WO2023061358A1

WO2023061358A1 - Cache method and apparatus, and electronic device

Info

Publication number: WO2023061358A1
Application number: PCT/CN2022/124609
Authority: WO
Inventors: 姚利军
Original assignee: 维沃移动通信有限公司
Priority date: 2021-10-15
Filing date: 2022-10-11
Publication date: 2023-04-20
Also published as: CN113938551B; CN113938551A

Abstract

Disclosed in the present application are a cache method and apparatus, and an electronic device. The method comprises: acquiring user travel information; when the user travel information indicates that a user travels within a preset time period, displaying a cache reminder interface, wherein the cache reminder interface comprises cache setting controls corresponding to at least one application program identifier; receiving a first input for a target cache setting control among the cache setting controls; and caching target multimedia data in response to the first input.

Description

Caching method, device and electronic device

Cross References to Related Applications

This application claims priority to Chinese Patent Application No. 202111201729.1 filed in China on October 15, 2021, the entire contents of which are hereby incorporated by reference.

technical field

The present application belongs to the technical field of communication, and in particular relates to a caching method, device and electronic equipment.

Background technique

With the rapid development of smart terminals and networks, more and more users will use smart terminals to watch videos. In some scenarios, such as business trips, users usually manually cache and download videos so that they can still watch videos when there is no network. However, there may be situations where the user forgets to cache the video in advance, resulting in the inability to watch the cached video.

Contents of the invention

The purpose of the embodiments of the present application is to provide a caching method, device and electronic equipment, which can solve the problem of how to prevent users from forgetting to cache videos in advance.

In the first aspect, the embodiment of the present application provides a caching method, including:

Obtain user travel information;

When the user travel information indicates that the user travels within a preset time period, a cache reminder interface is displayed, and the cache reminder interface includes at least one cache setting control corresponding to the application identifier;

receiving a first input to a target cache setting control in the cache setting controls;

In response to the first input, target multimedia data is cached.

In a second aspect, the embodiment of the present application provides a caching device, including:

The first obtaining module is used to obtain user travel information;

The first display module is used to display a cache reminder interface when the user travel information indicates that the user travels within a preset time period, and the cache reminder interface includes at least one cache setting control corresponding to the application identification;

A first receiving module, configured to receive a first input to the target cache setting control in the cache setting control;

A first processing module, configured to cache target multimedia data in response to the first input.

In a third aspect, an embodiment of the present application provides an electronic device, the electronic device includes a processor, a memory, and a program or instruction stored in the memory and operable on the processor, and the program or instruction is The processor implements the steps of the method described in the first aspect when executed.

In a fourth aspect, an embodiment of the present application provides a readable storage medium, on which a program or an instruction is stored, and when the program or instruction is executed by a processor, the steps of the method described in the first aspect are implemented .

In the fifth aspect, the embodiment of the present application provides a chip, the chip includes a processor and a communication interface, the communication interface is coupled to the processor, and the processor is used to run programs or instructions, so as to implement the first aspect The steps of the method.

In a sixth aspect, an embodiment of the present application provides a computer program product, the program product is stored in a non-volatile storage medium, and the program product is executed by at least one processor to implement the computer program product described in the first aspect. method steps.

In a seventh aspect, the embodiment of the present application provides another electronic device configured to execute the method described in the first aspect.

In the embodiment of the present application, user travel information is acquired; when the user travel information indicates that the user travels within a preset time period, a cache reminder interface is displayed; One input; cache the target multimedia data in response to the first input, so that the user can effectively prevent the user from forgetting to cache the video before traveling, and the operation is simple.

Description of drawings

FIG. 1 is a schematic flow diagram of a caching method in an embodiment of the present application;

FIG. 2 is a schematic display of the first interface in the embodiment of the present application;

FIG. 3 is a schematic display of a cache reminder interface in an embodiment of the present application;

FIG. 4 is a schematic display of a cache task-related setting interface in an embodiment of the present application;

Fig. 5 is one of the display schematic diagrams of the cache details setting interface in the embodiment of the present application;

FIG. 6 is the second schematic view of the cache details setting interface in the embodiment of the present application;

Fig. 7 is a schematic diagram of displaying travel short messages in the embodiment of the present application.

FIG. 8 is a schematic diagram of modules of a cache device according to an embodiment of the present application;

Fig. 9 is one of the structural block diagrams of the electronic device according to the embodiment of the present invention;

FIG. 10 is the second structural block diagram of the electronic device according to the embodiment of the present invention.

Detailed ways

The following will clearly describe the technical solutions in the embodiments of the present application with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, but not all of them. All other embodiments obtained by persons of ordinary skill in the art based on the embodiments in this application belong to the protection scope of this application.

The terms "first", "second" and the like in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific sequence or sequence. It should be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments of the application can be practiced in sequences other than those illustrated or described herein, and that references to "first," "second," etc. distinguish Objects are generally of one type, and the number of objects is not limited. For example, there may be one or more first objects. In addition, "and/or" in the specification and claims means at least one of the connected objects, and the character "/" generally means that the related objects are an "or" relationship.

The caching method provided by the embodiment of the present application will be described in detail below through specific embodiments and application scenarios with reference to the accompanying drawings.

As shown in Figure 1, the embodiment of the present application provides a caching method, including:

Step 101: Obtain user travel information.

In the embodiment of the present application, the user's travel information can be obtained through travel text messages or schedule information.

Optionally, in the embodiment of the present application, before the above step 101, further include:

As shown in Figure 2, the first interface is displayed. The first interface is used to prompt the user whether to enable the travel automatic caching function. If the user chooses to enable it, the user needs to authorize a series of mobile phone permissions related to this function, such as location, SMS , schedule, video applications, notifications, network, storage, etc. read and write permissions, if the user does not choose to open, no operation will be performed.

Step 102: When the user travel information indicates that the user travels within a preset time period, display a cache reminder interface, where the cache reminder interface includes at least one cache setting control corresponding to the application identifier.

For example, if the above-mentioned user travel information indicates that the user has a travel plan in the next n hours (such as 24 hours, the n value can be dynamically adjusted), the cache reminder interface is displayed, as shown in Figure 3. The cache reminder interface can be specified It is a video cache reminder interface, which includes a cache setting control corresponding to the first video APP application identification, a cache setting control corresponding to the second video APP application identification, and a cache setting corresponding to the third video APP application identification controls. Wherein, the cache setting control corresponding to each application identification includes a selection setting control and a detail setting control. The selection setting control is used to select whether to cache the video corresponding to the application ID, and the detail setting control is used to set the caching of the video content corresponding to the application ID.

Step 103: Receive a first input to the target cache setting control in the cache setting control.

As shown in FIG. 3 , the user selects the videos corresponding to the above three video application identifiers for caching. For example, the user respectively clicks the selection setting control and the detail setting control corresponding to the three application identifiers.

Optionally, the cache reminder interface also includes more setting controls. After the user clicks more setting controls, it will jump to the cache task-related setting interface. This interface can set the total number of cached videos, the total size of the cache, and support network status, default cached video applications, etc., as shown in Figure 4.

Step 104: Buffer target multimedia data in response to the first input.

Here, the target multimedia data includes at least one of target video data, target audio data, target text (such as novels), and target image data (such as comics).

Specifically, the above-mentioned target multimedia data is the pre-cached multimedia data recommended by the electronic device for the user, or it may be the multimedia data determined according to the user's historical viewing information, or it may be the multimedia data selected by the user.

In the embodiment of the present application, user travel information is obtained; when the user travel information indicates that the user travels within a preset time period, a cache reminder interface is displayed; Input: cache the target multimedia data in response to the first input, so that the user can effectively prevent the user from forgetting to cache the video before traveling, and the operation is simple.

Optionally, in response to the first input, caching the target multimedia data includes:

In response to the first input, display a cache details setting interface corresponding to the target cache setting control, the cache details setting interface includes a cache details setting control, and the cache details setting control is used to set the target parameters of the target multimedia data set up;

receiving a second input to the cache details setting control;

In response to the second input, the target multimedia data is cached.

In the embodiment of the present application, as shown in Figures 5 and 6, after the user clicks the detail setting control, a cache detail setting interface will be displayed, the cache detail setting interface includes a cache detail setting control, and the cache detail setting control is used to set the target multimedia data. The target parameters are set, and the target parameters include the number of episodes of target multimedia data, the type (tv series, movie) of target multimedia data, the title of target multimedia data (such as TV play title, movie title) or the number of short videos.

The above-mentioned target multimedia data may be obtained according to the historical viewing information of the user, or may be randomly recommended multimedia data for the user. In addition, the user may also select the above-mentioned target multimedia data through a custom setting control to replace the multimedia data randomly recommended for the user.

Through the cache details setting interface, the user can conveniently and quickly set the relevant information of the multimedia data to be cached.

Optionally, in the embodiment of the present application, before the cache target multimedia data, it also includes:

Obtain historical viewing information corresponding to the target application program, where the target application program is an application program corresponding to the target application program identification;

Determine target multimedia data according to the historical viewing information.

Wherein, the historical video viewing information includes at least one of the following:

application identification;

watch time;

number of visits;

play content;

playback progress;

play category.

For example, in a specific embodiment of the present application, when it is detected that the user uses a video app, the behavior data of the user when using the app is collected. The behavior data includes but is not limited to the name of the video app used by the user, the duration of use, The number of visits, the content of the current video, the playback progress, the category of the video, whether it is a short video, TV series, movie, and recent viewing history, etc. And record these data to get the behavior portrait of the user's video watching. For example, within a certain period of time, the user's video portrait data is as follows: 8 times of using the No. 1 Video APP, with a total usage time of 12 hours, and the latest episode 7 of the No. 1 TV series. Use the Second Video APP 5 times, with a total duration of 5 hours. The most recent playback history is the second episode of the Second TV series. Use the short video APP 20 times, with a total usage time of 8 hours. In this way, based on the behavior profile of the user's video viewing, the historical video viewing information corresponding to the target video application can be obtained, so as to subsequently recommend target video data that meets the user's needs for the user based on this.

Optionally, the acquiring user travel information includes:

Obtain user travel information through travel text messages or schedule information.

In the specific embodiment of the present application, when ordering a train ticket or an air ticket, there will generally be a short message notification. After the user receives the short message, the timing program in the background can judge whether the short message is a travel short message by comparing the current number with the preset number database and matching the characteristic words. If it is confirmed that the short message is a travel short message, the time information in the content of the short message is obtained through technologies such as regular matching and word segmentation. General travel booking SMS will contain time information, such as "xxxxx year xx month xx day" or "xx month xx day" or "xx:xx" and other time format data. According to the acquired time data, we compare the time with the current time. If the time interval between the two times is less than or equal to n hours, it is determined that the user travels within the preset time period, and then triggers the cache reminder interface to be displayed. If the time interval is greater than n hours, wait for the detection of the scheduled task in the next cycle (the detection cycle is also configurable, and the detection is performed once a day by default), until the preset time condition is met.

In addition, we can also obtain it through the schedule information, and we can detect the user's schedule in the next n hours. If the schedule details include information such as train numbers, flights, and time, it can also be determined that the user is about to travel.

For example, as shown in Figure 7, when we receive a text message, the background timing task identifies the text message as a travel text message through keywords such as "12306" and "ticket gate". Then, by regular matching, we can extract the time information "September 18, 09:56" from the SMS content. At this point, you can judge whether to trigger the automatic video caching function by comparing with the current time.

Optionally, in this embodiment of the application, when the caching task is completed, the user is prompted that the automatic video caching task has been completed, and the specific details of the caching are prompted: such as the name and number of episodes of the cached TV series; the name of the movie; the number of short videos, etc. information.

The caching method in the embodiment of the present application can automatically cache videos for the user before traveling based on the user's video watching behavior profile. After this function is turned on, the program will regularly detect whether the user is in the state of imminent travel, and when in the state of imminent travel, according to the user's viewing history data, the user will be intelligently provided with cached data, thereby reducing the chance of the user forgetting to cache the video before departure Situation happens.

Optionally, in the embodiment of the present application, when the user travel information indicates that the user travels within a preset time period, the target multimedia data can also be directly cached. Cache target multimedia data.

It should be noted that, the caching method provided in the embodiment of the present application may be executed by a caching device, or a control module in the caching device for executing the caching method. In the embodiment of the present application, the caching device executed by the caching device is taken as an example to describe the caching device provided in the embodiment of the present application.

As shown in FIG. 8, the embodiment of the present application also provides a caching device 800, including:

The first obtaining module 801 is used to obtain user travel information;

The first display module 802 is configured to display a cache reminder interface when the user travel information indicates that the user travels within a preset time period, and the cache reminder interface includes at least one cache setting control corresponding to the application identifier;

The first receiving module 803 is configured to receive a first input to the target cache setting control in the cache setting control;

The first processing module 804 is configured to cache target multimedia data in response to the first input.

Optionally, the first processing module includes:

The first display submodule is configured to display a cache detail setting interface corresponding to the target cache setting control in response to the first input, the cache detail setting interface includes a cache detail setting control, and the cache detail setting control is used for Setting the target parameters of the target multimedia data;

The first receiving submodule is used to receive the second input of the cache detail setting control;

The first caching submodule is configured to cache the target multimedia data in response to the second input.

Optionally, the device of the embodiment of the present application further includes:

The second obtaining module is used to obtain historical video viewing information corresponding to the target application program before the first processing module caches the target multimedia data, and the target application program is an application program corresponding to the target application program identification;

The first determining module is configured to determine target multimedia data according to the historical viewing information.

Optionally, the viewing history information includes at least one of the following:

application identification;

watch time;

number of visits;

play content;

playback progress;

play category.

Optionally, the first acquiring module is configured to acquire travel information of the user through a travel short message or schedule information.

The device in the embodiment of the present application acquires travel information of the user; when the travel information of the user indicates that the user travels within a preset time period, displays a cache reminder interface; receives the first request for the target cache setting control in the cache setting control One input; cache the target multimedia data in response to the first input, so that the user can effectively prevent the user from forgetting to cache the video before traveling, and the operation is simple.

The cache device in this embodiment of the present application may be a device, or may be a component, an integrated circuit, or a chip in a terminal. The device may be a mobile electronic device or a non-mobile electronic device. Exemplarily, the mobile electronic device may be a mobile phone, a tablet computer, a notebook computer, a handheld computer, a vehicle electronic device, a wearable device, an ultra-mobile personal computer (ultra-mobile personal computer, UMPC), a netbook or a personal digital assistant (personal digital assistant). assistant, PDA), etc., non-mobile electronic devices can be servers, network attached storage (Network Attached Storage, NAS), personal computer (personal computer, PC), television (television, TV), teller machine or self-service machine, etc., this application Examples are not specifically limited.

The caching device in this embodiment of the present application may be a device with an operating system. The operating system may be an Android (Android) operating system, an iOS operating system, or other possible operating systems, which are not specifically limited in this embodiment of the present application.

The caching device provided by the embodiment of the present application can implement the various processes realized by the method embodiments in Fig. 1 to Fig. 7 , and in order to avoid repetition, details are not repeated here

Optionally, as shown in FIG. 9 , the embodiment of the present application further provides an electronic device 900, including a processor 901, a memory 902, and programs or instructions stored in the memory 902 and operable on the processor 901, When the program or instruction is executed by the processor 901, each process of the above-mentioned cache method embodiment can be realized, and the same technical effect can be achieved. To avoid repetition, details are not repeated here.

It should be noted that the electronic devices in the embodiments of the present application include the above-mentioned mobile electronic devices and non-mobile electronic devices.

FIG. 10 is a schematic diagram of a hardware structure of an electronic device implementing an embodiment of the present application.

The electronic device 1000 includes, but is not limited to: a radio frequency unit 1001, a network module 1002, an audio output unit 1003, an input unit 1004, a sensor 1005, a display unit 1006, a user input unit 1007, an interface unit 1008, a memory 1009, and a processor 1010, etc. part.

Those skilled in the art can understand that the electronic device 1000 can also include a power supply (such as a battery) for supplying power to various components, and the power supply can be logically connected to the processor 1010 through the power management system, so that the management of charging, discharging, and function can be realized through the power management system. Consumption management and other functions. The structure of the electronic device shown in FIG. 10 does not constitute a limitation to the electronic device. The electronic device may include more or fewer components than shown in the figure, or combine certain components, or arrange different components, and details will not be repeated here. .

The processor 1010 is configured to obtain travel information of the user; when the travel information of the user indicates that the user travels within a preset time period, display a cache reminder interface through the display unit 1006, and the cache reminder interface includes at least one application The program identifies the corresponding cache setting control; the user input unit 1007 is configured to receive a first input to the target cache setting control in the cache setting control; the processor 1010 is configured to cache the target in response to the first input multimedia data.

Optionally, the processor 1010 is configured to, in response to the first input, display a cache detail setting interface corresponding to the target cache setting control through the display unit 1006, the cache detail setting interface including a cache detail setting control, The cache details setting control is used to set the target parameters of the target multimedia data; the user input unit 1007 is used to receive the second input to the cache details setting control; the processor 1010 is used to respond to the The second input is to cache the target multimedia data.

Optionally, before the processor 1010 caches the target multimedia data, it is also used to obtain historical viewing information corresponding to the target application program, the target application program identifies the corresponding application program for the target application program; according to the historical viewing information, Target multimedia data is determined.

application identification;

watch time;

number of visits;

play content;

playback progress;

play category.

Optionally, the processor 1010 is configured to obtain travel information of the user through a travel short message or schedule information.

The electronic device in the embodiment of the present application acquires user travel information; when the user travel information indicates that the user travels within a preset time period, displays a cache reminder interface; receives the target cache setting control in the cache setting control. The first input: in response to the first input, cache the target multimedia data. In this way, it can effectively prevent the user from forgetting to cache the video before travelling, and the operation is simple.

It should be understood that, in the embodiment of the present application, the input unit 1004 may include a graphics processor (Graphics Processing Unit, GPU) 10041 and a microphone 10042, and the graphics processor 10041 is used for the image capture device ( Such as the image data of the still picture or video obtained by the camera) for processing. The display unit 1006 may include a display panel 10061, and the display panel 10061 may be configured in the form of a liquid crystal display, an organic light emitting diode, or the like. The user input unit 1007 includes a touch panel 10071 and other input devices 10072 . The touch panel 10071 is also called a touch screen. The touch panel 10071 may include two parts, a touch detection device and a touch controller. Other input devices 10072 may include, but are not limited to, physical keyboards, function keys (such as volume control buttons, switch buttons, etc.), trackballs, mice, and joysticks, which will not be repeated here. The memory 1009 can be used to store software programs as well as various data, including but not limited to application programs and operating systems. Processor 1010 may integrate an application processor and a modem processor, wherein the application processor mainly processes operating systems, user interfaces, and application programs, and the modem processor mainly processes wireless communications. It can be understood that the foregoing modem processor may not be integrated into the processor 1010 .

The embodiment of the present application also provides a readable storage medium, the readable storage medium stores a program or an instruction, and when the program or instruction is executed by a processor, each process of the above-mentioned cache method embodiment is realized, and can achieve the same Technical effects, in order to avoid repetition, will not be repeated here.

Wherein, the processor is the processor in the electronic device described in the above embodiments. The readable storage medium includes computer readable storage medium, such as computer read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disk or optical disk, etc.

The embodiment of the present application further provides a chip, the chip includes a processor and a communication interface, the communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement each of the above cache method embodiments process, and can achieve the same technical effect, in order to avoid repetition, it will not be repeated here.

It should be understood that the chips mentioned in the embodiments of the present application may also be called system-on-chip, system-on-chip, system-on-a-chip, or system-on-a-chip.

The embodiment of the present application also provides another electronic device, which is configured to execute the processes of the foregoing caching method embodiments, and can achieve the same technical effect. To avoid repetition, details are not repeated here.

It should be noted that, in this document, the term "comprising", "comprising" or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article or apparatus comprising a set of elements includes not only those elements, It also includes other elements not expressly listed, or elements inherent in the process, method, article, or device. Without further limitations, an element defined by the phrase "comprising a ..." does not preclude the presence of additional identical elements in the process, method, article, or apparatus comprising that element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved. Functions are performed, for example, the described methods may be performed in an order different from that described, and various steps may also be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

Through the description of the above embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus a necessary general-purpose hardware platform, and of course also by hardware, but in many cases the former is better implementation. Based on such an understanding, the technical solution of the present application can be embodied in the form of computer software products, which are stored in a storage medium (such as ROM/RAM, magnetic disk, etc.) , optical disc), including several instructions to enable a terminal (which may be a mobile phone, computer, server, or network device, etc.) to execute the methods described in various embodiments of the present application.

The embodiments of the present application have been described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementations. The above-mentioned specific implementations are only illustrative and not restrictive. Those of ordinary skill in the art will Under the inspiration of this application, without departing from the purpose of this application and the scope of protection of the claims, many forms can also be made, all of which belong to the protection of this application.

Claims

A caching method comprising:

Obtain user travel information;

When the user travel information indicates that the user travels within a preset time period, a cache reminder interface is displayed, and the cache reminder interface includes at least one cache setting control corresponding to the application identifier;

receiving a first input to a target cache setting control in the cache setting controls;

In response to the first input, target multimedia data is cached.
The method of claim 1, wherein in response to the first input, buffering target multimedia data comprises:

In response to the first input, display a cache details setting interface corresponding to the target cache setting control, the cache details setting interface includes a cache details setting control, and the cache details setting control is used to set the target parameters of the target multimedia data set up;

receiving a second input to the cache details setting control;

In response to the second input, the target multimedia data is cached.
The method according to claim 1 or 2, wherein, before the cache target multimedia data, further comprising:

Obtain historical viewing information corresponding to the target application program, where the target application program is an application program corresponding to the target application program identification;

Determine target multimedia data according to the historical viewing information.
The method according to claim 3, wherein the historical viewing information includes at least one of the following:

application identification;

watch time;

number of visits;

play content;

playback progress;

play category.
The method according to claim 1, wherein said acquiring user travel information comprises:

Obtain user travel information through travel text messages or schedule information.
A cache device, comprising:

The first obtaining module is used to obtain user travel information;

The first display module is configured to display a cache reminder interface when the user travel information indicates that the user travels within a preset time period, and the cache reminder interface includes at least one cache setting control corresponding to the application identifier;

A first receiving module, configured to receive a first input to the target cache setting control in the cache setting control;

A first processing module, configured to cache target multimedia data in response to the first input.
The device according to claim 6, wherein the first processing module comprises:

The first display submodule is configured to display a cache detail setting interface corresponding to the target cache setting control in response to the first input, the cache detail setting interface includes a cache detail setting control, and the cache detail setting control is used for Setting the target parameters of the target multimedia data;

The first receiving submodule is used to receive the second input of the cache detail setting control;

The first caching submodule is configured to cache the target multimedia data in response to the second input.
The device according to claim 6 or 7, further comprising:

The second obtaining module is used to obtain the historical viewing information corresponding to the target application program before the first processing module caches the target multimedia data, and the target application program is an application program corresponding to the target application program identification;

The first determining module is configured to determine target multimedia data according to the historical viewing information.
The device according to claim 8, wherein the historical viewing information includes at least one of the following:

application identification;

watch time;

number of visits;

play content;

playback progress;

play category.
The device according to claim 6, wherein the first obtaining module is used to obtain travel information of the user through travel short messages or schedule information.
An electronic device, comprising a processor, a memory, and a program or instruction stored on the memory and operable on the processor, when the program or instruction is executed by the processor, claims 1 to 5 are realized The steps of any one of the caching methods.
A readable storage medium storing programs or instructions on the readable storage medium, and implementing the steps of the caching method according to any one of claims 1 to 5 when the programs or instructions are executed by a processor.
A chip includes a processor and a communication interface, the communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement the steps of the caching method according to any one of claims 1 to 5.
A computer program product, the program product is stored in a non-volatile storage medium, and the program product is executed by at least one processor to implement the steps of the caching method according to any one of claims 1 to 5.
An electronic device configured to execute the caching method according to any one of claims 1 to 5.