Audio Playback Controller ACC Power State Memory
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Solution Overview
Problem
Audio apparatuses fail to detect user operations during ACC power off and cannot accurately display selected category names upon ACC power resumption, leading to user inconvenience.
Innovation Solution
A content playback apparatus that stores history information of user operations and displays narrowing conditions, including category names, upon reconnection, using a database to determine and display relevant information based on stored content information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the audio apparatus displays the category name selected by the user before ACC power off, then the user convenience is improved, but the accuracy of displaying the correct category name deteriorates because the apparatus cannot detect user operations during power off
Solution Approach 1:
The system performs preliminary actions by storing the display state (category name selection) in memory before the ACC power is turned off. When power is restored, the system retrieves this stored state and restores the display to match the user's previous selection, eliminating the need for the user to re-navigate through categories and improving convenience while maintaining accuracy through persistent storage of the selection state.
2Measurement precision
If the audio apparatus does not display any category name after ACC power on, then the accuracy of information display is improved by avoiding incorrect information, but the user convenience deteriorates due to loss of previously selected category information
Solution Approach 1:
The system implements feedback by continuously monitoring the ACC power state and detecting when power is restored. Upon detecting power restoration, the system retrieves the previously stored display state from memory and restores the category name selection to its previous state. This feedback mechanism ensures that accurate information is displayed while maintaining user convenience by preserving the user's selection across power cycles.
Data Source
AI summary
A content playback apparatus that plays back a content of a plurality of contents stored in an external apparatus, includes: a controller that causes content information of a playback target content among the plurality of contents to be displayed on a screen; and a memory that stores information. The controller: i) performs a process of storing a history of a narrowing operation performed to select the playback target content; ii) performs a process of displaying a narrowing condition on which the playback target content is selected by the narrowing operation; and iii) determines whether or not to cause the narrowing condition to be displayed again on the screen of the content playback apparatus, in a case where the playback content apparatus changes from a state in which the content playback apparatus fails to recognize the external apparatus to a state in which the content playback apparatus recognizes the external apparatus.