Data transmission system, utilizing ac line frequency as clock
阅读：357发布：2022-12-13
专利汇可以提供Data transmission system, utilizing ac line frequency as clock专利检索，专利查询，专利分析的服务。并且A data transmission system is described in which bipolar data signals are derived from an AC signal. The system comprises a transformer having a primary winding receiving the AC signal and a secondary winding. The ends of the secondary winding are respectively connected to switch means the control terminals of which receive data signals. The bipolar signal derived at the center tap of the secondary winding reflects the data signal inputs to the switch means.，下面是Data transmission system, utilizing ac line frequency as clock专利的具体信息内容。
1. In a digital data processing having at least first and second terminals, a system for transmitting digital data signals from one of said terminals to another of said terminals, said data transmitting system comprising an input terminal for receiving an AC signal, first and second nodes, means coupled to said input terminal and to said first and second nodes for establishing a true and inverse signal of said AC signal at said first and second nodes respectively, an output terminal, and means responsive to each bit of an applied digital input data signal for selectivity applying only one half-cycle of one of said true and inverse signals to said output terminal, thereby to develop at said output terminal an output data signal having successive positive-negative half-cycles which respectively correspond to the logic sense of each of said bits of said input digital data signal.
2. The data transmitting system of claim 1, further comprising a reference point, said signal applying means including means for coupling one of said first and second nodes to said reference point, and isolating the other of said nodes therefrom.
3. The data transmitting system of claim 2, in which said signal applying means comprises first and second switch means respectively coupled between said first and second nodes and said reference point, one of said first and second switch means being selectively actuated in response to each bit of said digital input data signal.
4. The data transmitting system of claim 1, in which said signal establishing means comprises transformer means having a primary winding coupled to said input terminal, a secondary winding having first and second ends respectively coupled to said first and second nodes, and a center tap of said secondary winding coupled to said output terminal.
5. The data transmitting system of claim 4, in which said signal applying means comprises first and second switch means respectively coupled to said first and second ends of said secondary winding, and means for selectively actuating one or the other of said switch means in response to successively applied bits of said input data signal.
6. The data transmitting system of claim 5, further comprising first and second oppositively poled diode means respectively coupled between said ends of said secondary windIng and said first and second switch means.
7. In combination with the data transmitting system of claim 1, a receiving system in the other of said terminals comprising first and second switching stages each capable of operating at one of two discrete states, and means for applying the signal from said transmitting system to alter the state of one of said switching stages in response to the sense of the transmitted data signal.
8. In combination with the data transmitting system of claim 3, a receiving system in the other of said terminals comprising first and second switching stages each capable of operating at one of two discrete states, and means for applying the signal from said transmitting system to alter the state of one of said switching stages in response to the sense of the transmitted data signal.
9. In combination with the data transmitting system of claim 5, a receiving system in the other of said terminals comprising first and second switching stages each capable of operating at one of two discrete states, and means for applying the signal from said transmitting system to alter the state of one of said switching stages in response to the sense of the transmitted data signal.
10. A digital data transmission system for transmitting synchronized digital data between at least first and second terminals of a digital processing apparatus, said transmissions system comprising: transformer means having a primary and a center tapped secondary winding; means for applying an AC high power synchronizing signal to said primary winding; first and second switch means connected to each end of said secondary winding, one of said first and second switch means being responsive only to the presence of binary ''''1'''' bits, and the other of said first and second switch means being responsive only to the presence of binary ''''0'''' bits, a source for supplying an input digital data signal consisting of ''''1'''' and ''''0'''' bits, means for connecting said input digital data source to said first and second switch means; an output terminal connected to said secondary winding; and means responsive to the operation of one of said first and second switch means for generating at said output terminal only one full half-cycle of a given polarity of the AC synchronizing signal as reflected across said transformer and responsive to the presence of a binary ''''1'''' bit, and for generating only one full half-cycle of a polarity opposite said given polarity of said AC synchronizing signal as reflected across said transformer and responsive to the presence of a binary ''''0'''' bit at said switch means.
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