Wireless synchronous system, radio apparatuses, sensor devices, wireless synchronizing method, and computer-readable recording medium

摘要

A wireless synchronous system includes an apparatus and a sensor device. The apparatus has a radio communication unit for performing synchronous communication with an external apparatus. The apparatus generates a radio synchronizing signal having a predetermined cycle synchronized with the synchronous communication and determines a timing of controlling the apparatus based on the radio synchronizing signal. The sensor device has a radio communication unit for performing synchronous communication with the external apparatus. The sensor generates a radio synchronizing signal having a predetermined cycle being synchronized with the synchronous communication, obtains detection-data representing a state of the sensor device, and determines a timing of obtaining the detection-data in accordance with the radio synchronizing signal.

主权项

1. A wireless synchronous system comprising:
a first apparatus; a second apparatus; and a sensor device; wherein the first apparatus comprises:
a first radio communicating circuit which performs synchronous radio communication with the second apparatus via a first antenna, wherein the first radio communicating circuit generates and outputs a first radio synchronizing signal having a predetermined cycle which is synchronized with a timing of the synchronous communication, at least one of a rising edge and a falling edge of the first radio synchronizing signal coinciding with a rising edge or a falling edge of a clock signal of the second apparatus; anda first processor which receives the first radio synchronizing signal from the first radio communicating circuit and determines a timing of controlling the first apparatus in accordance with the first radio synchronizing signal; and wherein the sensor device comprises:
a second radio communicating circuit which performs synchronous radio communication with the first apparatus via a second antenna, wherein the second radio communicating circuit generates and outputs a second radio synchronizing signal having a predetermined cycle which is synchronized with a timing of the synchronous communication, at least one of a rising edge and a falling edge of the second radio synchronizing signal coinciding with a rising edge or a falling edge of a clock signal of the first apparatus;a sensor which obtains detection-data representing a state of the sensor device; anda second processor which receives the second radio synchronizing signal from the second radio communicating circuit and determines a timing of obtaining the detection-data via the sensor in accordance with the second radio synchronizing signal; wherein the first apparatus further comprises: an image pickup unit including an image sensor operable to take an image to obtain image data; a first memory; and a first real-time clock which generates a first real time signal; wherein the first processor determines a timing of taking an image by the image pickup unit in accordance with the first radio synchronizing signal, and performs control to store the image in the first memory; wherein the first processor synchronizes the first real time signal with the first radio synchronization signal to synchronize the first real time signal with a time signal in the second apparatus; and wherein the first processor correlates the first real time signal generated by the first real-time clock with the image data, which is obtained by the image pickup unit at the timing determined by the processor, and performs control to record the first real time signal correlated with the image data in the first memory.