Scanner Audio Porting via Logical Device Segmentation
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Solution Overview
Problem
Transaction terminals often experience audio issues due to the integrated speaker's location and orientation, leading to muffled or inaudible sound, which can impact transaction feedback and be particularly problematic for visually impaired customers.
Innovation Solution
A system and method that configures a scanner as two separate devices, including a speaker, to provide clear and audible audio from a host device, allowing the scanner's integrated speaker to be used as a primary or secondary speaker, with firmware supporting volume adjustment and sound settings, via wired or wireless connections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the speaker is integrated into the display, then the device complexity is reduced, but the sound quality and audibility deteriorate due to location and orientation issues
Solution Approach 1:
The system separates the audio output function from the display device by presenting the scanner as two independent devices: the scanner itself and an auxiliary speaker. This segmentation allows the speaker to be positioned optimally for sound delivery while the display maintains its operational position, resolving the conflict between device simplicity and audio quality
Solution Approach 2:
The scanner device is given multiple functions by integrating both scanning capabilities and audio output through the auxiliary speaker. The single physical device performs dual roles, eliminating the need for separate audio equipment while maintaining audio quality through proper speaker positioning and orientation
2Reliability
If the display orientation is changed to improve sound direction, then the sound audibility improves, but the ease of operation with the touch display deteriorates
Solution Approach 1:
By separating the audio output function into an independent auxiliary speaker, the system allows the display to maintain its optimal orientation for touch interaction while the speaker is positioned and oriented separately for optimal sound delivery, eliminating the need to compromise either function
3Reliability
If a separate speaker is used, then the sound quality improves, but the device complexity increases
Solution Approach 1:
The scanner device is configured to present itself as two independent devices to the host, combining scanning and audio output functions in a single physical unit. This multi-functionality approach achieves improved sound quality without adding separate hardware devices, maintaining system simplicity
Solution Approach 2:
The scanner system automatically manages the audio output function through its own auxiliary speaker, eliminating the need for external audio equipment. The system self-configures the audio pathway and manages the speaker integration, reducing the burden on the user and simplifying the overall system architecture
Data Source
AI summary
A speaker integrated into a scanner is provided. The scanner comprises speaker firmware that presents the scanner as two separate logical devices to an Operating System (OS) of a connected host device. The integrated speaker of the scanner can be configured from the OS of the host device to be a primary or secondary speaker of the host device. The host device ports audio generated data on the host device over a wired or wireless connection to the speaker firmware, and the speaker firmware plays the host-generated audio data over or through the integrated speaker of the scanner.