Call Audio PCM Routing for Multi-Screen Collaboration
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Solution Overview
Problem
Electronic devices without cellular communication capabilities cannot perform call functions, and existing solutions for multi-screen collaboration scenarios face conflicts and increased power consumption due to multiplexing PCM devices for audio data transmission.
Innovation Solution
Utilize distinct PCM devices for call audio uplink and downlink data transmission, configuring separate paths and scenarios to avoid conflicts and reduce power consumption, with support for multi-screen collaboration modes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single PCM device is multiplexed for both call audio uplink and downlink data transmission, then device complexity is reduced, but cache data conflicts occur and power consumption increases
Solution Approach 1:
The patent divides the audio data transmission into separate uplink and downlink paths, each using a dedicated PCM device. This segmentation eliminates cache conflicts by ensuring that simultaneous audio operations do not share the same hardware resource, thereby improving reliability while maintaining manageable system complexity through clear functional separation.
2Device complexity
If a single PCM device is multiplexed for call audio transmission, then device complexity is reduced, but power consumption increases due to conflict resolution operations
Solution Approach 1:
By segmenting the audio transmission into separate uplink and downlink channels with dedicated PCM devices, the system eliminates the need for complex conflict resolution logic and associated processing operations. This segmentation reduces power consumption by avoiding repeated cache management and data arbitration operations that would be required in a multiplexed configuration.
3Reliability
If separate PCM devices are used for uplink and downlink audio data, then cache data conflicts are reduced, but device complexity increases
Solution Approach 1:
The patent applies universality by using identical PCM device configurations for both uplink and downlink paths. Each PCM device performs the same fundamental functions of audio data caching and transmission, but in dedicated directions. This standardized approach manages complexity through repetition of proven, simple modules rather than requiring complex integrated solutions.
4Use of energy by moving object
If separate PCM devices are used for uplink and downlink audio data, then power consumption is reduced, but device complexity increases
Solution Approach 1:
The segmentation of audio transmission into separate uplink and downlink paths with dedicated PCM devices eliminates power-consuming conflict resolution operations. The increased device count is offset by the elimination of software-based arbitration and cache management overhead, resulting in net power savings while maintaining straightforward, modular hardware configurations.
Data Source
AI summary
Embodiments of this application provide a method for transmitting call audio data and an apparatus, applied to a first electronic device, the method including: establishing a call with a peer electronic device in response to a call operation, where a second electronic device is an input and output device of sound signals during a call, and the first electronic device and the second electronic device are in a multi-screen collaboration mode; and storing call audio downlink data transmitted by the peer electronic device in a first PCM device, transmitting the call audio downlink data in the first PCM device to the second electronic device, storing call audio uplink data transmitted by the second electronic device in a second PCM device, transmitting the call audio uplink data in the second PCM device to the peer electronic device.