US 10,310,773 B2Granted

Systems and methods for retaining data in a memory

AssigneeGM Global Technology Operations LLC

InventorFred W. Huntzicker

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Abstract

Methods, systems, and vehicles are provided for retaining data in a vehicle. In various embodiments, the vehicle includes a sensor, a processor, and a memory. The sensor is configured to sense an aspect of the vehicle. The processor is configured to receive data from the sensor, sample the data at a first rate and retain the data at a second rate that is less than the first rate while the vehicle is in operation. The memory is in communication with the processor, and includes a plurality of storage locations each identified with a unique address. The processor is further configured to determine a current storage location address for a latest sample of the data at the first rate such that older samples of data are retained at the second rate less frequent than the first rate while the vehicle is in operation.

Claims14

Dependent claims

A method of retaining data in a memory of a vehicle having a plurality of data storage locations, the method comprising, while the vehicle is in operation:

receiving data via a computer processor onboard the vehicle;
sampling the data at a first sampling rate, automatically via the computer processor onboard the vehicle;
retaining the data at a second rate that is less than the first sampling rate, via the computer processor onboard the vehicle;
determining, via the computer processor onboard the vehicle, a current storage location address in non-transitory computer memory onboard the vehicle for a latest sample of the data at the first sampling rate such that older samples of data are retained at a second sampling rate less frequent than the first sampling rate, wherein the current storage address is determined based on a plurality of parameters for the non-transitory computer memory, including:
a minimum address Addmin, a modula index ModIdx that equal to a number of arrays, and a size Mmax of a respective array;
and
storing, via the computer processor onboard the vehicle, the latest sample of the data at the current storage location address in the non-transitory computer memory onboard the vehicle;
wherein:
newer samples of data are automatically retained at a rate that is more frequent than the retention of older samples of data;
and
when the newer data is received, a first part of the older data is selectively maintained in the non-transitory computer memory, whereas a second part of the older data is selectively overwritten in the non-transitory computer memory by the newer data at the current storage address of the non-transitory computer memory based on the plurality of parameters for the non-transitory computer memory, including:
the minimum address Addmin the modula index ModIdx, and the size Mmax of the respective array;
and
wherein determining the current storage location address (Adds) is determined with the expression:
Add
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+
int
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mod
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wherein Addmin is a minimum address, ModIdx is a modula index equal to the number of arrays, Ts is a consecutive integer representing the latest sample of the data, and Mmax n represents the size of the respective array.

79 more elements

A vehicle, comprising:

a sensor configured to sense an aspect of the vehicle;
a processor configured to receive data from the sensor, sample the data at a first rate and retain the data at a second rate that is less than the first rate while the vehicle is in operation;
a memory in communication with the processor, the memory including a plurality of storage locations each identified with a unique address;
wherein the processor is further configured to determine a current storage location address in the memory for a latest sample of the data at the first rate such that older samples of data are retained at the second rate less frequent than the first rate while the vehicle is in operation, wherein the current storage address is determined based on a plurality of parameters for the non-transitory computer memory, including:
a minimum address Addmin, a modula index ModIdx that equal to a number of arrays, and a size Mmax of a respective array;
and
wherein the latest sample of data is received, a first part of the older samples of data is selectively maintained in the non-transitory computer memory, whereas a second part of the older samples of data is selectively overwritten in the non-transitory computer memory by the latest sample of data at the current storage address of the non-transitory computer memory based on the plurality of parameters for the non-transitory computer memory, including:
the minimum address Addmin, the modula index ModIdx, and the size Mmax of the respective array;
and
wherein the processor is configured to determine the current storage location address (Adds) with the expression:
Add
s
=
Add
m
⁢
⁢
i
⁢
⁢
n
+
{
∑
k
=
0
T
s
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modModIdx
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M
ma
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x
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(
k
-
1
)
}
+
int
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(
T
s
ModIdx
)
⁢
mod
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⁢
M
ma
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⁢
x
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(
T
s
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mod
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ModIdx
)
,
wherein Addmin is a minimum address, ModIdx is a modula index equal to the number of arrays, Ts is a consecutive integer representing the latest sample of the data, and Mmax n represents the size of the respective array.

70 more elements

A method of retaining data in a memory of a vehicle having a plurality of data storage locations, the method comprising, while the vehicle is in operation:

receiving data via a computer processor onboard the vehicle;
storing, via the computer processor onboard the vehicle, the latest sample of the data at a current storage location address at a constant storing rate to a non-transitory computer memory onboard the vehicle, wherein the current storage location address (Adds) with the expression:
Add
s
=
Add
m
⁢
⁢
i
⁢
⁢
n
+
{
∑
k
=
0
T
s
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modModIdx
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M
m
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a
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x
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(
k
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1
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}
+
int
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(
T
s
ModIdx
)
⁢
mod
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⁢
M
m
⁢
⁢
a
⁢
⁢
x
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(
T
s
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mod
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ModIdx
)
wherein Addmin is a minimum address, ModIdx is a modula index equal to the number of arrays, Ts is a consecutive integer representing the latest sample of the data, and Mmax n represents the size of the respective array;
and
retaining the data at a plurality of retaining rates, each of the second rates being less than the first rate;
wherein newer samples of data are automatically retained at a first sampling rate, and older samples of data are automatically retained at a second sampling rate that is less frequent than the first sampling rate;
and
wherein, when the newer data is received, a first part of the older data is maintained in the non-transitory computer memory, whereas a second part of the older data is overwritten in the current storage location non-transitory computer memory by the newer data as determined by the expression, based on the minimum address Addmin, the modula index ModIdx, and the equal to the number of arrays, Ts the consecutive integer representing the latest sample of the data, and represents the size Mmax n of the respective array.

72 more elements

Dependencies are inferred from the claim text.

Facts

Application: 15/873,064Filed 17 Jan 2018 · continuation in part
Priority: 21 Mar 2014
Published: US 2018/0143789 A124 May 2018
Granted: 4 Jun 2019
Term ends: Not estimatedThe source records don’t support an estimate.

Classification9 codes

G06F 3/0679
Single storage device: non-volatile semiconductor memory device, e.g. flash memory, one time programmable memory [OTP]
G06F 3/0619
Improving the reliability of storage systems: in relation to data integrity, e.g. data losses, bit errors
G06F 3/0665
Virtualisation aspects: at area level, e.g. provisioning of virtual or logical volumes
G11B 20/10527
Digital recording or reproducing: audio or video recording; Data buffering arrangements

Family

Application14/222,308Parent of this continuation-in-part · filed 21 Mar 2014
US 2018/0143789 A1Pre-grant publication · published 24 May 2018
US 2015/0268877 A1Published application
US 10,310,773 B2This patent

From the US filing history. Foreign family members aren’t listed.

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