Arrangement comprising electronic devices exchanging information
First Claim
1. Arrangement comprising a first device being coupled to a second device for exchanging information in a sequence of time slots, said first device comprises a first transmitter for transmitting a signal representing at least one digital symbol from the first device to the second device in a first part of a timeslot and the second device comprises a second transmitter for transmitting a signal representing at least one digital symbol from the second device to the first device in a second part of the timeslot characterized in that the second device comprises control means for terminating the transmission of the at least one digital symbol from the second device to the first device before the end of the second part of the timeslot, and in that the first device comprises further control means for always introducing a level change at the beginning of the first part of the time slot, regardless of the value of the at least one digital symbol transmitted by the first transmitter, and further characterized in that the second transmitter is adapted to provide data without transmitting a synchronizing signal.
2 Assignments
0 Petitions
Accused Products
Abstract
In a transmission system in which information is transmitted from a first device (2) to a second device (6) and vice versa, use is made of a first part (t0-t3) of a timeslot to transmit data from the first device (2) to the second device (6) and of a second part (t3-t4) of the timeslot to transmit data from the second device (6) to the first device (2). To obtain correct operation of the system, the second device (6) is synchronized to the first device (2). This is done using a phase locked loop (78) which locks on the signal present on the interconnection lines between the first device (2) and the second device (6). To ensure reliable synchronization, the second part of the timeslot (t3-t4) ends before the beginning (t5) of the first part of the next timeslot; and a rising edge is presented at the beginning (t5) of the first part of each new timeslot.
12 Citations
11 Claims
- 1. Arrangement comprising a first device being coupled to a second device for exchanging information in a sequence of time slots, said first device comprises a first transmitter for transmitting a signal representing at least one digital symbol from the first device to the second device in a first part of a timeslot and the second device comprises a second transmitter for transmitting a signal representing at least one digital symbol from the second device to the first device in a second part of the timeslot characterized in that the second device comprises control means for terminating the transmission of the at least one digital symbol from the second device to the first device before the end of the second part of the timeslot, and in that the first device comprises further control means for always introducing a level change at the beginning of the first part of the time slot, regardless of the value of the at least one digital symbol transmitted by the first transmitter, and further characterized in that the second transmitter is adapted to provide data without transmitting a synchronizing signal.
- 6. Device being arranged for exchanging information in a sequence of time slots with a second device, said device comprising a first transmitter for transmitting at least one digital symbol in a first part of a timeslot and a receiver for receiving at least one digital symbol in a second part of the timeslot characterized in that the device comprises further control means for always introducing a level change at the beginning of the first part of the time slot, regardless of the value of the at least one digital symbol transmitted by the first transmitter, and in that the device is arranged for receiving a signal which terminated before the end of the second part of the timeslot, and further characterized in that the first receiver is adapted to receive data without receiving a synchronizing signal from the second device.
- 8. Device being coupled to a first device for exchanging information in a sequence of time slots, said device being arranged for receiving a signal representing at least one digital symbol in a first part of a timeslot and for transmitting a signal representing at least one digital symbol in a second part of the timeslot characterized in that the device comprises control means for terminating the transmission of the at least one digital symbol before the end of the second part of the timeslot, and in that the device is arranged for receiving a signal always having a level change at the beginning of the first part of the time slot, regardless of the value of the at least one digital symbol transmitted by the first transmitter and further characterized in that the device is adapted to provide data without transmitting a synchronizing signal.
Specification