CN105811503B - A kind of control communication means based on USB Type-C standards - Google Patents
A kind of control communication means based on USB Type-C standards Download PDFInfo
- Publication number
- CN105811503B CN105811503B CN201610168504.3A CN201610168504A CN105811503B CN 105811503 B CN105811503 B CN 105811503B CN 201610168504 A CN201610168504 A CN 201610168504A CN 105811503 B CN105811503 B CN 105811503B
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- CN
- China
- Prior art keywords
- host
- standards
- voltage
- usb type
- grade
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000004891 communication Methods 0.000 title claims abstract description 13
- 238000001514 detection method Methods 0.000 claims abstract description 5
- 238000000034 method Methods 0.000 claims abstract description 4
- 108700025151 PD protocol Proteins 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/007—Regulation of charging or discharging current or voltage
- H02J7/0071—Regulation of charging or discharging current or voltage with a programmable schedule
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/007—Regulation of charging or discharging current or voltage
- H02J7/00712—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters
- H02J7/007182—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters in response to battery voltage
- H02J7/007184—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters in response to battery voltage in response to battery voltage gradient
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention discloses a kind of control communication means based on USB Type C standards, this method comprises provide that detection finds that connected is Rd/Ra, and link is established；It is 2Rd/2Rd by adjusting pull down resistor, and Rd/Rd is returned to after keeping 200ms, host receives rear voltage and tunes up one grade when device needs host to increase charging voltage；It is Ra/Ra by adjusting pull down resistor, and Rd/Rd is returned to after keeping 200ms, host receives rear voltage and turns one grade down when device needs host to reduce charging voltage.The present invention can help host and divice after link is established, and further exchange charge control information, and realization is simple, without complicated USB PD agreements or increase excessive additional circuit, you can meet the charge control between commonly used equipment.
Description
Technical field
The present invention relates to the control communications fields, and in particular to a kind of control communication means based on USB Type-C standards.
Background technology
Currently, energy consumption of mobile equipment amount rapidly increases, and battery capacity nevertheless suffers from considerable restraint, therefore to quick charge
Propose increasingly higher demands.For this purpose, industry proposes many quick charge schemes, such as the Battery of USB standard tissue
Charge v1.2 standards or the 2.0 quick charge schemes of Quick Charge of Qualcomm.In USB Type-C agreements,
After link is established between Host and Device, control communication cannot be carried out, if necessary to communicate, must just be assisted by USB PD
View, and USB PD protocol realizations are complicated, economy is poor for simple application.
Invention content
The purpose of the present invention is on the basis of current USB Type-C v1.2 standards, it is proposed that a kind of simple realization is filled
The method that signal communication is controlled between electric appliance and mobile device, i.e., a kind of control communication protocol based on USB Type-C standards.
To achieve the above object, the technical solution that the present invention takes is：
A kind of control communication protocol based on USB Type-C standards, the communication protocol content comprise provide that detection is found
Connected is Rd/Ra, and link is established；Link refers to the link between host and device, specifically, when host has found certainly
There are Rd and Ra pull down resistors on oneself ports CC1 and CC2, that is, think that there are a device equipment on port, to establish
Link.
It is 2Rd/2Rd by adjusting pull down resistor, and after keeping 200ms when device needs host to increase charging voltage
Rd/Rd is returned to, host receives rear voltage and tunes up one grade；That is, host has found the resistance variations of the ports CC1/CC2, and
After variation keeps 200ms, that is, think to have received voltage adjustment signal.
It is Ra/Ra by adjusting pull down resistor when device needs host to reduce charging voltage, and is returned after keeping 200ms
Rear voltage, which is received, to Rd/Rd, host turns one grade down.
The invention has the advantages that：
It can help host and divice after link is established, further exchange charge control information, realize simple, nothing
By complicated USB PD agreements or excessive additional circuit need to be increased, you can meet the charge control between commonly used equipment, it can
To be widely used in USB Type-C mobile phones, tablet computer, charger, the various equipment such as mobile power.
Description of the drawings
Fig. 1 is the realization method schematic diagram that Host is connected with Device by the ports CC1/CC2 in the embodiment of the present invention.
Specific implementation mode
In order to make objects and advantages of the present invention be more clearly understood, the present invention is carried out with reference to embodiments further
It is described in detail.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not used to limit this hair
It is bright.
As shown in Figure 1, an embodiment of the present invention provides a kind of control communication protocol based on USB Type-C standards, it is described
Communication protocol content includes
Assuming that detection finds that connected is Rd/Ra, link is established, and Host output currents can be 500mA at this time,
1.5A, or 3A；
It is 2Rd/2Rd by adjusting pull down resistor, and after keeping 200ms when device needs host to increase charging voltage
Rd/Rd is returned to, host receives rear voltage and tunes up one grade；
It is Ra/Ra by adjusting pull down resistor when device needs host to reduce charging voltage, and is returned after keeping 200ms
Rear voltage, which is received, to Rd/Rd, host turns one grade down.
Embodiment 1
Detection finds that connected is 5.1K/5.1K, and link is established and locked；
It is 10K/10K by adjusting pull down resistor, and after keeping 200ms when device needs host to increase charging voltage
5.1K/5.1K is returned to, voltage raises one grade；
It is 1.2K/1.2K by adjusting pull down resistor, and keep 200ms when device needs host to reduce charging voltage
After return to 5.1K/5.1K, voltage lowers one grade.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the principle of the present invention, it can also make several improvements and retouch, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (1)
1. a kind of control communication means based on USB Type-C standards, which is characterized in that this method includes：
Detection finds that connected is 5.1K/5.1K, and link is established；
It is 10K/10K by adjusting pull down resistor, and returned to after keeping 200ms when device needs host to increase charging voltage
5.1K/5.1K, host receive rear voltage and tune up one grade；
It is 1.2K/1.2K by adjusting pull down resistor when device needs host to reduce charging voltage, and is returned after keeping 200ms
Rear voltage, which is received, to 5.1K/5.1K, host turns one grade down.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610168504.3A CN105811503B (en) | 2016-03-23 | 2016-03-23 | A kind of control communication means based on USB Type-C standards |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610168504.3A CN105811503B (en) | 2016-03-23 | 2016-03-23 | A kind of control communication means based on USB Type-C standards |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105811503A CN105811503A (en) | 2016-07-27 |
| CN105811503B true CN105811503B (en) | 2018-08-31 |
Family
ID=56454595
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610168504.3A Expired - Fee Related CN105811503B (en) | 2016-03-23 | 2016-03-23 | A kind of control communication means based on USB Type-C standards |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105811503B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015136148A1 (en) * | 2014-03-13 | 2015-09-17 | Nokia Technologies Oy | Method, apparatus, and computer program product for entering accessory docking mode in usb type c |
| CN105045738A (en) * | 2014-03-24 | 2015-11-11 | 诺基亚技术有限公司 | Method and device for connecting USB type-c devices |
-
2016
- 2016-03-23 CN CN201610168504.3A patent/CN105811503B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015136148A1 (en) * | 2014-03-13 | 2015-09-17 | Nokia Technologies Oy | Method, apparatus, and computer program product for entering accessory docking mode in usb type c |
| CN105045738A (en) * | 2014-03-24 | 2015-11-11 | 诺基亚技术有限公司 | Method and device for connecting USB type-c devices |
Non-Patent Citations (1)
| Title |
|---|
| USB-Type-C-Specification-Release-1.2;sgrtft;《百度文库》;20151217;第150-166页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105811503A (en) | 2016-07-27 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180831 |