Signal Distribution Circuit Using Cascaded Selectors
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Solution Overview
Problem
Existing signal distribution circuits in transmission apparatuses face inefficiencies in distributing control signals across multiple slots, leading to increased circuitry complexity and resource utilization, particularly when handling varying data speeds and formats in communication networks.
Innovation Solution
A signal distribution circuit utilizing 2:1 selectors and cascaded connections to distribute control signals, such as Cm values, across multiple slots, reducing the number of selectors required and optimizing signal distribution within contiguous slot groups, thereby minimizing circuit complexity and resource usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If traditional signal distribution circuits are used to distribute control signals across multiple slots, then signal distribution functionality is achieved, but circuit complexity and resource utilization increase
Solution Approach 1:
The patent segments the signal distribution function by dividing slots into contiguous groups and selecting representative slots within each group. Instead of independently controlling every slot, the system segments control into group-level operations, reducing the number of control paths and circuit complexity while maintaining comprehensive signal distribution capability across all slots in the group.
Solution Approach 2:
The patent implements universality by creating a multi-functional control mechanism where a single control signal can be periodically updated and distributed to multiple slots simultaneously. The control unit can selectively update representative slots and distribute these updates across entire slot groups, allowing one control path to serve multiple distribution purposes and reducing overall circuit complexity.
2Reliability
If control signals are updated frequently for each slot, then signal accuracy is improved, but resource utilization and processing overhead increase
Solution Approach 1:
The patent applies preliminary action by pre-selecting representative slots within each contiguous slot group that will receive control signal updates. Instead of updating every slot independently, the system preliminarily identifies which slots serve as representatives and updates only those, then distributes the updates across the entire group. This preliminary selection reduces processing overhead while maintaining signal accuracy through periodic updates of the representative slots.
Solution Approach 2:
The patent implements periodic action through the periodic update mechanism of control signals. Rather than continuous or independent updates for each slot, the control signals are updated periodically at the representative slots, and these periodic updates are then distributed across all slots in the contiguous group. This periodic approach maintains signal accuracy while significantly reducing processing overhead and improving productivity.
3Device complexity
If the number of selectors is reduced to minimize circuit complexity, then device complexity decreases, but the ability to handle varying data speeds and formats may be compromised
Solution Approach 1:
The patent merges the control signal distribution function across multiple slots by combining them into contiguous groups. Instead of using separate selectors for each slot, the system merges slots into groups and uses a reduced number of selectors to control representative slots within each group. This merging approach reduces the total number of selectors required while maintaining the ability to handle varying data speeds and formats through the grouped control mechanism.
Solution Approach 2:
The patent uses copying by distributing the control signal from representative slots to other slots within the same contiguous group. The control signals updated at representative slots are copied and distributed to all slots in the group, eliminating the need for independent selectors at each slot. This copying mechanism reduces the number of selectors while preserving adaptability, as the copied control signals maintain the necessary information for handling varying data speeds and formats across all slots.
Data Source
AI summary
A signal distribution circuit includes: first to n-th input lines on which first to n-th signals are respectively input; first to (n−1)th selectors each of which selects one of two inputs under the control of a select signal; and a first output line on which the first signal is output and second to n-th output lines on which output signals of the first to (n−1)th selectors are respectively output, wherein: the first and second inputs of the first selector are supplied with the first signal and the second signal, respectively, the first and second inputs of the i-th selector (i is an integer between 2 and (n−1)) are supplied with the output signal of the (i−1)th selector and the (i+1)th signal, respectively, and any of the selectors, when selected by the select signal, selects the second input and, when not selected by the select signal, selects the first input.