Decoding circuit and decoding method thereof
First Claim
1. A decoding circuit, adapted for decoding an input signal, wherein the input signal corresponds to a DMX512 signal format, the input signal comprises at least a break, and the length of the break is a preset time, the decoding circuit comprising:
- a decoding unit; and
a detecting unit, coupled to the decoding unit, configured for detecting whether the input signal is kept at a specific logic level for more than the preset time;
wherein, when the input signal is kept at the specific logic level for more than the preset time, the detecting unit, according to the voltage level of the specific logic level, determines to output the input signal or the inverted input signal to the decoding unit to perform a decoding process.
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Abstract
A decoding circuit is adapted for decoding an input signal. The input signal includes at least a break and the time length of the break is a preset time. The decoding circuit includes a decoding unit and a detecting unit. The detecting unit detects whether the voltage level of the input signal is kept at a specific logic level for more than the preset time. If the input signal is kept at the specific logic level for more than the preset time, the detecting circuit, according to the voltage level of the specific logic level, outputs the input signal or the inverted input signal to the decoding unit so as to perform a decoding process.
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Citations
11 Claims
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1. A decoding circuit, adapted for decoding an input signal, wherein the input signal corresponds to a DMX512 signal format, the input signal comprises at least a break, and the length of the break is a preset time, the decoding circuit comprising:
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a decoding unit; and a detecting unit, coupled to the decoding unit, configured for detecting whether the input signal is kept at a specific logic level for more than the preset time; wherein, when the input signal is kept at the specific logic level for more than the preset time, the detecting unit, according to the voltage level of the specific logic level, determines to output the input signal or the inverted input signal to the decoding unit to perform a decoding process. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A decoding method, adapted for a decoding circuit to decode an input signal, wherein the input signal corresponds to a DMX512 signal format, the input signal comprises at least a break, and the length of the break is a preset time, the decoding method comprising:
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receiving the input signal; and detecting whether the input signal is kept at a specific logic level for more than the preset time; wherein, when the input signal is kept at the specific logic level for more than the preset time, outputting the input signal or the inverted input signal to a decoding unit in the decoding circuit to perform a decoding process according to the voltage level of the specific logic level. - View Dependent Claims (8, 9, 10, 11)
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Specification