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Serial data communication method and device

A serial data and data technology, applied in the field of serial data communication methods and devices, can solve the problems of inability to operate, inaccurate operation, and difficulty in obtaining information from a slave control unit.

Inactive Publication Date: 2004-07-07
LG ELECTRONICS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the transmitted data from the master unit is damaged due to environmental noise, the slave unit may process the data without recognizing the damage, and may perform inaccurate operations
When data reception is stopped while the master unit is receiving data, in other words, when the master unit occupies the clock line due to its abnormality, the slave unit cannot operate
When information needs to be obtained from the master unit or sent on the slave unit, it is difficult to obtain information independently without the processing operation of the master unit

Method used

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  • Serial data communication method and device
  • Serial data communication method and device
  • Serial data communication method and device

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Embodiment Construction

[0022] Figure 4 is a block diagram showing serial bus line connections applied to the serial data communication method of the present invention. It comprises a first control unit 1 and a second control unit 2, each of which can operate as a master or a slave as required. When transmitting and receiving data, the two control units transmit and receive various identification signals and acknowledgment signals before and after the data unit via a clock signal as an intermediary.

[0023] will refer to Figure 5 with Figure 9 The operation of the present invention will be described in detail.

[0024] Figure 4 Indicates the 4 bus lines installed between the first control unit 1 and the second control unit 2, TXD is the data transmitted to the second control unit 2, RXD is the data received at the first control unit 1, TXC is The clock signal transmitted to the second control unit 2 , RXC is the clock signal received at the first control unit 1 .

[0025] Wherein, the two co...

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Abstract

A method and an apparatus for serial data communication employs a data transmission process which transmits data from one control unit to the another control unit and at the same time checks a reception confirmation signal on each number of the data by transmitting a clock signal, and a data reception process which receives the data on the one control unit from the other control unit and checks a transmission confirmation signal on the each number of the data by transmitting the clock signal.

Description

technical field [0001] The present invention relates to the technology of transmitting and receiving data between control units through a serial bus, and in particular to a serial data communication method and device, which, through two-way communication between two independent communication control units, can be achieved in one control unit When an abnormality prevents communication, another control unit handles the task independently, so that accurate data transmission and reception can be performed regardless of changes in the environment. Background technique [0002] In conventional serial data transmission technology, data is transmitted and received under the control of the main control unit. In other words, when data transmission and reception are performed between two control units, one master control unit controls the clock. Accordingly, a slave control unit transmits and receives data according to a clock controlled by the master control unit. [0003] 1 and 2 s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/00G06F13/42H04L1/16H04L7/00
CPCG06F13/4286H04L1/1692H04L7/0008H04L12/00
Inventor 金载成
Owner LG ELECTRONICS INC