×

Method and device for increasing the data transmission capacity in a serial bus system

  • US 9,513,988 B2
  • Filed: 03/29/2012
  • Issued: 12/06/2016
  • Est. Priority Date: 04/06/2011
  • Status: Active Grant
First Claim
Patent Images

1. A method for serial data transmission processing in a bus system that includes a bus and at least two subscribed data processing units that are configured to exchange messages via the bus, the method comprising:

  • obtaining a message transmitted by one of the at least two subscribed data processing units and on the bus, wherein the message is structured according to a predefined logical structure that includes a start-of-frame bit, an arbitration field, a control field including a data length code, a data field, a CRC field, an acknowledge field, and an end-of-frame sequence;

    interpreting according to a first interpretation implemented when a switchover condition is not satisfied, by a data processing device, the data length code to determine a length of the data field; and

    when the switchover condition is satisfied, the data processing device;

    (i) switching from the first interpretation to a second interpretation that is at least partially in deviation from the first interpretation, and (ii) interpreting according to the second interpretation the data length code to determine the length of the data field,wherein;

    at least one of the first interpretation and the second interpretation is performed according to an algorithm that causes the processing device to interpret certain values of the data length code as indicating respective lengths of the data field that are more than eight bytes,the switchover condition is one of satisfied or not satisfied based on at least one switchover bit included in a portion of the message that does not include the data length code, andthe data length code is composed of four bits.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×