Mobile Terminal Mode Segmentation for Official Private Data Separation
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Solution Overview
Problem
Cellular phones with multiple functions face challenges in separating personal and official use, leading to security issues and mixing of personal and official data, as existing limitation functions do not effectively restrict non-business-related features during business hours.
Innovation Solution
A mobile terminal with multiple telephone number modes, where the CPU controls switching between official and private modes based on location detection, using GPS or non-contact IC, to limit access to functions and data storage accordingly, ensuring that only authorized functions and data are accessible during official use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple functions are added to cellular phones (camera, music reproduction, television reception), then the functionality and versatility of the device is improved, but the ability to separate personal and official use deteriorates, leading to mixing of personal and official affairs
Solution Approach 1:
The patent segments the cellular phone's functions and data into multiple distinct modes (first mode for official use, second mode for personal use). Each mode has its own set of available functions and data storage areas, physically separating official and personal affairs within the same device. This segmentation allows the phone to maintain high versatility while ensuring reliable separation through mode-based isolation.
2Reliability
If limitation functions are added to restrict operations, then the separation of personal and official use is improved, but the device complexity increases
Solution Approach 1:
The patent implements dynamic function availability based on the currently active mode. Functions are not statically restricted but dynamically enabled or disabled according to whether the phone is in first mode or second mode. This dynamic approach provides effective limitation without requiring complex static restriction mechanisms, as the system automatically adapts function availability to the current usage context.
Solution Approach 2:
The patent creates a universal mode-based control framework that manages multiple functions (camera, music, television, data access) through a single unified mechanism. Instead of implementing separate limitation functions for each feature, the mode system universally controls all functions, simplifying the overall device architecture while maintaining reliable separation.
3Ease of operation
If all functions are made available without restriction, then the ease of operation is improved, but the security problem arises from easy access to company files during private use
Solution Approach 1:
The patent applies preliminary action by pre-configuring function availability and data accessibility based on the selected mode before actual operations occur. When the user switches to first mode, only official functions and data are preliminarily made available, preventing any attempt at unauthorized access to personal files. This preliminary configuration ensures security is built-in rather than added as a post-hoc restriction.
Data Source
AI summary
In a cellular phone, when a coming-to-the-office signal is detected by a non-contact IC section, a CPU selects an official mode as a telephone number mode. Meanwhile, when a leaving-the-office signal is detected by the non-contact IC section, the CPU selects a private mode as a telephone number mode. In an application menu, applications usable and not usable in the current telephone number mode are displayed according to the availability mode added for the applications so that a user can identify these applications. Only the files corresponding with the current telephone number mode can be selected according to the mode identifier added for the file, or the type of the folder storing the file. Thereby, a plurality of processing functions included in the cellular phone, or many files stored therein can be automatically used selectively either on official use or on private use.