公开(公告)号：US20210357330A1

公开(公告)日：2021-11-18

申请号：US17388566

申请日：2021-07-29

Applicant: Sling Media Pvt. Ltd.

Inventor： Amit Kumar ,  Gopikumar Ranganathan

IPC: G06F12/0842 ,  G06F12/0815 ,  G06F3/06 ,  G06F5/12

Abstract: Novel techniques are described for lock-free sharing of a circular buffer. Embodiments can provide shared, lock-free, constant-bitrate access by multiple consumer systems to a live stream of audiovisual information being recorded to a circular buffer by a producer. For example, when a producer system writes a data stream to the circular buffer, the producer system records shared metadata. When a consumer system desires to begin reading from the shared buffer at a particular time, the shared metadata is used to compute a predicted write pointer location and corresponding dirty region around the write pointer at the desired read time. A read pointer of the consumer system can be set to avoid the dirty region, thereby permitting read access to a stable region of the circular buffer without relying on a buffer lock.

公开(公告)号：US20210109857A1

公开(公告)日：2021-04-15

申请号：US16707056

申请日：2019-12-09

Applicant: Sling Media Pvt. Ltd.

Inventor： Amit Kumar ,  Gopikumar Ranganathan

IPC: G06F12/0842 ,  G06F12/0815

Abstract: Novel techniques are described for lock-free sharing of a circular buffer. Embodiments can provide shared, lock-free, constant-bitrate access by multiple consumer systems to a live stream of audiovisual information being recorded to a circular buffer by a producer. For example, when a producer system writes a data stream to the circular buffer, the producer system records shared metadata. When a consumer system desires to begin reading from the shared buffer at a particular time, the shared metadata is used to compute a predicted write pointer location and corresponding dirty region around the write pointer at the desired read time. A read pointer of the consumer system can be set to avoid the dirty region, thereby permitting read access to a stable region of the circular buffer without relying on a buffer lock.

公开(公告)号：US20210014386A1

公开(公告)日：2021-01-14

申请号：US17037353

申请日：2020-09-29

Applicant: Sling Media Pvt. Ltd.

Inventor： Amit Kumar

IPC: H04N5/04 ,  H04L7/00 ,  H04N21/218 ,  H04N21/8547 ,  H04N21/242 ,  H04N21/43 ,  H04N21/845 ,  H04N21/234

Abstract: A system includes a processor and a memory. The memory stores instructions executable by the processor to receive first and second media units with respective first and second time stamps that are assigned based on a first clock cycle time and a data transmission rate, and to assign an adjusted time stamp to the second media unit based on the first clock cycle time, a second clock cycle time, the first time stamp, and the data transmission rate.