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1. WO2020108574 - IMPROVING METHOD FOR TRANSFORM OR QUANTIZATION BYPASS MODE


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INTERNATIONAL SEARCH REPORT (ISR)
Part 1:  1  2  3  4  5  6          Part 2:  A  B  C  D  E 
International application No. Applicant's or agent's file reference
PCT/CN2019/121646 C19W5414
International filing date (day/month/year) (Earliest) Priority Date (day/month/year)
28 November 2019 28 November 2018
Applicant
BEIJING BYTEDANCE NETWORK TECHNOLOGY 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)).
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)).
c.
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
a.
The figure of the drawings to be published with the abstract is Figure No.     17    
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.
b.
none of the figures is to be published with the abstract.

A. CLASSIFICATION OF SUBJECT MATTER

According to International Patent Classification (IPC) or to both national classification and IPC

B. FIELDS SEARCHED

Minimum documentation searched (classification system followed by classification symbols):
     H04N
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):
CNABS,CNTXT,CNKI,VEN,WOTXT,IEEE: SCC, screen content coding, CPR, current picture reference, current image reference, IBC, intra block copy, transquant bypass, flag, transform, quantization, quantify, filtering, color component, luma, chroma, luminance, chrominance, partition tree, coding tree

C. DOCUMENTS CONSIDERED TO BE RELEVANT

Category* Citation of document, with indication, where appropriate, of the relevant passages Relevant to claim No.
(1)
X
Benjamin Bross et al., "High efficiency video coding (HEVC) text specification draft 6", Joint Collaborative Team on Video Coding (JCT-VC) of ITU-T SG16 WP3 and ISO/IEC JTC1/SC29/WG11 JCTVC-H1003,02 April 2012 (2012-04-02),
1-4, 8-9,12-20
sections 7.3.2.1, 7.4.2.1, 8.7.3
(2)
A
CN 107852499 A (MEDIATEK INC.) 27 March 2018 (2018-03-27)
1-20
the whole document
(3)
A
WO 2017206803 A1 (MEDIATEK INC.) 07 December 2017 (2017-12-07)
1-20
the whole document
(4)
A
WO 2015180166 A1 (MEDIATEK SINGAPORE PTE. LTD.) 03 December 2015 (2015-12-03)
1-20
the whole document
*
Special categories of cited documents:
"A"
document defining the general state of the art which is not considered to be of particular relevance
"D"
document cited by the applicant in the international application
"E"
earlier application or patent but published on or after the international filing date
"L"
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)
"O"
document referring to an oral disclosure, use, exhibition or other means
"P"
document published prior to the international filing date but later than the priority date claimed
"T"
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
"X"
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
"Y"
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

D. INFORMATION ON PATENT FAMILY MEMBERS

Patent document cited in search report Publication date
(day/month/year)
Patent family member(s) Publication date
(day/month/year)
CN 107852499 A
27 March 2018
EP 3269142 A4
US 2018131963 A1
KR 20170135886 A
US 2019373286 A1
WO 2016165623 A1
US 10432966 B2
CA 2981916 A1
EP 3269142 A1
24 October 2018
10 May 2018
08 December 2017
05 December 2019
20 October 2016
01 October 2019
20 October 2016
17 January 2018
WO 2017206803 A1
07 December 2017
VN 61751 A
CN 109076210 A
TW 201804796 A
US 2019222859 A1
EP 3449630 A1
IN 201827048778 A
EP 3449630 A4
25 February 2019
21 December 2018
01 February 2018
18 July 2019
06 March 2019
07 June 2019
27 November 2019
WO 2015180166 A1
03 December 2015
None
Name and mailing address of the ISA/:
National Intellectual Property Administration, PRC
6, Xitucheng Rd., Jimen Bridge, Haidian District, Beijing 100088
China
Facsimile No. (86-10)62019451
Date of the actual completion of the international search:
13 February 2020
Date of mailing of the international search report:
19 February 2020
Authorized officer:
WANG,Bo
Telephone No. 86-010-62089145
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