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1. (WO2018226295) AVOIDING LINK INTEGRITY FAILURES ON DISPLAYPORT DURING HCDP 2.2 BY USING SINK SIDE OPTIMIZATIONS
Latest bibliographic data on file with the International Bureau    Submit observation

Pub. No.: WO/2018/226295 International Application No.: PCT/US2018/024715
Publication Date: 13.12.2018 International Filing Date: 28.03.2018
IPC:
H04N 21/266 (2011.01) ,H04N 21/418 (2011.01) ,H04N 21/426 (2011.01) ,H04N 21/4405 (2011.01)
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
N
PICTORIAL COMMUNICATION, e.g. TELEVISION
21
Selective content distribution, e.g. interactive television, VOD [Video On Demand]
20
Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
25
Management operations performed by the server for facilitating the content distribution or administrating data related to end-users or client devices, e.g. end-user or client device authentication or learning user preferences for recommending movies
266
Channel or content management, e.g. generation and management of keys and entitlement messages in a conditional access system or merging a VOD unicast channel into a multicast channel
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
N
PICTORIAL COMMUNICATION, e.g. TELEVISION
21
Selective content distribution, e.g. interactive television, VOD [Video On Demand]
40
Client devices specifically adapted for the reception of, or interaction with, content, e.g. STB [set-top-box]; Operations thereof
41
Structure of client; Structure of client peripherals
418
External card to be used in combination with the client device, e.g. for conditional access
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
N
PICTORIAL COMMUNICATION, e.g. TELEVISION
21
Selective content distribution, e.g. interactive television, VOD [Video On Demand]
40
Client devices specifically adapted for the reception of, or interaction with, content, e.g. STB [set-top-box]; Operations thereof
41
Structure of client; Structure of client peripherals
426
Internal components of the client
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
N
PICTORIAL COMMUNICATION, e.g. TELEVISION
21
Selective content distribution, e.g. interactive television, VOD [Video On Demand]
40
Client devices specifically adapted for the reception of, or interaction with, content, e.g. STB [set-top-box]; Operations thereof
43
Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronizing decoder's clock; Client middleware
44
Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to MPEG-4 scene graphs
4405
involving video stream decryption
Applicants:
QUALCOMM INCORPORATED [US/US]; ATTN: International IP Administration 5775 Morehouse Drive San Diego, California 92121, US
Inventors:
GROVER, Ashish; US
HONGAL, Shivaprasad; US
MANOHAR, Bollapragada V.J.; US
Agent:
CLARK, T.J.; US
Priority Data:
15/618,10308.06.2017US
Title (EN) AVOIDING LINK INTEGRITY FAILURES ON DISPLAYPORT DURING HCDP 2.2 BY USING SINK SIDE OPTIMIZATIONS
(FR) ÉVITEMENT DE DÉFAILLANCES D'INTÉGRITÉ DE LIAISON SUR UN PORT D'AFFICHAGE PENDANT HCDP 2,2 PAR UTILISATION D'OPTIMISATIONS CÔTÉ RÉCEPTEUR
Abstract:
(EN) Techniques for operating a receiver are provided. An example method according to these techniques includes receiving a content type indicator from a transmitter indicating that a content stream from the transmitter comprises a first content type, performing a first integrity check on the content stream by decrypting content from the content stream based in part on the content type indicator, incrementing a counter responsive to the first integrity check failing due to a mismatch between the content type indicator and the content of the content stream, performing a second integrity check on the content stream by decrypting the content from the content stream based in part on a second content type responsive to the counter exceeding a threshold, and decrypting the content stream based in part on the second integrity check being successful.
(FR) L'invention concerne des techniques de fonctionnement d'un récepteur. Un procédé donné à titre d'exemple selon ces techniques comprend la réception d'un indicateur de type de contenu depuis un émetteur indiquant qu'un flux de contenu provenant de l'émetteur comprend un premier type de contenu, l'exécution d'une première vérification d'intégrité sur le flux de contenu par déchiffrement du contenu provenant du flux de contenu sur la base en partie de l'indicateur de type de contenu, l'incrémentation d'un compteur en réponse à l'échec de la première vérification d'intégrité provoquée par un mésappariement entre l'indicateur de type de contenu et le contenu du flux de contenu, l'exécution de la seconde vérification d'intégrité sur le flux de contenu par déchiffrement du contenu provenant du flux de contenu sur la base en partie d'un second type de contenu en réponse au dépassement d'un seuil du compteur, et le déchiffrement du flux de contenu sur la base en partie de l'aboutissement de la seconde vérification d'intégrité.
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Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)