TWI556157B - Method and system for playing audio data - Google Patents

Description

Sound data playing method and system thereof

The invention relates to a method for playing sound data, in particular to a method for playing sound data using a wireless radio frequency tag transmission technology.

Radio Frequency Identification (RFID) is a wireless communication technology that transmits data from a tag attached to an item by translating the signal into a radio frequency electromagnetic field. According to the power supply inside the radio frequency tag, the radio frequency tag can be divided into passive and active. The integrated circuit inside the passive radio frequency tag can be driven by the electromagnetic wave emitted by the reader. When the signal received by the tag is strong enough, the tag can send data to the reader. The active tag can actively transmit the internal tag memory data to the reader at any time by internal power.

In daily life, wireless radio frequency tags have been widely used, for example, reading commodity barcodes at checkout to calculate purchase amount, reading commodity barcodes during storage to confirm inventory situation, and reading commodity barcodes when goods are shipped or warehousing Confirm logistics situation, baggage classification, radio frequency setting on personnel or items and use for inventory and asset tracking and management, banknote and product anti-counterfeiting technology, and even implanted in the human body as an individual's identity card.

However, the data transmitted by the current radio frequency tag does not contain time-related information, and even the time information transmitted by the radio frequency tag is used to control the sound playing device to play the sound data at a specified playing time point, or to make a difference. Sound data can be played back simultaneously between the sound playback devices.

In view of this, the present invention provides a method and system for playing sound data.

In a first embodiment of the sound data playing method, the sound data playing method includes defining a time information corresponding to a playing time point of a sound data, and sending the time information to the first RF circuit to a second The RF circuit receives the time information and transmits the time information to the playing circuit coupled to the second RF circuit, and the playing circuit plays the sound data at the playing time point corresponding to the time information.

In a first embodiment of the sound data playing system, the sound data playing system includes a first RF circuit, a second RF circuit, and a playing circuit coupled to the second RF circuit, where the first RF circuit transmits time information. The information corresponds to the playing time point of the sound data, and the second RF circuit receives the time information sent by the first RF circuit, and the playing circuit plays the sound data at the playing time point corresponding to the time information.

In a second embodiment of the sound data playing method, the sound data playing method includes defining a time information corresponding to a playing time point of a sound data, storing the time information by using a radio frequency tag, and using a first RF circuit. The radio frequency tag is read to receive the time information, and the first radio frequency circuit transmits the time information to the playing circuit coupled to one of the radio frequency circuits, and the playing circuit plays the sound data according to the playing time point corresponding to the time information.

In a second embodiment of the sound data playing system, the sound data playing system comprises a radio frequency tag, a first radio frequency circuit and a playing circuit coupled to the first radio frequency circuit, and the radio frequency tag stores time information, and the time information corresponds to the playing of the sound data. At the time point, the first RF circuit reads the RF tag and receives the time information, the playback circuit receives the time information, and the playback circuit plays the sound data according to the playback time point corresponding to the time information.

In a third embodiment of the sound data playing method, a piece of information is sent by a first RF circuit, the bar information corresponds to a playing position of the sound data, and the second RF circuit receives the bar information and transmits the bar information. To the playback circuit of one of the second RF circuits, the playback circuit plays the sound data at the playback position corresponding to the section information.

In summary, the sound data playing method according to the present invention can transmit time information by using a radio frequency circuit, and the time information corresponds to a playing time point of a sound data, so that the playing circuit for receiving the time information corresponds to the time information. Play the sound data at any time point of play, and even make the sound data play synchronously between different playback circuits, thus improving the convenience of life.

1 is a functional block diagram of a first embodiment of a sound data playing system according to the present invention. Referring to FIG. 1, the sound data playing system includes two sound playing devices (for convenience of description, the two sound playing devices respectively The first sound playback device 10 and the second sound playback device 20). The first sound playback device 10 includes a first RF circuit 11, a first playback circuit 12, and a first control circuit 13. The second sound playback device 20 includes a second RF circuit 21 and a second playback circuit 22.

The first control circuit 13 is coupled between the first playback circuit 12 and the first RF circuit 11, the second RF circuit 21 is coupled to the second playback circuit 22, and the first RF circuit 11 is coupled to the second RF circuit 21. A control circuit 13 and the second playback circuit 22 are between the first playback circuit 12 and the second playback circuit 22.

The first RF circuit 11 sends a time information T, and the time information T corresponds to a playback time point of a sound data. For example, the sound data is a music with a length of 5 minutes, and the time information T represents a sound. The data is at any playback time point within 5 minutes, for example, 0th, 2nd, 42nd, 1st, 2nd, 2nd, 22nd, etc.; the second RF circuit 21 receives the first RF circuit 11 to send The time information T, the second RF circuit 21 transmits the time information T to the second playing circuit 22. After receiving the time information T, the second playing circuit 22 stores the sound data in the second playing circuit 22, and the second playing circuit 22 playing the sound data with the time information T corresponding to the playing time point of the sound data, wherein the playing time point corresponding to the time information T can be 42 seconds, and the second playing circuit 22 starts playing the sound in the 42nd second of the sound data. The data (ie, the second playback circuit 22 does not play the sound data before the 42nd second).

In some implementations, the time information T can be a preset value, and the preset time information T is used to control the second playing circuit 22 to start playing the sound data at the preset playing time point of the sound data. In practice, the first control circuit 13 can be a central processing unit, a microprocessor or a microcontroller, and the first control circuit 13 can be controlled by software or firmware to generate time information T; or the time information T can be advanced. It is stored in the memory and transmitted to the first RF circuit 11 by the first control circuit 13.

In some implementations, the time information T is used to play the current playing time point in the first playing circuit 12 corresponding to the sound data, that is, the sound data stored in the first playing circuit 12 is sent in the first RF circuit 11. Before the time information T, the first playing circuit 12 is playing the sound data, the first control circuit 13 plays the current playing time point according to the sound data to generate the time information T, and the first control circuit 13 detects the sound data in the first playing circuit 12 Playing the current playing time point, and playing the current playing time point according to the sound data to generate the time information T, that is, the first control circuit 13 can instantly generate the time information T corresponding to the playing time point of the sound information, For example, when the sound data is played to the second second, the first control circuit 13 can generate the time information T corresponding to the second second and transmit to the first radio frequency circuit 11; at this time, if the second radio frequency circuit 21 is located in the communication range of the first RF circuit 11, and the second RF circuit 21 receives the time information T corresponding to the second second, so that the second playback circuit 22 is in the second second of the sound data. Start playing sound data. In this way, the second playing circuit 22 and the first playing circuit 12 can synchronously play the sound data at the same playing time point.

In practice, the first RF circuit 11 includes a first antenna 111 and a modulation module 112. The modulation module 112 performs amplitude modulation or frequency modulation processing on the time information T generated by the first control circuit 13, and the first RF circuit 11 The time information T belonging to the radio frequency signal is transmitted by the first antenna 111, and the radio frequency of the time information T transmitted by the first antenna 111 is less than 30 MHz. The second RF circuit 21 includes a second antenna 211 and a demodulation module 212. The second RF circuit 21 receives the time information T belonging to the RF signal by the second antenna 211, and the demodulation module 212 decodes the time information T. The time information T before the amplitude modulation or frequency modulation is obtained, and the time information T is transmitted to the second playback circuit 22.

The first control circuit 13 includes a counter, and the counter counts the sound data in the current playback time point in the first playback circuit 12 to generate an incremented or decremented count value as the time information T. In detail, the counter can be in the first A playback circuit 12 starts counting the sound data and then counts it at a fixed frequency to generate a count value, for example, incrementing or decrementing every 64 ms. After receiving the time information T indicated by the count value, the second playing circuit 22 can play the sound data according to the playing time of the sound data corresponding to the count value. In detail, the second sound playing device 20 can further The second playing circuit 22 can select a corresponding music piece to play according to the count value by using a plurality of switches or a plurality of multiplexers. For example, if the count value of 5 is corresponding to the music piece whose playback time point is the 5th second, the second playback circuit 22 selects the music piece corresponding to the 5th second to start playing after receiving the time information T. Sound data.

In the application, taking the sound data as the music as an example, the designer of the sound data playing system can store the same music in the first playing circuit 12 and the second playing circuit 22, so that the second playing circuit 22 receives the time information T. The same music can be played in synchronization with the first playing circuit 12, and the first playing circuit 12 and the second playing circuit 22 can stop playing at the same time when the music ends; or the first playing circuit 12 and the second playing circuit 22 can be separately stored. The music having the same melody but different vocals enables the second playing circuit 22 to play the music with the same melody synchronously with the first playing circuit 12 after receiving the time information T.

2 is a functional block diagram of a second embodiment of a sound data playing system according to the present invention. Referring to FIG. 2, the second embodiment differs from the first embodiment in that the sound data playing system further includes a radio frequency tag 30. The first radio frequency circuit 11 is coupled between the radio frequency tag 30 and the first play circuit 12, and the output end of the first radio frequency circuit 11 is coupled to the input end of the first play circuit 12. .

The radio frequency tag 30 is used to store time information (referred to as first time information T1 for convenience of description), and the pre-stored first time information T1 corresponds to the playing time point of the sound data, and the first radio frequency circuit 11 reads the radio frequency tag. Receiving the first time information T1, the first RF circuit 11 transmits the first time information T1 to the first playing circuit 12, and after the playing circuit 12 receives the first time information T1, the first playing circuit 12 according to the first time information T1 The sound data is played at the playback time point of the corresponding sound data, that is, the first playback circuit 12 can start playing the sound data from any starting position of the sound data.

After the first playing circuit 12 starts playing the sound data according to the first time information T1, the first control circuit 13 generates another time information according to the sound data in the first playing circuit 12 to play the current playing time point (for convenience of description, The other time information is referred to as the second time information T2), the first RF circuit 11 transmits the second time information T2 to the second RF circuit 21, and the second RF circuit 21 transmits the second time information T2 to the second playback circuit 22. The second playing circuit 22 can play the sound data according to the playing time point of the sound data corresponding to the second time information T2.

Based on this, it is assumed that the playback time point corresponding to the first time information T1 is the 0th second, and the playback time point corresponding to the second time information T2 is the 20th second, and the first playback circuit 12 starts playing the sound data from the 0th second of the sound data. The second playback circuit 22 starts playing the sound data from the 20th second of the sound data. In other words, starting from the 20th second of the sound data, the second playback circuit 22 plays the sound data in synchronization with the first playback circuit 12.

3 is a flow chart of the first embodiment of the sound data playing method according to the present invention. Referring to FIG. 1 and FIG. 3 simultaneously, first, a time information is defined (step S10), and the time information corresponds to a sound. At the time of playing the data, the first RF circuit 11 transmits the time information T (step S11), the second RF circuit 21 receives the time information T (step S12), and the second RF circuit 21 transmits the time information T to the second playback. The circuit 22 (step S13) causes the second playback circuit 22 to play the sound data at the playback time point of the sound data corresponding to the time information T (step S14). The radio frequency of the time information sent by the first radio frequency circuit 11 is less than 30 MHz.

In some implementations, the time information T is used to play the current playing time point in the first playing circuit 12 corresponding to the sound data. Therefore, before performing step S11, the sound data is counted and played in the first playing circuit 12 to play the current playing time. The time point is used to generate the count value as the time information T, so that the second playing circuit 22 can play the sound data in synchronization with the first playing circuit 12.

4 is a flow chart of a second embodiment of a method for playing sound data according to the present invention. Referring to FIG. 2 and FIG. 4 simultaneously, a time information is defined, which is referred to as first time information T1 (step S20). The first time information T1 corresponds to the playing time point of the sound data, and stores the first time information T1 with the radio frequency tag 30 (step S21), and reads the radio frequency tag by the first radio frequency circuit 11 to receive the first time information T1 (step S22). The first radio frequency circuit 11 transmits the first time information T1 to the first playing circuit 12 (step S23), so that the first playing circuit 12 plays the sound data according to the playing time point of the sound data corresponding to the first time information T1 (step S24).

In some implementations, the first time information T1 corresponds to the sound data in the first playing circuit 12 to play the current playing time point. Therefore, after performing step S24, the counting sound data is played in the first playing circuit 12. The playback time point is used to generate the count value as the second time information T2 (step S25), the first radio frequency circuit 11 transmits the second time information T2 (step S26), and the second radio frequency circuit 21 receives the second time information T2 ( Step S27), the second RF circuit 21 transmits the second time information T2 to the second playing circuit 22 (step S28), so that the second playing circuit 22 is based on the sound data corresponding to the second time information T2 in the first playing circuit 12. The current playback time point is played to play the sound material (step S29).

FIG. 5 is a flowchart of a third embodiment of a method for playing sound data according to the present invention. Referring to FIG. 1 and FIG. 5 simultaneously, in the embodiment, the sound information to be played includes a plurality of sections, each section. Contains notes, rests, accent marks, or a combination of the above. Therefore, the first RF circuit 11 sends a measure of information (step S30), and the measure information can be a code, and the code can correspond to the track, note, rest, diacritical mark or the foregoing of the specified measure of the sound information. a combination of items, that is, the bar information may correspond to one of the sound information playback positions; and the second RF circuit 21 receives the bar information (step S31), and the second RF circuit 21 transmits the bar information to the second play circuit. 22 (step S32), the second playback circuit 22 plays the sound data at the playback position corresponding to the measure information (step S33). The bar information sent by the first RF circuit 11 is an RF signal, and the RF frequency is less than 30 MHz.

In this embodiment, before performing step S33, the sound data playing method further includes comparing a plurality of measures of the bar information and the sound data to obtain a play position corresponding to the bar information, for example, taking the bar information as a code as an example. The plurality of bars in the sound information correspond to different codes, and respectively compare the code corresponding to the bar information with the code corresponding to each bar to obtain the play position corresponding to the bar information.

In some implementations, the bar information corresponds to the sound data in the first playing circuit 12 to play the current playing position. Therefore, before performing step S30, the sound information can be counted in the first playing circuit 12 to play the current bar. The code corresponding to the bar information is generated, so that the second playing circuit 22 and the first playing circuit 12 can play the sound data in synchronization.

In summary, the sound data playing method according to the present invention can transmit time information by using a radio frequency circuit, and the time information corresponds to a playing time point of a sound data, so that the playing circuit for receiving the time information corresponds to the time information. Play the sound data at any time point of play, and even make the sound data play synchronously between different playback circuits, thus improving the convenience of life.

The present invention has been disclosed in the above embodiments, and it is not intended to limit the present invention. Any one of ordinary skill in the art can make some modifications and refinements without departing from the spirit and scope of the present invention. The scope of the invention is defined by the scope of the appended patent application.

10‧‧‧First sound playback device
11‧‧‧First RF circuit
111‧‧‧Antenna
112‧‧‧Modulation module
12‧‧‧First playback circuit
13‧‧‧First control circuit
20‧‧‧Second sound playback device
21‧‧‧Second RF circuit
211‧‧‧second antenna
212‧‧‧Demodulation Module
22‧‧‧Second playback circuit
30‧‧‧RF tags
T‧‧‧Time Information
T1‧‧‧First Time Information
T2‧‧‧Second time information step S10‧‧‧Define a time information step S11‧‧‧Send time information with the first RF circuit Step S12‧‧‧ Receive time information with the second RF circuit Step S13‧‧‧ Second The radio frequency circuit transmits the time information to the second playing circuit. Step S14‧‧ The second playing circuit plays the sound data at the playing time point of the sound data corresponding to the time information. Step S20‧‧ Define the first time information step S21‧‧ The first time information is stored by the radio frequency tag. The step S22‧‧ receives the first time information by reading the radio frequency tag by the first radio frequency circuit. Step S23‧‧ The first radio frequency circuit transmits the first time information to the first playing circuit step S24 ‧‧‧ The first playing circuit plays the sound data according to the playing time point of the sound data corresponding to the first time information. Step S25‧‧ ‧ Counting the sound data to play the current playing time point in the first playing circuit to generate the counting value The second time information step S26‧‧ is sent by the first RF circuit with the second time information step S27‧‧‧ connected by the second RF circuit The second time information step S28‧‧ The second radio frequency circuit transmits the second time information to the second playing circuit. Step S29‧‧ The second playing circuit plays the first playing circuit according to the sound data corresponding to the second time information The current playing time point to play the sound data step S30‧‧‧ sends the bar information in the first radio frequency circuit. Step S31‧‧ ‧ receives the bar information in the second radio frequency circuit. Step S32‧‧ The second radio frequency circuit transmits the bar information to the Second playback circuit step S33‧‧‧ The second playback circuit plays the sound data with the playback position of the sound data corresponding to the section information

[Fig. 1] is a functional block diagram of a first embodiment of a sound material playing system according to the present invention. [Fig. 2] is a functional block diagram of a second embodiment of the sound data playing system according to the present invention. [Fig. 3] is a flow chart of the first embodiment of the sound material playing method according to the present invention. [Fig. 4] is a flow chart showing a second embodiment of the sound material playing method according to the present invention. [Fig. 5] is a flow chart showing a third embodiment of the sound material playing method according to the present invention.

Step S10‧‧‧Define a time information

Step S11‧‧‧ Send time information with the first RF circuit

Step S12‧‧‧ Receive time information with the second RF circuit

Step S13‧‧‧ The second RF circuit transmits time information to the second playback circuit

Step S14‧‧ The second playing circuit plays the sound data at the playing time point of the sound data corresponding to the time information

Claims (13)

A method for playing a sound data, comprising: playing a sound data in a first playing circuit; transmitting a time information to a second RF circuit by one of the first RF circuits coupled to the first playing circuit, the time information corresponding to The sound data is played at a current playback time point; and the sound data is played by the second playback circuit coupled to the second RF circuit at the playback time point corresponding to the time information. The sound data playing method of claim 1, further comprising: counting the sound data to play the current playing time point in the first playing circuit to generate a count value as the time information. A method for playing a sound data, comprising: defining a time information corresponding to a time point of playing a sound data; storing the time information by using a radio frequency tag; and receiving the time by reading the radio frequency tag by a first radio frequency circuit Information, and transmitting the time information to a first playing circuit coupled to the radio frequency circuit; the first playing circuit plays the sound data according to the playing time point corresponding to the time information; sending the first radio frequency circuit Another time information, the other time information is corresponding to the sound data in the first playing circuit playing the current playing time point; receiving the other time information by a second RF circuit, and transmitting the other time information to The second playing circuit is coupled to one of the second RF circuits; and the sound data is played by the second playing circuit according to the other time information. The method for playing a sound data according to claim 1 or 3, wherein the radio frequency of the time information transmitted by the first radio frequency circuit is less than 30 MHz. The sound data playing method of claim 3, further comprising: counting the sound data to play the current playing time point in the first playing circuit to generate a count value as the other time information. The method of playing a sound data according to claim 3, wherein in the step of playing the sound material by the second playing circuit according to the other time information, the first playing circuit plays the sound in synchronization with the second playing circuit Sound data. A sound data playing system includes: a first playing circuit for playing a sound data; a first RF circuit coupled to the first playing circuit for transmitting a time information, the time information corresponding to the sound data The second playback circuit is coupled to the second RF circuit, and the second playback circuit is coupled to the second playback circuit. The sound data is played at the playback time point corresponding to the time information. The sound data playing system of claim 7, further comprising a control circuit coupled to the first playing circuit, wherein the control circuit counts the sound data in the first playing circuit to play the current playing time point to generate a count value. Take this time information. A sound data playing system includes: a radio frequency tag for storing time information, wherein the time information corresponds to a time point of playing a sound data; a first radio frequency circuit for reading the radio frequency tag to receive the time information, and the first radio frequency circuit further transmitting another time information; a first playing circuit coupled to the first radio frequency circuit for receiving The time information is that the first playing circuit plays the sound data according to the playing time point corresponding to the time information; a second RF circuit is configured to receive the other time information, and the other time information corresponds to the sound data. Playing the current playback time point in the first playback circuit; and a second playback circuit coupled to the second RF circuit for playing the sound data according to the other time information. The sound data playing system of claim 7 or 9, wherein the radio frequency of the time information sent by the first radio frequency circuit is less than 30 MHz. A sound data playing method is adapted to play a sound information, the sound data playing method comprises: playing the sound data in a first playing circuit; sending a small piece of information in a first RF circuit, wherein the bar information corresponds to the sound data Playing the current playback position of the first playback circuit; receiving the bar information by a second RF circuit, and transmitting the bar information to a second playback circuit coupled to the second RF circuit; The second playing circuit plays the sound data at the playing position corresponding to the bar information. The sound data playing method of claim 11, wherein the sound data comprises a plurality of bars, and the sound data playing method further comprises: comparing the bar information to the bars of the sound data to obtain the bar information. The playback position. The sound data playing method of claim 11, wherein the radio frequency of the bar information sent by the first radio frequency circuit is less than 30 MHz.