Vehicle electronic control device and data-receiving method

A vehicle electronic control device having a first microcomputer connected to an in-vehicle network and a second microcomputer connected to said in-vehicle network, wherein

• said first microcomputer includes:
• process load level detecting means that detects a process load level of said first microcomputer;
• a table in which the process load level is associated with data identification information;
• and
• reception data reducing means that, in a case where said process load level becomes greater than or equal to a first threshold level, stops receiving one or more data which said first microcomputer has received from said in-vehicle network before said process load level becomes greater than or equal to said first threshold value,
• said second microcomputer includes:
• process load level estimating means that estimates said process load level of said first microcomputer;
• substitute data receiving means that receives data, which said first microcomputer stops receiving, from said in-vehicle network in a case where said process load level estimated by said process load level estimating means becomes greater than or equal to a second threshold value;
• and
• data transmitting means that transmits in a lump a plurality of data received by said substitute data receiving means to said first microcomputer through serial communication,
• said first microcomputer includes:
• data receiving means that applies a reception interrupt to said first microcomputer each time data is received from said in-vehicle network;
• and
• buffer transferring means that stores the data which said data transmitting means transmitted through serial communication in a buffer area having a size larger than a size of data which said data receiving means receives in one time reception interrupt, and
• said buffer transferring means applies a reception interrupt to said first microcomputer in a case where data of a size of said buffer area is received through serial communication.

A vehicle electronic control device having a first microcomputer connected to an in-vehicle network and a second microcomputer connected to said in-vehicle network, wherein

• said first microcomputer includes:
• process load level detecting means that detects a process load level of said first microcomputer;
• a table in which the process load level is associated with data identification information;
• and
• reception data reducing means that, in a case where said process load level becomes greater than or equal to a first threshold level, stops receiving one or more data which said first microcomputer has received from said in-vehicle network before said process load level becomes greater than or equal to said first threshold value,
• said second microcomputer includes:
• process load level estimating means that estimates said process load level of said first microcomputer;
• substitute data receiving means that receives data, which said first microcomputer stops receiving, from said in-vehicle network in a case where said process load level estimated by said process load level estimating means becomes greater than or equal to a second threshold value;
• and
• data transmitting means that transmits in a lump a plurality of data received by said substitute data receiving means to said first microcomputer through serial communication,
• said first threshold value is greater than said second threshold value, and
• said substitute data receiving means receives data which said first microcomputer schedules to stop receiving from said in-vehicle network earlier than said reception data reducing means stops receiving one or more data.

A vehicle electronic control device having a first microcomputer connected to an in-vehicle network and a second microcomputer connected to said in-vehicle network, wherein

• said first microcomputer includes:
• process load level detecting means that detects a process load level of said first microcomputer;
• a table in which the process load level is associated with data identification information;
• and
• reception data reducing means that, in a case where said process load level becomes greater than or equal to a first threshold level, stops receiving one or more data which said first microcomputer has received from said in-vehicle network before said process load level becomes greater than or equal to said first threshold value,
• said second microcomputer includes:
• process load level estimating means that estimates said process load level of said first microcomputer;
• substitute data receiving means that receives data, which said first microcomputer stops receiving, from said in-vehicle network in a case where said process load level estimated by said process load level estimating means becomes greater than or equal to a second threshold value;
• and
• data transmitting means that transmits in a lump a plurality of data received by said substitute data receiving means to said first microcomputer through serial communication,
• said reception data reducing means receives one or more data from said in-vehicle network after notifying said second microcomputer that reception of one or more data is stopped, and
• said substitute data receiving means starts receiving the data, which said first microcomputer stops receiving, from said in-vehicle network upon receipt of a notification that reception of data from said microcomputer is stopped.

A vehicle electronic control device having a first microcomputer connected to an in-vehicle network and a second microcomputer connected to said in-vehicle network, wherein

• said first microcomputer includes:
• process load level detecting means that detects a process load level of said first microcomputer;
• a table in which the process load level is associated with data identification information;
• and
• reception data reducing means that, in a case where said process load level becomes greater than or equal to a first threshold level, stops receiving one or more data which said first microcomputer has received from said in-vehicle network before said process load level becomes greater than or equal to said first threshold value,
• said second microcomputer includes:
• process load level estimating means that estimates said process load level of said first microcomputer;
• substitute data receiving means that receives data, which said first microcomputer stops receiving, from said in-vehicle network in a case where said process load level estimated by said process load level estimating means becomes greater than or equal to a second threshold value;
• and
• data transmitting means that transmits in a lump a plurality of data received by said substitute data receiving means to said first microcomputer through serial communication,
• said first microcomputer includes a first table in which said process load level of a higher level is associated with said data identification information having a higher priority order,
• said reception data reducing means receives data of said data identification information, which is associated with said process load level in said first table, from said in-vehicle network,
• said second microcomputer includes a second table in which said process load level of a higher level is associated with said data identification information having a higher priority order, and
• said substitute data receiving means receives data of said data identification information, which is associated with said process load level estimated by said process load level estimating means in said second table from said in-vehicle network.