Audio Signal Control Unit for Network Speaker Compatibility

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Solution Overview

Problem

Existing audio signal reproduction systems cannot easily reproduce content items when a network speaker does not conform to the content protocol of the reproduction content item, limiting user access to music playback.

Innovation Solution

An information processing apparatus with a detection unit to identify the coding method of an audio signal, a decoding unit to decode the signal, and a control unit to select between two control methods based on compatibility information, allowing the apparatus to either decode and transmit the signal or have the external storage directly transmit it to the speaker for decoding.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the network speaker is required to conform to the content protocol of the reproduction content item, then the speaker apparatus can reliably decode and reproduce the audio signal, but the adaptability to different coding methods is reduced

Engineering Contradiction:
Improvedecoding reliabilityVSAvoidcoding method compatibility
Core Design Contradiction:
ReliabilityVSAdaptability or versatility

Solution Approach 1:

The information processing apparatus acts as an intermediary between the external storage and the network speaker. It detects the coding method of the audio signal, determines decoding compatibility, and selectively performs decoding before transmission. This mediator role allows the system to bridge the gap between speakers with limited decoding capabilities and diverse audio formats, resolving the contradiction by enabling reliable reproduction through the intermediary's decoding function while maintaining broad adaptability to different coding methods.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Adaptability or versatility

If the information processing apparatus performs decoding before transmission, then the speaker apparatus can reproduce audio signals with coding methods it cannot decode, but the device complexity increases

Engineering Contradiction:
Improvecoding method compatibilityVSAvoidsystem complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The system dynamically adjusts the decoding operation based on real-time compatibility assessment. The control unit detects the coding method of the audio signal, consults stored decoding compatibility information, and selectively activates the decoding function only when necessary. This dynamic approach allows the information processing apparatus to perform decoding before transmission only for incompatible formats, thereby achieving broad coding method compatibility while minimizing the actual operational complexity and resource consumption.

Inventive Principle:
Principle #15Dynamics

3Adaptability or versatility

If decoding compatibility information is stored for multiple coding methods, then the system can make informed decisions about decoding operations, but the storage unit requires more memory capacity

Engineering Contradiction:
Improvecoding method supportVSAvoidmemory capacity
Core Design Contradiction:
Adaptability or versatilityVSQuantity of substance

Solution Approach 1:

The system stores decoding compatibility information in a structured manner, organizing data by coding method types. The storage unit contains decoding compatibility information that maps specific coding methods to their decodability status for the network speaker. This localized organization allows the control unit to efficiently query and retrieve only the relevant compatibility information needed for the current audio signal, achieving broad coding method support while optimizing memory capacity by avoiding redundant storage.

Inventive Principle:
Principle #3Local quality

Data Source

PatentUS9524723B2Information processing apparatus and control method
Publication Date: 2016.12.20 PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO LTD
  • US9524723B2 patent drawing
  • US9524723B2 patent drawing
  • US9524723B2 patent drawing

AI summary

An information processing apparatus detects a coding method of an audio signal to be reproduced as a target coding method, selects one of a first control and a second control based on the target coding method and decoding compatibility information stored in a storage unit, and performs the selected one of the first control and the second control, the first control being for obtaining the audio signal from an external storage; decoding the obtained audio signal; and transmitting the decoded audio signal to a speaker apparatus, the second control being for causing: the external storage to directly transmit the audio signal to the speaker apparatus; and the speaker apparatus to decode the audio signal.