Data Transmission Framing Using Alternating Bit Order
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Solution Overview
Problem
Existing data transmission techniques, such as ASCII and CDMA, face inefficiencies in framing data, leading to bandwidth wastage and incorrect identification of data sequences due to the lack of a clear framing mechanism, particularly in Extremely Low-Resource Optical Identifier (ELROI) and Code Division Multiple Access (CDMA) systems.
Innovation Solution
The proposed solution involves transmitting data streams with alternating forward and reverse order bits, allowing receivers to recover the framing clock without losing communication bandwidth, using techniques like shift registers and XNOR gates to correlate and validate the data streams, thereby identifying the correct framing and accepting the accompanying payload.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional framing mechanisms (start bits, stop bits, or rotation information) are inserted into data streams, then framing synchronization can be achieved, but bandwidth is wasted and information transmission efficiency decreases
Solution Approach 1:
The patent merges the data payload with the framing synchronization mechanism by encoding rotation information directly into the data bits themselves. The data stream contains both the actual information and the framing cues intertwined, eliminating the need for separate framing bits. This is achieved by using specific bit patterns within the data stream that simultaneously convey data and indicate frame boundaries, thereby combining multiple functions into a single integrated structure.
Solution Approach 2:
The patent extracts the framing synchronization function from the traditional separate framing mechanism and embeds it within the data stream structure itself. By removing dedicated framing bits (start bits, stop bits, rotation information) and integrating framing cues into the data payload, the system eliminates redundant information transmission while maintaining synchronization capability.
2Measurement precision
If rotation information is transmitted to indicate the starting position of data reading, then framing can be achieved, but 26% or more of the information bandwidth is wasted
Solution Approach 1:
The patent applies local quality by encoding rotation information selectively within specific regions of the data stream rather than transmitting it separately. Different portions of the data stream contain different types of information, with framing cues embedded locally where needed. This allows the receiver to extract rotation information from specific bit positions within the data stream without requiring dedicated framing fields, thereby maintaining high information density while providing precise frame start position identification.
3Measurement precision
If ASCII framing with start and stop bits is used, then character boundaries can be identified, but the data stream becomes expanded and bandwidth efficiency decreases
Solution Approach 1:
The patent inverts the traditional approach by not expanding data with additional framing bits, but rather by embedding framing information within the existing data structure. Instead of adding start and stop bits that increase data stream length, the system uses the existing data bits to carry both payload and framing information, effectively inverting the conventional wisdom that framing requires expansion.
Data Source
AI summary
Techniques for framing data in various data transmission contexts are described. A data framing technique may include a transmitter sending a data stream including repeating bits in alternating forward and reverse order. A receiver of the data stream may fold the data stream, and correlate portions of the folded data stream for purposes of validating the data stream and/or identifying an ID in the data stream. In at least some instances, once the receiver validates the data stream, the receiver may accept payload accompanying the data stream.