This month's cloud gaming and streaming category includes 3 filed patent applications from Realtek Semiconductor, Adeia, and InterDigital CE Patent Holdings, SAS, with 1 patent from each company.
The applications address compression and latency challenges in cloud gaming systems. InterDigital CE Patent Holdings, SAS describes a codec that incorporates game engine camera data to improve compression efficiency by tagging video blocks with motion information. Adeia's application covers adaptive quantization parameter control to prevent bitrate spikes during scene changes, while Realtek Semiconductor's patent details a feedback system that adjusts encoder settings based on real-time playback quality metrics from terminal devices.
InterDigital CE Patent Holdings, SAS received 1 patent that leverages internal game engine data to improve video compression for cloud gaming. The method extracts camera parameters and depth maps directly from the game engine, then uses this information to tag video blocks with motion metadata that distinguishes between camera movement and object movement. This approach bypasses the computationally intensive motion estimation process that conventional codecs rely on, reducing encoder latency when camera motion dominates the scene.
Adeia received 1 patent addressing the bitrate spikes that occur during scene changes in cloud gaming streams. The application describes a preventive rate control system that detects when a bitrate overrun is imminent and applies graduated quantization parameter adjustments or frame modifications before a stall happens. This prevents the cascading failure mode where a dropped frame triggers a large IDR recovery frame that may itself exceed bandwidth capacity and get dropped, creating a cycle of playback interruptions.
Realtek Semiconductor received 1 patent establishing a closed-loop feedback system between client devices and cloud gaming servers. A playback quality evaluation unit on the terminal side measures actual rendering conditions and sends this data to a paired feedback engine on the server, which calculates optimal encoder parameter adjustments in real time. This architecture allows encoding decisions to be based on observed client-side playback quality rather than relying solely on network bandwidth estimates.
All data sourced from USPTO patent filings. Google Patents may take several weeks to index recent publications. If a link is unavailable, search for the patent number at USPTO Patent Public Search.