Dot matrix screen control method and device, electronic equipment and storage medium

Abstract

The invention discloses a lattice screen control method and device, electronic equipment and a storage medium, and the method comprises the steps: analyzing to-be-played audio data, and obtaining a plurality of first amplitudes of the analyzed audio data with a first preset duration as a period; determining a corresponding preset light effect animation based on the first amplitude; and when the audio data is played, controlling a lattice screen to sequentially display the corresponding preset light effect animations. According to the invention, the music rhythm is associated with the dot matrix animation, so that a relatively complete animation effect is kept while the lamplight special effect rhythms along with the music in real time, and the sensory experience of a human body is enriched.

Description

Technical Field

[0001] The present invention relates to the field of music rhythm technology, and in particular to a dot matrix screen control method, device, electronic equipment and storage medium. Background Art

[0002] As the trend of intelligent, connected, electrified and shared vehicles will have a profound impact on the relationship between people, vehicles and the environment, human-machine interaction design will also become a core element of the development and innovation of intelligent connected vehicles. As user needs continue to increase, more and more functions are integrated into automotive technology. Cars are no longer just a simple means of transportation, but also need to meet users' needs for information, entertainment, office, life and other aspects.

[0003] As a part of car design, the car's exterior interactive technology is establishing an emotional connection with the car owner. At the same time, the car's exterior interactive technology is also a manifestation of intelligence. At present, the car's exterior interactive technology is mainly manifested in the interaction between people and cars, cars and cars, and cars and the environment, and its carriers are mainly the front and rear screens, windows, light projection, LED and other devices of the car. When the user walks in front of the car, the car will greet through the front screen, projected light, window screen, and LED lights, such as projecting text and animation. At the same time, the car's exterior interactive technology can also be used for the car to display its own brand, etc. It can be seen that the car's exterior interactive technology is an important part of realizing the interaction between people, cars, and the environment, and it is of great significance in realizing emotional design.

[0004] There are currently no cars on the market whose external lights can move in real-time with music. Moreover, when traditional lighting rhythmic cars perform the rhythm, the lights only light up or go out, and the continuous on and off jumps themselves have no other meaning and no related timing. One frame of data or after triggering only corresponds to one frame of lighting effect, so the display and promotional effects are relatively limited.

[0005] Therefore, it is necessary to provide an improved technical solution to overcome the above technical problems existing in the prior art. Summary of the invention

[0006] The purpose of the present application is to provide a dot matrix screen control method, device, electronic device and storage medium, which can associate music rhythm with dot matrix animation, while achieving real-time rhythm of light effects with music, retaining a relatively complete animation effect, so as to enrich the human sensory experience.

[0007] To achieve the above objectives:

[0008] In a first aspect, the present invention provides a dot matrix screen control method, comprising:

[0009] Parsing the audio data to be played, and acquiring a plurality of first amplitudes of the parsed audio data with a first preset time length as a period;

[0010] Determine a corresponding preset lighting effect animation based on the first amplitude;

[0011] When the audio data is played, the dot matrix screen is controlled to display the corresponding preset light effect animations in sequence.

[0012] In one embodiment, the acquiring of a plurality of first amplitudes of the audio data with a first preset duration as a period includes:

[0013] Within the first preset time length, obtaining a second amplitude of the audio data with a second preset time length as a period;

[0014] An average value of the second amplitudes is determined as the first amplitude.

[0015] In one embodiment, determining the corresponding preset lighting effect animation based on the first amplitude includes:

[0016] Dividing the expected range of the first amplitude into a plurality of amplitude intervals, and determining a plurality of preset lighting effect animations;

[0017] Based on the corresponding relationship between the preset amplitude range and the preset lighting effect animation, the preset lighting effect animation corresponding to the first amplitude is determined.

[0018] In one embodiment, after acquiring the plurality of first amplitudes of the parsed audio data with the first preset time length as a period, the method further includes:

[0019] When the number of the first amplitudes within the preset amplitude range exceeds a preset number, the to-be-played audio is amplified based on a gain coefficient corresponding to the audio type of the audio data.

[0020] In one embodiment, after acquiring the plurality of first amplitudes of the parsed audio data with the first preset time length as a period, the method further includes:

[0021] Determine a preset timestamp in a corresponding preset lighting effect animation based on the first amplitude;

[0022] When playing the audio data, determining the first amplitude corresponding to the audio data at the current moment with a third preset time length as a period;

[0023] The preset lighting effect animation is played according to the preset timestamp.

[0024] In one embodiment, determining a preset timestamp in a corresponding preset lighting effect animation based on the first amplitude includes:

[0025] Dividing the expected range of the first amplitude into a plurality of amplitude intervals, and determining a plurality of preset timestamps in the preset lighting effect animations;

[0026] Based on the preset correspondence between the amplitude interval and the preset timestamp, a preset timestamp in the preset lighting effect animation corresponding to the first amplitude is determined.

[0027] In one embodiment, after acquiring the plurality of first amplitudes of the parsed audio data with the first preset time length as a period, the method further includes:

[0028] Performing an inverse Fourier transform on the parsed audio data, and obtaining a plurality of target integrals of the restored audio data with a second preset time length as a period;

[0029] Determine a corresponding preset lighting effect animation based on the target score;

[0030] When the audio data is played, the dot matrix screen is controlled to display the corresponding preset light effect animations in sequence.

[0031] In a second aspect, the present application provides a dot matrix screen control device, comprising:

[0032] An analysis module, used for analyzing the audio data to be played, and obtaining a plurality of first amplitudes of the analyzed audio data with a first preset time length as a period;

[0033] An animation determination module, used to determine a corresponding preset lighting effect animation based on the first amplitude;

[0034] The animation display module is used to control the dot matrix screen to display the corresponding preset lighting effect animation in sequence when playing the audio data.

[0035] In one implementation, the parsing module is specifically used to:

[0036] Within the first preset time length, obtaining a second amplitude of the audio data with a second preset time length as a period;

[0037] An average value of the second amplitudes is determined as the first amplitude.

[0038] In one implementation, the animation determination module is specifically used to:

[0039] Dividing the expected range of the first amplitude into a plurality of amplitude intervals, and determining a plurality of preset lighting effect animations;

[0040] Based on the corresponding relationship between the preset amplitude range and the preset lighting effect animation, the preset lighting effect animation corresponding to the first amplitude is determined.

[0041] In a third aspect, the present application provides an electronic device, including:

[0042] processor;

[0043] a memory for storing executable instructions;

[0044] The processor is configured to execute the instructions to implement the dot matrix screen control method as described in the first aspect.

[0045] In a fourth aspect, the present application provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program. When the instructions in the computer-readable storage medium are executed by a processor, the dot matrix screen control method as described in the first aspect is implemented.

[0046] The present application provides a dot matrix screen control method, device, electronic device and storage medium, the method comprising: parsing the audio data to be played, and obtaining multiple first amplitudes of the parsed audio data with a first preset duration as a period; determining the corresponding preset lighting effect animation based on the first amplitude; when playing the audio data, controlling the dot matrix screen to display the corresponding preset lighting effect animation in sequence. The present invention associates the music rhythm with the dot matrix animation, while achieving the real-time rhythm of the lighting effects with the music, retaining a relatively complete animation effect, so as to enrich the sensory experience of the human body. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0048] Figure 1 A schematic diagram of a flow chart of a dot matrix screen control method provided by an embodiment of the present invention;

[0049] Figure 2 A schematic diagram of a dot matrix screen control system provided by an embodiment of the present invention;

[0050] Figure 3 A schematic diagram of the structure of a dot matrix screen control device provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0051] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the present application. Instead, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims.

[0052] It should be noted that, in this article, step codes such as S110, S120, etc. are used for the purpose of expressing the corresponding content more clearly and concisely, and do not constitute a substantial limitation on the sequence. When implementing the step codes, those skilled in the art may execute S120 first and then S110, etc., but these should all be within the scope of protection of this application.

[0053] It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0054] A dot matrix screen control method provided in the embodiment of the present application is shown in FIG. Figure 1 , the method comprising:

[0055] Step S110 , parsing the audio data to be played, and acquiring a plurality of first amplitudes of the parsed audio data with a first preset time length as a period.

[0056] Among them, the audio data includes pre-cached audio data. When parsing the audio data to be played, the music analysis controller will perform preliminary processing on the cached audio, that is, convert the analog signal of the audio data to be played into a digital signal, and then analyze the frequency of the audio to be played through fast Fourier transform, that is, convert the audio to be played from the time domain to the frequency domain, so that multiple frequencies and amplitudes in the audio can be identified and processed, and finally, according to the user's personalized settings or the first preset duration set based on the specific duration of the audio to be played, the first preset duration is set as an interval to obtain multiple first amplitudes of the parsed audio to be played. It should be noted that the entire audio to be played can be divided into several segments at intervals of the first preset duration, and the first amplitude corresponding to each segment of audio can be determined.

[0057] Exemplarily, the duration of the audio data to be played is 100ms, and the first preset duration is 10ms. When obtaining multiple first amplitudes of the parsed audio to be played at intervals of the first preset duration, since one first amplitude corresponds to every 10ms, 10 first amplitudes will be obtained.

[0058] In one embodiment, the acquiring of a plurality of first amplitudes of the audio data with a first preset duration as a period includes:

[0059] Within the first preset time length, a second amplitude of the audio data is acquired with a second preset time length as a period; and an average value of the second amplitude is determined as the first amplitude.

[0060] It can be understood that within the first preset time length, multiple sampling times or sampling periods can be set to sample the audio data to be played multiple times, thereby obtaining multiple second amplitudes. Here, the set sampling times or sampling periods can be adjusted accordingly based on the processing capability of the microcontroller unit (MCU) for data sampling. If the performance of the MCU is strong, the sampling times can be increased, and if the performance is poor, the sampling times can be reduced.

[0061] Furthermore, after obtaining the plurality of second amplitudes, the average value of the plurality of second amplitudes is calculated, and the average value is determined as the first amplitude within the first preset time length. In this way, the calculated first amplitude is used to represent the signal strength or state within the first preset time length, which can reduce the random error of detecting the audio and amplitude, and improve the measurement accuracy of the audio signal.

[0062] In one embodiment, after acquiring the plurality of first amplitudes of the parsed audio data with the first preset time length as a period, the method further includes:

[0063] When the number of the first amplitudes within the preset amplitude range exceeds a preset number, the to-be-played audio is amplified based on a gain coefficient corresponding to the audio type of the audio data.

[0064] It can be understood that after the audio to be played is amplified, the amplitude and frequency of the audio to be played will also change accordingly. In this way, the audio to be played is amplified according to different coverage ranges to ensure that the external lighting effects can still trigger different lighting effect animations when the entire music is relatively flat. For example, when the audio type of the audio to be played is Bluetooth audio, considering that Bluetooth transmission may introduce certain delays and sound quality loss, the gain factor can be set to 1.2 to enhance the clarity and volume of the audio. When the audio type of the audio to be played is local audio, since local audio usually has better sound quality, the gain factor can be kept low and set to 1.0 to ensure the naturalness of the audio and avoid distortion.

[0065] Step S120: determining a corresponding preset lighting effect animation based on the first amplitude.

[0066] Step S130, when playing the audio data, controlling the dot matrix screen to display the corresponding preset light effect animation in sequence.

[0067] In one embodiment, determining the corresponding preset lighting effect animation based on the first amplitude includes:

[0068] The expected range of the first amplitude is divided into a plurality of amplitude intervals, and a plurality of preset lighting effect animations are determined; based on the correspondence between the preset amplitude intervals and the preset lighting effect animations, the preset lighting effect animation corresponding to the first amplitude is determined.

[0069] It can be understood that the value range of the first amplitude is divided into multiple amplitude intervals in advance, and multiple lighting effect animations are prepared, wherein each lighting effect animation corresponds to an amplitude interval. When parsing audio data, the animation duration is used as the parsing duration, and the amplitude data is read at intervals of one animation duration, and the audio assignment is deleted within the same animation duration; when playing audio data, the lighting effect animations of different times are filled on the timeline until the music and lighting effects in the video reach the best state, and this time is used as the time for the later animation.

[0070] Exemplarily, the value range of the first amplitude is divided into 16 amplitude intervals, with values ​​below 28dB being the first amplitude interval and values ​​above 78dB being the sixteenth amplitude interval. The intermediate values ​​can be evenly divided to cover the second to fifteenth amplitude intervals. At the same time, 16 preset lighting effect animations are pre-made and correspond to the 16 amplitude intervals. When the amplitude at time t1 corresponds to the fifth amplitude interval, the external light controller controls the register to light up the lighting effect of the fifth preset lighting effect animation; when the amplitude at time t2 corresponds to the eighth amplitude interval, the external light controller controls the register to light up the lighting effect of the eighth preset lighting effect animation. In this way, audio triggering of lighting effects is achieved, and real-time rhythm of external lighting is realized.

[0071] In one embodiment, after acquiring the plurality of first amplitudes of the parsed audio data with the first preset time length as a period, the method further includes:

[0072] Determine a preset timestamp in the corresponding preset lighting effect animation based on the first amplitude; when playing the audio data, determine the first amplitude corresponding to the audio data at the current moment with a third preset duration as a period; and play the preset lighting effect animation according to the preset timestamp.

[0073] In one embodiment, determining a preset timestamp in a corresponding preset lighting effect animation based on the first amplitude includes:

[0074] The expected range of the first amplitude is divided into multiple amplitude intervals, and preset timestamps in multiple preset lighting effect animations are determined; based on the corresponding relationship between the preset amplitude intervals and the preset timestamps, the preset timestamp in the preset lighting effect animation corresponding to the first amplitude is determined.

[0075] It can be understood that multiple preset timestamps in preset lighting effect animations are pre-set, and a corresponding relationship is established between the divided multiple amplitude intervals and multiple timestamps, where one timestamp corresponds to at least one amplitude interval. Multiple trigger frames are inserted into a lighting effect animation, and when triggered, the lighting effect starts to play from the duration of the triggering start frame. The fewer the number of trigger frames, the longer the duration of the animation played after the trigger, and the more complete the animation effect can be displayed.

[0076] Exemplarily, the maximum amplitude within 100ms is read, and the read amplitude value is used as the trigger frame trigger source. At the beginning, the lighting effect is played from the first frame of the complete lighting effect animation by default; the read amplitude value is used as the trigger frame trigger source, and after triggering, this frame animation is used as the starting animation, and the complete lighting effects are played sequentially; the read amplitude value is used as the trigger frame trigger source, and after triggering, the playback starts with the starting frame animation, interrupting the previously triggered lighting effect animation; after completing the triggering animation, the overall lighting effect is replayed from the starting frame of the complete animation; the maximum amplitude within 100ms is used as the trigger source. If the actual effect is faster, multiple read values ​​can be discarded in the middle until the music effect and the lighting effect reach the best matching value, so that the music and lighting effect animation can achieve the best human sensory experience.

[0077] In one embodiment, after acquiring the plurality of first amplitudes of the parsed audio data with the first preset time length as a period, the method further includes:

[0078] Perform an inverse Fourier transform on the parsed audio data, and obtain multiple target scores of the restored audio data with a second preset time period; determine the corresponding preset lighting effect animation based on the target scores; and when playing the audio data, control the dot matrix screen to display the corresponding preset lighting effect animation in sequence.

[0079] It can be understood that the audio data transmitted in the frequency domain is converted into time domain information through fast inverse Fourier transform, and then this time domain information is integrated according to the animation duration. The integral value obtained at the end of the duration is divided into a number of segments equal to the lighting effect animation, and this number of segments is used as the trigger source of the lighting effect animation.

[0080] Exemplarily, the obtained integral value is divided into 16 segments, each of which is used as a trigger source for the lighting effect animation, so as to realize audio-triggered lighting effect animation, thereby achieving the effect of real-time rhythmic movement of external lights.

[0081] Through the above method, the music rhythm can be associated with the dot matrix animation. By using the amplitude and integral as the trigger source of the lighting effect animation, combined with the timed playback and the division of the animation into different trigger start frames, the lighting effects can be made to move in real time with the music while retaining a relatively complete animation effect to enrich the human sensory experience.

[0082] Based on the same inventive concept as the above embodiments, the present application provides a dot matrix screen control system, which includes a music playback source 11, a music analysis controller 12, an external light controller 13, an external light register and an LED 14. Figure 2 As shown, the implemented dot matrix screen control method includes:

[0083] When parsing the audio data to be played, the music parsing controller 12 will perform preliminary processing on the cached audio, that is, convert the analog signal of the audio data to be played into a digital signal, and then analyze the frequency of the audio to be played through fast Fourier transform, that is, convert the audio to be played from the time domain to the frequency domain, so that multiple frequencies and amplitudes in the audio can be identified and processed, and finally, according to the user's personalized settings or the first preset duration set based on the specific duration of the audio to be played, the first preset duration is set as an interval to obtain multiple first amplitudes of the parsed audio to be played. It should be noted that the entire audio to be played can be divided into several segments at intervals of the first preset duration, and the first amplitude corresponding to each segment of audio is determined. Finally, the above information is sent to the external lighting controller 13.

[0084] When the music source 11 plays the cached music, the external light controller 13 controls the external light register and the LED 14 to light up to realize the preset light effect animation effect, thereby realizing audio-triggered light effect animation and realizing real-time rhythm of external lights.

[0085] The music playing source 11 includes at least one of an online audio source, a local audio source, and a Bluetooth audio source.

[0086] Optionally, online audio source refers to music or sound provided through Internet streaming services. For example, audio content provided by music streaming platforms such as Spotify, Apple Music, and YouTube Music. Local audio source refers to audio files stored on the user's device. For example, music files stored in the car computer or a local USB flash drive may be in MP3, WAV, FLAC, etc. Bluetooth audio source refers to audio signals transmitted from another device to the car computer via Bluetooth technology.

[0087] Based on the same inventive concept as the above embodiments, the present application provides a dot matrix screen control device, see Figure 3 The dot matrix screen control device can be implemented in software and / or hardware. The dot matrix screen control device includes:

[0088] The parsing module 21 is used to parse the audio data to be played, and obtain a plurality of first amplitudes of the parsed audio data with a first preset time length as a period.

[0089] The animation determination module 22 is used to determine the corresponding preset lighting effect animation based on the first amplitude.

[0090] The animation display module 23 is used to control the dot matrix screen to display the corresponding preset light effect animation in sequence when playing the audio data.

[0091] In one implementation, the parsing module 21 is specifically configured to:

[0092] Within the first preset time length, a second amplitude of the audio data is acquired with a second preset time length as a period; and an average value of the second amplitude is determined as the first amplitude.

[0093] In one implementation, the animation determination module 22 is specifically configured to:

[0094] The expected range of the first amplitude is divided into a plurality of amplitude intervals, and a plurality of preset lighting effect animations are determined; based on the correspondence between the preset amplitude intervals and the preset lighting effect animations, the preset lighting effect animation corresponding to the first amplitude is determined.

[0095] For the specific definition of the dot matrix screen control device, please refer to the definition of the dot matrix screen control method above, which will not be repeated here. Each module in the above-mentioned dot matrix screen control device can be implemented in whole or in part by software, hardware and a combination thereof. The above-mentioned modules can be embedded in or independent of the processor in the electronic device in the form of hardware, or can be stored in the memory of the electronic device in the form of software, so that the processor can call and execute the operations corresponding to the above modules.

[0096] Based on the same inventive concept as the aforementioned embodiment, the present application further provides an electronic device, comprising a processor and a memory for storing executable instructions; wherein the processor is configured to execute the instructions to implement the dot matrix screen control method as described in the aforementioned embodiment.

[0097] Based on the same inventive concept as the aforementioned embodiment, the present application further provides a computer-readable storage medium, in which a computer program is stored. When the instructions in the computer-readable storage medium are executed by a processor, the dot matrix screen control method as described in the aforementioned embodiment is implemented.

[0098] In the present application, the same or similar terminology concepts, technical solutions and / or application scenario descriptions are generally described in detail only the first time they appear. When they appear again later, they are generally not repeated for the sake of brevity. When understanding the technical solutions and other contents of the present application, for the same or similar terminology concepts, technical solutions and / or application scenario descriptions that are not described in detail later, reference can be made to the previous related detailed descriptions.

[0099] In the present application, the description of each embodiment has its own emphasis. For parts that are not described or recorded in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0100] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0101] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A dot matrix screen control method, characterized in that: The method comprises: parsing the audio data to be played, and obtaining a plurality of first amplitudes of the parsed audio data with a first preset time length as a period; Determine a corresponding preset lighting effect animation based on the first amplitude; When the audio data is played, the dot matrix screen is controlled to display the corresponding preset light effect animations in sequence.

2. The method according to claim 1, characterized in that The step of acquiring a plurality of first amplitudes of the audio data with a first preset duration as a period includes: Within the first preset time length, obtaining a second amplitude of the audio data with a second preset time length as a period; An average value of the second amplitudes is determined as the first amplitude.

3. The method according to claim 1, characterized in that The determining of the corresponding preset lighting effect animation based on the first amplitude includes: Dividing the expected range of the first amplitude into a plurality of amplitude intervals, and determining a plurality of preset lighting effect animations; Based on the corresponding relationship between the preset amplitude range and the preset lighting effect animation, the preset lighting effect animation corresponding to the first amplitude is determined.

4. The method according to claim 1, characterized in that: After acquiring a plurality of first amplitudes of the parsed audio data with the first preset time length as a period, the method further includes: When the number of the first amplitudes within the preset amplitude range exceeds a preset number, the to-be-played audio is amplified based on a gain coefficient corresponding to the audio type of the audio data.

5. The method according to claim 1, characterized in that After acquiring a plurality of first amplitudes of the parsed audio data with the first preset time length as a period, the method further includes: Determine a preset timestamp in a corresponding preset lighting effect animation based on the first amplitude; When playing the audio data, determining the first amplitude corresponding to the audio data at the current moment with a third preset time length as a period; The preset lighting effect animation is played according to the preset timestamp.

6. The method according to claim 5, characterized in that The step of determining a preset timestamp in a corresponding preset lighting effect animation based on the first amplitude includes: Dividing the expected range of the first amplitude into a plurality of amplitude intervals, and determining a plurality of preset timestamps in the preset lighting effect animations; Based on the preset correspondence between the amplitude interval and the preset timestamp, a preset timestamp in the preset lighting effect animation corresponding to the first amplitude is determined.

7. The method according to claim 1, characterized in that After acquiring a plurality of first amplitudes of the parsed audio data with the first preset time length as a period, the method further includes: Performing an inverse Fourier transform on the parsed audio data, and obtaining a plurality of target integrals of the restored audio data with a second preset time length as a period; Determine a corresponding preset lighting effect animation based on the target score; When the audio data is played, the dot matrix screen is controlled to display the corresponding preset light effect animations in sequence.

8. A dot matrix screen control device, characterized in that: include: An analysis module, used for analyzing the audio data to be played, and obtaining a plurality of first amplitudes of the analyzed audio data with a first preset time length as a period; An animation determination module, used to determine a corresponding preset lighting effect animation based on the first amplitude; The animation display module is used to control the dot matrix screen to display the corresponding preset lighting effect animation in sequence when playing the audio data.

9. An electronic device, characterized in that: include: A processor and a memory for storing executable instructions; wherein the processor is configured to execute the instructions to implement the dot matrix screen control method according to any one of claims 1 to 7.

10. A computer-readable storage medium, characterized in that: When the instructions in the computer-readable storage medium are executed by a processor, the dot matrix screen control method according to any one of claims 1 to 7 is implemented.

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