Communications device having an optical bus, and a method for controlling its operation
First Claim
1. Method for controlling an electronic device which has at least two modules (7,8) which are connected to one another via an optical bus (4), the method comprising the steps of:
- in an energy-saving mode, each of the modules (7,8) is switched to receive with a sampling period (P) which is the same for all modules (7,8), and for a sampling time interval (T) which is short in comparison with the sampling period (P),one of these modules (7,8) sends an interrupt signal (I) to the optical bus (4), whose duration is equal to or longer than the sampling period (P), andwhen an interrupt signal (I) is received, at least one other of these modules (7,8) is switched to permanent receive in the next sampling time interval (T) wherein the module (8) which sends the interrupt signal (I) is switched to permanent receive when the interrupt signal (I) is sent.
1 Assignment
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Accused Products
Abstract
An electronic communications device contains at least two modules (7, 8) which are connected to one another via an optical bus (4). In an energy-saving mode, each of the modules (7, 8) is switched to receive with a sampling period (P) which is the same for all modules (7, 8), and for a sampling time interval (T) which is short in comparison with the sampling period (P). One of these modules (7, 8) sends an interrupt signal (I) to the optical bus (4), whose duration is equal to or longer than the sampling period (P). At the latest on reception of the interrupt signal (I), the other module (7, 8) is switched to permanent receive in the next sampling time interval, so that data communication can then take place via the optical bus (4).
21 Citations
20 Claims
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1. Method for controlling an electronic device which has at least two modules (7,8) which are connected to one another via an optical bus (4), the method comprising the steps of:
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in an energy-saving mode, each of the modules (7,8) is switched to receive with a sampling period (P) which is the same for all modules (7,8), and for a sampling time interval (T) which is short in comparison with the sampling period (P), one of these modules (7,8) sends an interrupt signal (I) to the optical bus (4), whose duration is equal to or longer than the sampling period (P), and when an interrupt signal (I) is received, at least one other of these modules (7,8) is switched to permanent receive in the next sampling time interval (T) wherein the module (8) which sends the interrupt signal (I) is switched to permanent receive when the interrupt signal (I) is sent. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. Electronic device having a plurality of modules (7, 8) which are connected to one another via an optical bus (4) for data communication, and in which each module (7, 8) contains the following:
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an optical receiver (14,
19) and an optical transmitter (15,
17), both of which are connected to the optical bus (4),a module operation controller (9, 13;
20,
23) which is connected to the optical receiver (14,
19) and to the optical transmitter (15,
17), andan energy-saving mode control unit (24,
25) which, when in the energy-saving mode, switches off the module operation controller and the optical transmitter (15,
17) and which is furthermore connected to the optical receiver (14,
19) in order to switch the latter to the energy-saving mode periodically and in order to identify a signal (I, B) received by it, and is connected to the optical transmitter (15,
17) in order to pass the latter a signal (I, B) for transmission. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20)
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Specification