XOR Logic Circuit for Flashing Marker Lamp Driver
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Solution Overview
Problem
Dual intensity marker lamps are more expensive to manufacture and result in non-uniform intensity when used in rows of single intensity lamps, leading to an undesirable appearance, as they require additional components and wires, making it costly and aesthetically suboptimal to achieve a flashing effect.
Innovation Solution
Employing an exclusive OR (XOR) logic circuit to drive standard single intensity marker lamps, allowing for uniform styling and integration of flash and marker functions in a single lamp, using a logic circuit that operates between marker and turn function inputs to control the lamp's output, ensuring consistent and coordinated flashing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If dual intensity marker lamps are used to achieve flashing effect, then the flashing function is enabled, but the manufacturing cost increases and the appearance uniformity deteriorates
Solution Approach 1:
The patent makes a single marker lamp perform multiple functions by using an XOR logic circuit to combine marker and turn signal functions. The lamp can operate as a standard marker lamp or flash in sequence with turn signals, eliminating the need for separate dual-intensity lamps and achieving versatility without increasing manufacturing complexity
Solution Approach 2:
The XOR logic circuit acts as an intermediary device that takes marker lamp input and turn signal input, and produces a controlled output that achieves the flashing effect. This intermediary component enables the flashing function through simple logic operations rather than requiring complex dual-intensity lamp construction
2Adaptability or versatility
If dual intensity marker lamps are used to achieve flashing effect, then the flashing function is enabled, but the appearance uniformity deteriorates
Solution Approach 1:
The XOR logic circuit enables the marker lamp to perform multiple functions (standard marker operation and flashing operation) while maintaining consistent intensity characteristics. All marker lamps in the row can be identical single-intensity lamps, ensuring uniform appearance whether the lamp is operating as a marker or flashing with turn signals
3Adaptability or versatility
If dual intensity marker lamps are used, then the flashing function is enabled, but the device complexity increases
Solution Approach 1:
The marker lamp maintains its simple two-terminal construction while the XOR logic circuit handles the complexity of combining marker and turn signal functions. This separates the complexity from the lamp itself and places it in the control circuitry, allowing the lamp to remain a simple universal component that can perform multiple functions
Data Source
AI summary
A lamp and lamp driver are disclosed, in which single intensity marker lamps that are desired to be flashed can be connected to a lamp driver employing an exclusive OR (XOR) logic circuit. In one application, this lamp driver is coupled to a vehicle turn function wire and marker function wire, and a plurality of marker lamps in a row can be of the same style, but one lamp can be flashed in the row of marker lamps. In some embodiments, if all of the marker lamps are on, the lamp being driven by the XOR driver circuit will flash out of sequence with the turn signal flash. If all of the marker lamps are off, the lamp being driven by the XOR driver circuit will flash in sequence with the turn signal flash. Other embodiments are disclosed.