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A phase calibration method and electronic equipment

A technology for electronic equipment and phase calibration, applied in the field of communication, it can solve the problems of abnormal interruption of MIPI communication, and achieve the same effect of data retention time, improved stability, and data establishment time.

Active Publication Date: 2022-05-24
VIVO MOBILE COMM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Embodiments of the present invention provide a phase calibration method and electronic equipment to solve the problem of abnormal interruption of MIPI communication due to the phase shift between the clock signal CLK and the data signal DATA

Method used

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  • A phase calibration method and electronic equipment
  • A phase calibration method and electronic equipment
  • A phase calibration method and electronic equipment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] See Figure 1 , illustrating a flowchart of a phase calibration method provided in Embodiment I of the present invention, applied to an electronic device, the method comprising:

[0038] Step 101, to obtain the clock signal phase value of the camera sensor of the electronic device.

[0039] Phase calibration method of embodiments of the present invention may be applied to electronic devices, the camera sensor of the electronic device using a MIPI-DPHY interface. The electronic devices specifically include, but are not limited to: smartphones, tablet computers, e-book readers, MP3 (Moving Picture Experts Group Audio Layer III) players, MP4 (Moving Picture Experts Compressed Standard Audio Layer 4, Moving Picture Experts Group Audio Layer IV) players, laptop portable computers, Car computers, desktop computers, set-top boxes, smart TVs, wearables, and more.

[0040] Embodiments of the present invention may obtain the clock signal phase value of the camera sensor of the electroni...

Embodiment 2

[0084] For the first case, the present embodiment details the specific process of calibrating the clock signal phase value of the camera sensor of the electronic device.

[0085] In an alternative embodiment of the present invention, step 101 of the acquisition of the clock signal phase value of the camera sensor of the electronic device, comprising: in the case of the connection state of the MIPI is abnormal, the clock signal phase value of the camera sensor is obtained; the working state of the MIPI changes, specifically referring to the connection state of the MIPI from abnormal to normal.

[0086] For the first embodiment of the present invention, the camera may be functional failure, and the CPU of the electronic device receives a MIPI communication abnormal interrupt (or MIPI communication error prompt), i.e., in the case of the MIPI connection state is abnormal, the clock signal phase value of the camera sensor of the electronic device is obtained.

[0087] In the first case...

Embodiment 3

[0102] For the second case, the present embodiment details the specific process of calibrating the clock signal phase value of the camera sensor of the electronic device.

[0103] In an optional embodiment of the present invention, step 101 of obtaining the clock signal phase value of the camera sensor of the electronic device, comprising: in the case of the connection state of the MIPI is normal, the clock signal phase value of the camera sensor is obtained; the working state of the MIPI changes, specifically referring to the connection state of the MIPI from normal to abnormal.

[0104] For the second case of an embodiment of the present invention, the CPU of the electronic device may not receive a MIPI communication abnormal interrupt (or MIPI communication error prompt), i.e., in the case of the mipi connection state is normal, the clock signal phase value of the camera sensor of the electronic device is obtained.

[0105] In the second case, the working state of the MIPI in s...

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Abstract

Embodiments of the present invention provide a phase calibration method and electronic equipment. The method includes: acquiring a clock signal phase value of a camera sensor of an electronic device; taking the first change amount as a step size, adjusting the clock signal phase value successively in a first direction, and adjusting the clock signal phase value each time After the value, determine whether the working state of the mobile industry processor interface MIPI of the camera sensor has changed; wherein, the working state of MIPI changes include that the connection state of MIPI changes from normal to abnormal or the connection state of MIPI changes from abnormal to normal; if When the working state of MIPI changes, the phase value of the clock signal at this time is determined as the first phase value; the target phase value is determined according to the first phase value; the phase of the clock signal of the camera sensor is determined as the Target phase value. The embodiment of the present invention can automatically optimize the phase value of the clock signal of the camera sensor.

Description

Technical field [0001] The present invention relates to the field of communication technology, in particular to a phase calibration method and electronic devices. Background [0002] MIPI (Mobile Industry Processor Interface) DPHY is a standard generic interface for mobile industry processor interfaces. At present, MIPI-DPHY interface is widely used in mobile phone camera image sensors, is used to transmit image data, DPHY interface by CLK lane (clock signal channel) and DATAlane (data signal channel) composition, CLK lane and DATAlane are differential signals, that is, CLK lane by the positive clock signal CLKP and negative edge clock signal CLKN, DATAlane consists of a positive edge data signal DATAP and a negative edge data signal DATATAN, and its data reading uses bilateral edge sampling, that is, the rising and falling edges of the CLK both sample the data, a CLK edge, read the data level once, and sample the data twice in one clock cycle. [0003] However, in the prior art,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N17/00
CPCH04N17/002
Inventor 吕宗安
Owner VIVO MOBILE COMM CO LTD