Serial transmission device and signal transmission method

Abstract

The invention relates to a serial transmission device and a signal transmission method. The serial transmission device comprises a plurality of data transmission devices which comprise a first shift register, an error detection circuit and a second shaft register. The second shift register is used for receiving a second serial input signal and generating output signals on the basis of a clock signal; the error detection circuit is used for receiving the output signals and first serial input signals from the second shift register and selecting one of the output signals and first serial input signals on the basis of the error detection result to generate output signals; the first shift register is used for receiving output signals from the error detection circuit and generating serial output signals on the basis of the clock signal, wherein the second serial input signal is a first serial input signal from at least the previous-level data transmission device, and the first serial input signal is the serial output signal from the previous-level data transmission device. The invention aims at achieving the effect that the serial transmission data are not interrupted during a fault of the transmission device.

Description

technical field [0001] The invention relates to a transmission device, in particular to a serial transmission device and a signal transmission method thereof. Background technique [0002] The communication transmission types between the controller and the peripheral device or between the controller and the controller are divided into parallel transmission communication (Parallel Communication) and serial transmission communication (Serial Communication), among which, serial transmission communication only needs three transmission lines (clock signal line , data signal lines and latch signal lines) to transmit and receive signals. The transmission mode is a mode of transmitting one bit of data through a clock signal, and sequentially transmits the input serial data to the connected transmission device. After the serial data is transmitted to each serially connected transmission device, the controller generates a latch signal to latch and generate a plurality of parallel out...

AI Technical Summary

Problems solved by technology

[0005] However, when one of the data transmission devices of the serial transmission devices 11 fails, the transmitted serial data will be interrupted and cannot continue to be transmitted.

For example, when the serial transmission device is applied to a large advertising billboard, the failure of any transmission device will cause the displayed information to be incomplete and difficult to recognize

Especially when the serial transmission device is applied to traffic signs or transaction message display devices, the failure of any transmission device may lead to loss of life and property

In addition, in the application of LED backlight, if the serial transmission method is used to transmit the dynamic dimming data of LED, the failure of any transmission device may cause the complete failure of the entire LED backlight module. Therefore, the present invention provides a serial transmission method Device and signal transmission method thereof, so as to avoid the problem of interruption of data transmission when the above-mentioned failure occurs

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