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Method for inter-module communication

An inter-module, communication technology, applied in the multimedia field, can solve the problem of no error detection mechanism for inter-module communication, inability to separate commands and data, etc.

Inactive Publication Date: 2009-05-06
SICHUAN CHANGHONG ELECTRIC CO LTD
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Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a method for inter-module communication in order to solve the shortcomings of the existing inter-module communication without an error detection mechanism and the inability to separate commands and data

Method used

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  • Method for inter-module communication

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Embodiment

[0016] The general communication interface in this example takes the UART port as an example. A UART port is reserved on each module, and the modules that need to communicate are connected to each other through the UART port. The system flow is as follows: figure 1 .

[0017] According to the actual needs, set the UART baud rate (Baud Rate), parity (Parity), data bits (Data bits), stop bits (Stop bits), data flow control (Flow Control) and other parameters to make the module Normal communication can be carried out through UART.

[0018] Communication data is sent and received in the form of data packets. The data packet consists of three parts: header, data content, and end bit. The data content is an information data packet, which is used to realize various functions, specific functions and data. , can be customized according to actual needs, used for data interaction and command transmission, etc., the data length ranges from 0 to 26; the end bit is the end sign of the data...

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Abstract

The invention relates to the multimedia technology, and solves the problems that no error detecting mechanism is available in communication among modules, so that the command and data can not be divided. The invention provides a method for communicating among modules and adopts the technical proposal that firstly, each module is provided with a pre-reserved general communication interface; in use, the modules need to communicate are connected by the general communication interface, and corresponding parameters of the general purpose communication interface are set so as to cause the modules to communicate normally with each other through the general communication interface. The communication data are transmitted and received in form of data packet. The data packet comprises a packet header, the data content and an end bit, wherein the packet header comprises an initial identifier, data types, the data size and a parity bit. After receiving the data packet, the module checks the data packet according to the packet header in the data packet; and if error occurs, no data can be processed. The invention has the advantages that the efficiency of the system can be enhanced to avoid confusion so as to be suitable for the communication among multimedia modules.

Description

technical field [0001] The invention relates to multimedia technology, in particular to the communication technology between multimedia modules. Background technique [0002] At present, electronic consumer products are changing with each passing day, and new products that are constantly being launched have added many new functions, but most of the functions of the new products are the same as those of the original products, and only some functions have been improved and added. For product design, new products It can be redesigned, and new functional modules can also be added on the basis of the original design. To redesign a new product, everything needs to start from scratch, from the selection of hardware platform to the construction of software system, it takes a lot of time and capital. Many new functions can adopt modular design, so adding new functional modules on the basis of the original design can save a lot of time and effort. The hardware design and software arc...

Claims

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Application Information

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IPC IPC(8): H04L1/00
Inventor 王建国黄葛玲钟怡
Owner SICHUAN CHANGHONG ELECTRIC CO LTD
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