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Communication system and optical navigation device

A communication system, optical navigation technology, applied in the direction of instrument, electrical digital data processing, input/output process of data processing, etc. and other problems to achieve the effect of reducing the frequency of use, reducing the required time, and reducing the leakage of the device

Active Publication Date: 2016-08-17
PIXART IMAGING INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Using a four-wire serial bus to transmit data requires more input and output ports, which is costly and takes a long time to transmit data

Method used

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  • Communication system and optical navigation device
  • Communication system and optical navigation device
  • Communication system and optical navigation device

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Embodiment Construction

[0048] In order to make the above and other objects, features and advantages of the present invention more apparent, the following will be described in detail with accompanying drawings. In the description of the present invention, the same components are denoted by the same symbols, and will be described first.

[0049] The invention discloses a fast reading mechanism, which can use fewer transmission channels or I / O ports to transmit data, and the total bytes to be transmitted in one read operation are less. Therefore, the time required for data transmission can be reduced, the usage frequency of the I / O port can be reduced, and the device leakage can be reduced.

[0050] like Figure 4 As shown, the embodiment of the present invention discloses a transmission interface 4 with a fast reading mechanism, which can be used to connect a master device (master device) 2 and a slave device (slave device) 3 . The transmission interface 4 may include a trigger channel 43 and a data...

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PUM

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Abstract

A communication system comprises a transmission interface, a main control end and a controlled end. The transmission interface comprises a triggering / confirming passage used for transmitting triggering signals and confirming signals and a data transmission passage used for transmitting normal data or simplified data, the main control end sends the triggering signals through the triggering / confirming passage before data transmission, and after receiving the triggering signals, the controlled end transmits the normal data or the simplified data to the main control end through the data transmission passage.

Description

technical field [0001] The invention relates to a communication system and an optical navigation device, in particular to a communication system and an optical navigation device which can dynamically adjust the data transmission format. Background technique [0002] An optical mouse uses a light source and an image sensor to detect the movement of the mouse relative to an underlying tracking surface. figure 1 A block diagram showing a conventional optical mouse. like figure 1 As shown, the conventional optical mouse 1 includes a microprocessor 11 and an optical sensing module 12 , wherein the microprocessor 11 and the optical sensing module 12 are connected by a serial peripheral interface bus (SPI) 13 . Generally, the serial peripheral interface bus 13 can be a four wire serial bus (four wire serial bus) or a two wire serial bus (two wire serial bus). The microprocessor 11 can obtain the displacement data obtained by the optical sensing module 12 through the serial perip...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F3/0354G06F3/038
Inventor 陈俊玮林永昌王聪法
Owner PIXART IMAGING INC