METHOD FOR TRANSMITTING A DATUM FROM A TIME-DEPENDENT DATA STORAGE MEANS

• US 20090327545A1
• Filed: 06/20/2006
• Published: 12/31/2009
• Est. Priority Date: 06/20/2006
• Status: Active Grant

• Current Assignee: NXP USA, Inc. (NXP Semiconductors NV)
• Original Assignee: Freescale Semiconductor, Inc. (NXP Semiconductors NV)
• Inventors: Patzelt, Christoph, Litovtchenko, Vladimir, Moeller, Dirk
• Granted Patent: US 7,984,210 B2
• Time in Patent Office: Days
• US Class Current: 710/105
• CPC Class Codes: H04L 12/40006 Architecture of a communication node current supply arrangements H04L12/10; intermediate storage or scheduling H04L49/90
• CPC Class Codes: H04L 2012/40241 Flexray
• CPC Class Codes: H04L 43/00 Arrangements for monitoring or testing data switching networks
• CPC Class Codes: H04L 43/0817 by checking functioning
• CPC Class Codes: H04L 49/90 Buffering arrangements

Abstract

A method of transmitting a datum from a time-dependent data storage means, the datum being that most recently acquired before the occurrence of an allocated transmission slot; the method comprising the steps of: writing a first acquired datum to a first side of the data storage means; transferring the first datum to a second side of the data storage means; and writing a next datum, acquired before the occurrence of the next allocated transmission slot, to the first side of the data storage means; wherein the method further comprises the step of: replacing the first acquired datum in the second side of the data storage means with the next acquired datum; and transmitting the next acquired datum from the data storage means at the next allocated transmission slot.

Claims

1. A method of transmitting a datum from a time-dependent data storage means, the datum being that most recently acquired before the occurrence of an allocated transmission slot, the method comprising the steps of:

writing a first acquired datum to a first side of the data storage means;

transferring the first datum to a second side of the data storage means; and

writing a next datum, acquired before the occurrence of the next allocated transmission slot, to the first side of the data storage means;

replacing the first acquired datum in the second side of the data storage means with the next acquired datum; and

transmitting the next acquired datum from the data storage means at the next allocated transmission slot.

2. The method as claimed in claim 1, wherein the method is operated within a time division multiple access protocol.

3. The method as claimed in claim 1, wherein the method is operated within the FlexRay (trademark) protocol.

7. The method as claimed in claim 2, wherein the method is operated within the FlexRay (trademark) protocol.

4. A time-dependent data storage system comprising:

a logic unit and a double buffer;

wherein the double buffer is adapted to store in a transmit-side a first datum acquired whilst waiting for a next allocated transmission slot and to store in a host-side a further datum subsequently acquired whilst waiting for the same transmission slot;

wherein the logic unit is adapted to transfer the further datum from the host-side to the transmit side for transmission therefrom upon the occurrence of the transmission slot.

5. The system of claim 4 wherein the system operates in accordance with a time division multiple access protocol.

6. The system of claim 4 wherein the system operates in accordance with the FlexRay (trademark) protocol.

8. The system of claim 5 wherein the system operates in accordance with the FlexRay (trademark) protocol.