KR100792677B1 - The apparatus and method of 5.1 channel transmitting by connecting an universal serial bus - Google Patents

Abstract

A 5.1 channel transmitting terminal using a USB and a 5.1 channel transmitting method using the same are provided to continuously supply a smooth power to each device and prevent power from being unnecessarily consumed by controlling power in a PWM method and maintaining the minimum frequency. A 5.1 channel transmitting terminal using a USB comprises a PWM power control part(110), a USB connection part(120), an RF output part(130), an RF 5.1 channel part(140), and a USB/audio selection part(150). The PWM power control part(110) prevents power from being unnecessarily used by controlling power in a PWM method, maintaining the minimum frequency, and continuously supplying a smooth power to each device. The USB connection part(120) checks whether the USB is connected to a USB connection port. If the USB is connected to the USB connection port through the USB connection part(120), the RF output part(130) changes over from an idle state to an active state, and outputs a wake-up signal to activate a peripheral at a current of 0.5 mA to 1.5 mA. The RF 5.1 channel part(140) executes data communication in an ISM(Industrial Scientific Medical)-band 5.1 channel scheme under the control of a microcomputer(170). If a signal indicating that the USB has been connected is received from the USB connection part(120), the USB/audio selection part(150) selectively transmits either the data stored in a USB memory or an audio signal outputted from an electronic device to the peripheral.

Description

Isma band short-range low-power 5.1-channel transmission terminal using the PSS and 5.1-channel transmission method using the same {THE APPARATUS AND METHOD OF 5.1 CHANNEL TRANSMITTING BY CONNECTING AN UNIVERSAL SERIAL BUS}

The present invention can transmit data with peripheral devices located near the ISM band at the same time as the external connection terminal and the 5.1-channel method, and continuously control the smooth power by minimizing the frequency by controlling the power by PWM method. ISM band short-range low-power 5.1-channel transmitter using USB, which can be supplied to each device to prevent unnecessary power use, and can output voice data input through the microphone to output to peripheral devices or record. It relates to a 5.1-channel transmission method.

In the current wireless sound system, even though surround speakers exist, surround playback is not performed because the reproduction signals output from the notebook and the computer body are 2-channel stereo.

To solve this problem, a total of six speakers are properly disposed around a laptop, a computer body, or a television, producing 5.1-channel sound effects.

The 5.1 channels are the number of channels used to code Dolby Digital, Digital Theater System (DTS), and most Sony Dynamic Digital Sound (SDDS) film soundtracks, where 5 is the front left, right and center speakers, In addition, it refers to the left and right surround speakers on the rear side, and 1 refers to a dedicated channel for effect sound of bass.

However, since the power supply is mainly supplied through the rechargeable battery, there is a problem in that unnecessary power is frequently used and power consumption is frequently generated, making it difficult to use for a long time.

When a user communicates an audio signal stored in a notebook and a computer main body in a 5.1-channel manner, there is a problem that a lot of noise occurs due to collision or interference between each channel.

In order to solve this problem, the present invention can transmit data in a 5.1-channel manner with peripheral devices located near the ISM band at the same time as an external connection terminal, and continuously by minimizing the frequency by controlling the power supply with a PWM method. By supplying smooth power to each device to prevent unnecessary power use, ISM band short range low power using USB that can output voice data directly through peripherals or record by mixing voice data input through microphone An object of the present invention is to provide a 5.1-channel transmitting terminal and a 5.1-channel transmitting method using the same.

In order to achieve the above object, the ISM band short-range low-power 5.1-channel transmission terminal using USB according to the present invention,

When the USB connection terminal is provided and the USB is connected, peripheral devices located near the ISM band are composed of 5.1 channel transmitting terminals operating in the 5.1 channel method.

The 5.1-channel transmitting terminal controls the power in a PWM manner to minimize the frequency, thereby continuously supplying smooth power to each device to prevent unnecessary power use (PWM POWER & BAT CONTROL) and ,

A USB connection unit for checking whether a USB connection is made to a USB connection terminal formed at one side;

When the USB is connected to the USB connection terminal through the USB connection part, the RF output part converts from the standby state to the operating state and outputs a wake-up signal (Wake up) to wake up the peripheral device at 0.5mA to 1.5mA. ))Wow,

RF_5.1 channel unit for data communication through 5.1 channel method of peripheral device and ISM band through microcomputer unit control,

When the signal that USB is connected is checked from the USB connection unit, data stored in the USB memory unit is transmitted to the peripheral device, or an audio signal output from an electronic device (laptop, PC, portable terminal, PMP, TV) is transferred to the peripheral device. USB & AUDIO selector which selects and controls to transmit,

An LCD display unit (LCD_DISPLAY) for controlling the display of the state and operation state of the 5.1-channel transmitter terminal through an LCD display window through the control of the microcomputer unit;

When communicating with the peripheral device from the RF_5.1 channel unit in the 5.1-channel method of the ISM band, the microcomputer unit for controlling the channel change to prevent the collision between each channel, the operation of each device,

A keypad control unit for controlling commands input from button keys of the 5.1-channel transmitting terminal;

It is achieved by mixing the voice data input through the microphone formed on one side of the 5.1-channel transmitting terminal to output directly to the peripheral device, or a microphone control unit for recording.

In addition, the 5.1-channel transmission method using the ISM band short-range low-power 5.1-channel transmission terminal using USB according to the present invention,

When the external device USB is connected to the USB connection terminal formed on an external side of the 5.1-channel transmitting terminal, checking whether the USB connection is made through the USB connection unit in real time and transmitting a USB connection signal to the microcomputer unit (S100);

When a USB is connected to the USB connection terminal through the control of the microcomputer unit, sending a wake up signal to operate the peripheral device in a 5.1-channel manner through the RF output unit RF_ (A) (S200);

Outputting a wake-up signal (Wake up) in the RF output unit (RF_ (A)) from the standby state to the operating state to wake up the operation of the peripheral device at 0.5 mA to 1.5 mA (S300);

When the peripheral device is operated by the wake up signal of the RF output unit RF_ (A), the data stored in the USB memory unit through the USB & AUDIO selection unit in the microcomputer unit or an electronic device (laptop) Controlling any one of audio signals (Signal) output from a PC, a portable terminal, a PMP, and a TV to be transmitted to a peripheral device (S400);

Performing data communication in the 5.1-channel manner of the peripheral device and the ISM band in the RF_5.1 channel unit through the control of the microcomputer unit (S500);

Mixing the voice data input from the microphone through the control of the microcomputer unit to output to the peripheral device, or to control to record through the recording mode (S600) is achieved.

As described above, in the present invention, since the 5.1-channel transmitting terminal can be interlocked with USB, which is an external device for performing data communication in the 5.1-channel method of the ISM band, data of the 5.1-channel transmitting terminal can be changed at any time and any place, and the power supply is PWM By minimizing the frequency by controlling the method, it is possible to continuously supply smooth power to each device to prevent unnecessary power use, and to mix the voice data input through the microphone and output it directly to the peripheral device, or It can record, there is an advantage that can be linked to the peripherals in the school or lecture hall.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

First, the ISM band (Industrial Scientific Medical Band) will be described.

The ISM band (Industrial Scientific Medical Band), originally part of the FCC regulations in the United States, is an industry-licensed and medical-use band that was originally unlicensed with weak field strengths. ~ 2.4835 GHz) and 5.8 GHz (5.725 GHz to 5.825 GHz) are most actively used for wireless LAN applications.

Since it is a license-free band, it can be used for free data communication, can be used all over the world, is easy to install, and can be configured in a small network in a home that can be freely deployed.

Representative wireless LAN standards using the ISM band include 2.1 Bluetooth, HomeRF, IEEE802.11, IrDA, and HIPERLAN.

Method name Bluetooth IEEE 802.11 Home RF IrDA HIPERLAN Transmission speed 1 Mbps (actually 721 kbps) 2 Mbps (IEEE 802.11b: 11 Mbps) 0.8 Mbps, 1.6 Mbps 4 Mbps (advanced IR: 16 Mbps) 23.5 Mbps Frequency band 2.4 GHz band 2.4 GHz band 2.4 GHz band infrared ray 5 GHz vs 17 GHz Modulation method Frequency hopping spread spectrum technology (hopping frequency up to 1600 times per second) Direct spreading and frequency hopping spread spectrum technology Frequency hopping spread spectrum technology (hopping frequency up to 50 times per second) 4-step PPM / 16-step PPM (primary modulation only) Frequency hopping spread spectrum technology Dedicated Voice Channel (Coding by CSVD or logarithmic PCM) radish radish radish 32 kbps ADPCM Transmission distance 10 m (1 mW, 0 dBm), 100 m (100 mW, +20 dBm) 100m (30m for 802.1b) 50 m 3.8m 30 m Primary Modulation GAUSSIAN Freq.Shift Keying (GMSK) BPSK / QPSK and GFSK GFSK remind Diff. GMSK Connection control method Master-Slave, Polling CSMA / CA CSMA / CA, TDMA Pplling EY-NPMA security Standard (Authentication, Encryption) option Standard (Encryption) radish NA

In the present invention, the multi-channel wireless access system chip using the ISM band as described above is separately embedded in the 5.1-channel transmitting terminal, so that the ISM band short range low power 5.1 channel transmitting terminal using the USB can be provided.

1 is a block diagram showing the components of the ISM band short-range low-power 5.1-channel transmission terminal using USB according to the present invention, which is a PWM power control unit (PWM POWER & BAT CONTROL), USB connection unit, RF output unit (RF_ (A)), RF_5.1 channel unit, USB & AUDIO selection unit, LCD display unit (LCD_DISPLAY), microcomputer unit, keypad control unit, microphone control unit.

The PWM power control unit (PWM POWER & BAT CONTROL) is configured to use a long time after charging by controlling the power in a PWM method to prevent unnecessary power usage.

For example, when AC power is input, PWM control is performed at 25 kHz, which is 1/4 of an oscillation frequency of 100 kHz of a power supply IC (not shown). This is to reduce noise that may be generated from transformers and other abnormal oscillations.

After PWM control at 25kHz, oscillation is performed by frequency modulation up to the power supply IC oscillation frequency.

When the power supply IC operating frequency reaches 100 Hz through frequency modulation, the PWM oscillation operation is performed at the power supply IC operating frequency driving the 5.1-channel transmission terminal.

This oscillation control can safely supply power to the 5.1-channel transmitting terminal.

The USB connection unit checks whether USB is connected to the USB connection terminal formed at one side, and transmits a USB connection signal to the microcomputer unit.

Herein, the USB connection terminal may be configured by selecting any one of 5 pins, 8 pins, and 24 pins. In particular, the USB connection terminal may be directly connected to a mobile phone by being configured as 24 pins.

The RF output unit RF_ (A) is a wake-up signal that wakes up the operation of the peripheral device at 0.5mA to 1.5mA when the USB is connected to the USB connection terminal through the USB connection, from the standby state to 0.5mA ~ 1.5mA. It serves to output

In other words, if there are peripheral devices located in the ISM band, the front left and right speakers and the center speaker, and the rear left and right surround speakers, USB is connected to the 5.1 channel transmitting terminal and the 5.1 channel transmitting terminal in the standby state operates. In this state, it is possible to turn on the power of the front left and right speakers, the center speaker and the left and right surround speakers at 0.5mA to 1.5mA.

In this case, the front left and right speakers, the center speaker, and the left and right surround speakers are wake up signals, which are set to 0.5 mA to 1.5 mA in advance.

Here, the wake-up signal (Wake up) is 0.5mA to 1.5mA because the output is low power, it is possible to reduce the power consumption can be used for a long time. The most desirable wake up signal is 1mA.

The RF_5.1 channel unit performs data communication in the 5.1 channel manner of the peripheral device and the ISM band through the control of the microcomputer unit.

That is, when USB is connected to the 5.1-channel transmitter terminal, the left and right speakers on the front of peripheral devices are set to A and B channels, the center speaker is set to C channel, and the left and right surround speakers on the rear side are controlled by the microcomputer unit. Set the D and E channels, set the subwoofer to the F channel, and perform data communication so that audio signals are transmitted to each channel.

The USB & AUDIO selection unit transmits data stored in the USB memory unit to a peripheral device or checks an electronic device (laptop, PC, portable terminal, PMP, TV) when a signal indicating that the USB is connected is checked from the USB connection unit. It controls to select and transmit the audio signal (Signal) output from the peripheral device.

That is, when the external device (USB) is connected through the USB connection unit, a selection control signal according to the device identification is provided to the RF output unit (RF_ (A)). If the external device is a USB device, digital audio is received from the external device through the USB controller. If the file is provided and the external device is not a USB device, the device receives the song information from the external device through the serial controller and provides the device control signal according to the user's operation to the external device so that the external device is driven according to the device control signal.

In addition, the USB & AUDIO selection unit performs USB or serial communication when the external device is connected to the USB connection unit, and determines whether the external device is a USB device based on the result of the communication and selects a control signal accordingly. Is generated and provided to the RF output unit RF_ (A).

At this time, the serial communication is preferably a UART, but is not limited thereto. Various modifications are possible.

The LCD display (LCD_DISPLAY) controls to display the status and operating status of the 5.1-channel transmitter terminal body to the LCD display window through the control of the microcomputer.

That is, the power on / off of the 5.1-channel transmission terminal is displayed, or the operation state of the data stored in the USB memory unit and the audio signal (Signal) output from the electronic device (laptop, PC, portable terminal, PMP, TV) are displayed. The audio data input through the microphone is mixed to display a state directly outputted to a peripheral device, or a recording state is displayed.

When the microcomputer communicates with the peripheral device from the RF_5.1 channel in a 5.1-channel manner in the ISM band, the microcomputer controls channel change to prevent collision between channels and controls the operation of each device.

That is, when the USB is connected to the USB connection terminal, the microcomputer sends a wake up signal to operate the peripheral device through the RF output unit RF_ (A) in a 5.1-channel manner, and the data stored in the USB memory unit or Select one of the audio signals (Signal) output from electronic devices (laptop, PC, portable terminal, PMP, TV) and control it to be transmitted to the peripheral device, and LCD to display the status and operation status of the 5.1 channel transmitter terminal. It is configured to control the display unit LCD_DISPLAY.

The microcomputer sends a wake up signal to operate the peripheral device in the 5.1-channel manner through the RF output unit RF_ (A) according to the channel setting value of the peripheral device inputted from the keypad controller.

In addition, the microcomputer unit controls voice data input from the microphone to be output to the peripheral device directly or through recording mode.

The keypad controller controls a command input from button keys of the 5.1-channel transmitting terminal.

That is, it performs dialing, volume control, and various operations of the 5.1-channel transmission terminal. In particular, the recording function through the microphone and the peripheral devices are set to A, B, C, D, E, and F channels through the RF 5.1 channel unit. It delivers audio signal to be played simultaneously simultaneously to peripheral devices of A, B, C, D, E, and F channels in close proximity to each other.

Here, each channel setting of the peripheral device can be changed by the user through button and switch input.

The microphone controller mixes voice data input through a microphone formed at one side of the 5.1-channel transmitting terminal and outputs it directly to a peripheral device, or has a recording function.

Hereinafter, a detailed operation process of the ISM band short-range low-power 5.1-channel transmitting terminal using USB according to the present invention will be described.

As shown in Figs. 1 and 4, a rectangular box-shaped 5.1-channel transmitting terminal is formed, and a multi-channel wireless access system chip using an ISM band is separately embedded in the 5.1-channel transmitting terminal, and PWM is formed at one side thereof. PWM POWER & BAT CONTROL, USB connection, RF output (RF_ (A)), RF_5.1 channel, USB & AUDIO selector, LCD display (LCD_DISPLAY), microcomputer, The keypad control unit and the microphone control unit are modularized to form a single PCB substrate.

First, when the external device USB is connected to the USB connection terminal formed on one side of the 5.1-channel transmitting terminal, it is checked in real time whether the USB connection is made through the USB connection unit and transmits the USB connection signal to the microcomputer unit.

Subsequently, when the USB is connected to the USB connection terminal, the microcomputer sends a wake up signal to operate the peripheral device through the RF output unit RF_ (A) in a 5.1-channel manner.

At this time, the RF output unit RF_ (A) is switched from the standby state to the operating state and outputs a wake up signal (Wake up) to wake up the operation of the peripheral device at 0.5mA to 1.5mA.

As a result, USB is connected to the 5.1-channel transmitter, and the 5.1-channel transmitter in standby is switched to the operating state, and the front left, right and center speakers and the left and right surround speakers are 0.5mA to 1.5mA. The power can be turned on.

Subsequently, when the peripheral device is operated by the wake-up signal Wake up of the RF output unit RF_ (A), the microcomputer unit stores data stored in the USB memory unit through the USB & AUDIO selection unit or the electronic device. Select one of the audio signals (Signal) output from the (laptop, PC, portable terminal, PMP, TV) to control the transmission to the peripheral device.

At this time, the user can first send data stored in the USB memory unit to the peripheral device first through the keypad control unit, or first send an audio signal (Signal) output from an electronic device (laptop, PC, portable terminal, PMP, TV) to the peripheral device. Select it and set it to the USB & AUDIO selection section.

Subsequently, the microcomputer unit performs data communication with the peripheral device through the 5.1 channel method of the ISM band through the RF_5.1 channel unit.

That is, when USB is connected to the 5.1-channel transmission terminal, the left and right speakers 10 and 20 on the front of the peripheral devices are made of A and B channels, and the center speaker 30 is made of C channels through the control of the microcomputer unit. Then, the rear left and right surround speakers 40 and 50 are set to D and E channels, the subwoofer 60 is set to F channels, and data communication is performed so that audio signals are transmitted to each channel.

Each channel setting for these peripherals can be changed by the user via button and switch inputs.

Subsequently, the microcomputer unit controls voice data input through the microphone control unit to be directly output to the peripheral device or to record through the recording mode.

For example, if a USB terminal is connected to a 5.1-channel transmitting terminal in a school or lecture hall, the 5.1-channel transmitting terminal in the standby state is switched to the operating state, and the front left and right speakers and the center speaker, which are peripheral devices at 0.5 mA to 1.5 mA, Then turn on the left and right surround speakers.

At this time, the voice spoken by the user through the microphone formed in the 5.1-channel transmission terminal is transferred to the front left, right and center speakers and the left and right surround speakers, which are controlled by the microcomputer unit.

When the user presses the record button through the keypad controller, the recording mode is operated to record the voice spoken by the user.

1 is a diagram illustrating a 5.1-channel transmission process with a peripheral device through a short-range low-power 5.1-channel transmission terminal using a USB according to the present invention;

2 is a block diagram illustrating the components of an ISM band short-range low-power 5.1-channel transmitting terminal using USB according to the present invention;

3 is a flowchart illustrating a 5.1-channel transmission method using a peripheral device through a short-range low-power 5.1-channel transmission terminal using USB according to the present invention;

4 is a diagram illustrating an ISM band short-range low-power 5.1-channel transmitting terminal using USB according to the present invention.

※ Brief description of reference numerals ※

100: 5.1 channel transmitter

110: PWM POWER & BAT CONTROL

120: USB connection

130: RF output unit (RF_ (A))

140: RF 5.1 channel section

150: USB audio (USB & AUDIO) selector

160: LCD display unit (LCD_DISPLAY)

170: microcomputer unit

180: keypad control

190: microphone control unit

200: USB

300: electronic equipment

Claims (4)

In the 5.1-channel transmission terminal 100 is provided with a USB connection terminal 105, the peripheral device located in the ISM band near field when the USB is connected in the 5.1-channel method, The 5.1-channel transmitting terminal 100 controls the power in a PWM manner to minimize frequency, thereby continuously supplying smooth power to each device to prevent unnecessary power usage (PWM POWER & BAT). CONTROL) 110, USB connection unit 120 for checking whether the USB is connected to the USB connection terminal formed on one side, When the USB is connected to the USB connection terminal through the USB connection unit 120, the RF output unit (Wake up) outputs a wake-up signal (Wake up) to switch to the operating state from the standby state to 0.5mA ~ 1.5mA ( RF_ (A)) 130, RF_5.1 channel unit 140 for data communication in the 5.1-channel manner of the peripheral device and the ISM band through the control of the microcomputer unit 170, When the signal indicating that the USB is connected from the USB connection unit 110 is checked, data stored in the USB memory unit is transmitted to the peripheral device, or an audio signal output from an electronic device (laptop, PC, portable terminal, PMP, TV) A USB & AUDIO selector 150 which selects and controls the transmission to the peripheral device, An LCD display unit (LCD_DISPLAY) 160 which controls to display the state and operation state of the 5.1-channel transmitter terminal on the LCD display window through the control of the microcomputer unit 170; When communicating with the peripheral device from the RF_5.1 channel unit 140 in the 5.1-channel manner of the ISM band, the microcomputer unit 170 for controlling the channel change to prevent collision between the channels, and controls the operation of each device, A keypad controller 180 for controlling commands input from button keys of the 5.1-channel transmitting terminal 100, ISM band short-range low-power 5.1 using USB, characterized in that the microphone control unit 190 for mixing or outputting the voice data input through the microphone formed on one side of the 5.1-channel transmitting terminal 100, or recording. Channel transmitting terminal. According to claim 1, RF_5.1 channel unit 140, when the USB is connected to the 5.1-channel transmission terminal, the front left and right speakers of the peripheral device to the A channel, B channel through the control of the microcomputer unit, and the center speaker ISM using USB, and the left and right surround speakers on the rear are D and E channels, the subwoofer is set to F channel, and data communication is performed so that audio signals are transmitted to each channel. Short-range, low-power 5.1-channel transmitter. The USB memory unit of claim 1, wherein the microcomputer unit 170 transmits a control signal to wake the operation of the peripheral device in a 5.1-channel manner through the RF output unit RF_ (A) when the USB is connected to the USB connection terminal. Select one of the data stored in the electronic device or the audio signal (Signal) output from the electronic device (laptop, PC, portable terminal, PMP, TV) to be transmitted to the peripheral device, and the status and operating state of the 5.1-channel transmitter terminal An ISM band short range low-power 5.1-channel transmitting terminal using USB, characterized in that for controlling the LCD display unit (LCD_DISPLAY) to be displayed. When the external device USB is connected to the USB connection terminal formed on an external side of the 5.1-channel transmitting terminal, checking whether the USB connection is made through the USB connection unit in real time and transmitting a USB connection signal to the microcomputer unit (S100); When a USB is connected to the USB connection terminal through the control of the microcomputer unit, sending a wake up signal to operate the peripheral device in a 5.1-channel manner through the RF output unit RF_ (A) (S200); Outputting a wake-up signal (Wake up) in the RF output unit (RF_ (A)) from the standby state to the operating state to wake up the operation of the peripheral device at 0.5 mA to 1.5 mA (S300); When the peripheral device is operated by the wake-up signal (Wake up) of the RF output unit RF_ (A), the data stored in the USB memory unit or the electronic device (USB & AUDIO) is selected by the microcomputer unit. Selecting one of the audio signal (Signal) output from the notebook, PC, portable terminal, PMP, TV) and controlling it to be transmitted to the peripheral device (S400), Performing data communication in the 5.1-channel manner of the peripheral device and the ISM band in the RF_5.1 channel unit through the control of the microcomputer unit (S500); ISM band short-range low-power 5.1-channel transmission using USB, characterized in that step (S600) of mixing the voice data input from the microphone through the control of the microcomputer to output directly to the peripheral device, or to record through the recording mode. 5.1 channel transmission method using a terminal.

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