In-Vehicle Video Reception With Preselected Nearby Cameras
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Solution Overview
Problem
Existing in-vehicle systems experience delays in displaying camera videos from other vehicles due to user-initiated processing operations, leading to increased latency before the video is displayed.
Innovation Solution
An in-vehicle apparatus that pre-selects candidate cameras based on position information and establishes communication connections in advance, allowing for background video reception and display when predetermined conditions are met, such as the vehicle entering a traffic jam zone or setting a destination.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If user operation is required to start video reception and processing, then system control and user intent alignment are improved, but display latency increases
Solution Approach 1:
The system performs preliminary actions by automatically selecting candidate cameras and establishing communication connections before user request. The reception unit starts receiving video data in advance, and preprocessing operations (decompression, decoding) are executed beforehand, so that when the user requests video display, the data is already prepared and can be displayed immediately with minimal latency.
2Loss of time
If video reception and processing are started in advance, then display latency is reduced, but energy consumption and system resource usage increase
Solution Approach 1:
The system applies partial action by selectively receiving and preprocessing video data only from candidate cameras that are most likely to be requested by the user, rather than all available cameras. The selection unit identifies specific candidate cameras based on relevance criteria, and the reception unit establishes communication only with these selected candidates, reducing unnecessary energy consumption while still achieving low latency for anticipated user requests.
3Adaptability or versatility
If communication connection is established with multiple candidate cameras, then video availability is improved, but device complexity increases
Solution Approach 1:
The system segments the camera selection process into distinct stages: the selection unit first identifies candidate cameras based on position information and user context, then the reception unit establishes communication only with these segmented candidate cameras. This segmentation approach maintains video availability from multiple sources while reducing system complexity by limiting active connections to a manageable subset of cameras rather than all possible cameras simultaneously.
Data Source
AI summary
An in-vehicle apparatus includes: a selection unit configured to select at least one candidate camera from plural cameras based on position information of each of the plural cameras; a reception unit configured to establish communication connection with the candidate camera selected by the selection unit and to start to receive video captured by the candidate camera; and a display control unit configured to display the video received by the reception unit in response to a predetermined display condition being satisfied.