Radio-Based Digital Object Reading Control
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Solution Overview
Problem
Existing digital object distribution systems face challenges in controlling reading rights, particularly in defining time limits for use cases like moving vehicles or collective places, and require geographical location data, which is difficult to implement in mobile environments.
Innovation Solution
A reading control method that uses a transmitter device to allow playback only within its radio coverage zone, eliminating the need for terrestrial location means and ensuring the digital object is read within a defined area, with optional distance-based limitations and encryption for enhanced security.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If geographical location data (GPS, cell identifiers) is used to control reading rights, then reading can be limited to specific areas, but implementation becomes difficult in mobile environments such as moving vehicles
Solution Approach 1:
The patent replaces terrestrial geographical location means (GPS satellites, cellular network infrastructure) with a local radio frequency-based positioning system. The transmitter device emits radio signals that the user device receives to determine relative position, substituting complex satellite/m cellular infrastructure with a simple local radio system that works reliably in mobile environments.
Solution Approach 2:
The patent introduces a radio frequency signal as an intermediary between the transmitter device and user device for position determination. Instead of directly using GPS coordinates or cell tower data, the system uses radio signal characteristics (strength, presence) as a mediator to infer relative position and control reading rights, simplifying the implementation in mobile contexts.
2Reliability
If continuous geographical location monitoring is implemented to enforce reading rights, then reading control is achieved, but energy consumption increases significantly
Solution Approach 1:
The patent applies partial action by monitoring only the presence and signal strength of radio frequency signals from the transmitter device, rather than continuously tracking precise geographical coordinates. This partial monitoring approach provides sufficient reading control (within the radio coverage zone) while consuming significantly less energy than continuous GPS monitoring would require.
3Area of stationary object
If the reading zone is defined using terrestrial location means, then geographical area control is achieved, but the definition precision is insufficient for specific local areas
Solution Approach 1:
The patent changes the parameter basis for defining the reading zone from absolute geographical coordinates (latitude/longitude) to relative radio signal parameters (signal presence, signal strength). This parameter change enables precise zone definition tied to the actual radio coverage area of the transmitter device, accurately delimiting the intended reading location without relying on coarse geographical boundaries.
Data Source
Figure 1~2b
Figure 3
AI summary
The invention relates to a technique for controlling the reading of a digital object by a user device (2). The digital object is stored locally in the memory of the user device. The reading of the digital object is conditioned by receiving at least one radio communication channel transmitted by a transmitter device (1). An area for reading the digital object is thus located in the radio range of the transmitter device. Reading is blocked outside of this reading area.