公开(公告)号：US11122327B2

公开(公告)日：2021-09-14

申请号：US16892033

申请日：2020-06-03

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Chiranjib Chakraborty ,  Huamin Luo ,  Zhitao Wang ,  Ning Li

IPC: H04N9/80 ,  H04N21/434 ,  H04N21/2347 ,  H04N21/4147 ,  H04N21/433

Abstract: This application discloses a video recording apparatus and a video recording method. The video recording apparatus includes a first demultiplexer, configured to: separate program information, audio data, and video data from a transport stream; a marker, configured to: mark the separated audio data and the separated video data, and transmit a mixed stream to an encryption processor, where the mixed stream includes the program information, the marked audio data, and the marked video data; and the encryption processor, configured to: identify the marked audio data and the marked video data in the mixed stream, encrypt the identified audio data and the identified video data to obtain encrypted audio data and encrypted video data, and transmit the encrypted audio data, the encrypted video data, and the program information to a memory in a rich execution environment REE for storage, so as to implement video recording.

公开(公告)号：US10664624B2

公开(公告)日：2020-05-26

申请号：US16027771

申请日：2018-07-05

Applicant: Huawei Technologies Co., Ltd.

Inventor： Huamin Luo ,  Chiranjib Chakraborty ,  Shangsong Chen

IPC: G06F21/84 ,  G06F21/10 ,  H04N21/4367 ,  H04N21/4363 ,  H04N21/4627 ,  H04N21/254 ,  H04N21/4405

Abstract: A method and an apparatus for controlling video output, where the method includes detecting in real time, by a security controller, whether an output resolution configured in a video display controller and a high-bandwidth digital content protection (HDCP) encryption status configured in a high-definition multimedia interface (HDMI) satisfy an HDCP requirement of a video, and when the HDCP requirement of the video is not satisfied, sending, by the security controller, an instruction to the video display controller instructing the video display controller to stop outputting the video. Hence, when the HDCP requirement of the video is not satisfied the output video is insecure such that the security controller sends the instruction to the video display controller instructing the video display controller to stop outputting the video. Therefore, security of the video output is ensured.

公开(公告)号：US20180330128A1

公开(公告)日：2018-11-15

申请号：US16027771

申请日：2018-07-05

Applicant: Huawei Technologies Co., Ltd.

Inventor： Huamin Luo ,  Chiranjib Chakraborty ,  Shangsong Chen

IPC: G06F21/84 ,  G06F21/10 ,  H04N21/254 ,  H04N21/4405

Abstract: A method and an apparatus for controlling video output, where the method includes detecting in real time, by a security controller, whether an output resolution configured in a video display controller and a high-bandwidth digital content protection (HDCP) encryption status configured in a high-definition multimedia interface (HDMI) satisfy an HDCP requirement of a video, and when the HDCP requirement of the video is not satisfied, sending, by the security controller, an instruction to the video display controller instructing the video display controller to stop outputting the video. Hence, when the HDCP requirement of the video is not satisfied the output video is insecure such that the security controller sends the instruction to the video display controller instructing the video display controller to stop outputting the video. Therefore, security of the video output is ensured.