CN115081572A - Music label interaction system and music label interaction method - Google Patents

Abstract

The invention relates to a music label interaction system and a music label interaction method. The invention achieves the purpose of full duplex by separating the voice channel from the communication channel.

Description

Music tag interaction system and music tag interaction method

Technical Field

The present invention relates to a radio frequency application technology, and more particularly, to a music tag interaction system and a music tag interaction method.

Background

Fig. 1 is a circuit diagram of a related art rfid tag circuit. Referring to fig. 1, the coil Lr induces an external magnetic field to generate oscillation, and provides power to the microprocessor 100 through bridge rectification, and the microprocessor 100 loads a signal to the resonant circuit of the coil Lr and the capacitor Cr through the output interface Dout, and transmits data back to the reader through mutual inductance.

As the cost decreases, more and more Radio Frequency Identification (RFID) technology is used in the consumer and toy fields. In terms of Reader cost and mass production, 125KHz rfid technology is common in the field of toys. From the viewpoint of digital wireless transmission, to transmit voice Data and to enable Multi-Tag (Multi-Tag) operation, basically, the Data Rate (Data Rate) should be fast to deal with the problems of transmission error, Data loss, communication collision, etc.

With the specification of EM4100/4200 compatibility, the Data Rate (Data Rate) is about 125 KHz/16-7.8125 Kbps, and the Data Rate cannot be easily increased because of the low carrier frequency. The use of such speeds to transfer voice Data (Audio Data) is somewhat inadequate. Meanwhile, when there are multiple radio frequency identification tags (tags), Collision of communication (Collision) is handled, and thus, the effective data rate is further reduced.

In taiwan area utility model patent No. M542893 of the same inventor of the present application, a technology of a wireless music tag is disclosed. In this patent, the tag transmits sound to a receiving end in a unidirectional manner by transmitting only analog sound waves, thereby solving the above-mentioned problem of insufficient speed, and can simultaneously transmit a plurality of sounds for mixing. However, the analog sound is continuously transmitted, so that the user cannot control the sound transmitted by the music tag.

Similarly, in patent application 108107753, "music tag interaction system and music tag interaction method", the applicant proposes an interactive music tag capable of transmitting analog sound. This technique uses a magnetic field as a channel, carrying sound and control commands. Since the channels of the magnetic field are used simultaneously for voice and control commands, so that they cannot be parallel at the same time, time division multiplexing is necessary. In further expanding applications, such as the simultaneous presence of multiple music tags, collision problems also exist, which increase the communication occupation time and further reduce the sound transmission time.

Disclosure of Invention

An objective of the present invention is to provide a music tag interaction system and a music tag interaction method, wherein an optical transmission channel is added to a music tag, so that analog sound is transmitted to a music tag reading end through a photoelectric effect. The control section is separated from the music section channel. Therefore, the reading end can control playing, pausing, stopping, continuing playing, and the previous or next for the music tag end.

The invention provides a music tag interaction system, which comprises an interaction music tag and an interaction music tag reading device. The interactive music tag comprises an LC resonance circuit, a microprocessor and an optical output circuit. The LC resonant circuit includes a first terminal and a second terminal. The microprocessor is coupled to the first end and the second end of the LC resonance circuit. The optical output circuit is coupled to the microprocessor for outputting an analog optical signal. The interactive music tag reading device comprises a coil, an optical receiving device and a control circuit. The coil is used for providing wireless energy for the interactive music tag and reading a signal transmitted by the interactive music tag. The optical receiving device receives the analog optical signal and converts the analog optical signal into an analog sound electric signal. The control circuit is coupled to the coil and the optical receiving device for controlling the wireless energy sent by the coil. When the interactive music tag approaches the interactive music tag reading device, the LC resonance circuit receives wireless energy sent by the interactive music tag reading device and starts the microprocessor. The microprocessor outputs an analog sound signal to the optical output circuit according to the stored sound data, the optical output circuit determines the intensity of the analog optical signal according to the magnitude of the analog sound signal, and the optical output circuit determines the frequency of the analog optical signal according to the frequency of the analog sound signal. The interactive music tag reading device inserts a control signal into the wireless energy, the microprocessor receives the wireless energy from one of the first end and the second end of the resonant circuit, decodes the control signal, and controls an output state of the analog optical signal according to the control signal.

According to the music tag interaction system of the preferred embodiment of the present invention, the optical output circuit is an infrared light emitting diode. In a preferred embodiment, the output states include play, stop, fast forward, fast backward, pause, and double speed play. In a preferred embodiment, the optical receiving device is an infrared photodiode.

In the music tag interaction system according to the preferred embodiment of the invention, the LC resonant circuit includes an inductor and a capacitor. The first end of the inductor is coupled with the first end of the LC resonance circuit, and the second end of the inductor is coupled with the second end of the LC resonance circuit. The first end of the capacitor is coupled with the first end of the LC resonance circuit, and the second end of the capacitor is coupled with the second end of the LC resonance circuit.

The invention further provides a music tag interaction method, which is suitable for at least one interactive music tag and an interactive music tag reading device, and the music tag interaction method comprises the following steps: when the interactive music tag approaches the interactive music tag reading device: outputting wireless energy to the interactive music label to start the interactive music label; outputting an analog optical signal to an optical receiving device of the interactive music tag reading device according to the stored sound data, so that the analog optical signal is converted into an analog sound electric signal; when the interactive music tag reading device performs output control on the interactive music tag, inserting a control signal into the wireless energy; and when the interactive music tag device receives the wireless energy through the LC resonant circuit of the interactive music tag: decoding the wireless energy to decode the control signal; and controlling an output state of the analog optical signal according to the control signal.

The invention is characterized in that a transmission mechanism of an optical channel is added in the tag, an analog sound signal is transmitted by the optical channel, and a tag identification and control signal part is transmitted by a magnetic channel, so that a reading end can give an instruction to the music tag, and the music tag can obtain the instruction to reflect on the output analog music signal by decoding. Therefore, the operability of the music tag reading device and the music tag can be achieved, and the interactivity of the music tag reading device and the music tag is further improved.

In order to make the aforementioned and other objects, features and advantages of the invention comprehensible, preferred embodiments accompanied with figures are described in detail below.

Drawings

Fig. 1 is a circuit diagram of a related art rfid tag circuit.

Fig. 2 is a circuit diagram of a music tag interaction system according to a preferred embodiment of the invention.

Fig. 3 is a circuit diagram of an interactive music tag 20 of a music tag interaction system according to a preferred embodiment of the invention.

Fig. 4 is a schematic diagram illustrating a music tag interaction system having a plurality of interactive music tags according to a preferred embodiment of the invention.

Fig. 5 is a schematic diagram illustrating a music tag interaction system having a plurality of interactive music tags according to a preferred embodiment of the invention.

Fig. 6 is a circuit diagram of a mixing circuit according to a preferred embodiment of the invention.

Fig. 7 is a circuit diagram of a mixing circuit according to a preferred embodiment of the invention.

Fig. 8 is a schematic diagram illustrating Multi-channel communication (Multi-channel communication) using an optical channel according to a preferred embodiment of the invention.

Fig. 9 is a flowchart illustrating an interactive music tag reading apparatus of a music tag interaction method according to a preferred embodiment of the invention.

Fig. 10 is a flowchart illustrating an interactive music tag interaction method according to a preferred embodiment of the invention.

Lr: coil

100: microprocessor

Dout: output interface

Cr: capacitor with a capacitor element

20: interactive music label

21: interactive music label reading device

211: coil

212: optical receiver

213: control circuit

201: resonance coil

202: optical output circuit

300: LC resonance circuit

301: microprocessor

302: resonance capacitor

AUDN: music output interface of microprocessor 301

215. OP1, OP 2: amplifier with a high-frequency amplifier

214: sound playing device

401-403: interactive music label

404. 501-503: infrared photodiode receiver

IR1 to IR 3: analog optical signal

AUD 1-AUD 3: analog sound signal

60: amplifier with a high-frequency amplifier

R1-R6: electric resistance

C1: capacitor with a capacitor element

Q1, Q2: bipolar transistor

ACIN: endpoint

S901 to S906: the steps of the interactive music tag reading apparatus of the music tag interaction method according to a preferred embodiment of the present invention

S1001 to S1006: the steps of the interactive music label of the music label interaction method of a preferred embodiment of the present invention

Detailed Description

Fig. 2 is a circuit diagram of a music tag interaction system according to a preferred embodiment of the invention. Referring to fig. 2, the music tag interaction system includes an interactive music tag 20 and an interactive music tag reading device 21. The interactive music tag reading apparatus 21 includes a coil 211, an optical receiving device 212, and a control circuit 213. The interactive music tag 20 has two signal transmission channels, namely a resonant coil 201 for transmitting a magnetic field signal and an optical output circuit 202 for transmitting an analog audio signal, wherein the optical output circuit 202 is preferably implemented by an infrared light emitting diode (IR LED). However, those skilled in the art should understand that ordinary leds can be used as the embodiments of the present invention. However, in the preferred embodiment, the infrared rays are not visible and will not interfere with the general users, so the invention is not limited thereto. Likewise, in this embodiment, the optical receiving device 212 is preferably implemented by an infrared photodiode receiver (IR Photo-Diode). One of ordinary skill in the art will recognize that a conventional photodiode receiver may be used as an embodiment of the present invention. Therefore, the present invention is not limited thereto.

Fig. 3 is a circuit diagram of the interactive music tag 20 of the music tag interaction system according to a preferred embodiment of the invention. Referring to fig. 3, the interactive music tag 20 includes an LC resonant circuit 300, a microprocessor 301, and an optical output circuit 202. LC resonant circuit 300 is composed of resonant coil 201 and resonant capacitor 302. The microprocessor 301 is coupled to two ends of the LC resonant circuit 300 for receiving energy from the LC resonant circuit 300. The optical output circuit 202 is coupled to the microprocessor 301.

Referring to fig. 2 and 3, the coil 211 is used to provide wireless energy for the interactive music tag 20. When the interactive music tag 20 approaches the interactive music tag reading device 21, the LC resonant circuit 300 receives the wireless energy from the interactive music tag reading device, and starts the microprocessor 301. When the microprocessor 301 is activated, it starts to control the LC resonant circuit 300 to transmit the identification code (RFID) of the tag by a magnetic field signal. After receiving the identification code (RFID) of the interactive music tag 20, the interactive music tag reading device 21 may insert a control signal into the wireless energy output by the coil 211 to request the interactive music tag 20 to output music. When the microprocessor 301 of the interactive music tag 20 decodes the command of the control signal through the wireless energy received by the LC resonant circuit 300, the microprocessor 301 outputs an analog audio signal to the optical output circuit (in this embodiment, an infrared light emitting diode) 202 through the music output interface (AUDN) of the microprocessor 301 according to the audio data stored therein, the optical output circuit 202 determines the intensity of the analog optical signal according to the magnitude of the analog audio signal, and the optical output circuit 202 determines the frequency of the analog optical signal according to the frequency of the analog audio signal.

At this time, the interactive music tag reading device 21 receives the analog optical signal from the optical receiving device (in this embodiment, an infrared photodiode receiver) 212, and converts the analog optical signal into an analog audio electrical signal by the photoelectric effect. After being amplified by the amplifier 215, the control circuit 213 plays the amplified analog audio electric signal by the audio playing device 214.

The control signal outputted by the interactive music tag reading device 21 can control the interactive music tag 20 to output the analog music of the analog optical signal, and can also control the output state of the analog optical signal of the interactive music tag 20, including playing, stopping, fast forwarding, fast rewinding, pausing, double speed playing, and the like. Since the playing control of music is performed on the tag, the interactive music tag reading device 21 does not need to perform analog-to-digital conversion and temporary storage of the received analog music.

Although the above embodiment is illustrated with a single interactive music tag 20, it should be understood by those skilled in the art that the present invention can be applied to a plurality of interactive music tags 20. Fig. 4 is a schematic diagram illustrating a music tag interaction system having a plurality of interactive music tags according to a preferred embodiment of the invention. Referring to fig. 4, in this embodiment, each of the interactive music tags 401 to 403 is represented by an infrared light emitting diode, and the interactive music tag reading device 21 is represented by an infrared photodiode receiver 404. The analog optical signals IR 1-IR 3 outputted by the interactive music tags 401-403 can be directly overlapped (mixed) on light, so in this embodiment, the interactive music tag reading apparatus 21 only needs one set of amplifier to convert the analog optical signals IR 1-IR 3 outputted by the three interactive music tags 401-403 into analog audio signals without additional mixing.

In addition, although only one infrared light emitting diode is shown as the interactive music tags 401 to 403 in the above embodiments, it should be understood that, referring to the embodiments of fig. 2 and 3, the circuits and operations of the interactive music tags 401 to 403 may be the same as or similar to those of fig. 2 and 3, and the invention is not limited thereto.

Fig. 5 is a schematic diagram illustrating a music tag interaction system having a plurality of interactive music tags according to a preferred embodiment of the invention. Referring to fig. 4 and 5, the difference between fig. 5 and 4 is that the interactive music tag reading apparatus 21 includes three infrared photodiode receivers 501-503 corresponding to three interactive music tags 401-403, so in this embodiment, the analog optical signals IR 1-IR 3 are converted into 3 analog audio signals AUD 1-AUD 3. Therefore, three amplifiers corresponding to the three infrared photodiode receivers 501 to 503 are required and the mixing is performed on the circuit. Mixing can be performed by using a conventional analog addition circuit, as shown in fig. 6, fig. 6 is a circuit diagram of a mixing circuit according to a preferred embodiment of the present invention. Referring to fig. 6, the circuit uses an amplifier 60, and a three-way mixer circuit formed by resistors R1-R6 and a capacitor C1.

Fig. 7 is a circuit diagram of a mixing circuit according to a preferred embodiment of the invention. Referring to fig. 7, in the embodiment, the two bipolar transistors Q1 and Q2 and the amplifiers OP1 and OP2 composed of the resistors R1 to R6 are used to amplify the signals received by the infrared photodiode receivers 701 and 702, respectively, and the output terminals of the amplifiers OP1 and OP2 are both coupled to the ACIN terminal. Thereby, the sounds received by the infrared photodiode receivers 701, 702 are mixed on the circuit.

It can be seen from the above embodiments that, since the optical signals adopted in the present application are all analog signals, superposition of the analog signals is much easier than processing of digital signals in the circuit. The same infrared photodiode receiver or phototransistor can be used as shown in FIG. 4, and the two are superimposed at the light end for photoelectric conversion. Alternatively, as shown in fig. 5, a plurality of infrared photodiode receivers or photodiodes may be used, and photoelectric conversion may be performed first, and then electrical signals may be superimposed. While the superposition of electrical signals may be implemented as in fig. 6 or fig. 7.

Fig. 8 is a schematic diagram illustrating Multi-channel communication (Multi-channel communication) using optical channels according to a preferred embodiment of the invention. Referring to fig. 8, for background, when using Radio Frequency Identification (RFID) tags, there is a need for multiple sets of tags to be present simultaneously. In conventional rfid tag communication, Amplitude Shift Keying (ASK) is mostly used, so that when communication collision occurs, an anti-collision countermeasure mechanism, such as ALOHA (adaptive Link On-line HAwaii System) communication protocol, needs to be adopted. However, in this embodiment of the music tag, since the second communication channel "light" is introduced to transmit sound, the sound is provided in addition to the original magnetic field communication. The sound can be cut out into a plurality of groups of channels for different labels by different frequencies. For example, the voice occupies a band below 16KHz, the communication uses a band above 16KHz, and the receiving end uses BPF to extract the band of the desired signal for decoding. Thus, in addition to the original magnetic field band, a broadcast (broadcast) common signal may be broadcast, and each audio band may individually transmit a unique signal of the tag, such as an event (event), an audio status (audio status), and the like.

Fig. 9 is a flowchart of an interactive music tag reading apparatus of a music tag interaction method according to a preferred embodiment of the invention. Referring to fig. 9, the music tag interaction method includes the following steps:

step S901: and starting.

Step S902: and outputting wireless energy to the interactive music label to start the interactive music label.

Step S903: receiving a radio frequency signal transmitted by an interactive music tag.

Step S904: and decoding the radio frequency signal to obtain the tag identification code of the interactive music tag.

Step S905: generally, the interactive music tag reading device has configuration buttons, such as a play button, a pause button, a fast forward button, a rewind button, a stop button, and a double speed play button.

Step S906: according to the inputted command, a command code is loaded in the wireless energy.

Fig. 10 is a flowchart illustrating an interactive music tag interaction method according to a preferred embodiment of the invention. Referring to fig. 10, the music tag interaction method includes the following steps:

step S1001: and starting.

Step S1002: a wireless energy is received. This wireless energy is typically electromagnetic energy transmitted by an interactive music tag reader.

Step S1003: outputting an analog optical signal to the interactive music tag reading device.

Step S1004: and judging whether the wireless energy contains a control signal. If no control signal is sent, the judgment is continued. If the control signal is sent, step S1005 is performed.

Step S1005: decoding the wireless energy to decode the control signal.

Step S1006: and controlling an output state of the analog optical signal according to the control signal. Such as play, pause, fast forward, rewind, stop, double speed play, triple speed play, etc. For example, when a pause command is received, the output of the analog optical signal is temporarily stopped; for another example, when receiving "double-speed play", the analog light signal is output according to the double speed of the analog music. Therefore, the radio frequency identification music label can be controlled like controlling a recording tape, and the receiving end can execute the instruction without any temporary storage device because the output of the music label is all analog signals. After completion, the process returns to step S1004 to continue the determination.

In summary, the spirit of the present invention is to add a transmission mechanism of an optical channel to the tag, so as to transmit the analog audio signal via the optical channel, and transmit the tag identification and control signal part via the magnetic channel, so that the reading end can give the music tag command, and the music tag can obtain the command to reflect on the output analog audio signal by decoding. Therefore, the operability of the music tag reading device and the music tag can be achieved, and the interactivity of the music tag reading device and the music tag is further improved.

The detailed description of the preferred embodiments is provided only for the convenience of illustrating the technical contents of the present invention, and the present invention is not limited to the above-described embodiments in a narrow sense, and various modifications made without departing from the spirit of the present invention and the scope of the appended claims are included in the scope of the present invention. Therefore, the scope of the present invention is to be defined by the appended claims.

Claims (12)

1. A music tag interaction system, comprising:

an interactive music tag comprising:

an LC resonance circuit including a first terminal and a second terminal;

a microprocessor coupled to the first and second ends of the LC resonant circuit; and

an optical output circuit coupled to the microprocessor for outputting an analog optical signal; and

an interactive music tag reading apparatus, comprising:

a coil for providing wireless energy to the interactive music label and reading the magnetic field signal transmitted by the interactive music label;

an optical receiving device for receiving the analog optical signal and converting the analog optical signal into an analog sound electric signal; and

a control circuit coupled to the coil and the optical receiver for controlling the wireless energy sent by the coil

Wherein, when the interactive music label is close to the interactive music label reading device, the LC resonance circuit receives the wireless energy sent by the interactive music label reading device, starts the microprocessor,

wherein, the microprocessor outputs an analog sound signal to the optical output circuit according to the stored sound data, the optical output circuit determines the intensity of the analog optical signal according to the magnitude of the analog sound signal, and the optical output circuit determines the frequency of the analog optical signal according to the frequency of the analog sound signal,

the interactive music tag reading device inserts a control signal into the wireless energy, the microprocessor receives the wireless energy from one of the first end and the second end of the resonant circuit, decodes the control signal, and controls an output state of the analog optical signal according to the control signal.

2. The system of claim 1, wherein the optical output circuit is an infrared light emitting diode.

3. The system of claim 1, wherein the output state comprises play, stop, fast forward, fast reverse, pause, double speed play.

4. The musical tag interaction system of claim 1, wherein the LC resonant circuit comprises:

an inductor having a first end and a second end, wherein the first end of the inductor is coupled to the first end of the LC resonant circuit, and the second end of the inductor is coupled to the second end of the LC resonant circuit; and

and the capacitor comprises a first end and a second end, wherein the first end of the capacitor is coupled with the first end of the LC resonance circuit, and the second end of the capacitor is coupled with the second end of the LC resonance circuit.

5. The music tag interaction system of claim 1, wherein the optical receiving device is an infrared photodiode.

6. The system of claim 1, further comprising a second interactive music tag, the second interactive music tag comprising:

a second LC resonant circuit including a first terminal and a second terminal;

a second microprocessor coupled to the first and second ends of the second LC resonant circuit; and

a second optical output circuit coupled to the second microprocessor for outputting a second analog optical signal,

wherein, when the second interactive music tag approaches the interactive music tag reading device, the second LC resonance circuit receives the wireless energy sent by the interactive music tag reading device, starts the second microprocessor,

then, the second microprocessor outputs an analog audio signal to the second optical output circuit according to the stored audio data, the second optical output circuit determines the intensity of the second analog optical signal according to the magnitude of the analog audio signal, and the second optical output circuit determines the frequency of the second analog optical signal according to the frequency of the analog audio signal.

7. The system of claim 6, wherein the interactive music tag reading device further comprises:

a second optical receiving device for receiving the second analog optical signal.

8. The system of claim 1, wherein the optical receiving device is further configured to output an optical data signal, and wherein the interactive music tag reading device further comprises:

a band-pass filter coupled to the optical receiver for performing band-pass filtering; and

a decoding device coupled to the band-pass filter for decoding the optical data signal.

9. The system of claim 8, wherein the decoded data of the optical data signal comprises an event data, a speech state.

10. A music tag interaction method is suitable for at least one interactive music tag and an interactive music tag reading device, and comprises the following steps:

when the interactive music tag approaches the interactive music tag reading device:

outputting wireless energy to the interactive music label to start the interactive music label; and

outputting an analog optical signal to an optical receiving device of the interactive music tag reading device according to the stored sound data, so that the analog optical signal is converted into an analog sound electric signal;

when the interactive music tag reading device performs output control on the interactive music tag, inserting a control signal into the wireless energy; and

when the interactive music tag device receives the wireless energy through the LC resonant circuit of the interactive music tag:

decoding the wireless energy to decode the control signal;

and controlling an output state of the analog optical signal according to the control signal.

11. The method of claim 10, wherein the output state comprises play, stop, fast forward, fast reverse, pause, double speed play.

12. The method of claim 10, wherein the LC resonant circuit comprises:

an inductor having a first end and a second end, wherein the first end of the inductor is coupled to the first end of the LC resonant circuit, and the second end of the inductor is coupled to the second end of the LC resonant circuit; and

and the capacitor comprises a first end and a second end, wherein the first end of the capacitor is coupled with the first end of the LC resonance circuit, and the second end of the capacitor is coupled with the second end of the LC resonance circuit.

Images