Method for common transmission of digital source and control data between data sources and data sinks connected through data lines

• US 5,844,953 A
• Filed: 02/02/1996
• Issued: 12/01/1998
• Est. Priority Date: 02/02/1995
• Status: Expired due to Term

• Current Assignee: SMSC Europe GmbH (Microchip Technology Incorporated)
• Original Assignee: Becker GmbH (Samsung Electronics Co. Ltd.)
• Inventors: Heck, Patrick, Hetzel, Herbert
• Primary Examiner(s): Chin, Stephen
• Assistant Examiner(s): GHAYOUR, MOHAMMAD H
• Application Number:
  US08/595,838
• Time in Patent Office: 1,033 Days
• Field of Search: 375/369, 370/522, 370/528, 370/509, 370/510, 370/305
• US Class Current: 375/369
• CPC Class Codes: B60R 16/0315 using multiplexing techniques multiplexing for transmission of signals G08C15/00; multiplexing for electrical communication in general H04J
• CPC Class Codes: H04B 1/207 with an audio or audio/video bus for signal distribution H04B1/205 takes precedence
• CPC Class Codes: H04L 12/43 with synchronous transmission, e.g. time division multiplex [TDM], slotted rings

Abstract

A method for common transmission of digital source and control data between data sources and sinks being connected by data lines, includes transmitting the source and control data in a format prescribing a clocked sequence of individual bit groups of equal length. In each bit group, there are one or more and in particular two control bits, which are used for the transmission of control signals. One control signal is assigned bitwise to the control bits of successive bit groups. A starting identification code which is identical for all of the control signals is provided at the beginning of each control signal.

Claims

1. In a method for common transmission of digital source and control data between data sources and sinks being connected by data lines, which includes transmitting the source and control data in a format prescribing a clocked sequence of individual bit groups of equal length, the improvement which comprises:

combining a plurality of successive bit groups into a block, and assigning a respective block beginning identification code to a certain bit position within a first bit group of the block;

defining at least one bit of each bit group, respectively, as a control bit for the transmission of control signals;

transmitting a control signal bitwise with the control bits of successive bit groups;

providing a starting identification code being identical for all of the control signals at the beginning of each control signal, whereby the starting identification code of the control signals does not have a fixed relation to the block beginning identification code of each corresponding block; and

setting a length of the control signals to be less than a number of the control bits present in one block.

2. The method according to claim 1, which comprises defining each bit group with two control bits for the transmission of the control signals.

3. The method according to claim 1, which comprises combining 96 successive bit groups into one block, and assigning a respective block beginning identification code to a certain bit position within a first bit group of a block.

4. The method according to claim 1, which comprises dimensioning all of the control signals to be of equal length.

5. The method according to claim 1, which comprises connecting the data sources and sinks with at least one of optical fibers and electrical lines as the data lines.

6. The method according to claim 1, which comprises encoding individual bits by biphase coding.

7. In a method for common transmission of digital source and control data between data sources and sinks being connected by data lines, which includes transmitting the source and control data in a format prescribing a clocked sequence of individual bit groups of equal length, the improvement which comprises:

defining at least one bit of each bit group as a control bit for the transmission of control signals;

transmitting a control signal bitwise with the control bits of successive bit groups;

providing a starting identification code being identical for all of the control signals at the beginning of each control signal;

connecting a plurality of network subscribers in a communication system to one another through a ring-like network for the transmission of control signals of a first network subscriber to a second network subscriber over the network;

sending the bit groups from one network subscriber being used as a master at certain time intervals;

sending the bit groups from the master to the first network subscriber, assigning at least one control signal to the at least one control bit with the first network subscriber, and forwarding the bit groups from the first network subscriber to the next network subscriber in the ring; and

reading out the content of the at least one control bit with the master from bit groups that it has received and assigning the at least one control bit to the next bit group to be sent, with the master.

8. The method according to claim 7, which comprises detecting the start of the control signals, in each case with the second network subscriber, from the starting identification code being assigned to at least one certain bit position of a bit group.

9. The method according to claim 7, which comprises assigning the starting identification code to the at least one control bit of the first bit group of each block with the first network subscriber.

10. The method according to claim 7, which comprises blocking the at least one control bit for transmission of control signals for all of the other network subscribers, after the assignment of the starting identification code by the first network subscriber.

11. The method according to claim 10, which comprises blocking the at least one control bit until the next beginning of a block.

12. In a method for common transmission of digital source and control data between data sources and sinks being connected by data lines, which includes transmitting the source and control data in a format prescribing a clocked sequence of individual bit groups of equal length, the improvement which comprises:

defining at least one bit of each bit group, as a control bit for the transmission of control signals;

transmitting a control signal bitwise with the control bits of successive bit groups;

providing a starting identification code being identical for all of the control signals at the beginning of each control signal;

connecting a plurality of network subscribers in a stationary communications system, in particular a communications system in the home, to one another through a ring-like network for the transmission of control signals of a first network subscriber to a second network subscriber over the network;

sending the bit groups from one network subscriber being used as a master at certain time intervals;

sending the bit groups from the master to the first network subscriber, assigning at least one control signal to the at least one control bit with the first network subscriber, and forwarding the bit groups from the first network subscriber to the next network subscriber in the ring; and

reading out the content of the at least one control bit with the master from bit groups that it has received and assigning the at least one control bit to the next bit group to be sent, with the master.

13. In a method for common transmission of digital source and control data between data sources and sinks being connected by data lines, which includes transmitting the source and control data in a format prescribing a clocked sequence of individual bit groups of equal length, the improvement which comprises:

defining at least one bit of each bit group, as a control bit for the transmission of control signals;

transmitting a control signal bitwise with the control bits of successive bit groups;

providing a starting identification code being identical for all of the control signals at the beginning of each control signal;

connecting a plurality of network subscribers in a mobile communications system, in particular a communications system in a motor vehicle, to one another through a ring-like network for the transmission of control signals of a first network subscriber to a second network subscriber over the network;

sending the bit groups from one network subscriber being used as a master at certain time intervals;

sending the bit groups from the master to the first network subscriber, assigning at least one control signal to the at least one control bit with the first network subscriber, and forwarding the bit groups from the first network subscriber to the next network subscriber in the ring; and

reading out the content of the at least one control bit with the master from bit groups that it has received and assigning the at least one control bit to the next bit group to be sent, with the master.

14. In a method for common transmission of digital source and control data between data sources and sinks being connected by data lines, which includes transmitting the source and control data in a format prescribing a clocked sequence of individual frames of equal length, the improvement which comprises:

combining a plurality of bits into a frame;

defining at least one bit of each frame as a control bit for the transmission of control signals;

combining a plurality of successive frames into one block, and assigning a respective block beginning identification code to a certain bit position within a first frame of a block;

transmitting a control signal bitwise with the control bits of successive frames;

providing a starting identification code being identical for all of the control signals at the beginning of each control signal; and

setting a length of the control signals to be less than a number of the control bits present in one block.