PCM Bitstream Encoding Using Valid MSB Extraction
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Solution Overview
Problem
Existing encoding methods, particularly in PCM mode, suffer from inefficiencies due to the transmission of numerous identical bit strings, leading to wastefulness and a drop in encoding efficiency when dealing with input data having a small dynamic range.
Innovation Solution
The method involves detecting the valid most significant bit position (VMP) and transmitting only the valid data below this position, along with information indicating the VMP, while generating invalid data conforming to the bit pattern above the VMP, allowing for efficient encoding and decoding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If PCM encoding transmits all bits including identical leading bits, then complete data is transmitted, but encoding efficiency drops due to transmission of unnecessary bits
Solution Approach 1:
The patent extracts and transmits only the valid data portion (bits from VMP to LSB) while excluding the unnecessary leading bits that conform to the binary type pattern. The VMP position is detected and used as a boundary to separate valid data from invalid data, allowing efficient transmission of only the necessary information.
Solution Approach 2:
The patent changes the transmission parameter from fixed-bit-length transmission to variable-bit-length transmission based on the detected VMP position. By dynamically adjusting the number of transmitted bits according to the actual data characteristics, the system optimizes encoding efficiency while maintaining data completeness.
2Reliability
If all bit positions are transmitted in PCM mode, then no data is lost, but transmission bandwidth is wasted on identical bit strings
Solution Approach 1:
The patent extracts only the meaningful data portion starting from the valid most significant bit position (VMP) down to the least significant bit (LSB). Leading bits that conform to the binary type pattern (all 0s or all 1s) are excluded from transmission, reducing the quantity of transmitted data while preserving data accuracy.
Solution Approach 2:
Instead of transmitting all possible bit positions, the patent transmits only the partial portion that contains actual information (from VMP to LSB). This partial action approach avoids the excess of transmitting redundant leading bits while ensuring all necessary data is included.
3Productivity
If DPCM switching is used to improve encoding efficiency, then compression ratio improves, but system complexity increases
Solution Approach 1:
The patent extracts and transmits only the valid data portion (VMP to LSB) in PCM mode, achieving encoding efficiency improvement without requiring complex DPCM switching logic. This simplifies the system by eliminating the need for prediction, error calculation, and mode switching while still reducing the data transmission volume.
Solution Approach 2:
Instead of using DPCM to predict and encode differences, the patent inverts the approach by directly transmitting the valid data portion in PCM mode with VMP indication. This alternative approach achieves similar efficiency goals without the complexity of predictive encoding and mode switching.
Data Source
AI summary
The present disclosure relates to an information processing device and method capable of suppressing a drop in encoding efficiency.A valid most significant bit position of a data unit constituted by a plurality of samples is detected, a bit string below the valid most significant bit position is extracted as valid data from the samples, and a bitstream including the valid most significant bit position and the valid data of each of the samples is generated. Furthermore, the valid most significant bit position of the data unit constituted by the plurality of samples and the valid data of each of the samples are extracted from the bitstream, invalid data constituted by a bit pattern according to a binary type is generated, the valid data is aligned, the invalid data and the aligned valid data are coupled for each of the samples, and a data unit is generated. The present disclosure can be applied, for example, in an information processing device, an electronic device, an information processing method, a program, or the like.