Light emitting diode circuit with parallel sequencing function, circuit package and light string

Abstract

The invention discloses a light emitting diode circuit with a parallel sequencing function, a circuit package and a light string. The light emitting diode circuit comprises an internal resistor, an analog / digital conversion circuit, a driving circuit and a current source. The internal resistor is provided with a first end and a second end, and the first end and the second end are connected to the input end and the output end of the power line respectively. The input end is coupled with the controller to receive a voltage signal generated by the controller, and provides an internal voltage at the first end or the second end of the internal resistor. The analog / digital conversion circuit receives an internal voltage. The driving circuit receives a voltage signal from the outside through a power line, and the current source is coupled with the driving circuit and the analog / digital conversion circuit to provide a current path. When the driving circuit executes a sequencing mode based on the specific signal, the analog / digital conversion circuit performs analog / digital conversion on the internal voltage to generate a digital sequence number, and the driving circuit stores the digital sequence number, so that the light emitting diode circuit is simple in structure and convenient to assemble, produce and use.

Description

Technical Field

[0001] The present invention relates to a light emitting diode circuit, a light emitting diode circuit package and a light emitting diode light string, and in particular to a light emitting diode circuit, a light emitting diode circuit package and a light emitting diode light string with a parallel sequencing function. Background Art

[0002] Due to their advantages, such as high luminous efficiency, low power consumption, long life, fast response speed, and high reliability, light-emitting diodes (LEDs) have been widely used in lighting fixtures and decorative lighting applications, such as Christmas tree lighting and sports shoe lighting effects, via series, parallel, or series-parallel connections in light bars or light strings.

[0003] Taking festive lighting as an example, a complete LED lamp essentially consists of an LED light string (consisting of multiple lamps) and a driver unit that operates the lamps. The driver unit is electrically connected to the light string and provides the lamps with the required power and control signals containing lighting data. This control, either point-by-point or synchronized, allows for a variety of lighting effects and variations.

[0004] In existing technology, to drive the LEDs of an LED light string to emit light in a variety of ways, the LEDs have different address sequence data. The LEDs receive a light signal containing light-emitting data and address data. If the address sequence data of the LED is the same as the address data of the light signal, the LED emits light according to the light data of the light signal. If the address sequence data of the LED is different from the address data of the light signal, the LED skips the light data of the light signal.

[0005] Currently, sequencing the LEDs in LED light strings is often complex or difficult. For example, before the LEDs are assembled into a LED light string, different address sequence data must be recorded for each LED. The LEDs are then positioned and assembled into the LED light string according to the address sequence data. If the LEDs are not positioned in sequence according to the address sequence data, the LEDs' diverse lighting patterns cannot be achieved correctly.

[0006] Furthermore, current LED light strings employing a carrier-type parallel string with low-voltage (e.g., 5V) DC power require sequencing of each LED in the string to achieve carrier control, allowing for subsequent carrier-controlled lighting patterns. However, since low-voltage LED string currents are susceptible to significant disturbances, unstable currents can lead to unstable voltage signals, preventing the control IC within the LED light from accurately identifying the signal.

[0007] Therefore, how to design an LED circuit, LED circuit package, and LED light string with parallel sequencing function to solve the problems and technical bottlenecks of the existing technology is an important topic studied by the inventors of this case. Summary of the Invention

[0008] One object of the present invention is to provide a light-emitting diode circuit with a parallel sequencing function. The light-emitting diode circuit with a parallel sequencing function includes an internal resistor, an analog / digital conversion circuit, a driving circuit, and a current source. The internal resistor has a first end and a second end, the first end is connected to the input end of the power line, and the second end is connected to the output end of the power line. The input end is coupled to a controller to receive a voltage signal generated by the controller, and an internal voltage is provided at the first end or the second end of the internal resistor. The analog / digital conversion circuit is coupled to the power line to receive the internal voltage. The driving circuit is coupled to the power line and the analog / digital conversion circuit, and receives a voltage signal from the outside through the power line. The current source is coupled to the driving circuit and the analog / digital conversion circuit to provide a current path for the light-emitting diode circuit. When the driving circuit executes a sequencing mode based on a specific signal, the analog / digital conversion circuit performs analog / digital conversion on the internal voltage to generate a digital serial number, and the driving circuit stores the digital serial number.

[0009] In one embodiment, after the sequencing mode is completed, the driving circuit executes the working mode. The driving circuit receives a lighting command containing serial number information and lighting information from an external controller via a power line. When the driving circuit determines that the digital serial number matches the serial number information, the driving circuit controls the corresponding light-emitting diode to perform a specific lighting behavior based on the lighting information.

[0010] In one embodiment, the LED circuit with parallel sequencing function further includes a voltage regulator circuit coupled to a power line to receive an internal voltage and convert the internal voltage into a supply voltage with a specific voltage value to provide a voltage required for the operation of the analog / digital conversion circuit.

[0011] In one embodiment, the voltage signal is a direct current voltage, a pulse voltage, or a carrier voltage.

[0012] In one embodiment, the serial number information and the light emitting information are both digital values ​​having multiple bits.

[0013] In one embodiment, the lighting information is followed by the sequence number information to form a lighting command; or the sequence number information is followed by the lighting information to form a lighting command.

[0014] In one embodiment, the internal voltage is used to provide a voltage required for the operation of the driving circuit.

[0015] In one embodiment, the controller generates a specific signal which is received via the power line, and the specific signal is a specific code.

[0016] Another object of the present invention is to provide an LED circuit package with parallel sequencing functionality. The LED circuit package with parallel sequencing functionality includes two power pins, at least one LED, the LED circuit described above, and a package. The two power pins are configured to receive voltage signals. The at least one LED is coupled to the two power pins. The LED circuit couples the two power pins to the at least one LED and powers the LED circuit via the voltage signals received by the power pins. The package encapsulates the LED circuit, the at least one LED, and a portion of the two power pins, with the remaining portions of the two power pins exposed outside the package.

[0017] Another object of the present invention is to provide an LED light string with parallel sequencing functionality. The LED light string with parallel sequencing functionality includes a plurality of LED circuits. The plurality of LED circuits are electrically connected via a power line to form a parallel configuration. Each LED circuit includes an internal resistor, an analog / digital conversion circuit, a driver circuit, and a current source. The internal resistor has a first end and a second end, the first end being connected to the input end of the power line, and the second end being connected to the output end of the power line. The input end of a first LED circuit is coupled to a controller to receive a voltage signal generated by the controller, and the first end or the second end of the internal resistor of the first LED circuit provides an internal voltage. The input ends of the remaining LED circuits receive the internal voltage provided by the previous LED circuit or a voltage obtained by passing the internal voltage through the internal resistor. The analog / digital conversion circuit is coupled to the power line to receive the internal voltage. The driver circuit is coupled to the power line and the analog / digital conversion circuit and receives a voltage signal from an external source via the power line. The current source is coupled to the driver circuit and the analog / digital conversion circuit to provide a circuit path for the LED circuit. The internal resistors of the plurality of light-emitting diode circuits are connected in series via a power line. When each driving circuit executes a sequencing mode based on a specific signal, each analog / digital conversion circuit performs analog / digital conversion on an internal voltage to generate a digital sequence number, and each driving circuit stores the digital sequence number.

[0018] In one embodiment, after the sequencing mode is completed, each driving circuit executes the working mode. Each driving circuit receives a lighting command containing serial number information and lighting information from an external controller via a power line. When each driving circuit determines that the digital serial number matches the serial number information, each driving circuit controls the corresponding light-emitting diode to perform a specific lighting behavior based on the lighting information.

[0019] In one embodiment, each of the LED circuits further includes a voltage regulator circuit coupled to the power line to receive an internal voltage and convert the internal voltage into a supply voltage having a specific voltage value to provide a voltage required for operating the analog / digital conversion circuit.

[0020] In one embodiment, the voltage signal is a direct current voltage, a pulse voltage, or a carrier voltage.

[0021] In one embodiment, the serial number information and the light emitting information are both digital values ​​having multiple bits.

[0022] In one embodiment, the lighting information is followed by the sequence number information to form a lighting command; or the sequence number information is followed by the lighting information to form a lighting command.

[0023] In one embodiment, the internal voltage is used to provide a voltage required for the operation of the driving circuit.

[0024] In one embodiment, the controller generates a specific signal which is received via the power line, and the specific signal is a specific code.

[0025] In one embodiment, the internal voltage of the LED circuit electrically connected to the input end of the power line is greater than the internal voltage of the LED circuit electrically connected to the input end of the power line.

[0026] Thus, the LED circuit and LED light string with parallel sequencing function proposed in the present invention have the following features and advantages: 1. The LED light string of the present invention does not require the use of additional external resistors, switches, or constant current circuits or devices, which can make the light string structure simple; 2. The LED circuit of the present invention sets both the internal resistor and the current source in the control IC, which makes the LED light string structure simple and convenient for assembly, production and use; 3. The present invention adopts a parallel carrier design, which does not require additional wiring to design signal transmission lines, and the control IC also does not require additional contacts to receive specific voltage signals, making control simple and intuitive.

[0027] In order to further understand the techniques, means and effects adopted by the present invention to achieve the intended purpose, please refer to the following detailed description of the present invention and the accompanying drawings. It is believed that the purpose, characteristics and features of the present invention can be understood in depth and in detail. However, the accompanying drawings are provided for reference and illustration only and are not intended to limit the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1A : is a circuit block diagram of a first embodiment of a light emitting diode circuit with a parallel sequencing function according to the present invention.

[0029] Figure 1B : is a circuit block diagram of a second embodiment of a light emitting diode circuit with a parallel sequencing function according to the present invention.

[0030] Figure 2 : is a circuit block diagram of a light emitting diode lamp string with parallel sequencing function according to the present invention.

[0031] Figure 3 : It is a voltage diagram of the light emitting diode lamp string with parallel sequencing function of the present invention.

[0032] Figure 4 : It is a three-dimensional schematic diagram of the light emitting diode circuit package with parallel sequencing function of the present invention.

[0033] Description of symbols in the accompanying drawings:

[0034] 10: light emitting diode circuit;

[0035] 10_1~10_N: light emitting diode circuit;

[0036] 100: power cord;

[0037] 101: light emitting diode;

[0038] 102: driving circuit;

[0039] 103: voltage stabilizing circuit;

[0040] 104: analog / digital conversion circuit;

[0041] 105: current source;

[0042] 50: controller;

[0043] R S : internal resistance;

[0044] R S1 ,R S2 ,R SN : internal resistance;

[0045] V+(in): input terminal;

[0046] V+(in1), V+(in2), V+(inN): input terminals;

[0047] V+(out): output terminal;

[0048] V+(out1), V+(out2), V+(outN): output terminals;

[0049] V: internal voltage;

[0050] V1, V2, … V N : internal voltage;

[0051] Vcc: supply voltage;

[0052] Ds: digital serial number;

[0053] 20: package body;

[0054] Vdd, Vss: power supply pins. DETAILED DESCRIPTION

[0055] The technical content and detailed description of the present invention are described below with reference to the accompanying drawings.

[0056] The following describes the implementation of the present invention using specific embodiments. Those skilled in the art will readily understand the other advantages and benefits of the present invention from the disclosure herein. The present invention may also be implemented or applied through various other specific embodiments, and the details herein may be modified and altered based on different perspectives and applications without departing from the spirit of the present invention.

[0057] It should be noted that the structures, proportions, sizes, and numbers of components illustrated in the drawings of this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with the art. They are not intended to limit the conditions under which the present invention may be implemented, and therefore have no substantive technical significance. Any structural modifications, changes in proportions, or adjustments in size, without affecting the efficacy and objectives that can be achieved by the present invention, should fall within the scope of the technical contents disclosed by the present invention.

[0058] See Figure 1A FIG. 1 is a block diagram of a first embodiment of a light emitting diode circuit with a parallel sequencing function according to the present invention. The light emitting diode circuit 10 may be in the form of an integrated circuit (IC), that is, the light emitting diode circuit is a control IC. The light emitting diode circuit 10 with a parallel sequencing function includes an internal resistor R S , an analog-to-digital conversion (ADC) circuit 104 , a driving circuit 102 and a current source 105 .

[0059] Internal resistance R SThe LED circuit 100 has a first end and a second end, wherein the first end is connected to an input end V+(in) of a power line 100, and the second end is connected to an output end V+(out) of the power line 100. The power line 100 is a power path for the LED circuit 10 to receive a voltage signal or for multiple LED circuits 10 to carry the internal voltage of the previous LED circuit 10, which will be described in detail later. In this embodiment, the input end V+(in) receives a controller 50 (i.e., an external controller) and receives a voltage signal generated by the controller 50, and the voltage signal is transmitted through the internal resistor R S The voltage drop formed across the internal resistor R S The second end of the output terminal V+(out) provides an internal voltage V. That is, if the voltage signal is 5 volts and the internal resistor R S The voltage drop formed is 0.2 volts, so the internal voltage V will be 4.8 volts. S It can also be connected to the negative voltage input and output ends of the power line 100, and the technical spirit of the present invention can also be realized.

[0060] The analog-to-digital conversion circuit 104 is coupled to the power line 100 to receive the internal voltage V. When the driver circuit 102 is in sequencing mode, the analog-to-digital conversion circuit 104 performs analog-to-digital conversion on the internal voltage V to generate a digital sequence number Ds. For example, if the internal voltage V is 4.8 volts, the analog-to-digital conversion circuit 104 receives this analog voltage and converts it into a digital value of 00111110 through analog-to-digital conversion. This digital value serves as the digital sequence number Ds. Alternatively, if the internal voltage V is 4.6 volts, the analog-to-digital conversion circuit 104 receives this analog voltage and converts it into a digital value of 00111101 through analog-to-digital conversion. This digital value serves as the digital sequence number Ds. Alternatively, if the internal voltage V is 4.4 volts, the analog / digital conversion circuit 104 receives this analog voltage and converts the 4.4 volts into a digital value of 00111100 via analog / digital conversion. This digital value is the digital sequence number Ds. Therefore, the analog / digital conversion circuit 104 converts different digital values, i.e., different digital sequences Ds, according to the magnitude of the received internal voltage V.

[0061] The driving circuit 102 is coupled to the power line 100 and the analog / digital conversion circuit 104. In the sequencing mode, the driving circuit 102 receives the digital serial number Ds, which means that the digital serial number Ds generated by the analog / digital conversion circuit 104 is stored in the driving circuit 102 as its own independent serial number.

[0062] Furthermore, the driver circuit 102 further receives a voltage signal from the outside via the power line 100, which can be received at the input terminal V+(in). Specifically, the voltage signal is provided by the external controller 50, meaning that the LED circuit is externally coupled to the controller 50 and receives the voltage signal provided by the controller 50. The voltage signal can be, for example but not limited to, a DC voltage, such as a DC voltage between 4V and 12V, or a pulse voltage or carrier voltage.

[0063] Furthermore, the controller 50 further provides a lighting command, wherein the lighting command includes sequence information and lighting information. In one embodiment, the sequence information and lighting information are each a multi-bit digital value. For example, the sequence information is a digital value of 00111101, and the lighting information is a digital value of 0010, but this is not intended to limit the present invention. Furthermore, the lighting information may be followed by the sequence information to form a lighting command, or the sequence information may be followed by the lighting information to form a lighting command. For example, with the sequence information being a digital value of 00111101 and the lighting information being a digital value of 0010, the lighting command may be composed of the lighting information followed by the sequence information, i.e., the lighting command is "001111010010," or the lighting command may be composed of the sequence information followed by the lighting information, i.e., the lighting command is "001000111101." Of course, an identification bit (group) may be inserted between the two to distinguish them. Therefore, the lighting command is used to control the specific lighting behavior of the LED corresponding to a specified LED circuit.

[0064] For example, a light-emitting command of "001111010010" can indicate that the light-emitting diode corresponding to the light-emitting diode circuit with a digital sequence number or its own sequence number is "00111101" is controlled to have an "intermittent blinking" (the default light-emitting information 0010 is intermittent blinking). Similarly, a light-emitting command of "001111010010" can also indicate that the light-emitting diode corresponding to the light-emitting diode circuit with a digital sequence number or its own sequence number is "00111101" is controlled to have an "intermittent blinking" (the default light-emitting information 0010 is intermittent blinking).

[0065] Alternatively, a light-emitting command of "001100000011" may indicate that the light-emitting diode corresponding to the light-emitting diode circuit with a digital sequence number or its own sequence number is "00110000" is to be controlled to "flash at a high frequency" (the default light-emitting information 0011 is to flash at a high frequency). Similarly, a light-emitting command of "001100000011" may also indicate that the light-emitting diode corresponding to the light-emitting diode circuit with a digital sequence number or its own sequence number is "00110000" is to be controlled to "flash at a high frequency" (the default light-emitting information 0011 is to flash at a high frequency).

[0066] The current source 105 couples the driver circuit 102 and the analog / digital conversion circuit 104 to provide a current path for the LED circuit 10. In one embodiment, the current source 105 can be a constant current source, thereby maintaining the LED circuit 10 at a constant current output, such as, but not limited to, 10 mA. The current source 105 can be implemented using a constant current circuit or a current mirror circuit. The driver circuit 102 receives the internal voltage V, which can be used to maintain the voltage required for normal operation of the driver circuit 102.

[0067] Therefore, the driver circuit 102 receives a specific signal generated by the controller 50 and executes a sequencing mode. Specifically, the specific signal is a specific code generated by the controller 50 and received via the power line 100. When the driver circuit 102 receives the specific signal with the specific code, the sequencing mode is activated. In the sequencing mode, the analog / digital conversion circuit 104 performs an analog / digital conversion on the internal voltage V to generate a digital sequence number Ds. The driver circuit 102 then receives and stores the digital sequence number Ds, completing the sequencing mode.

[0068] After the sequencing mode is completed, the driver circuit 102 enters an operating mode. Specifically, the driver circuit 102 receives a lighting command containing sequence information and lighting information from the controller 50 via the power line 100. When the driver circuit 102 determines that the digital sequence number Ds matches the sequence information, the driver circuit 102 controls the corresponding LED 101 to perform a specific lighting behavior based on the lighting information. In the operating mode, when the driver circuit 102 determines that the stored digital sequence number Ds matches the sequence information in the received lighting command, the driver circuit 102 controls the corresponding LED 101 to perform a specific lighting behavior based on the lighting information. The corresponding LED 101 refers to the LED 101 that is driven and controlled by the driver circuit 102. Specifically, when the driver circuit 102 determines that the received sequence information matches its own, independent digital sequence number Ds, the driver circuit 102 controls the LED 101 to perform the specific lighting behavior based on the lighting information in the received lighting command. On the contrary, if the driving circuit 102 determines that the received serial number information does not match its own digital serial number Ds, it will not control the corresponding LED 101. As for the light control operation, please refer to the above description and will not be repeated here.

[0069] Incidentally, although the LED 101 is depicted within the LED circuit 10, this is merely for the purpose of illustrating the operational relationship with other circuit components. In reality, the LED 101 is externally connected to the LED circuit 10. The number of LEDs 101 can be, for example but not limited to, one (single color), two (red and green), three (three primary colors), four (three primary colors and white), etc., and can be increased or decreased based on actual needs. Figure 1A Each light emitting diode 101 includes an anode terminal and a cathode terminal, wherein the anode terminal receives a DC voltage to operate.

[0070] like Figure 1A As shown, the LED circuit with parallel sequencing function further includes a voltage regulator circuit 103, or a voltage adjustment (regulation) circuit. The voltage regulator circuit 103 is coupled to the power line 100, receives the internal voltage V, and converts the internal voltage V into a supply voltage Vcc having a specific voltage value (e.g., a 2.5V operating voltage). The supply voltage Vcc is provided to the analog / digital conversion circuit 104 to maintain the voltage required for normal operation of the analog / digital conversion circuit 104.

[0071] See Figure 1B , which is a circuit block diagram of a second embodiment of a light emitting diode circuit with a parallel sequencing function according to the present invention. Figure 1B The second embodiment shown is Figure 1A The biggest difference of the first embodiment shown is the internal resistance R S The location of the connection. Figure 1B In the second embodiment shown, the internal resistance R S The first end of is connected to the input end V+(in) of the power line 100, and the second end is connected to the output end V+(out) of the power line 100. In this embodiment, the input end V+(in) receives a voltage signal, that is, an internal voltage V, and the internal voltage V is connected to the internal resistor R S The voltage after (i.e. the internal voltage V minus the internal resistance R S Since the remaining circuit operations of the second embodiment are similar or identical to those of the first embodiment, they will not be described in detail here.

[0072] See Figure 2 As shown, it is a circuit block diagram of the light emitting diode lamp string with parallel sequencing function of the present invention. Figure 2 The LED light string shown includes Figure 1A or Figure 1BSeveral light-emitting diode circuits 10_1 to 10_N are shown. The light-emitting diode circuits 10_1 to 10_N are electrically connected through the power line 100 to form a parallel structure, and the light-emitting diode light string is powered by a voltage signal. The voltage signal is a DC voltage, a pulse voltage or a carrier voltage, but this is not intended to limit the present invention. As mentioned above, the light-emitting diode light string includes several light-emitting diode circuits 10_1 to 10_N, so each light-emitting diode circuit 10_1 to 10_N includes an internal resistor, an analog / digital conversion circuit, a driving circuit and a current source. Incidentally, Figure 2 The LED circuits 10_1 to 10_N shown are for simple illustration only and are not intended to represent their complete internal circuits. For details on their complete internal circuits, please refer to Figure 1A or Figure 1B shown.

[0073] by Figure 2 For example, the LED light string with parallel sequencing function includes a first LED circuit 10_1, a second LED circuit 10_2, ... and an Nth LED circuit 10_N. The first LED circuit 10_1 mainly includes a first internal resistor R S1 With the first current source I C1 The second light emitting diode circuit 10_2 mainly includes a second internal resistor R S2 With the second current source I C2 The Nth light emitting diode circuit 10_N mainly includes the Nth internal resistor R SN With the Nth current source I CN .

[0074] Internal resistance R S1 ,R S2 ,R SN is connected between the input and output ends of the power line 100, wherein the input end of the first one of the light emitting diode circuits 10_1 to 10_N (ie, the first light emitting diode circuit 10_1) receives a voltage signal, and the internal resistor R S1 The first terminal provides the internal voltage (see Figure 1B embodiment) or in the internal resistor R S1 The second terminal provides the internal voltage (see Figure 1A Furthermore, the input terminals of the remaining LED circuits 10_1 to 10_N (i.e., the second LED circuit 10_2 to the Nth LED circuit 10_N) receive the internal voltages V1, V2, ... V provided by the previous LED circuit 10_1 to 10_N, respectively. N (See Figure 1A), or the internal voltage V1, V2, ... V provided by the previous light emitting diode circuit 10_1 to 10_N N Through the internal resistor R S1 ,R S2 ,R SN The voltage after Figure 1B embodiment).

[0075] Cooperate Figure 1A For example, the first internal resistor R of the first light emitting diode circuit 10_1 S1 Connected between the input terminal V+(in1) and the output terminal V+(out1) of the power line 100, receiving a voltage signal, assuming it is 5 volts. S1 The resulting voltage drop (eg, 0.2 volts) provides a first internal voltage V1 of 4.8 volts at the output terminal V+(out1). Similarly, the second internal resistor R S2 It is connected between the input terminal V+(in2) and the output terminal V+(out2) of the power line 100, and receives the internal voltage provided by the previous LED circuit, that is, the first internal voltage V1 (i.e. 4.8V) provided by the first LED circuit 10_1. S2 The resulting voltage drop (eg, 0.2 volts) provides a second internal voltage V2 of 4.6 volts at the output terminal V+(out2). Similarly, the Nth internal resistor R SN It is connected between the input terminal V+(inN) and the output terminal V+(outN) of the power line 100, and receives the internal voltage provided by the previous LED circuit, that is, the N-1 internal voltage V provided by the N-1 LED circuit 10_N-1. N-1 (Assume N is 10, i.e. 3.2V). SN The resulting voltage drop (e.g., 0.2 volts) provides the Nth internal voltage V at the output terminal V+(outN). N =3.0V. This means that the first internal voltage V1 of the first LED circuit 10_1 is greater than the second internal voltage V2 of the second LED circuit 10_2, and so on. This means that the voltage generated by the preceding (upstream) LED circuit is greater than the internal voltage generated by the following (downstream) LED circuit (V1>V2>...>V N ). Thus, according to the generated internal voltages V1, V2, ..., V N The light emitting diode circuits 10_1 to 10_N are sequenced according to their sizes.

[0076] Therefore, the first analog / digital conversion circuit receives the first internal voltage V1 and performs analog / digital conversion on the first internal voltage V1 to generate a first digital serial number. For example, the first internal voltage V1 of 4.8 volts is converted into a digital value of 00111110 through analog / digital conversion, and this digital value is the first digital serial number. Similarly, the second analog / digital conversion circuit receives the second internal voltage V2 and performs analog / digital conversion on the second internal voltage V2 to generate a second digital serial number. For example, the second internal voltage V2 of 4.6 volts is converted into a digital value of 00111101 through analog / digital conversion, and this digital value is the second digital serial number. Similarly, the Nth analog / digital conversion circuit receives the Nth internal voltage V N , and for the Nth internal voltage V N Perform analog / digital conversion to generate the Nth digital number, for example, converting the Nth internal voltage V N After analog / digital conversion, the digital value 00110101 is converted into the digital value, which is the Nth digit serial number. The corresponding relationship between the internal voltage and the digital value (ie, the digital serial number) is as follows, but the present invention is not limited thereto.

[0077]

[0078]

[0079] See Figure 3 , which is a voltage diagram of the LED light string with parallel sequencing function of the present invention. Through the internal resistance R provided by each LED circuit 10_1 to 10_N S1 ,R S2 ,R SN The resulting voltage drop and the current source act in concert, causing the internal voltages V1, V2, ..., V N The present invention also utilizes the internal voltages V1, V2, ... V of each LED circuit 10_1 to 10_N. N The different characteristics serve as a basis for sequencing each LED circuit 10_1 - 10_N, so that each LED circuit 10_1 - 10_N has uniqueness in sequencing, thereby significantly improving the accuracy of LED light string sequencing.

[0080] Therefore, each driver circuit stores the digital sequence number Ds. Specifically, the first driver circuit of the first LED circuit 10_1 stores the digital sequence number "00111110," the second driver circuit of the second LED circuit 10_2 stores the digital sequence number "00111101," and so on, until the Nth driver circuit of the Nth LED circuit 10_N stores the digital sequence number "00110101." Furthermore, these driver circuits compare the sequence number information of the received lighting command with the stored digital sequence number Ds. When the driver circuit 102 determines that the received sequence number information matches the stored digital sequence number Ds, it controls the corresponding LED 101 to perform a specific lighting behavior (e.g., intermittent flashing, high-frequency flashing, colorful flashing, a ticker, etc.). For example, assume that the digital sequence number stored in the first driver circuit is set to "00111110." If the serial number information received by the first driver circuit is "00111110," which matches the digital serial number, the first driver circuit controls the corresponding light-emitting diode 101 to perform a specific lighting behavior. Conversely, if the serial number information received by the first driver circuit is "00111101," which does not match the digital serial number, the first driver circuit does not control the corresponding light-emitting diode 101 to perform a specific lighting behavior. The remaining driver circuit operations are the same or similar to those of the first driver circuit and are therefore not further described.

[0081] Furthermore, after each light-emitting diode circuit 10_1 to 10_N completes the storage of the digital serial number according to different positions, the position of the light string can be further confirmed with an external mobile device through a light string controller. The mobile device can be a smart phone, a tablet computer, a wearable device, etc. The mobile device has at least a photographic or camera lens with an image capture function, collectively referred to as an image capture unit. For example, the light string controller, that is, the external controller 50, will scan the code according to the built-in digital serial number range value (for example, 00000000~11111111) to output a carrier light-emitting command, wherein the light-emitting command includes serial number information and light-emitting information. When the serial number information matches the digital serial number Ds of the driving circuit, the corresponding light-emitting diode lamp is controlled to start the light-emitting process. Synchronously, the mobile device records the position of the corresponding light string of the light-emitting diode lamp through image capture, and sends the position information to the light string controller so that the light string controller can store it. This means that the light string controller can only fully control the lighting of the LED lights after storing two sets of data: the digital serial number and the light string position.

[0082] See Figure 4, which is a three-dimensional schematic diagram of an LED circuit package with parallel sequencing functionality according to the present invention. The LED circuit package includes two power pins, at least one LED 101, an LED circuit 10, and a package 20. The two power pins are configured to receive a voltage signal. The at least one LED 101 is coupled to the two power pins Vdd and Vss. A detailed description of the LED circuit 10 is provided above and will not be repeated here. The package 20 encapsulates the LED circuit 10, the at least one LED 101, and a portion of the two power pins, with the remaining portions of the two power pins exposed outside the package 20.

[0083] In summary, the present invention has the following features and advantages:

[0084] 1. The LED light string of the present invention does not require the use of additional external resistors, switches, or constant current circuits or devices, which can simplify the light string structure and circuit design.

[0085] 2. The LED circuit of the present invention sets both the internal resistor and the current source in the control IC, so that the structure of the LED light string is simple and easy to assemble and use.

[0086] 3. The present invention adopts a parallel carrier design, which does not require additional wiring to design signal transmission lines, and the control IC does not require additional contacts to receive specific voltage signals, making control simple and intuitive.

[0087] The above description is merely a detailed description and drawings of preferred embodiments of the present invention, but the features of the present invention are not limited thereto and are not intended to limit the present invention. The full scope of the present invention shall be subject to the appended patent claims. All embodiments that conform to the spirit of the present invention and similar variations thereof shall be included in the scope of the present invention. Any changes or modifications that can be easily conceived by a person skilled in the art within the field of the present invention shall be included in the patent scope of the present invention.

Claims

1. A light emitting diode circuit with parallel sequencing function, characterized in that: include: an internal resistor having a first end and a second end, the first end being connected to an input end of a power line, and the second end being connected to an output end of the power line; The input terminal is coupled to a controller to receive a voltage signal generated by the controller and provide an internal voltage at the first terminal or the second terminal of the internal resistor; an analog / digital conversion circuit coupled to the power line to receive the internal voltage; a driving circuit coupled to the power line and the analog / digital conversion circuit and receiving the voltage signal from the outside through the power line; as well as a current source coupled to the driving circuit and the analog / digital conversion circuit to provide a current path for the light emitting diode circuit; When the driving circuit executes a certain sequence mode based on a specific signal, the analog / digital conversion circuit performs an analog / digital conversion on the internal voltage to generate a digital serial number, and then the driving circuit stores the digital serial number.

2. The light emitting diode circuit with parallel sequencing function according to claim 1, characterized in that: After the sequencing mode is completed, the driving circuit executes an operating mode, in which the driving circuit receives a lighting command having a serial number and lighting information generated by the controller from the outside via the power line. When the driving circuit determines that the digital serial number matches the serial number information, the driving circuit controls a corresponding light-emitting diode to perform a specific lighting behavior according to the lighting information.

3. The light emitting diode circuit with parallel sequencing function according to claim 1, characterized in that: Also includes: A voltage stabilizing circuit is coupled to the power line to receive the internal voltage and convert the internal voltage into a power supply voltage with a specific voltage value to provide the voltage required for the operation of the analog / digital conversion circuit.

4. The light emitting diode circuit with parallel sequencing function according to claim 1, characterized in that: The voltage signal is a DC voltage, a pulse voltage or a carrier voltage.

5. The light emitting diode circuit with parallel sequencing function according to claim 2, characterized in that: The serial number information and the light emitting information are respectively digital values ​​having multiple digits.

6. The light emitting diode circuit with parallel sequencing function according to claim 5, characterized in that: The light-emitting information is followed by the sequence number information to form the light-emitting command; or the sequence number information is followed by the light-emitting information to form the light-emitting command.

7. The light emitting diode circuit with parallel sequencing function according to claim 1, characterized in that: The internal voltage is used to provide a voltage required for the operation of the driving circuit.

8. The light emitting diode circuit with parallel sequencing function according to claim 1, characterized in that: The controller generates the specific signal which is received through the power line, and the specific signal is a specific code.

9. A light emitting diode circuit package with parallel sequencing function, characterized in that: include: Two power pins for receiving a voltage signal; At least one light emitting diode coupled to the two power pins; The light-emitting diode circuit according to any one of claims 1 to 8, wherein the light-emitting diode circuit is coupled to the two power pins and the at least one light-emitting diode, and the light-emitting diode circuit is powered by the voltage signal received by the two power pins; and A package body is used to package the light emitting diode circuit, the at least one light emitting diode and a portion of the two power pins, and to expose the other portion of the two power pins outside the package body.

10. A light emitting diode light string with parallel sequencing function, characterized in that: include: A plurality of light-emitting diode circuits are electrically connected via a power line to form a parallel structure, each of the light-emitting diode circuits comprising: an internal resistor having a first end and a second end, the first end being connected to an input end of a power line, and the second end being connected to an output end of the power line; wherein the input end of a first one of the plurality of LED circuits is coupled to a controller to receive a voltage signal generated by the controller, and an internal voltage is provided at the first end or the second end of the internal resistor of the first LED circuit, and the input ends of the remaining LED circuits receive the internal voltage provided by the previous LED circuit or a voltage after the internal voltage passes through the internal resistor; an analog / digital conversion circuit coupled to the power line to receive the internal voltage; a driving circuit coupled to the power line and the analog / digital conversion circuit, and receiving the voltage signal from the outside through the power line; and a current source coupled to the driving circuit and the analog / digital conversion circuit to provide a current path for the light emitting diode circuit; wherein the plurality of internal resistors of the plurality of light emitting diode circuits are connected in series via the power line; When each of the driving circuits executes a certain sequence mode based on a specific signal, each of the analog / digital conversion circuits performs an analog / digital conversion on the internal voltage to generate a digital serial number, and then each of the driving circuits stores the digital serial number.

11. The LED light string with parallel sequencing function according to claim 10, characterized in that: After the sequencing mode is completed, each driving circuit executes an operating mode, wherein each driving circuit receives a lighting command having a serial number and lighting information generated by the controller from the outside via the power line. When each driving circuit determines that the digital serial number matches the serial number information, each driving circuit controls a corresponding light-emitting diode to perform a specific lighting behavior according to the lighting information.

12. The LED light string with parallel sequencing function according to claim 10, characterized in that: Each of the light emitting diode circuits further comprises: A voltage stabilizing circuit is coupled to the power line to receive the internal voltage and convert the internal voltage into a power supply voltage with a specific voltage value to provide a voltage required for the operation of the analog / digital conversion circuit.

13. The LED light string with parallel sequencing function according to claim 10, characterized in that: The voltage signal is a DC voltage, a pulse voltage or a carrier voltage.

14. The LED light string with parallel sequencing function according to claim 11, characterized in that: The serial number information and the light emitting information are respectively digital values ​​having multiple digits.

15. The LED light string with parallel sequencing function according to claim 14, characterized in that: The light-emitting information is followed by the sequence number information to form the light-emitting command; or the sequence number information is followed by the light-emitting information to form the light-emitting command.

16. The LED light string with parallel sequencing function according to claim 10, characterized in that: The internal voltage is used to provide a voltage required for the operation of the driving circuit.

17. The LED light string with parallel sequencing function according to claim 10, characterized in that: The controller generates the specific signal which is received through the power line, and the specific signal is a specific code.

18. The LED light string with parallel sequencing function according to claim 10, characterized in that: The internal voltage of the light emitting diode circuit whose electrical connection position is close to the input end of the power line is greater than the internal voltage of the light emitting diode circuit whose electrical connection position is far from the input end of the power line.

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