Master-Client Game System for Cross-Device Play

The patent introduces a server as an intermediary between multiple game devices. The server receives operation information from various devices, executes the game program centrally, and transmits application images back to the devices. This mediator approach allows devices with different programs to participate in the same game by routing operations through the server, resolving the contradiction between user accessibility and program uniformity requirements.

Instead of requiring each device to have the complete game program, the patent uses copying by transmitting the application image (visual output) from the server to multiple devices. Each device only needs a simple client program to receive and display the copied application image, eliminating the need for complex program replication on each device while maintaining shared gaming experience.

The patent merges the game execution function into a single master device that handles all game logic and rendering centrally. By combining the execution of the game program with the generation of application images, the system avoids the need for each client device to independently execute the full game program, thereby reducing the cumulative transmission load while supporting multiple participants.

The patent segments the system into a master device that performs complex execution tasks and client devices that handle only simple image reception and display. This segmentation divides the workload such that the master device bears the computational burden while client devices consume minimal resources, managing transmission load through functional separation rather than uniform distribution.

The patent applies local quality by differentiating the communication requirements of different device types. Client devices transmit only essential operation information (such as button presses or simple commands) to the master device, while the master device handles the complex game logic locally. This localized approach minimizes the amount of data transmitted across the network while maintaining real-time interaction capability.

The patent extracts the complex game execution functions from individual devices and concentrates them in the master device. By taking out the computational burden from client devices and placing it centrally, the system reduces the communication overhead required for real-time interaction, as only simple operation information needs to be transmitted rather than complete game state data from each device.