Abstract: A system includes a first device and a second device connected via an on-board network. In a case where a driving assistance function is selectively installed on a vehicle, the first device transmits repeatedly a CAN frame having a predetermined CAN-ID from start of the vehicle to stop of the vehicle. The second device receives a CAN frame having a CAN-ID uniquely set for a function with regard to the vehicle. And the second device is configured to: (i) record to both a first recording region and a second recording region of a memory in a case where it is determined that the CAN-ID included in the received CAN frame is the predetermined CAN-ID; and (ii) record only to the second recording region in a case where it is not determined that the CAN-ID included in the received CAN frame is the predetermined CAN-ID.

Abstract: An on-board recording system includes a control device and a recording device. The control device includes a transmitting unit that outputs a transmission signal when a driving assistance function is installed on the vehicle, and the recording device includes a receiving unit, a storage unit including a first area and a second area, a first vehicle behavior detecting unit, a second vehicle behavior detecting unit, a first recording processing unit, a second recording processing unit, and a recording permitting unit that permits the first recording processing unit to record the first vehicle information in the first area, and inhibits the second recording processing unit from recording the second vehicle information in the first area, when the transmission signal has been received, and permits the second recording processing unit to record the second vehicle information in the first area when the transmission signal has not been received.

Abstract: The subject matter described herein includes methods, systems, and computer readable medium for scrambled communication of data to, from, or over a medium. According to one aspect, the subject matter described herein includes a method for communicating data in scrambled form to or over a medium. The method includes receiving analog or digital data to be transmitted to or over a medium. The method further includes modulating samples representing at least signal using the analog or digital data to produce data modulated signal samples. The method further includes scrambling the data modulated signal samples using a predetermined scrambling algorithm. The method further includes transmitting the scrambled data modulated signal samples to or over the medium. The method further includes descrambling samples received from the medium using the inverse of the predetermined scrambling algorithm to obtain the unscrambled modulated signal samples, which can then be demodulated to retrieve original data.