Invention Application
- Patent Title: METHODS AND APPARATUS FOR STREAMING MEDIA CONVERSION WITH REDUCED BUFFERING MEMORIES
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Application No.: US16230930Application Date: 2018-12-21
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Publication No.: US20200021633A1Publication Date: 2020-01-16
- Inventor: SHOICHIRO SENGOKU , Anup K. Sharma , Andrew Kenneth John McMahon
- Applicant: Apple Inc.
- Main IPC: H04L29/06
- IPC: H04L29/06 ; G06F13/16 ; G06F13/42

Abstract:
Methods and apparatus for converting streaming media between different formats. A bridging device for e.g., Camera Serial Interface (CSI) and DisplayPort is disclosed. Both the CSI and DisplayPort technologies use low power mode operation during blanking intervals of a video transmission. However, the CSI interface can wake up in a very short amount of time (e.g., ˜400 ns), but the DisplayPort interface takes significantly longer to perform link training (e.g., ˜1 ms). Various embodiments of the present disclosure use frame signaling trigger to start a wait time interval timer; the wait time interval can be used by the bridge device to wake up the DisplayPort interface ahead of the CSI2 D-PHY interface, thereby ensuring that both links are active at the same time. This “wake-up” technique can greatly reduce the size of buffering memories that are required.
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