Group Code Call Filtering for Mobile Terminals
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Solution Overview
Problem
Users face challenges in managing unwanted phone calls, particularly during specific times or when they don't want to be disturbed, as existing solutions like disconnecting fixed phones or using secretary services are inconvenient or costly, and call filtering methods are limited and complex.
Innovation Solution
Implementing a group code system where called users set specific group codes for their terminals, allowing only authorized callers with the correct group code to establish connections, thereby controlling incoming calls without changing their phone numbers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If the user turns off the terminal equipment to avoid unwanted calls, then the user is not disturbed by incoming calls, but the user cannot receive any calls including important ones
Solution Approach 1:
The patent applies local quality by differentiating between different types of calls. Instead of treating all calls uniformly, the system assigns different group codes to different calling parties, allowing the user to selectively accept or reject calls based on their importance. The terminal equipment maintains call reception capability while applying different filtering rules to different callers.
Solution Approach 2:
The system performs preliminary action by pre-configuring group codes for different calling parties before the actual call arrives. The user can set up authorized group codes in advance, so when a call comes in, the system automatically compares the caller's group code against the authorized list and makes the acceptance decision without requiring the user to manually evaluate each call's importance.
2Object-affected harmful factors
If the user uses secretary service to filter calls, then unwanted calls are converted to messages, but the service is paid and messages may be delayed or lost
Solution Approach 1:
The patent extracts the essential filtering function from the paid secretary service and implements it directly in the terminal equipment through group code verification. Instead of relying on external secretary services that convert calls to messages, the system performs the filtering locally at the terminal, maintaining real-time call capability for authorized users while blocking unwanted calls, thus eliminating message delay and loss issues.
3Object-affected harmful factors
If the user sets up whitelist or blacklist for call filtering, then some unwanted calls are blocked, but the maintenance is complicated and authorized numbers are limited
Solution Approach 1:
The patent applies universality by using group codes that can serve multiple purposes. Instead of maintaining separate whitelist and blacklist, the system uses a single group code mechanism that can authorize or block calls based on the provided code. This unified approach simplifies maintenance while providing flexible control over different types of callers.
Solution Approach 2:
The system inverts the traditional whitelist/blacklist approach by using positive authorization through group codes. Instead of maintaining a list of allowed numbers (whitelist) or blocked numbers (blacklist), the system requires callers to provide an authorized group code. This inversion simplifies the system by focusing on what is authorized rather than what is blocked, reducing maintenance complexity.
Data Source
AI summary
The present invention discloses a method for controlling a process of establishing a call, comprising: setting group codes in a called terminal; sending a calling number and a corresponding group code to the called terminal; the called terminal determining whether the received group code is one of the group codes set in the called terminal, if the received group code is one of the group codes set in the called terminal, allowing a call to be established between the calling terminal corresponding to the calling number and the called terminal, otherwise, refusing the call. According to one aspect of the invention, the called user enables a function of group code call when he does not want to be disturbed by frequent calls. So the called user will not be disturbed by unimportant calls or harassing calls while simultaneously the called user will not miss any important call.