Vehicle Multi-Master Ring Buffers for Collision-Free Common Block Access

The patent implements a preliminary arbitration mechanism where master devices register their access requests with the slave device before actual access occurs. The slave device maintains a registration table that records which master devices want to access the common block and their priority levels. This preliminary registration and arbitration process prevents collisions by establishing an access order before simultaneous access attempts occur, thereby maintaining system independence while eliminating processing delays.

The patent implements a dynamic priority arbitration mechanism where the access order is not fixed but can change based on urgency. The slave device evaluates the priority levels of waiting master devices and dynamically adjusts the access sequence. When an urgent function is detected, the corresponding master device can be granted immediate access regardless of its position in the registration order. This dynamic adjustment maintains collision prevention while enabling fast execution of urgent functions.

The patent implements a universal arbitration mechanism where a single slave device with a registration table and priority evaluation logic serves multiple master devices. Instead of requiring separate dedicated buffers for each master, the slave device universally handles access requests from any number of masters through a standardized arbitration process. This multi-functional approach ensures master independence through proper arbitration while keeping the logic size constant regardless of the number of masters, avoiding the complexity increase that would result from individual dedicated buffers for each master.