Antenna Positioning via Dynamic Reference Image for Near Field Communication
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Solution Overview
Problem
Existing near field wireless communication systems face challenges in accurately positioning antennas between devices due to varying antenna positions across different types and models of communication apparatuses, leading to difficulties in establishing effective communication, especially when antennas are integrated into portable devices like smartphones.
Innovation Solution
A communication apparatus equipped with an antenna unit, a display unit on the opposite surface, a reference image acquisition unit, a reference image display control unit, and a reference image correction unit that obtains and corrects reference images based on communication apparatus identification information to align with target marks on external devices, ensuring accurate antenna positioning for near field wireless communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a mark indicating antenna position is provided on the device surface, then the user can locate the antenna position, but the mark becomes hidden when devices are brought close together for communication
Solution Approach 1:
The patent moves the antenna position information from the physical surface (2D) to a display screen (digital dimension), allowing the mark to be visible through transparency or semi-transparency during the communication process, thus resolving the contradiction between visibility and positioning guidance
2Measurement precision
If antenna position information is stored in each communication apparatus, then accurate positioning is possible, but providing this information to every type of communication apparatus becomes extremely difficult
Solution Approach 1:
The patent introduces a server as an intermediary that stores and manages antenna position information for various communication apparatus types. The server provides this information to devices as needed, eliminating the need to pre-load information into every device and simplifying the overall system complexity
Solution Approach 2:
The server serves multiple functions: storing antenna position information, providing it to different device types, and enabling accurate positioning across various communication apparatus without requiring individual customization of each device
3Ease of operation
If a fixed assist mark is displayed on the display apparatus, then the user can align the antennas, but the mark does not correctly indicate the antenna position due to individual differences in antenna positions
Solution Approach 1:
The patent makes the assist mark dynamic by adjusting its position on the display screen based on the specific antenna position information received from the server. This allows the mark to correctly indicate the antenna position for each device type while maintaining ease of alignment for the user
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This configuration enables precise alignment of antennas between communication apparatuses and external devices, enhancing the accuracy and reliability of near field wireless communication by using corrected reference images displayed on the apparatus.
Implementation Method 1
A communication apparatus according to an aspect of the present invention communicates with an external apparatus using near field wireless communication, and includes: an antenna unit that transmits and receives radio waves required for the near field wireless communication
Data Source
AI summary
A reference image acquisition unit (171) obtains a reference image for guiding a portable device (1) to a position in which near field wireless communication with a terminal device (2) is possible on the basis of portable device identification information for identifying a type of the portable device (1). A reference image display control unit (172) displays the reference image obtained by the reference image acquisition unit (171) on a display unit (12) provided on an opposite surface of the portable device (1) to a surface that opposes the terminal device (2) when the portable device (1) is brought close to the terminal device (2). A reference image correction unit (173) corrects a position of the reference image in response to an image moving operation for aligning the reference image displayed on the display unit (12) with a target mark formed on a front surface of the terminal device (2).