Apparatus and method for transmitting binary-coded information
First Claim
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1. A method of transmitting binary-coded information comprising the steps of:
- receiving a binary-coded signal having a first and a second state;
generating a pulse-coded signal in response to the binary-coded signal, the pulse-coded signal comprising;
a data pulse of a first polarity when the binary-coded signal changes from the first to the second state, a data pulse of a second polarity when the binary-coded signal changes from the second to the first state, and a refresh pulse having the same polarity as the preceding data pulse when there is no subsequent data pulse for a predetermined time interval.
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Abstract
An apparatus is disclosed for transmitting binary-coded information over a fiber-optic link which provides a link monitor to indicate whether the fiber-optic link is intact and operating. The binary-coded information is translated into a pulse-coded signal which provides a positive pulse for a positive-going transition in the binary signal and a negative pulse for a negative-going transition in the binary signal. In addition, a refresh pulse of the same polarity as the preceding pulse is provided whenever there has been no pulse for a predetermined amount of time.
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Citations
14 Claims
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1. A method of transmitting binary-coded information comprising the steps of:
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receiving a binary-coded signal having a first and a second state; generating a pulse-coded signal in response to the binary-coded signal, the pulse-coded signal comprising;
a data pulse of a first polarity when the binary-coded signal changes from the first to the second state, a data pulse of a second polarity when the binary-coded signal changes from the second to the first state, and a refresh pulse having the same polarity as the preceding data pulse when there is no subsequent data pulse for a predetermined time interval. - View Dependent Claims (2, 3, 4)
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5. An apparatus for transmitting binary-coded information comprising:
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input means for receiving a binary-coded signal having a first and a second state; and pulse generating means connected to the input means for producing a pulse-coded signal comprising a data pulse of a first polarity when the binary-coded signal changes from the first to the second state, a data pulse of a second polarity when the binary-coded signal changes from the second to the first state, and a refresh pulse having the same polarity as the preceding pulse when there is no subsequent pulse for a predetermined time interval. - View Dependent Claims (6, 7, 8, 9, 10, 11, 12, 13, 14)
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Specification