Facsimile Transmission Mode Adaptation via Delivery Confirmation Feedback
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Solution Overview
Problem
Conventional facsimile apparatuses using ITU-T recommendation T.37 simple-mode for Internet facsimile transmission lack capacity negotiating procedures, leading to inefficient data transmission with default parameters, increased network load, and higher communication costs due to inability to determine the receiving end's capabilities.
Innovation Solution
A facsimile apparatus with ITU-T recommendation T.37 full-mode functionality that stores and utilizes reception capacity information from delivery confirmation mails to adapt transmission modes, enabling efficient image file transmission by associating mail addresses with reception capacity information and switching between default and custom parameters as needed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If ITU-T recommendation T.37 simple-mode is used for Internet facsimile transmission, then image data transmission can be carried out via the Internet, but the function of the transmission destination cannot be ascertained before facsimile communication
Solution Approach 1:
The patent applies preliminary action by sending a delivery confirmation request before the actual image transmission to ascertain the transmission destination's reception capacity. This preliminary inquiry allows the transmitting end to determine compatible functions and compression methods before committing to the full transmission, resolving the information loss problem while maintaining Internet facsimile capability.
2Productivity
If default parameters (A4/200 dpi or 200×100 dpi/MH) are used for transmission, then transmission can proceed without capacity negotiation, but the amount of transmission data increases and network load increases
Solution Approach 1:
The patent implements feedback by receiving delivery confirmation mails from the transmission destination that contain reception capacity information. This feedback loop allows the transmitting end to adjust transmission parameters based on actual destination capabilities, optimizing both transmission speed and network load by avoiding unnecessary data transmission when higher compression methods are supported.
3Measurement precision
If ITU-T recommendation T.37 full-mode is used to provide delivery confirmation mail with reception capacity information, then accurate transmission mode selection is enabled, but user registration processes are required
Solution Approach 1:
The patent applies self-service by enabling the transmission destination to automatically provide reception capacity information in delivery confirmation mails without requiring manual user registration or configuration. The system automatically utilizes this information for optimal transmission mode selection, eliminating the need for user intervention while maintaining accurate capacity knowledge.
4Productivity
If compression method is selected based on assumed destination capabilities, then transmission efficiency improves, but transmission failures occur when assumptions are incorrect
Solution Approach 1:
The patent implements dynamics by making the transmission mode selection adaptive rather than static. The system dynamically adjusts compression methods and transmission parameters based on actual reception capacity information obtained from delivery confirmation mails, allowing optimal performance to be achieved automatically while avoiding transmission failures caused by incorrect assumptions about destination capabilities.
Data Source
AI summary
A facsimile apparatus is disclosed that performs accurate and efficient facsimile transmission while obtaining accurate reception capacity information of each transmission destination. The reception capacity of each transmission destination is stored, together with the mail address, in a memory unit of the apparatus. When facsimile transmission accompanied by a delivery confirmation request is carried out, a main controlling unit causes the memory unit to store the transmission mode. If delivery confirmation mail from the transmission destination contains reception capacity information, the main controlling unit causes the memory unit to store it as the reception capacity information of the transmission destination. If the delivery confirmation mail does not contain reception capacity information but confirms that the communication has been properly completed, the transmission mode already stored in the memory unit is stored as a transmission enabling mode of the transmission destination in the memory unit.