Shooting Terminal Dual-Mode Bluetooth Communication Control
Solution Overview
Problem
In digital camera systems with multiple cameras connected via a communication network, existing methods for transmitting shooting instructions lack effective retransmission controls, leading to issues where some cameras may not receive instructions and fail to capture images due to communication errors.
Innovation Solution
The shooting terminal employs a dual-mode communication strategy using Bluetooth protocol, initially transmitting specific and non-specific broadcast packets to establish connections, where it ignores repeated instructions after an initial reception period to prevent repeated processing and confirm successful image capture.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the shooting terminal continuously responds to all broadcast transmission packets, then communication reliability is improved, but communication congestion increases and processing efficiency decreases
Solution Approach 1:
The shooting terminal dynamically switches between passive scan mode and active scan mode based on connection status. In passive scan mode, it does not respond to broadcast packets to avoid congestion. In active scan mode, it responds to establish connections. This dynamic adjustment resolves the contradiction between reliability and processing efficiency.
Solution Approach 2:
The communication process is segmented into two distinct phases: connection establishment phase (active scan mode with responses) and normal operation phase (passive scan mode without responses). This segmentation allows the system to achieve both high reliability during connection setup and high processing efficiency during normal operation.
2Productivity
If the shooting terminal enters passive scan mode to avoid communication congestion, then processing efficiency is improved, but connection establishment reliability deteriorates
Solution Approach 1:
The shooting terminal performs preliminary connection establishment through active scan mode before switching to passive scan mode. This preliminary action ensures reliable connection setup while maintaining high processing efficiency during subsequent normal operation.
Solution Approach 2:
The terminal dynamically transitions from active scan mode to passive scan mode after connection is established. This dynamic behavior ensures reliable connection establishment initially, then maintains high processing efficiency during normal operation.
3Reliability
If the shooting terminal responds to all broadcast packets including specific shooting instruction packets, then instruction delivery reliability is improved, but unnecessary processing increases
Solution Approach 1:
The patent extracts and filters out specific broadcast transmission packets containing shooting instructions from the general broadcast packet stream. The terminal processes only these specific packets while ignoring others, eliminating unnecessary processing while ensuring reliable instruction delivery.
Solution Approach 2:
Different packet types are treated with different response qualities. Specific broadcast packets containing shooting instructions receive full processing and responses, while other broadcast packets are ignored. This local differentiation of processing quality eliminates waste while maintaining reliability for critical instructions.
Data Source
AI summary
A shooting terminal configured to shoot in response to a shooting instruction transmitted from a shooting instruction terminal, includes a processor; and a communication device, at a first time when a specific broadcast transmission packet is received by the communication device, the processor starts a first mode in which a response to a broadcast transmission packet is not returned, controls the communication device to not to transmit packets at the data link level to the shooting instruction terminal in response to the broadcast transmission packets, starts a second mode in which a response to the broadcast transmission packet is returned at a second time after the first time, and controls the communication device to transmit a packet at the data link level to the shooting instruction terminal in response to the non-specific broadcast transmission packet.