The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 10, 2024
Filed:
Nov. 09, 2021
Dongguan Huabel Electronic Technology Co., Ltd., Guangdong, CN;
Gang Liu, Guangdong, CN;
DONGGUAN HUABEL ELECTRONIC TECHNOLOGY CO., LTD., Guangdong, CN;
Abstract
A serial port control system based on a complex programmable logic device (CPLD) includes a console, a plurality of processors, and a CPLD between the console and the plurality of processors. The CPLD includes a controller and a register. The console is configured to transmit an instruction including a register address and a register content of a serial port of a corresponding processor to the controller which parses the instruction to obtain the corresponding register address and register content and write them to the register; and the controller is configured to communicate with the serial port of the corresponding processor according to the register address and the register content. The controller and the register within the CPLD can automatically switch the serial port to communicate with the corresponding processor, thereby improving the efficiency.