USB Audio Control Circuit Enumeration Without Onboard Parameter Storage
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Solution Overview
Problem
Audio control circuits with USB interfaces require significant storage space and increased costs due to the need for storing various customized parameters, which complicates their design and production.
Innovation Solution
An audio control circuit design where the host device actively transmits necessary parameters to the audio control circuit during boot, eliminating the need for storage components in the audio control circuit by using these parameters for enumeration through a USB interface and specific interface circuits.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If storage components are added to store customized parameters in the audio control circuit, then the parameters can be stored and used for enumeration, but the storage cost and printed circuit board area increase
Solution Approach 1:
The patent extracts the parameter storage function from the audio control circuit and relocates it to the host device. The host device stores the parameters in its own storage components and transmits them to the audio control circuit through the specific interface circuit during the boot process, eliminating the need for storage components in the audio control circuit.
Solution Approach 2:
The patent implements preliminary action by having the host device store and transmit the necessary parameters to the audio control circuit before the USB enumeration process begins. This allows the audio control circuit to have the parameters ready when enumeration starts, without needing its own storage components.
2Adaptability or versatility
If storage components are added to store customized parameters, then various parameters can be stored, but the production cost increases
Solution Approach 1:
The patent makes the host device universal by enabling it to store and provide parameters for multiple different audio control circuits. The host device's storage components serve multiple purposes: storing operating system files, application data, and the customized parameters needed for various audio devices, eliminating the need for each audio control circuit to have its own storage components.
3Reliability
If the audio control circuit has its own storage components, then parameters can be stored locally, but the enumeration process becomes less efficient
Solution Approach 1:
The patent merges the parameter storage and transmission functions into a single streamlined process. The host device combines parameter storage in its own memory with the transmission mechanism, delivering all necessary parameters to the audio control circuit in one operation during boot, which simplifies the overall enumeration process and improves efficiency.
Data Source
AI summary
The present invention provides an audio control circuit, wherein the audio control circuit includes a USB interface circuit, a specific interface circuit and a processing circuit. In the operation of the audio control circuit, the processing circuit receives a plurality of parameters from a host device through the specific interface circuit; and during an enumeration between the audio control circuit and the host device, the processing circuit uses the plurality of parameters to perform the enumeration.