Portable Bluetooth lyric display and playing display system

Abstract

An embodiment of the utility model provides a portable Bluetooth lyric display and play display system, which comprises a driving chip, a Bluetooth receiving chip and a monochromatic LED dot matrix, the driving chip is respectively connected with the Bluetooth receiving chip and the monochromatic LED dot matrix, the Bluetooth receiving chip is used for receiving signals to be displayed, the driving chip is connected with the monochromatic LED dot matrix, and the monochromatic LED dot matrix is used for displaying the signals to be displayed. The single-color LED dot matrix is used for driving the single-color LED dot matrix to achieve the display function, common single-color LEDs can be used, a small number of driving chips are used for achieving display driving, the synchronous lyric display function is achieved by being matched with a Bluetooth chip to transmit lyrics, cost is low, power consumption is low, the size is small, and using is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of displays, and in particular to a portable Bluetooth lyrics display and a playing and displaying system. Background Art

[0002] At present, the display screens that can display lyrics and subtitles on the market are basically used in car audio systems, and must have color screens and central control system support. Most ordinary home Bluetooth speakers only have indicator lights or digital tubes to display simple time and mode interfaces, and cannot display Chinese or other languages, let alone lyrics. At present, the speakers with display screens on the market are smart speakers equipped with LCD screens. The CPU chip has Bluetooth, WIFI, external RAM chip, and external LCD screen module. They have low integration, high power consumption, need to connect to WIFI, and the chips and screens used are expensive; the entire product is integrated, which is inconvenient to move and carry. Summary of the invention

[0003] The embodiment of the utility model provides a portable Bluetooth lyrics display and playback display system, which can use ordinary monochrome LEDs and a small number of driver chips to realize display driving, and has low cost, low power consumption, small size and portability.

[0004] A first aspect of an embodiment of the utility model provides a portable Bluetooth lyrics display, comprising:

[0005] A driving chip, a Bluetooth receiving chip, and a monochrome LED dot matrix, wherein the driving chip is connected to the Bluetooth receiving chip and the monochrome LED dot matrix respectively, the Bluetooth receiving chip is used to receive a signal to be displayed, and the driving chip is connected to the monochrome LED dot matrix to drive the monochrome LED dot matrix to realize a display function.

[0006] Optionally, the number of the driving chips is two, and the two driving chips, the one Bluetooth receiving chip, and the monochrome LED dot matrix are integrated on a two-layer PCB board.

[0007] Optionally, the driving chip is a microcontroller chip.

[0008] Optionally, the driving chip includes a first driving chip, a bypass control pin of the first driving chip is connected to the first end of a first capacitor, a battery pin of the first driving chip is connected to the first end of a second capacitor, a ground pin of the first driving chip, a second pin of the first capacitor and a second pin of the second capacitor are grounded; 17 signal output pins of the first driving chip are connected to the monochrome LED dot matrix;

[0009] A signal output pin of the first driver chip is connected to the Bluetooth receiving chip; a signal output pin of the first driver chip is connected to the first end of the third resistor and the first signal input end; the second end of the third resistor is connected to the input interface.

[0010] Optionally, the driver chip further includes a second driver chip, a bypass control pin of the second driver chip is connected to the first end of the third capacitor, a battery pin of the second driver chip is connected to the first end of the fourth capacitor, a ground pin of the second driver chip, a second pin of the third capacitor and a second pin of the fourth capacitor are grounded; and 18 signal output pins of the second driver chip are connected to the monochrome LED dot matrix;

[0011] A signal output pin of the second driving chip is connected to the first end of the first resistor, the first end of the second resistor and the second signal input end; the second end of the first resistor is connected to the Bluetooth receiving chip; and the second end of the second resistor is grounded.

[0012] Optionally, each row of the monochromatic LED dot matrix includes 34 monochromatic LEDs, which are connected to 17 signal output pins of the first driver chip and 18 signal output pins of the second driver chip.

[0013] Optionally, the first ends of the 34 monochrome LEDs in each row of the monochrome LED dot matrix are connected to a signal output pin in the first driver chip or the second driver chip; the second ends of the 34 monochrome LEDs in each row of the monochrome LED dot matrix are respectively connected to other signal output pins among the 35 signal output pins.

[0014] Optionally, an interface device is further included, wherein a first pin of the interface device is grounded, and a second pin of the interface device is connected to an input interface; and a second pin of the interface device is connected to a battery pin.

[0015] A second aspect of the embodiment of the utility model provides a playback display system, comprising:

[0016] It comprises a Bluetooth playback device and the portable Bluetooth lyrics display as described in the first aspect, wherein the portable Bluetooth lyrics display is used to receive a signal to be displayed sent by the Bluetooth playback device; and display the signal to be displayed.

[0017] Optionally, the Bluetooth playback device includes a Bluetooth speaker.

[0018] Optionally, the Bluetooth playback device includes a user terminal, and the user terminal can be connected to at least one of the portable Bluetooth lyrics displays through Bluetooth.

[0019] Implementing the embodiments of the utility model has at least the following beneficial effects:

[0020] It can be seen that the portable Bluetooth lyrics display and playback display system in the embodiment of the utility model includes a driving chip, a Bluetooth receiving chip, and a monochrome LED dot matrix. The driving chip is respectively connected to the Bluetooth receiving chip and the monochrome LED dot matrix. The Bluetooth receiving chip is used to receive the signal to be displayed. The driving chip is connected to the monochrome LED dot matrix and is used to drive the monochrome LED dot matrix to realize the display function. It can use ordinary monochrome LEDs and a small number of driving chips to realize display driving, and cooperate with the Bluetooth chip to transmit lyrics to realize the synchronous lyrics display function. It has low cost, low power consumption, small size and is portable. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 A schematic diagram of the structure of a portable Bluetooth lyrics display provided by an embodiment of the utility model;

[0023] Figure 2 A partial structural schematic diagram of a display driving circuit of a display provided by an embodiment of the utility model;

[0024] Figure 3 A partial structural schematic diagram of a display driving circuit of a display provided by an embodiment of the utility model;

[0025] Figure 4 A schematic diagram of a partial structure of a monochrome LED dot matrix of a display provided by an embodiment of the utility model;

[0026] Figure 5 A schematic diagram of the structure of an interface device for a display provided by an embodiment of the utility model;

[0027] Figure 6 The present invention provides a structural diagram of a playback and display system according to an embodiment of the present invention. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] The terms "first", "second", etc. in the specification and claims of the utility model and the above drawings are used to distinguish different objects rather than to describe a specific order. In addition, the terms "include" and "have" and any of their variations are intended to cover non-exclusive inclusions.

[0030] Reference to "embodiments" in the present invention means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present invention. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described in the present invention may be combined with other embodiments.

[0031] like Figure 1-Figure 5 As shown, the utility model proposes a portable Bluetooth lyrics display 100, including a driving chip 101, a Bluetooth receiving chip 102, and a monochrome LED dot matrix 103. The driving chip 101 is respectively connected to the Bluetooth receiving chip 102 and the monochrome LED dot matrix 103. The Bluetooth receiving chip 102 is used to receive a signal to be displayed. The driving chip 101 is connected to the monochrome LED dot matrix 103 to drive the monochrome LED dot matrix 103 to realize a display function. It can use ordinary monochrome LEDs (Light Emitting Diodes) and a small number of driving chips to realize display driving. The Bluetooth chip is used to transmit lyrics to realize a synchronous lyrics display function. It has low cost, low power consumption, small size and is portable.

[0032] The display of this solution does not need to be limited to the car audio system. As long as there is a Bluetooth speaker or connected to the mobile phone Bluetooth, it can be used in any scene.

[0033] The display of this solution can use a smaller number of chips, the display structure is simpler, and the cost can be reduced.

[0034] The display driving circuit of the portable Bluetooth lyrics display 100 includes a driving chip, a Bluetooth receiving chip and a monochrome LED dot matrix.

[0035] In one embodiment, if Figure 1 As shown, the number of the driving chips is two, and the two driving chips, one Bluetooth receiving chip and the single-color LED dot matrix are integrated on a two-layer PCB board.

[0036] Among them, the driving chip can adopt a microcontroller unit (MCU). By using ordinary monochrome LEDs and a small number of driving chips to realize display driving, the lyrics data is transmitted in conjunction with a Bluetooth chip to realize the synchronous lyrics display function. It has low cost, low power consumption, small size and is portable.

[0037] In this application, a driver chip with sufficient IO pins may be used, or two driver chips may be used, such as Figure 2-Figure 4 As shown, only 35 IO pins are used in total to realize the display drive of monochrome LED dot matrix, and the display is clear, the brightness is uniform, and the refresh rate is high. Among them, two driver chips are used. Compared with a single driver chip with more IO pins, the cost of using two driver chips in combination is lower, and it can provide sufficient and stable working current to ensure display brightness.

[0038] like Figure 2 As shown, Figure 2 It is a partial structural schematic diagram of a display driving circuit of a display, wherein the driving chip comprises a first driving chip U1, a bypass control pin BYPASS of the first driving chip U1 is connected to a first end of a first capacitor C1, a battery pin VBAT of the first driving chip U1 is connected to a first end of a second capacitor C2, a ground pin GND of the first driving chip U1, a second pin of the first capacitor C1 and a second pin of the second capacitor C2 are grounded; 17 signal output pins of the first driving chip U1 are connected to the monochrome LED dot matrix;

[0039] A signal output pin P15 of the first driver chip U1 is connected to the Bluetooth receiving chip; a signal output pin P29 of the first driver chip U1 is connected to the first end of the third resistor R3 and the first signal input end IN; the second end of the third resistor R3 is connected to the input interface UP1.

[0040] Among them, the 17 signal output pins of the first driving chip U1 connected to the monochrome LED dot matrix are P10-P14, P16-P18, P1B-P1C, P20-P22, and P24-P27 respectively.

[0041] A signal output pin P15 of the first driver chip U1 is connected to a receiving pin SHTRX2 of the Bluetooth receiving chip.

[0042] like Figure 3 As shown, Figure 3It is a partial structural schematic diagram of a monochrome LED dot matrix of a display, wherein the driver chip further includes a second driver chip U2, a bypass control pin BYPASS of the second driver chip U2 is connected to a first end of a third capacitor C3, a battery pin VBAT of the second driver chip U2 is connected to a first end of a fourth capacitor C4, a ground pin GND of the second driver chip U2, a second pin of the third capacitor C3, and a second pin of the fourth capacitor C4 are grounded; 18 signal output pins of the second driver chip U2 are connected to the monochrome LED dot matrix;

[0043] A signal output pin P29 of the second driving chip U2 is connected to the first end of the first resistor, the first end of the second resistor R2 and the second signal input end UP; the second end of the first resistor R1 is connected to the Bluetooth receiving chip; the second end of the second resistor R2 is grounded GND.

[0044] Among them, the 18 signal output pins of the second driving chip U2 connected to the monochrome LED dot matrix are P10-P18, P1B-P1C, P20-P22, and P24-P27 respectively.

[0045] The second end of the first resistor R1 is connected to the receiving pin SHTRX2 of the Bluetooth receiving chip.

[0046] like Figure 4 As shown, Figure 4 It is a partial structural diagram of a display driving circuit of a display, wherein each row of the monochrome LED dot matrix includes 34 monochrome LEDs, which are connected to 17 signal output pins of the first driving chip and 18 signal output pins of the second driving chip.

[0047] The first ends of the 34 monochrome LEDs in each row of the monochrome LED dot matrix are connected to a signal output pin in the first driver chip or the second driver chip; the second ends of the 34 monochrome LEDs in each row of the monochrome LED dot matrix are respectively connected to other signal output pins among the 35 signal output pins.

[0048] Among them, the 17 signal output pins of the first driver chip and the 18 signal output pins of the second driver chip are used to connect the monochrome LED dot matrix. Using MCU through self-developed software programming and LED special arrangement, the two chips share 35 signal output pins, and it can be obtained that 35X34=1190 can drive 12*12*8=1152 LEDs for display. It takes 12×12=144 to display one word, and 1152 LEDs are required to display 8 words. In other words, this solution uses one or two MCUs to display 8 words. Compared with the existing technology that requires about 10 driver chips to display 10 Chinese characters, this solution uses fewer driver chips, low cost, and the portable Bluetooth lyrics display is small in size and easy to use.

[0049] For example, the first ends of the 34 monochrome LEDs in the first row are connected to the signal output pin P18 of the first driver chip, corresponding to SEG1, and the second ends of the 34 monochrome LEDs in each row of the monochrome LED dot matrix are respectively connected to other signal output pins among the 35 signal output pins, corresponding to SEG2-SEG35.

[0050] like Figure 5 As shown, the portable Bluetooth lyrics display further includes an interface device J1, a first pin of the interface device J1 is grounded, a second pin of the interface device J1 is connected to an input interface, and a second pin of the interface device J1 is connected to a battery pin.

[0051] The utility model also provides a playback display system, comprising a Bluetooth playback device and the portable Bluetooth lyrics display as described above, wherein the portable Bluetooth lyrics display is used to receive a signal to be displayed sent by the Bluetooth playback device; and display the signal to be displayed.

[0052] like Figure 6 As shown, the Bluetooth playback device includes a Bluetooth speaker.

[0053] Optionally, the Bluetooth playback device includes a user terminal, and the user terminal can be connected to at least one of the portable Bluetooth lyrics displays through Bluetooth.

[0054] Specifically, one user terminal can connect to two portable Bluetooth lyrics displays, and the lyrics will be displayed and scrolled in advance without delay. The display only needs to be connected to the mobile phone Bluetooth without connecting to the Internet.

[0055] In the several embodiments provided by the present utility model, it should be understood that the disclosed device can be implemented in other ways. For example, the device embodiments described above are only schematic, such as the division of the units, which is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, and the indirect coupling or communication connection of devices or units can be electrical or other forms.

[0056] The above is a detailed introduction to the embodiments of the utility model. Specific examples are used in this article to illustrate the principles and implementation methods of the utility model. The description of the above embodiments is only used to help understand the utility model and its core ideas. At the same time, for those skilled in the art, according to the ideas of the utility model, there will be changes in the specific implementation methods and application scopes. In summary, the content of this specification should not be understood as a limitation on the utility model.

Claims

1. A portable Bluetooth lyrics display, characterized in that: include: A driving chip, a Bluetooth receiving chip, and a monochrome LED dot matrix, wherein the driving chip is connected to the Bluetooth receiving chip and the monochrome LED dot matrix respectively, the Bluetooth receiving chip is used to receive a signal to be displayed, and the driving chip is connected to the monochrome LED dot matrix to drive the monochrome LED dot matrix to realize a display function.

2. The portable Bluetooth lyrics display according to claim 1, characterized in that: The number of the driving chips is two, and the two driving chips, the one Bluetooth receiving chip and the single-color LED dot matrix are integrated on a two-layer PCB board.

3. The portable Bluetooth lyrics display according to claim 2, characterized in that: The driving chip is a microcontroller chip.

4. The portable Bluetooth lyrics display according to claim 3, characterized in that: The driving chip comprises a first driving chip, a bypass control pin of the first driving chip is connected to a first end of a first capacitor, a battery pin of the first driving chip is connected to a first end of a second capacitor, a ground pin of the first driving chip, a second pin of the first capacitor and a second pin of the second capacitor are grounded; 17 signal output pins of the first driving chip are connected to the single-color LED dot matrix; A signal output pin of the first driver chip is connected to the Bluetooth receiving chip; a signal output pin of the first driver chip is connected to the first end of the third resistor and the first signal input end; the second end of the third resistor is connected to the input interface.

5. The portable Bluetooth lyrics display according to claim 4, characterized in that: The driver chip further includes a second driver chip, a bypass control pin of the second driver chip is connected to the first end of the third capacitor, a battery pin of the second driver chip is connected to the first end of the fourth capacitor, a ground pin of the second driver chip, a second pin of the third capacitor and a second pin of the fourth capacitor are grounded; 18 signal output pins of the second driver chip are connected to the single-color LED dot matrix; A signal output pin of the second driving chip is connected to the first end of the first resistor, the first end of the second resistor and the second signal input end; the second end of the first resistor is connected to the Bluetooth receiving chip; and the second end of the second resistor is grounded.

6. The portable Bluetooth lyrics display according to claim 5, characterized in that: Each row of the monochromatic LED dot matrix includes 34 monochromatic LEDs, which are connected to 17 signal output pins of the first driving chip and 18 signal output pins of the second driving chip.

7. The portable Bluetooth lyrics display according to claim 6, characterized in that: The first ends of the 34 monochrome LEDs in each row of the monochrome LED dot matrix are connected to a signal output pin in the first driver chip or the second driver chip; the second ends of the 34 monochrome LEDs in each row of the monochrome LED dot matrix are respectively connected to other signal output pins among the 35 signal output pins.

8. The portable Bluetooth lyrics display according to claim 7, characterized in that: It also includes an interface device, wherein a first pin of the interface device is grounded, and a second pin of the interface device is connected to an input interface; and a second pin of the interface device is connected to a battery pin.

9. A playback display system, characterized in that: It comprises a Bluetooth playback device and a portable Bluetooth lyrics display as described in any one of claims 1-8, wherein the portable Bluetooth lyrics display is used to receive a signal to be displayed sent by the Bluetooth playback device; and display the signal to be displayed.

10. The playback and display system according to claim 9, characterized in that: The Bluetooth playback device includes a Bluetooth speaker; or, The Bluetooth playback device includes a user terminal, and the user terminal can be connected to at least one of the portable Bluetooth lyrics displays through Bluetooth.

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