Category* Citation of document, with indication, where appropriate, of the relevant passages Relevant to claim No.
US 2015-0332735 A1 (QUALCOMM INCORPORATED) 19 November 2015 (2015-11-19)
paragraph [0045], [0051]; claims 1,3,7; and figures 1-3
KR 10-2010-0117134 A (INTEL CORPORATION) 02 November 2010 (2010-11-02)
paragraphs [0020]-[0027]; and figures 1-3
KR 10-2010-0065446 A (SAMSUNG ELECTRONICS CO., LTD.) 17 June 2010 (2010-06-17)
claims 1-3; and figure 4
KR 10-2016-0120935 A (UNIVERSITY-INDUSTRY COOPERATION GROUP OF) 19 October 2016 (2016-10-19)
KYUNG HEE UNIVERSITY) 19 October 2016 paragraphs [0033]-[0044]; and figures 1a-1b
JP 2010-050955 A (INTEL CORP.) 04 March 2010 (2010-03-04)
claims 1-4; and figures 2-3
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 2015-0332735 A1
19 November 2015
US 9633698 B2
WO 2015-175152 A1
25 April 2017
19 November 2015
KR 10-2010-0117134 A
02 November 2010
CN 101960532 A
CN 101960532 B
EP 2266116 A2
EP 2266116 B1
KR 10-1203764 B1
US 2009-0249169 A1
US 8161356 B2
WO 2009-121022 A2
WO 2009-121022 A3
26 January 2011
04 June 2014
29 December 2010
27 July 2016
21 November 2012
01 October 2009
17 April 2012
01 October 2009
07 January 2010
KR 10-2010-0065446 A
17 June 2010
KR 10-1578789 B1
18 December 2015
KR 10-2016-0120935 A
19 October 2016
KR 10-1679509 B1
06 December 2016
JP 2010-050955 A
04 March 2010
CN 101626352 A
CN 101626352 B
JP 5010643 B2
US 2010-0002758 A1
US 2012-0294379 A1
US 2014-0233622 A1
US 8233551 B2
US 8638866 B2
US 9106373 B2
13 January 2010
12 March 2014
29 August 2012
07 January 2010
22 November 2012
21 August 2014
31 July 2012
28 January 2014
11 August 2015
Name and mailing address of the ISA/:
Korean Intellectual Property Office
189 Cheongsa-ro, Seo-gu, Daejeon, 35208
Republic of Korea
Facsimile No. +82-42-481-8578
Date of the actual completion of the international search:
24 November 2020
Date of mailing of the international search report:
25 November 2020
Authorized officer:
BYUN, Sung Cheal
Telephone No. +82-42-481-8262
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