Data bus system
First Claim
1. Data bus system comprised of:
- a) a serial data bus (DB) operated with complementary logic signals,b) several system users (TN1 . . . Tnn), communicating with each other via the bus lines (BL1, BL2) of the data bus (DB),c) several output stages (ES1 . . . Esn) each having a transmitter (ST) and a receiver (ET), with each system user (TN1 . . . Tnn) being assigned an output stage (ES1 . . . Esn) for coupling to the data bus (DB), andwherein,d) the output stage (ES1 . . . Esn) of each system user (TN1 . . . Tnn) includes a respective terminating network (ANW1 . . . ANW2) coupled to the bus lines (BL1, BL2),e) the terminating network (ANW1) of at least one output stage (ES1) is low impedance, active, and internally switchable from one impedance value present on the bus lines to another impedance value present on the bus lines,f) the terminating network (ANW3 . . . ANWn) of at least one more output stage (ES2) is passive and of low impedance,g) the terminating networks (ANW3 . . . ANWn) of all other output stages (ES3) . . . ESn) are passive and of high impedance.
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Accused Products
Abstract
A data bus system including a serial data bus operated with complementary logic signals, several system users, communicating with each other via the bus lines of the data bus, and several output stages complete with a transmitter and a receiver, where each system user is assigned an output stage for coupling to the data bus. The output stage of each system user features a terminating network, with the determining network of at least on output stage being low impedance, active, switching, and internally switchable, with the terminating network of at least one more output stage being passive and low impedance, and with the terminating networks of all other output stages being passive and high impedance.
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Citations
9 Claims
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1. Data bus system comprised of:
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a) a serial data bus (DB) operated with complementary logic signals, b) several system users (TN1 . . . Tnn), communicating with each other via the bus lines (BL1, BL2) of the data bus (DB), c) several output stages (ES1 . . . Esn) each having a transmitter (ST) and a receiver (ET), with each system user (TN1 . . . Tnn) being assigned an output stage (ES1 . . . Esn) for coupling to the data bus (DB), and wherein, d) the output stage (ES1 . . . Esn) of each system user (TN1 . . . Tnn) includes a respective terminating network (ANW1 . . . ANW2) coupled to the bus lines (BL1, BL2), e) the terminating network (ANW1) of at least one output stage (ES1) is low impedance, active, and internally switchable from one impedance value present on the bus lines to another impedance value present on the bus lines, f) the terminating network (ANW3 . . . ANWn) of at least one more output stage (ES2) is passive and of low impedance, g) the terminating networks (ANW3 . . . ANWn) of all other output stages (ES3) . . . ESn) are passive and of high impedance. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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Specification