公开(公告)号：US10681431B2

公开(公告)日：2020-06-09

申请号：US15662360

申请日：2017-07-28

Applicant: Cisco Technology, Inc.

Inventor： Thomas Levy ,  Dan Ariel Elbert ,  Doron Tzur ,  Gilad Taub ,  Keith Millar

IPC: H04N21/845 ,  H04N21/234 ,  H04N21/2381 ,  H04N21/6587 ,  H04N21/472 ,  H04N21/2343

Abstract: Server-side trick mode restrictions in a stream may be provided. The stream may comprise, for example, a Video on Demand (VOD) Adaptive Bitrate (ABR) stream. First, a playlist request corresponding to a stream may be received from a user device. Next, a current stream position in the stream may be determined. In response to receiving the playlist request and when the current stream position corresponds to a non-skip segment, a playlist may be created having a last chunk comprising a next chunk of the stream from the current stream position. The playlist may then be provided to the user device.

公开(公告)号：US10547447B2

公开(公告)日：2020-01-28

申请号：US15694883

申请日：2017-09-04

Applicant: Cisco Technology, Inc.

Inventor： Benyamin Hirschberg ,  Yaron Sella ,  Gilad Taub

IPC: H04L29/06 ,  H04L9/08 ,  H04L9/06

Abstract: In one embodiment, a first apparatus includes a processor and an interface, wherein the interface is operative to receive a request from a second apparatus to commence a keyed-hash message authentication code (HMAC) computation, the processor is operative to perform a first computation computing a first part of the HMAC computation using a secret key K as input yielding a first value, the interface is operative to send the first value to the second apparatus, the interface is operative to receive a second value from the second apparatus, the second value resulting from the second apparatus processing the first value with at least part of a message M, the processor is operative to perform a second computation based on the second value and the secret key K yielding an HMAC value, and the interface is operative to send the HMAC value to the second apparatus.

公开(公告)号：US20180220202A1

公开(公告)日：2018-08-02

申请号：US15662360

申请日：2017-07-28

Applicant: Cisco Technology, Inc.

Inventor： Thomas Levy ,  Dan Ariel Elbert ,  Doron Tzur ,  Gilad Taub ,  Keith Millar

IPC: H04N21/845 ,  H04N21/234 ,  H04N21/2381 ,  H04N21/6587 ,  H04N21/472

CPC classification number: H04N21/8453 ,  H04N21/23418 ,  H04N21/23424 ,  H04N21/234327 ,  H04N21/2381 ,  H04N21/47202 ,  H04N21/6587 ,  H04N21/8456

Abstract: Server-side trick mode restrictions in a stream may be provided. The stream may comprise, for example, a Video on Demand (VOD) Adaptive Bitrate (ABR) stream. First, a playlist request corresponding to a stream may be received from a user device. Next, a current stream position in the stream may be determined. In response to receiving the playlist request and when the current stream position corresponds to a non-skip segment, a playlist may be created having a last chunk comprising a next chunk of the stream from the current stream position. The playlist may then be provided to the user device.