CN101950217A - Touch screen device and power-saving control method thereof - Google Patents
Touch screen device and power-saving control method thereof Download PDFInfo
- Publication number
- CN101950217A CN101950217A CN 201010298202 CN201010298202A CN101950217A CN 101950217 A CN101950217 A CN 101950217A CN 201010298202 CN201010298202 CN 201010298202 CN 201010298202 A CN201010298202 A CN 201010298202A CN 101950217 A CN101950217 A CN 101950217A
- Authority
- CN
- China
- Prior art keywords
- touch
- area
- scanning
- screen
- scanning area
- 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.)
- Granted
Links
Images
Landscapes
- Position Input By Displaying (AREA)
- User Interface Of Digital Computer (AREA)
- Controls And Circuits For Display Device (AREA)
Abstract
The invention discloses a touch screen device, comprising a touch screen, a UI (User Interface) control unit and a scanning control unit. The UI control unit is used for setting an effective touch area according to a user interface and transmitting an area setting signal to the scanning control unit. The scanning control unit is sued for confirming a scanning area corresponding to the effective touch area according to the area setting signal, starting the scanning on the scanning area, and stopping the scanning on the scanning area after a user finishes a touch input operation; and wherein when the touch screen enters another user interface, the UI control unit resets the effective touch area, and the scanning control unit confirms a new scanning area according to the reset effective touch area. The invention further provides a power-saving control method of the touch screen device. The touch screen device and the power-saving control method thereof, provided by the invention, omit the scanning on ineffective user touch area, reduce the power consumption of the touch screen and shorten the scanning time, thereby improving response speed of the touch screen.
Description
Technical field
The present invention relates to a kind of touch panel device and electricity-saving control method thereof.
Background technology
Touch-screens such as the condenser type in the conventional touch screen device, electromagnetic type comprise on the panel the many sweep traces with the matrix form configuration, and mimic channel and digital circuit connect these sweep traces.By obtain the coordinate of user with pen or finger indication, and then definite touch location in full frame scope interscan.So, along with the touch-screen area increase of touch panel device, required sweep trace is just many more, and the power consumption of touch-screen increases accordingly, and growth sweep time makes the response speed of touch-screen descend.
Summary of the invention
In view of this, be necessary to provide a kind of have electricity-saving function and the fast touch panel device of response speed.
In view of this, also be necessary to provide a kind of electricity saving method of touch panel device, to address the above problem.
A kind of touch panel device, it comprises touch-screen, UI (user interface) control module and scan control unit.Described user interface control unit is used for setting effective touch area according to the user interface that shows on the described touch-screen, and sends regional setting signal to described scan control unit.Described scan control unit is used for determining and the corresponding scanning area in described effective touch area according to the described regional setting signal that receives, startup is to the scanning of described scanning area, and stops the scanning to described scanning area after the user finishes touch input operation.Wherein, after described touch-screen enters another user interface, the effective touch area of described user interface control unit weighs new settings, new scanning area is determined according to the effective touch area that resets in described scan control unit.
A kind of electricity-saving control method of touch panel device comprises the steps:
Set effective touch area according to the user interface that shows on the touch-screen;
Determine scanning area according to effective touch area;
Startup is to the scanning of scanning area;
Position, quantity that the detecting user imports in the touch of scanning area, and carry out the corresponding operation of described touch input;
Enter another user interface; And
Set effective touch area once more according to new user interface demonstration.
With respect to prior art, described touching device adopts the UI control module to set effective touch area, determines scanning area by the scan control unit according to effective touch area again, only starts the scanning to the effective scanning zone, and whole touch screen is not scanned.Therefore reduce the power consumption of touch-screen, thereby reduced the response speed that has improved touch-screen sweep time.
Description of drawings
Fig. 1 is the inputting interface synoptic diagram of touch panel device in the first embodiment of the invention.
Fig. 2 is the functional block diagram of touch panel device of the present invention.
Fig. 3 is the inputting interface synoptic diagram of touch panel device in the second embodiment of the invention.
Fig. 4 is the electricity-saving control method flow chart of steps of touch panel device among the present invention.
The main element symbol description
Touch-screen 100
Non-scanning area 102
Touch detecting unit 140
The 3rd scanning area 1013
Embodiment
In the present embodiment, effective touch area that touch panel device sets according to built-in or external UI (user interface) control module, it is the zone that is used on the user interface of screen displaying for user's operation, carry out equal or be slightly larger than the scanning motion of this effective touch area, and according to the user by writing pencil or finger in the touch operation of this effective coverage, carry out corresponding function.In the present embodiment, according to the user interface that shows on the touch-screen, can there be a plurality of effective touch areas simultaneously in touch panel device, and starts the scanning to these a plurality of effective coverages, saves the scanning motion to other non-effective coverage, saves power consumption and sweep time.
Simultaneously, in other embodiment of the present invention, can also be as required number and/or area be set greater than the effective scanning area of touch area at a plurality of effective touch areas, has the overlapping region between those scanning areas, thereby the scanning times of the unit interval of overlapping areas has increased on these a plurality of scanning areas, has reduced the response speed that touch operation is leaked the probability and then the raising touch-screen of detecting.For example, can be set to the overlapping region of a plurality of scanning areas to the handwriting recognition zone on the touch-screen or the high zone of frequency of utilization, to increase the scanning times of those overlapping regions unit interval.
Please consult Fig. 1 and Fig. 2 simultaneously, it is respectively the inputting interface synoptic diagram and the functional block diagram of the touch panel device 10 of first embodiment of the present invention.Touch panel device 10 comprises touch-screen 100, UI (user interface) control module 120, scan control unit 130.Wherein, touch-screen 100 comprises two zones: scanning area 101 and non-scanning area 102.
Please consult Fig. 2 simultaneously, shown on the touch-screen 100 that ACK button such as OK, QUIT are for user's operation.These ACK button regions all are confirmed as scanning area 101.In the present embodiment, the number and the zone of ACK button such as the number of scanning area 101 and OK, QUIT or other effective touch area are corresponding.Scan control unit 130 starts the scanning to each scanning area 101 in certain sequence, so that discern the touch input operation of user on this scanning area 101.
On the touch-screen 100 except that showing that ACK button such as OK, QUIT are operated for the user, there is not other zone for user's operation, therefore, other zone except that the scanning area 101 at ACK button places such as OK, QUIT is non-scanning area 102, and scan control unit 130 can not start the scanning to non-scanning area 102.
Touch detecting unit 140 and be used to detect the touch input position of user, and send the touch signal that detects to UI control module 120 in scanning area 101.Touch detecting unit 140 and be used to also detect whether the user finishes touch input operation or whether touch-screen 100 enters another user interface, and will detect the result and send scan control unit 130 to.
When using above-mentioned touch panel device 10, effective touch area that scan control unit 130 is set according to UI control module 120 determines scanning area 101 and starts scanning to scanning area 101, and need not whole touch screen 100 is scanned.Therefore reduced the power consumption of touch-screen 100, thereby reduced the response speed that has improved touch-screen 100 sweep time, made when the user imports, touch panel device 10 can be made response faster and carry out function corresponding.
See also Fig. 2 and Fig. 3, it is respectively the functional block diagram and the inputting interface synoptic diagram of the touch panel device 10 of second embodiment of the present invention.Touch panel device 10 differences of the present embodiment and first embodiment are: except that having shown that ACK button such as OK, QUIT are operated for the user, comprise that also a hand-written input area 110 carries out handwriting input for the user on the touch-screen 100.Detecting precision for the zone of improving this handwriting input zone 110 and ACK button correspondences such as OK, QUIT, after the zone that receives this handwriting input zone 110 that UI control module 120 is set to and ACK button correspondences such as OK, QUIT in scan control unit 130 was effective touch area, the scanning areas 101 that scan control unit 130 is determined comprised first scanning area 1011, second scanning area 1012 and the 3rd scanning area 1013.Wherein, first scanning area 1011 comprises effective touch area corresponding with OK key and QUIT key viewing area on the touch-screen 100, second scanning area 1012 is the effective touch area corresponding with handwriting input zone 110, and 1013 of the 3rd scanning areas have comprised first scanning area 1011 and second scanning area 1012.
When using above-mentioned touch panel device 10,130 sequence startings of scan control unit are to first scanning area 1011 in the scanning area 101, the discontinuity scanning of second scanning area 1012 and the 3rd scanning area 1013, because the 3rd scanning area 1013 comprises first scanning area 1011 and second scanning area 1012, this first scanning area 1011 and the scanning times of second scanning area 1012 in the unit interval have doubled, thereby can improve OK key on the corresponding touch-screen 100, the detecting precision and the reaction velocity in QUIT key viewing area and handwriting input zone 110, reduced the probability that changes the leakage detecting of a little effectively touch areas, thereby improved the response speed of touch-screen 100, make when the user imports that touch panel device 10 can be made response more accurately faster and carry out function corresponding.
In other embodiments, can also be as required at a plurality of scanning areas of number more than effective touch area are set, leaked the probability of detecting to reduce this effective touch area, for example, can two or more scanning areas be set to the high same effective touch area correspondence of frequency of utilization on the touch-screen, these two or more scanning areas all comprise this effective touch area.
See also Fig. 2 and Fig. 4, wherein, it is touch panel device electricity-saving control method flow chart of steps of the present invention for Fig. 4, comprises the steps:
Step S301, UI control module 120 is set effective touch area according to the user interface that touch-screen 100 shows, and sends regional setting signal to scan control unit 130.This effective touch area is for the zone of user's operation, as the zone of the ACK button such as OK, QUIT that show on touch-screen 100 user interfaces on the user interface that shows of touch-screen 100.This zone setting signal comprises relevant informations such as the number of this effective touch area and particular location thereof.
Step S303, scan control unit 130 receives the regional setting signal of UI control module 120, and according to after the definite scanning area 101 corresponding with described effective touch area of this zone setting signal, starts the discontinuity scanning to scanning area 101.Is effective touch area when determining scanning area 101 in scan control unit 130 according to this zone setting signal, scanning area 101 can be set to overlap with described effective touch area or contain and greater than this effective touch area; Can be provided with and the same number of scanning area 101 that contains this effective touch area in effective touch area, can also two or more scanning areas 101 be set at each effective touch area, and these a plurality of scanning areas 101 are for partly or entirely overlapping and all contain the scanning area 101 of this effective touch area.
Whether step S305, touching detecting unit 140 detecting users has touch input operation in scanning area 101.If not, then return step S303.
Step S307 is if touch position, quantity and associative operation thereof that detecting unit 140 continues this touch input of detecting.
Step S309 touches detecting unit 140 and sends the touch signal that detects to UI control module 120.
Step S311, UI control module 120 judges whether to continue to use touch-screen 100 according to the touch signal that receives.If then return step S301.
Step S313, if not, UI control module 120 shows suitable interface and closes the scanning of the 130 pairs of scanning areas 101 in scan control unit.
When using the electricity-saving control method of above-mentioned touch panel device, effective touch area that scan control unit 130 recognizes according to UI control module 120 determines that scanning area 101 also starts the scanning to scanning area 101, and need not whole touch screen 100 is scanned, therefore reduce the power consumption of touch-screen 100, thereby reduced the response speed that has improved touch-screen 100 sweep time.
Those skilled in the art will be appreciated that; above embodiment only is to be used for illustrating the present invention; and be not to be used as limitation of the invention; as long as within connotation scope of the present invention, appropriate change and variation that above embodiment is done all drop within the scope of protection of present invention.
Claims (10)
1. touch panel device, it comprises touch-screen and scan control unit, it is characterized in that:
Described touch panel device also comprises the user interface control unit, is used for setting effective touch area according to the user interface that shows on the described touch-screen, and sends regional setting signal to described scan control unit; And
Described scan control unit is used for determining and the corresponding scanning area in described effective touch area according to the described regional setting signal that receives, startup is to the scanning of described scanning area, and stops the scanning to described scanning area after the user finishes touch input operation;
Wherein, after described touch-screen enters another user interface, the effective touch area of described user interface control unit weighs new settings, new scanning area is determined according to the effective touch area that resets in described scan control unit.
2. touch panel device as claimed in claim 1, it is characterized in that, comprise that also one touches detecting unit, be used to detect the touch input operation of user, and export all touch informations to described scan control unit effective touch area of providing on the described touch-screen user interface.
3. touch panel device as claimed in claim 1 is characterized in that, described effective touch area is the zone of operating for the user on the described touch-screen user interface, and described regional setting signal comprises the number and the more specific location information thereof of described effective touch area.
4. touch panel device as claimed in claim 3 is characterized in that, described touch-screen comprises scanning area and non-scanning area, and described scanning area overlaps with described effective touch area.
5. touch panel device as claimed in claim 3 is characterized in that, described touch-screen also comprises the non-scanning area except that described scanning area, and described scanning area contains described effective touch area; At least two partly overlapping at least scanning areas of described touch-screen setting.
6. the electricity-saving control method of a touch panel device comprises the steps:
Set effective touch area according to the user interface that shows on the touch-screen;
Determine scanning area according to effective touch area;
Startup is to the scanning of scanning area;
Position, quantity that the detecting user imports in the touch of scanning area, and carry out the corresponding operation of described touch input;
Enter another user interface; And
Set effective touch area once more according to new user interface demonstration.
7. the electricity-saving control method of touch panel device as claimed in claim 6 is characterized in that, also comprises the steps:
After the detecting touch input operation is finished or touch-screen enters another user interface, stop scanning to scanning area.
8. the electricity-saving control method of touch panel device as claimed in claim 6 is characterized in that, described effective touch area is the zone of operating for the user on the described touch-screen user interface.
9. the electricity-saving control method of touch panel device as claimed in claim 6 is characterized in that, described touch-screen also comprises the non-scanning area except that scanning area, and described scanning area overlaps with described effective touch area.
10. the electricity-saving control method of touch panel device as claimed in claim 6 is characterized in that, described touch-screen also comprises the non-scanning area except that scanning area, and described scanning area contains described effective touch area; At least two partly overlapping at least scanning areas of described touch-screen setting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010298202 CN101950217B (en) | 2010-09-30 | 2010-09-30 | Touch screen device and power-saving control method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010298202 CN101950217B (en) | 2010-09-30 | 2010-09-30 | Touch screen device and power-saving control method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101950217A true CN101950217A (en) | 2011-01-19 |
| CN101950217B CN101950217B (en) | 2013-03-20 |
Family
ID=43453727
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010298202 Expired - Fee Related CN101950217B (en) | 2010-09-30 | 2010-09-30 | Touch screen device and power-saving control method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101950217B (en) |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102880332A (en) * | 2011-07-13 | 2013-01-16 | 仁宝电脑工业股份有限公司 | Local control method and system of touch panel |
| CN102915137A (en) * | 2011-08-05 | 2013-02-06 | 宏碁股份有限公司 | Power saving method and touch control display device |
| CN103425335A (en) * | 2012-05-24 | 2013-12-04 | 宏达国际电子股份有限公司 | Method for controlling volume of electronic device and electronic device using the same |
| CN104102386A (en) * | 2014-07-30 | 2014-10-15 | 山东胜开电子科技有限公司 | Application-based touch screen scanning method and device and touch screen |
| CN104267841A (en) * | 2014-08-01 | 2015-01-07 | Tcl通讯（宁波）有限公司 | Input control method and input control system for touch screen of mobile terminal |
| CN104795042A (en) * | 2015-05-08 | 2015-07-22 | 厦门天马微电子有限公司 | Touch control driving method, system, driving module and display device |
| CN104820569A (en) * | 2015-05-25 | 2015-08-05 | 联想(北京)有限公司 | Input method and electronic device |
| CN106462347A (en) * | 2014-05-22 | 2017-02-22 | 索尼公司 | Selective turning off/dimming of touch screen display region |
| CN106527807A (en) * | 2016-09-22 | 2017-03-22 | 友达光电股份有限公司 | Touch device and touch feedback method |
| CN107765707A (en) * | 2017-10-25 | 2018-03-06 | 深圳慧源创新科技有限公司 | Control the method, apparatus and system of unmanned plane rolling |
| CN107831996A (en) * | 2017-10-11 | 2018-03-23 | 广东欧珀移动通信有限公司 | Recognition of face starts method and Related product |
| CN110007791A (en) * | 2017-11-10 | 2019-07-12 | 夏普株式会社 | Touch panel display device, touch panel control method, recording medium |
| US10692104B2 (en) | 2012-10-30 | 2020-06-23 | Ycs Group, Llc | Managing vendor offers |
| CN113268157A (en) * | 2021-04-22 | 2021-08-17 | 深圳市爱协生科技有限公司 | Touch instruction generation method and device, touch screen and intelligent terminal |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1595436A (en) * | 2003-09-10 | 2005-03-16 | 义隆电子股份有限公司 | Method for reducing consumed power for capacitor type touch screen |
| CN101702106A (en) * | 2009-11-04 | 2010-05-05 | 深圳市汇顶科技有限公司 | Awakening method and system for touch screen terminal |
-
2010
- 2010-09-30 CN CN 201010298202 patent/CN101950217B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1595436A (en) * | 2003-09-10 | 2005-03-16 | 义隆电子股份有限公司 | Method for reducing consumed power for capacitor type touch screen |
| CN101702106A (en) * | 2009-11-04 | 2010-05-05 | 深圳市汇顶科技有限公司 | Awakening method and system for touch screen terminal |
Cited By (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102880332A (en) * | 2011-07-13 | 2013-01-16 | 仁宝电脑工业股份有限公司 | Local control method and system of touch panel |
| CN102915137A (en) * | 2011-08-05 | 2013-02-06 | 宏碁股份有限公司 | Power saving method and touch control display device |
| CN103425335A (en) * | 2012-05-24 | 2013-12-04 | 宏达国际电子股份有限公司 | Method for controlling volume of electronic device and electronic device using the same |
| CN103425335B (en) * | 2012-05-24 | 2017-12-29 | 宏达国际电子股份有限公司 | For controlling the method for electronic installation volume and the electronic installation using this method |
| US9323366B2 (en) | 2012-05-24 | 2016-04-26 | Htc Corporation | Method for controlling volume of electronic device and electronic device using the same |
| US11403661B2 (en) | 2012-10-30 | 2022-08-02 | Your City Sampler, Llc | Managing vendor offers |
| US11798020B2 (en) | 2012-10-30 | 2023-10-24 | Ycs Group, Llc | Managing vendor offers |
| US10692104B2 (en) | 2012-10-30 | 2020-06-23 | Ycs Group, Llc | Managing vendor offers |
| CN106462347A (en) * | 2014-05-22 | 2017-02-22 | 索尼公司 | Selective turning off/dimming of touch screen display region |
| CN106462347B (en) * | 2014-05-22 | 2019-10-22 | 索尼公司 | The method of the display of terminal installation and controlling terminal device |
| CN104102386B (en) * | 2014-07-30 | 2017-09-01 | 山东胜开电子科技有限公司 | Touch screen scanning method, device and touch-screen based on application |
| CN104102386A (en) * | 2014-07-30 | 2014-10-15 | 山东胜开电子科技有限公司 | Application-based touch screen scanning method and device and touch screen |
| CN104267841A (en) * | 2014-08-01 | 2015-01-07 | Tcl通讯（宁波）有限公司 | Input control method and input control system for touch screen of mobile terminal |
| CN104795042A (en) * | 2015-05-08 | 2015-07-22 | 厦门天马微电子有限公司 | Touch control driving method, system, driving module and display device |
| CN104795042B (en) * | 2015-05-08 | 2017-11-21 | 厦门天马微电子有限公司 | A kind of touch-control driving method, system, drive module and display device |
| CN104820569A (en) * | 2015-05-25 | 2015-08-05 | 联想(北京)有限公司 | Input method and electronic device |
| CN106527807A (en) * | 2016-09-22 | 2017-03-22 | 友达光电股份有限公司 | Touch device and touch feedback method |
| CN107831996A (en) * | 2017-10-11 | 2018-03-23 | 广东欧珀移动通信有限公司 | Recognition of face starts method and Related product |
| CN107831996B (en) * | 2017-10-11 | 2021-02-19 | Oppo广东移动通信有限公司 | Face recognition starting method and related product |
| CN107765707A (en) * | 2017-10-25 | 2018-03-06 | 深圳慧源创新科技有限公司 | Control the method, apparatus and system of unmanned plane rolling |
| CN110007791A (en) * | 2017-11-10 | 2019-07-12 | 夏普株式会社 | Touch panel display device, touch panel control method, recording medium |
| CN113268157A (en) * | 2021-04-22 | 2021-08-17 | 深圳市爱协生科技有限公司 | Touch instruction generation method and device, touch screen and intelligent terminal |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101950217B (en) | 2013-03-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101950217B (en) | Touch screen device and power-saving control method thereof | |
| AU2018282404B2 (en) | Touch-sensitive button | |
| CN105760019B (en) | Touch operation method and system based on interactive electronic whiteboard | |
| KR101812004B1 (en) | System and method for context-based touch processing | |
| CN102880332A (en) | Local control method and system of touch panel | |
| TWI428800B (en) | Touch screen apparatus and power saving method therof | |
| TWI505155B (en) | Touch-control method for capactive and electromagnetic dual-mode touch screen and handheld electronic device | |
| CN103793099A (en) | Touch sensing system and method of reducing latency thereof | |
| CN103218044A (en) | Physical feedback-based touch device and touch treatment method thereof | |
| CN106227449A (en) | Input control method based on sense of touch vision technique and system | |
| US20140015783A1 (en) | Method and apparatus for detecting an attachable/detachable pen | |
| CN105094487A (en) | Touch screen and control method and control device thereof and touch display device | |
| CN103941919A (en) | Touch event identification mode | |
| CN104281318A (en) | Method and apparatus to reduce display lag of soft keyboard presses | |
| CN103150111A (en) | Symbol inputting method, device and terminal | |
| KR20140130798A (en) | Apparatus and method for touch screen panel display and touch key | |
| CN203178955U (en) | Touch screen scanning device | |
| US10521108B2 (en) | Electronic apparatus for detecting touch, method of controlling the same, and display apparatus including touch controller | |
| CN105892918A (en) | Mobile terminal with touch screen and control method of mobile terminal | |
| CN110597405A (en) | Touch control identification method | |
| KR101903415B1 (en) | Display device with touch screen and method for driving the same | |
| CN104932755B (en) | Input system and its operating method | |
| CN205193752U (en) | Touch terminal | |
| CN105653104A (en) | Touch control display device and touch control point detection method | |
| JP2014203204A (en) | Scanning type touch panel device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20151210 Address after: 526000 Linjiang Industrial Park, hi tech Zone, Guangdong, Zhaoqing Patentee after: ZHAOQING RSB ELECTRONIC SCIENCE AND TECHNOLOGY INDUSTRIAL CO., LTD. Address before: 518109 Guangdong city of Shenzhen province Baoan District Longhua Town Industrial Zone tabulaeformis tenth East Ring Road No. 2 two Patentee before: Hongfujin Precise Industry (Shenzhen) Co., Ltd. Patentee before: Hon Hai Precision Industry Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130320 Termination date: 20160930 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |