Variable rate serial communication method, device, communication chip, storage device and system
A serial communication and rate technology, applied in the registration/indication of vehicle operation, registration/indication, instruments, etc., can solve the problems of high image quality and high overall cost, and achieve high image quality, compatibility, and low cost. Effect
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Embodiment 1
[0030] figure 1 A specific structural block diagram of the serial communication system provided by Embodiment 1 of the present invention is shown. For convenience of description, only parts related to the embodiment of the present invention are shown. In this embodiment, the serial communication system includes: a main camera system, a rear camera system and a serial communication cable.
[0031] Wherein, the main camera system includes a first main control unit and a first camera, the first main control unit includes at least one first USB module and a first clock generator, and the rear camera system includes a second main control unit and a second camera , the second main control unit includes at least one second USB module and a second clock generator, and the main camera system and the rear camera system are connected together through a USB serial communication cable.
[0032] Under standard conditions, the first clock generator generates a reference clock frequency of 1...
Embodiment 2
[0039] figure 2 It shows the implementation flow of the variable rate serial communication method provided by Embodiment 2 of the present invention. The implementation subject of this method is the first master control unit or the second master control unit. The details are as follows:
[0040] In step S201, during the communication process, the clock generator is controlled to generate a reference clock frequency of the serial interface according to the instruction of changing the communication bandwidth.
[0041] In step S202, according to the reference clock frequency, a working clock frequency of the serial interface is generated through a preset first conversion function.
[0042] In step S203, according to the working clock, the communication frequency of the serial interface is generated through a preset second conversion function, and the serial interface is USB1.1.
[0043] Preferably, the standard communication frequency of the serial interface is greater than or e...
Embodiment 3
[0046] image 3 A specific structural block diagram of the variable rate serial communication device provided by Embodiment 3 of the present invention is shown, and for convenience of description, only parts related to the embodiment of the present invention are shown. In this embodiment, the variable rate serial communication device includes: a reference clock generation unit 31 , a working clock generation unit 32 and a communication frequency generation unit 33 .
[0047] Wherein, the reference clock generating unit 31 is used in the communication process to control the clock generator to generate the reference clock frequency of the serial interface according to the instruction of changing the communication bandwidth;
[0048] A working clock generating unit 32, configured to generate a working clock frequency of the serial interface by preset a first conversion function according to the reference clock frequency;
[0049] The communication frequency generation unit 33 is c...
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