Electronic price indicator, power supply apparatus and electric price indicating system
First Claim
1. A power supply apparatus, comprising:
- a power supply unit connected to a plurality of electronic price indicators that supplies driving power to the electronic price indicators;
an antenna that receives data transmitted from a server; and
a communication unit that confirms a first electronic price indicator to which data received via the antenna is applied among the electronic price indicators when the data is received and outputs a control signal to the power supply unit based on the received data, such that a power supply signal modulated according to the received data is supplied to the first electronic price indicator;
wherein the modulated power supply signal is distinguished between first data and second data by at least two voltage differences, and is classified by the first data and the second data; and
wherein the power supply unit includes;
a first regulator connected to a power supply voltage and that generates an output voltage according to a first control signal output through the communication unit,a second regulator driven by an output voltage generated through the first regulator and that generates a first level voltage according to a second control signal output through the communication unit, anda first switching device having an emitter connected to the second regulator, a base connected to the communication unit, and a collector connected to the power supply voltage.
3 Assignments
0 Petitions
Accused Products
Abstract
An electronic price indicating system according to the embodiment includes: at least one electronic price indicator for displaying product information; and a power supply apparatus connected to the at least one electronic price indicator to supply a driving signal which is driving power of the at least one electronic price indicator. The power supply apparatus includes: a power supply unit connected to the at least one electronic price indicator and supplying driving power to the electronic price indicator; an antenna for receiving data transmitted from a server; and a communication unit for confirming a first electronic price indicator to which data received via the antenna is to be applied and supplying power to the confirmed first electronic price indicator, wherein the communication unit controls an operation of the power supply unit, modulates the power supply signal according to the received data, and supplies the modulated power supply signal to the first electronic price indicator.
10 Citations
14 Claims
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1. A power supply apparatus, comprising:
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a power supply unit connected to a plurality of electronic price indicators that supplies driving power to the electronic price indicators; an antenna that receives data transmitted from a server; and a communication unit that confirms a first electronic price indicator to which data received via the antenna is applied among the electronic price indicators when the data is received and outputs a control signal to the power supply unit based on the received data, such that a power supply signal modulated according to the received data is supplied to the first electronic price indicator; wherein the modulated power supply signal is distinguished between first data and second data by at least two voltage differences, and is classified by the first data and the second data; and wherein the power supply unit includes; a first regulator connected to a power supply voltage and that generates an output voltage according to a first control signal output through the communication unit, a second regulator driven by an output voltage generated through the first regulator and that generates a first level voltage according to a second control signal output through the communication unit, and a first switching device having an emitter connected to the second regulator, a base connected to the communication unit, and a collector connected to the power supply voltage. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An electronic price indicating system, comprising:
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electronic price indicators for displaying product information; and a power supply apparatus connected to the electronic price indicators to supply a driving signal that is driving power of the electronic price indicators; wherein the power supply apparatus comprises; a power supply unit connected to the electronic price indicators that supplies the driving power to the electronic price indicators; an antenna that receives data transmitted from a server; and a communication unit that confirms a first electronic price indicator among the electronic price indicators to which data received via the antenna is applied when the data is received and that outputs a control signal to the power supply unit based on the received data, such that a power supply signal modulated according to the received data is supplied to the first electronic price indicator; wherein the modulated power supply signal representing first data and the modulated power supply signal representing second data are distinguished by at least two voltage differences, wherein each of the electronic price indicators comprises; a smoothing unit including a power port connected to the power supply apparatus and that receives a power supply signal supplied from the power supply apparatus; a power supply signal analyzing unit driven by the power supply signal received through the smoothing unit and that analyzes the power supply signal to confirm the product information; and a display unit for displaying the product information confirmed through the power supply signal analyzing unit; wherein the power supply signal is modulated based on data corresponding to the product information, wherein each of the electronic price indicators does not include a communication module for communication with a server and receives the power supply signal including the product information, wherein the power supply unit includes; a first regulator connected to a power supply voltage and that generates an output voltage according to a first control signal output through the communication unit; a second regulator driven by an output voltage generated through the first regulator and that generates a first level voltage according to a second control signal output through the communication unit; and a first switching device having an emitter connected to the second regulator, a base connected to the communication unit, and a collector connected to the power supply voltage. - View Dependent Claims (12, 13, 14)
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Specification