35 results about "CCP protocol" patented technology

Methods and apparatus are presented for enabling data connectivity when a handoff occurs between one communication network and another communication network, wherein the communication networks belong to different air interface standards. The mobile station triggers a Compression Control Protocol (CCP) request message to a tethered device if the mobile station determines that a new PDSN is not enabled to perform the CCP protocol. The tethered device then responds with a CCP request message with or without new negotiation parameters. The mobile station forwards the CCP request message to the new PDSN. Since the new PDSN is not enabled with CCP, the new PDSN responds with a CCP rejection message. The rejection message is passed from the mobile station back to the tethered device. The tethered device then sends uncompressed data packets to the PDSN.

An embedded universal calibration device and method based on CCP protocol is disclosed. Said device is composed of a high-level calibrating tool running on PC for displaying the parameters to be monitored in ECU and sending commands to low-level unit, and a low-level unit running on the ECU to be calibrated for receiving the commands, executing the relative actions, returning the answer, and periodically sending the parameters to be monitored. Said high-level calibrating tool and low-level unit are connected via USB, CAN interface and CAN bus and the CN packets are used to calibrate and monitor the parameters in ECU.

A calibration method based on CCP protocol for the controller of electric car with mixed power features that between the low-class controller and upper-class host, which are connected via CAN bus, the upper-class host can initialize the low-class controller and calibrate and monitor its parameters according to CCP protocol.

The invention discloses a CCP protocol-based ECU driving record acquisition device and a CCP protocol-based ECU driving record acquisition method. The device comprises a single chip microcomputer module, a power module, a CAN module, an SD card module and an operating button group, wherein one end of the CAN module is connected with a to-be-acquired ECU and the other end of the CAN module is connected with a single chip microcomputer module; and the power module, the SD card module and the operating button group are electrically connected with the single chip microcomputer module. The CCP protocol-based ECU driving record acquisition device, serving as an auxiliary tool in the finished automobile calibration process, directly establishes communication with the ECU, can completely meet the requirement that an engineer only needs to acquire some important parameters and does not need to calibrate the occasion, is convenient and quick in operation, and reduces manpower and equipment costs. The CCP protocol-based ECU driving record acquisition device is small in size and convenient to carry and operate, one driver can finish road test work in the driving process, and the acquired engine and finished automobile data are finally stored by the SD card in real time.

The invention is suitable for the technical field of vehicles and provides a vehicle data acquisition terminal. The vehicle data acquisition terminal comprises a main control module, an analog quantity acquisition module, a CAN (Controller Area Network) acquisition module and a wireless communication module, wherein the analog quantity acquisition module, the CAN acquisition module and the wireless communication module are respectively connected with the main control module; the main control module is used for controlling the analog quantity acquisition module, the CAN acquisition module and the wireless communication module to work; the analog quantity acquisition module is used for acquiring analog quantity parameter information of a vehicle; the CAN acquisition module is used for acquiring first parameter information of a CAN bus of the vehicle and reading second parameter information in corresponding memories in all controllers of the vehicle through a CCP (CAN Calibration Protocol); and the wireless communication module is used for transmitting the analog quantity parameter information, the first parameter information and / or the second parameter information to a server in a wireless communication way. Accordingly, the invention further provides a vehicle information acquisition system comprising the vehicle data acquisition terminal. Therefore, according to the vehicle data acquisition terminal and the vehicle information acquisition system, the parameter information in the corresponding memories in all the controllers of the vehicle can be acquired through the CCP protocol, so that the information acquisition scope is enlarged.