Serial data communication device and serial data communication method
AssigneeOMRON Corporation
InventorKenji Sato
Life of this patent
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Abstract
The purpose of the present invention is to cause a reception side communication device to appropriately detect a start bit. A serial communication unit (100), which transmits serial data by a combination of a high level signal and a low level signal, is provided with: a serial communication part (111) that provides the start bit on the head of the serial data, and transmits the high level signal in a prescribed duration just before the start bit; and a duration setting part (113) that sets the duration.
Claims3
A serial data communication device that transmits serial data by a combination of a high level signal and a low level signal, the serial data communication device comprising:
- a memory;
- and
- a processor, coupled to the memory, wherein the processor is configured to implement:
- a signal transmission part that arranges a start bit on the head of the serial data and transmits the high level signal in a prescribed duration immediately before the start bit;
- a duration setting part that sets the duration;
- a setting reception part for receiving a set value of the duration from an external device, wherein the duration setting part sets the duration according to the set value received by the setting reception part, and
- a communication establishment determination part that determines whether or not communication with a communication device being a communication destination has been established, wherein the duration setting part increases the duration and decides the duration at a time when communication is determined to have been established by the communication establishment determination part.
A serial data communication method implemented by a serial data communication device that transmits serial data by a combination of a high level signal and a low level signal, the serial data communication method comprising:
- a signal transmission step in which a start bit is arranged on the head of the serial data and a high level signal is transmitted in a prescribed duration immediately before the start bit;
- a duration setting step in which the duration is set;
- a setting reception step that receives a set value of the duration from an external device, wherein the duration setting step sets the duration according to the set value received by the setting reception step;
- and
- a communication establishment determination step that determines whether or not communication with a communication device being a communication destination has been established, wherein the duration setting part increases the duration and decides the duration at a time when communication is determined to have been established by the communication establishment determination part.
Dependencies are inferred from the claim text.