Timepiece Oscillation Circuit Switching for Fast Start and Low Power
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Solution Overview
Problem
Existing electronic timepieces face challenges in promoting oscillation start characteristics while maintaining low power consumption and simplicity, as separate components like high-drive inverter or high-amplification auxiliary amplifiers increase power consumption and complexity.
Innovation Solution
The electronic timepiece incorporates switching means within the oscillation circuit loop, controlled by a controlling means to short-circuit a protective capacitor at oscillation start and insert it after a predetermined time, using a constant voltage circuit to supply drive power, which can be intermittently pulsed to reduce power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a direct current cutting capacitor is inserted into the oscillation circuit loop to protect from leakage, then the oscillation stability is improved, but the oscillation start characteristic is deteriorated
Solution Approach 1:
The patent applies the dynamics principle by making the capacitor connection dynamic rather than static. The capacitor is connected to the oscillation circuit loop through a switch that changes its state based on the oscillation phase: during the oscillation start period, the switch disconnects the capacitor to allow fast startup; after the predetermined time period, the switch connects the capacitor to provide leakage protection. This dynamic switching resolves the contradiction between fast oscillation start and stable oscillation maintenance.
2Use of energy by stationary object
If low power consumption formation is implemented by operating the oscillation circuit with constant voltage, then power consumption is reduced, but the oscillation start characteristic is deteriorated
Solution Approach 1:
The patent applies periodic action by implementing a time-based switching mechanism that periodically changes the circuit configuration. During the initial oscillation start period, the capacitor is disconnected to enable fast startup. After the predetermined time period elapses, the capacitor is connected to provide leakage protection. This periodic switching of the capacitor connection state allows the circuit to achieve both fast oscillation start and stable oscillation maintenance without requiring continuously high power consumption.
3Productivity
If separate high-drive inverters or auxiliary amplifiers are provided to promote oscillation start characteristic, then the oscillation start characteristic is improved, but power consumption increases and device complexity increases
Solution Approach 1:
The patent applies the merging principle by integrating the leakage protection function directly into the existing oscillation circuit loop through a switch and capacitor, rather than adding separate high-drive inverters or auxiliary amplifier circuits. This integrated approach achieves both fast oscillation start characteristic and leakage protection using the same circuit components, thereby avoiding the increased power consumption and device complexity that would result from separate protective circuits.
Data Source
AI summary
To be able to promote oscillation start characteristic while having a simple constitution and maintaining low power consumption. In starting to oscillate an oscillation circuit, a capacitor for protecting from leakage is shortcircuited by bringing a switch of an oscillation stabilizing circuit 11 into a closed state and a constant voltage circuit starts to oscillate the oscillation circuit by supplying a drive voltage of a power source voltage to the oscillation circuit. After an elapse of a predetermined time period, oscillation is prevented from being stopped by leakage by inserting the capacitor into the oscillation circuit loop by bringing the switch into an open state, and an oscillation operation is continued by supplying a voltage lower than the power source voltage to the oscillation circuit by intermittently driving the constant voltage circuit.