Dynamic Recording Quality Adjustment in Battery Devices
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Solution Overview
Problem
Battery-operated communication devices face challenges in managing power consumption and recording quality while storing increasing amounts of audio and video information, as existing techniques primarily focus on reducing encoding rates without addressing the need for dynamic quality adjustments during recording sessions.
Innovation Solution
The solution involves a technique that allows battery-operated devices to change the quality level of recorded information 'on the fly' without interrupting the recording session, enabling persistent storage at multiple quality levels in response to user inputs or device status changes, using an encoder and decoder that can adapt encoding and decoding rates dynamically.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If the encoding rate is reduced to lower power consumption, then power usage is reduced, but the quality of recorded information deteriorates
Solution Approach 1:
The patent applies dynamics by making the encoding rate adjustable and changeable during the recording session. The system transitions from a static encoding rate to a dynamic one that can be modified in response to user input or device status changes (such as battery voltage levels). This allows the device to adapt the encoding quality to match current power availability and user needs, resolving the contradiction between maintaining quality and reducing power consumption.
Solution Approach 2:
The patent changes the encoding rate parameter during the recording session based on device status (e.g., battery voltage) or user input. By allowing the encoding rate parameter to vary rather than remain fixed, the system can optimize the balance between power consumption and recording quality in real-time, addressing the technical contradiction.
2Duration of action of moving object
If the encoding rate is reduced to extend battery life, then duration of action is improved, but the quantity of recordable information at high quality decreases
Solution Approach 1:
The system dynamically adjusts the encoding rate during the recording session based on battery status and user needs. This allows the device to extend battery life by using lower encoding rates when appropriate while still providing the option to record at higher qualities when power is available or needed, thus increasing the effective quantity of recordable information at high quality without sacrificing battery life.
Solution Approach 2:
By changing the encoding rate parameter in response to device status changes (such as battery voltage falling below a threshold) or user input, the system optimizes the balance between battery life and the quantity of recordable information. This allows flexible adjustment to maximize both recording duration and information quantity.
3Use of energy by moving object
If the encoding rate is reduced to manage power consumption, then power usage is controlled, but the ability to decode at multiple quality levels is lost
Solution Approach 1:
The patent applies preliminary action by buffering the encoded information at the highest quality level before decoding. This pre-buffering allows the system to later decode at multiple quality levels (including higher qualities) without requiring real-time high-rate encoding during playback. The preliminary high-quality buffering enables flexible decoding options while keeping actual encoding power consumption manageable.
Solution Approach 2:
The patent introduces a buffer as an intermediary between the encoder and decoder. This buffer stores encoded information and enables the decoder to operate at multiple quality levels independently of the encoder's current rate. The buffer mediates between power-constrained encoding and flexible-quality decoding, allowing the system to manage power consumption during encoding while maintaining adaptability during decoding.
Data Source
AI summary
A technique for recording information in a battery operated device is provided such that quality level of the recorded information may be changed “on the fly.” In one embodiment, while persistently recording information at a first quality level, the battery operated device may, in response to an input a desire or need to change recording quality level, thereafter persistently record the information at a second quality level different from the first quality level, without interrupting the continuity of the recording session. In a presently preferred embodiment, the information being recorded may comprise video information or audio information. Subsequent inputs indicating the need to change recording quality level yet again may also be received thereby causing the battery operated device to persistently record the information at yet another quality level, which quality level may be the same as the first quality level.