KR101479778B1 - An electronic device and method for operating thesame - Google Patents

Abstract

An electronic apparatus according to an embodiment of the present invention is an electronic apparatus capable of audio output, comprising: a main IC; A sound source IC for sending a pre-stored start sound during booting of the main IC when the electronic device is powered on; And an amplifier IC for amplifying a signal output from a signal processing line formed by the sound source IC, wherein the sound source IC is formed between the main IC and the amplifier IC, 1 signal processing line and a second signal processing line for processing a signal output from the main IC.

Start-up sound source IC

Description

An electronic device and method for operating the same,

The present invention relates to an electronic device for outputting audio signals, and more particularly, to an electronic device for outputting a start signal indicating that an electronic device is driven when power is supplied and booted.

Currently, display devices capable of receiving digital broadcasting by expanding the spread of digital devices are also increasing in popularity.

In recent years, a display device has a time shift function for continuously recording an image to be displayed and displaying an image at a desired point in time, and the broadcast channel is also gradually increasing.

In addition, research and development for displaying a higher-quality image is continuously performed, thereby allowing a user to view a broadcast channel having a significantly lower image distortion than an analog.

Meanwhile, the initialization time of the internal processor increases in proportion to the complexity of the display device, so that the user has to wait a long time until the initial booting is completed.

To solve this problem, a function of outputting the start sound to the outside is provided while the electronic apparatus is booting.

FIG. 1 is a schematic view of a conventional electronic device capable of audio output.

Referring to FIG. 1, a storage unit 110 of a conventional device stores a program for controlling the device and audio data to be used when the device is booted.

When the start sound function, that is, the sound output function, is set in the audio processor 120, when the power is turned on, the main processor 130 controls the audio processor 120 to reproduce the start sound using the I2C bus 120).

At this time, the main processor 130 is continuously involved in the operation of the audio processing unit 120 to control the point of time at which audio data of melody is to be output, sound processing, and the like.

On the other hand, when the start sound function is not set, the main processor 130 reads the audio data stored in the storage unit 110 and converts the audio data into the I2S format, and then transmits the audio data to the audio processing unit 120 through the I2S bus to provide. The audio processing unit 120 demodulates the supplied audio data into an analog signal, and the speaker 140 amplifies the converted audio data and outputs the amplified audio data to the outside.

This allows the user to hear the start sound or sound while the device is booting.

However, in the above-described conventional apparatus, when the audio processing unit 120 provides the start sound function, the main processor 130 controls all the operations so that the audio processing unit 120 reproduces the start sound, It takes a lot of time.

The embodiment of the present invention is directed to a display device capable of reducing the time taken until the start sound is output by outputting a pre-stored start sound while the main IC is booting when a power on command of the display device is input, And to propose an operation method.

An electronic apparatus according to an embodiment of the present invention is an electronic apparatus capable of audio output, comprising: a main IC; A sound source IC for sending a pre-stored start sound during booting of the main IC when the electronic device is powered on; And an amplifier IC for amplifying a signal output from a signal processing line formed by the sound source IC, wherein the sound source IC is formed between the main IC and the amplifier IC, 1 signal processing line and a second signal processing line for processing a signal output from the main IC.

According to another aspect of the present invention, there is provided a method of operating an electronic device, including: initializing a sound source IC for turning on an electronic device and generating a start sound; An audio signal stored in the sound source IC is amplified through an amplifier and then outputted while the main IC for controlling operation of the electronic device is booted; And a step of outputting a predetermined control signal from the main IC and forming a signal processing line bypassed by the switching element in the sound source IC.

The occurrence of signal interference between the main IC and the sound source IC is reduced and the generation of the start sound by the sound source IC can be stabilized.

In addition, the audio signal normally output from the main IC is bypassed and output to the amplifier and the speaker, so that interference of the audio signal output through the sound IC with the main IC is also reduced.

Hereinafter, the present embodiment will be described in detail with reference to the accompanying drawings. It should be understood, however, that the scope of the inventive concept of the present embodiment can be determined from the matters disclosed in the present embodiment, and the spirit of the present invention possessed by the present embodiment is not limited to the embodiments in which addition, Variations.

In the following description, the word " comprising " does not exclude the presence of other elements or steps than those listed.

With respect to the embodiment of the present invention, the following description will be made by exemplifying a display device as an audio-output electronic device. The present invention is applicable to an electronic device that processes and outputs an audio signal.

2 is a diagram illustrating a start sound generator according to a first embodiment of the present invention.

Referring to FIG. 2, an electronic apparatus according to an embodiment of the present invention includes an illustrated start sound generating apparatus. The display apparatus includes an MPEG decoder, a video / audio processor, and the like for processing a signal for video or audio reproduction A sound source IC 220 for generating a start sound while the main IC 210 is booted when the power is turned on and a start IC 220 for starting the sound IC 220. [ And an amplifier IC 230 for receiving and amplifying the sound and outputting the amplified sound to a speaker 240.

In detail, the sound source IC 220 is powered by a predetermined microcomputer (not shown) when the power of the display device is turned on, and the start sound stored during the booting of the main IC 210 is supplied to the amplifier IC 230 and the speaker 240. [0033]

In particular, the sound source IC 220 processes the audio signal 223 stored in the storage unit 223 for a few seconds after the main IC 210 is booted and transfers the processed audio signal 223 to the amplifier IC 230, The sound source IC 220 includes a bypass configuration for normally processing signals output from the main IC 210 after booting the main IC 210. [

That is, the sound source IC 220 includes a second signal processing line 2b for processing the audio signal output from the main IC 210, and a first signal processing line 2a for processing the stored start sound .

The sound source IC 220 is provided with a start sound controller 222 which is woken up by turning on the power of the display device and a switch controller 222 which selectively switches signal lines connected to the amplifier IC 230 under the control of the start sound controller 222 And a storage unit 223 for storing a start sound to be output to the amplifier IC 230 during booting of the main IC 210. [

As described in the related art, the main IC 210 includes a plurality of processors for realizing a plurality of functions of the display device, and it takes some time to boot up the main IC 210.

Accordingly, a sound source IC 220 is provided, which is an audio digital signal processor for outputting a start sound to a speaker during the time required for the user to recognize the normal operation of the display device and increase the emotional effect will be.

An audio signal processed by the main IC 210 is also output through the amplifier IC 230 and the speaker 240. The audio IC 220 is connected to the main IC 210, And a switching unit 221 for forming a signal processing line is formed at an input terminal.

The switching unit 221 is switched under the control of the start tone control unit 222 of the tone generator IC 220. When the initial signal output after the booting of the main IC 210 is input, The start tone control unit 222 and the storage unit 223 are switched to form the second signal processing line 2b which is not connected.

That is, the first signal processing line 2a is formed so that the start sound stored in the storage unit 223 is output to the amplifier IC 230 during the booting of the main IC 210 after the power of the display device is turned on .

The start sound controller 222 of the sound source IC 220 detects whether or not a predetermined signal (audio signal) is input from the main IC 210, and when the initial signal is input, 221 so that the audio signal output from the main IC 210 is input to the amplifier IC 230. [

If the audio signal output from the main IC 210 is the same as the signal processing line for generating the start sound, only the start sound can be output, and only the audio processed by the MPEG decoder of the main IC 210, Since the signal may not be output through the speaker.

The main IC 210 outputs a mute-off signal as an audio signal after the booting is completed. The mute-off signal is supplied to the main IC 210 before the stabilized signal processing by the MPEG decoder or the video / In order to prevent an abnormal signal from being output to the user.

In this case, the start sound controller 222 of the sound source IC 220 may monitor whether or not a mute off signal is input from the main IC 210, and may switch the mute off signal to the switching (Bypass) signal.

Accordingly, when the muting off signal is inputted from the main IC 210, the sound source IC 220 becomes ready to bypass the audio signal output from the main IC 21.

The amplifier IC 230 may be a digital amplifier. In this case, the amplifier IC 230 receives a digital audio signal output from the sound source IC 220, converts the digital audio signal into an analog signal, and outputs the analog signal to the speaker 240.

The sound source IC 220 for generating the start sound is formed between the main IC 210 and the amplifier IC 230 so that the audio signal output from the sound source IC 220 is high So that there is no possibility that the current flows to the side of the main IC 210 having the impedance.

In addition, the amplifier IC 230 is configured as a digital amplifier, so that a malfunction of a signal output can be reduced compared with a case where an analog signal is processed at a previous stage of the amplifier.

3 is a diagram illustrating a start sound generator according to a second embodiment of the present invention.

3, a display device according to an embodiment of the present invention includes an illustrated start sound generating device, and includes an MPEG decoder, a video / audio processor, and the like for processing a signal for image or audio reproduction in a display device And an amplifier IC 330 having a configuration for generating a start sound through the speaker 340 when the main IC 310 is booted.

The amplifier IC 330 bypasses a signal output from the main IC 310 and amplifies the amplified signal by the amplifier block 334. The amplifier IC 330 amplifies the amplified signal, The signal is output through the speaker 340.

In detail, the amplifier IC 340 performs an operation for amplifying an audio signal by the amplifier block 334 and, at the same time, performs an operation for generating a start sound during booting of the main IC 310.

A configuration in which the output of the start sound and the audio signal of the main IC 310 are bypassed by the amplifier IC 340 can be implemented simply in a circuit.

The amplifier IC 340 amplifies not only the audio signal output from the main IC 310 but also the audio signal (start sound) stored in the storage unit 333.

The amplifier IC 330 includes an audio control unit 332 for controlling the output of the start sound stored in the storage unit 333 and the audio control unit 332 is connected to the main IC 310, And controls the switching unit 331 for selectively detecting the presence or absence of a signal and switching the signal processing line.

When a specific signal (or an initial signal) is input from the main IC 310, the switching unit 331 switches between an audio control unit 332 for generating a start sound and a storage unit 333 So that the audio signal of the main IC 310 is amplified by the amplifier block 334 normally.

Here, the switching time of the switching unit 331 may be the time when the initial signal output from the main IC 310 is input, and the initial signal may be an audio mute signal.

The start sound generator of the second embodiment of the present invention is also configured to normally process the audio signal output from the main IC while the start sound stored by the amplifier IC can be output through the speaker at the time of booting the main IC .

An operation method of the display device will be described with reference to FIG. 4 of the present invention as described above.

4 is a flowchart illustrating an operation method of a display apparatus according to an embodiment of the present invention.

First, when the user turns on the display device (S401) to watch the broadcast, the microcomputer turns on the power source of the apparatus and the power input signal of the remote controller, and the sound source IC Is initialized (S402).

Next, the sound source IC reproduces an audio signal corresponding to the stored start sound, amplifies the sound signal by the amplifier, and outputs the amplified audio signal through the speaker (S403).

During the period, the main IC performing the functions of video / audio decoding, multiplexing and audio / video processing of the display device is booted, and the main IC outputs an initial signal to the sound source IC after the booting is completed. For example, a mute-off signal for outputting an audio signal to the speaker before the normal audio signal processing is completed is output (S404).

When the sound source IC receives the initial signal (mute off signal) output after booting of the main IC, a bypass line is formed in accordance with the switching in the sound source IC (S405) A signal processing line for processing is formed (S405). The signal initially output after booting the main IC may be a control signal for controlling the switching operation of the sound source IC, and the mute off signal is exemplified as a control signal, and the present invention is not limited thereto.

Thus, the audio signal normally processed after the booting of the main IC is output through the amplifier and the speaker along the bypassed line.

As a result, the user can hear the start sound preset before the normal processed audio signal is output from the main IC, thereby increasing the user's confidence in the display device and stimulating emotion.

Brief Description of the Drawings Fig. 1 is a schematic view of a conventional electronic device capable of audio output. Fig.

2 is a view showing a start sound generator according to a first embodiment of the present invention.

3 is a view illustrating a start sound generator according to a second embodiment of the present invention.

4 is a flowchart illustrating an operation method of a display apparatus according to an embodiment of the present invention.

Claims (8)

1. An electronic device capable of audio output, Main IC; A sound source IC for sending a pre-stored start sound during booting of the main IC when the electronic device is powered on; And And an amplifier IC for amplifying a signal output from a signal processing line formed by the sound source IC, The sound source IC includes a first signal processing line formed between the main IC and the amplifier IC for transmitting a pre-stored start sound and a second signal processing line for processing a signal output from the main IC An electronic device characterized by. The method according to claim 1, The sound source IC includes a storage unit for storing the start sound, a start sound control unit for controlling to output a start sound stored in the storage unit, and a switching unit for bypassing an audio signal output from the main IC An electronic device characterized by. 3. The method of claim 2, And the second signal line for processing a signal output from the main IC is a bypass line for switching the switching unit. The method according to claim 1, Wherein the sound source IC is formed with a second signal processing line in the sound source IC when an audio mute signal is output from the main IC. The method according to claim 1, The amplifier IC comprises a digital amplifier, Wherein the digital audio signal output from the sound source IC is analog-processed by the amplifier IC and then output through a speaker. A main IC for controlling the operation of the electronic device; An amplifier IC including an amplifier block for outputting a pre-stored start sound during the booting of the main IC and amplifying an output start sound when the electronic device is powered on; And And a speaker for outputting an audio signal amplified by the amplifier IC, A first signal processing line for outputting the start sound and a second signal processing line for outputting an audio signal outputted from the main IC are formed in the amplifier IC, and the first signal processing line and the second signal processing line Wherein the signal output through the line is amplified by the amplifier block and then output to the speaker. Initializing a sound source IC for generating a start sound when the electronic device is powered on; An audio signal stored in the sound source IC is amplified through an amplifier and then outputted while the main IC for controlling operation of the electronic device is booted; And Forming a bypass line connecting the main IC and the amplifier by a switching element in the sound source IC when a predetermined control signal is input from the main IC to the sound source IC; Way. 8. The method of claim 7, Wherein the step of amplifying the audio signal stored in the sound source IC through the amplifier and then outputting the audio signal is performed until the sound source IC is initialized and then a predetermined control signal is outputted from the main IC. How it works.

Images