FIELD OF THE INVENTION
The present invention generally relates to a simplified Karaoke system for playing and self-learning of music. More particularly, the present invention relates to a multi-format Karaoke System for displaying and self-learning of songs by an user.
BACKGROUND OF THE INVENTION
Karaoke is believed to have originated in a small bar in Japan. The in-house band recorded their music onto tape, and if they were not there the singer would just sing along to the tape. The word "Karaoke" was written on the tape, "Kara" meaning missing and "Oke" meaning band or orchestra.
Karaoke is a music entertainment system providing prerecorded accompaniment to popular songs that a performer sings live, usually by following the words on a video screen.
Karaoke is singing with a pre-existing song, where the listener virtually replaces the original lead singer. Karaoke songs are reproduced to sound like the original song, but without lead vocals. The lyrics of the song are presented to the singer via a video screen, highlighting the words to be sung, so that the singer can follow along without memorizing the song, lyrics. Karaoke songs are rarely produced by the original artist or recording studio. They are usually recreated by independent karaoke manufacturers. Most of these manufacturers user professional musicians and singers to produce the likeness of the original song. Karaoke songs may include some vocals. If the original song contains any background vocals (i.e. chorus, harmonies, back-up singers, etc), then the

karaoke versions will usually contain them as well. Certain karaoke discs provide the lead vocals as well, for demonstration purposes.
US20080070213 discloses a Karaoke device with integrated mixing, echo and volume control. The Karaoke device of this invention is included within an enclosure and having a voice pickup element integrated into the enclosure and audio signal from a DVD player passes into the enclosure, passes through an electronic circuit for amplifying the electrical signal and for controlling the amplitude of the electrical signal and the audio input signal into a mixed audio signal.
US2010203491 (Al) relates, in general to a karaoke system and more particularly, to karaoke system having a sing learning function that enables a user to repeatedly listen to songs on a bar or length basis and enables the user to sing with sounds.
US2008070214 relates to an invention similar to that described in US2008070213. However, the distinguishing feature of US 2008070214 is that a video input signal is.allowed to pass into an enclosure which directly connects to a video output signal that passes out of the enclosure.
US2002051119: teaches a method and system for customizing a molten film selection by selecting a film clip including a video track and a sound track comprising one or more actor voice tracks and a background track, modifying the sound track to remove a selected actor voice track, recording a new voice track for synchronized playback with the selected actor, and saving a new sound track including the modified soundtrack and the new voice track.
US210107856 describes a Karaoke system that enhances the experience of singing along with music without need to display lyrics. The system includes a

combination of a vocal track reducer and an echo canceller, a decision logic for determining when a person is talking or singing and a method for attenuating the vocal track when singing is detected. No special CD or DVD with lyric track is required making the system capable of working with CD,Mp3.AM.FM,HD Radio, satellite radio signals or any other suitable content source (This may be DVD player of the present case). The result is that any content source may potentially be used as a Karaoke sound track without any pre-modification. This invention as it appears to us, includes the feature of integration of a Karaoke system and a DVD and attenuation of the vocal sound track instead of switching on/off of the vocal sound track of the present case.
However, all the self-learning musical systems known in the art are quite complex and costly, and further lack the features for on/off mechanism to enable the user to switch off the vocal track of the DVD and enjoy singing on his own from the displayed lyric.
OBJECTS OF THE INVENTION
It is therefore an object of the invention to propose a Multi-format Karaoke system for displaying and self-learning of songs by an user.
Another object of the invention is to propose a Multi-format Karaoke system for displaying and self-learning of songs by an user, which provides substantially the same technical effect and advantages that of a Karaoke System.
A still another object of the invention is to propose a Multi-format Karaoke system for displaying and self-learning of songs by an user, which is simple in construction and easy to operate.

A further object of the invention is to propose a Multi-format Karaoke Player for displaying and self-learning of songs by an user, which is cost-effective.
SUMMARY OF THE INVENTION
According to the invention, there is provided a Multi Format Karaoke System for displaying including self learning of songs by an user, comprising :
a microphone for converting user's voice into electrical signals;
a key input for enabling input related to the selection of songs for
sound playback;
an authorization unit for identification of code and prevent fake
systems as well authorization of a genuine Karaoke disc;
a remote control unit providing a selection input to select songs;
a signal processing unit (s) comprising an audio decoder for converting
digital signals into analog signals so as to play back and output digital
data or converting the user's voice analog signals input after
amplification by an amplifier through a second microphone into digital
signal;
a video encoder for processing multimedia data including image files;
a main processor unit for detection of audio data from the original
track of a music video, and a second track displaying the same music
but without emitting the sound of singing of the original artist;
an audio amplification unit to amplify the processed audio signal; and
a display unit capable of outputting video and audio signals.

BRIEF DESCRIPTION OF THE ACCOMPANYING DRAWINGS
Figure 1 Block diagram showing a construction of a multi-format karaoke system according to the invention.
Figure 2 Schematic of the working method of the karaoke system of Figure 1.
DETAIL DESCRIPTION OF THE INVENTION
The present invention discloses a simplified system for playing and learning music that can offer a large selection of music and videos and can be used without a plurality of components normally incorporated into a costly, known, and complex karaoke system. The inventive system requires a basic unit providing Karaoke effect, and a DVD-disc with incorporated program instructions and readable by a Multi-format Karaoke system using a TV-set, to show the background films or sequences of pictures and a flowing text of the lyrics to the singer and play the sound. The singer positions himself such that he can see the text, hear the music and sing to it.
It is advantageous to use the DVD-disc together with a basic music playing and learning device like Karaoke, including a microphone.
One of the sound tracks constitutes the original track from the music video and another track displays the same music but without emitting the sound of singing of the original artist.

As shown in figure 1, the system includes:
a microphone [001] for converting user's voice into electrical signals;
a key input [002] for enabling input related to the selection of songs
for sound playback;
an authorization unit [007] for identification of code and prevent fake
systems as well authorization of a genuine Karaoke disc;
a remote control unit [006] providing a selection input to select songs;
a signal processing unit (s) comprising an audio decoder [004] for
converting digital signals into analog signals so as to play back and
output digital data or converting the user's voice analog signals input
after amplification by an amplifier [003] through a second microphone
[009] into'digital signal;
a video encoder [008] for processing multimedia data including image
files;
a main processor unit [005] for detection of audio data from the
original track of a music video, and a second track displaying the same
music but without emitting the sound of singing of the original artist;
an audio amplification unit [009] to amplify the processed audio signal;
and
a display unit [010] capable of outputting video and audio signals.
Figure 2 is describes how the stated embodiment of the present invention s together with an user.
When a specific disc is inserted into the loader of the Karaoke System while the system is ON, the video will start displaying the audio/video in the display unit [010] which is a TV or any other suitable compatible display system.

First, the system identifies from binary code, from a Flash ROM by an authentication unit [007] to prevent a fake system if inserted. Loaded disc is rejected in terms of unknown disc or disc error. The Karaoke disc is authenticated for its originality and a pirated copy is prevented. After the authentication, the vocal track is set off by default. Discs other than the permissible discs, can however be played in other common disc format.
In the playback stage, songs can be selected by using selection keys placed on a remote unit [006] according to which the system reads the Karaoke songs file and starts playing with or without the vocal depending upon the selection. The main menu is visualized in the display unit [010] which offers a number of choices that can be selected with the help of the plurality of the buttons on the remote control.
Apart from the provision of song selection from another karaoke file, the menu also provides the user to toggle vocal on/off, and enables the user for transmitting associated instructions in accordance to which the system verifies through the authentication unit [007] the decryption of the encrypted Karaoke file. The user can also activate the vocal feature along with the Karaoke file which is then mixed with the microphone inputs of the voice. The microphone [001] converts the user's voice into electrical signals which is amplified and the output resulting data is fed to the (audio conversion code or file) signal processing unit.
At the signal processor unit the signal is processed by an embedded audio and video code and the desired signal is produced.

The produced desired video signal is fed to the TV or other suitable compatible display system (010) directly. The Audio signal is input to the Audio Amplifier unit (009). The output of the audio amplifier (009) is fed to the input of TV or other suitable speaker system.
It is also possible to choose if the songs are to be played in a predetermined order, a random order or an order programmed by the user. When these choices are made, a play-window is displayed on the TV set (010).
The information menu shows the information about all the songs. During the play of the disc, the user has control over the usual video functions like Stop. Fast forward, and Rewind. When a part of the disc is finished or the user stops, the Karaoke player returns to the information menu.
A summary of the advantages of the invention are as under.
• The system can be realized by loading and operating a pre-processed DVD disc in a basic learning and playing music system, thereby reducing the cost.
• The system makes the operation easier for an user by providing clear instructions displayable on the screen so that even the children can use it.
• The system is made easy to sing songs with the help of a Vocal On/Off means.
The simplified system of the invention is capable of reading the stored information on a storage media in a particular form, process and generate signal as per application requirement. The system is further enabled to:

Interface with a microphone with the singing facility;
accommodate a mixer block capable of mixing the voice signal from
the microphone converted into electrical signal with a pre-recorded
backing track and generate a mixed audio to serve the application
purpose; and
interface a terminal capable of transmitting the generated mixed signal
in an audio display equipment like TV.
The ordinary television set is used to display the picture and the mixed sound.
The picture, the pre recorded music track and the text of the lyrics are read from the DVD Disc incorporated in the system.
OPERATIONAL REQUIREMENT
1. Power supply (AC 110V-220V, 50Hz/60Hz)
2. A TV Set which have Audio Video Inputs.
ADVANTAGES OF THE INVENTION
Vocal ON / OFF: One can listen the original music first, after that
person can sign the same song in his own voice with or without
original track music.
Built-in Mixer for the device means for or Voice Narration.
Graphic Equalizer for precise tone control.
Digital Amplifier.
Digital Music Volume Control.
Digital Key control for better sound effect.
Digital Echo function for voice enhancement.

At least 10 numeric and key buttons to input songs without going to Menu.
Means for generating Playlist of one's favorite Songs. Microphone Inputs.
MULTIMEDIA FORMAT SUPPORT
Playable Disc: CD, CD-G, VCD, SVCD, DVD, DC-R, CD-RW, DVD+R,
Dual Layer DVD+-RW
Compatible Format: Audio CD, HDCD, DVD-Video, VCD, CD+G,
MP3, JPEG, WMA MPEG, DAT
Means for audio-Video Interleaving
Compatible with DTS/AC3
MPEG1 Video, MPEG2 Video, MPEG4 (Xvid, DivX 3.11, 4.x, 5.x and
5.x).
EXTERNAL USB SUPPORT
USB 2.0 Full Speed and High Speed means for File Copying from disc to USB means for File Deleting in USB means for CD-DA Ripping in USB.
CONTROL MECHANISM
Power failure Resume playback for all DVD/VCD/CD/MP3 DVD player firmware Upgrade by CD disc and USB Electronic Shock Protection for 4Mxl6 SDRAM Parental and password control for playback rated DVD disc. Screen Saver and automatic Power off when DVD player is idle.

VIDEO OUTPUT
108MHz/12-bit Video Encoder
Composite Video Output (CVBS)
S-Video Output (YC)
Component Video Output (Y/Pb/Pr and Y/Cr/Cb)
Brightness / Contrast / Sharpness Control
Support NTSC, PAL, Video Output Format.
AUDIO INPUT / OUTPUT
Multi-channel Analog audio output
Digital Amplifier
Coaxial Digital SPDIF audio output.
MIC inputs for Karaoke function
Digital'speaker setting for individual channels
Digital Downmix function (Stereo and Surround mode).
Prologic II function
3D Surround Processing and Equalizer Control.
Digital Volume Control
PLAYBACK/REMOTE FUNCTION
Slow Forward and Slow Reverse
Fast Forward and Fast Reverse (2X, 4X, 8X, 16X and 32X).
Step Forward, Step Backward, Play and Pause.
Aspect Ratios: 4.3 Pan and Scan, 4:3 Letterbox, 16.9 Widescreen.
Title, Chapter and Time search for DVD.
Track and Time search for VCD, CD.

Random Play Mode / Programming Mode / A-B Repeat Mode /
Sequence Play Mode.
Program Playback Mode DVD, VCD, SVCD and CD (up to 20
programs).
Multi-Angle / Subtitle / Audio Language Selection for DVD.
Slideshow effect for Picture CD and JPEG files.
Plays Both NTSC and PAL Discs. Automatic NTSC and PAL
switching.
Playback Control (PBC) for Direct Plays.
Built-in Mixer for Karaoke or Voice Narration.
Zoom in (2X, 3X, 4X) and Zoom Out (1/2X, 1/3X, 1/4X) for VCD
and DVD.
The above description presents some preferred embodiments of the invention. Other embodiments varied within the scope of the disclosure are also covered by the invention.

WE CLAIM :
1. A Multi Format Karaoke System for displaying including self learning of songs
by an user, comprising :
a microphone [001] for converting user's voice into electrical signals;
a key input [002] for enabling input related to the selection of songs
for sound playback;
an authorization unit [007] for identification of code and prevent fake
systems as well authorization of a genuine Karaoke disc;
a remote control unit [006] providing a selection input to select songs;
a signal processing unit (s) comprising an audio decoder [004] for
converting digital signals into analog signals so as to play back and
output digital data or converting the user's voice analog signals input
after amplification by an amplifier [003] through a second microphone
[009] into digital signal;
a video encoder [008] for processing multimedia data including image
files;
a main processor unit [005] for detection of audio data from the
original track of a music video, and a second track displaying the same
music but without emitting the sound of singing of the original artist;
an audio amplification unit [009] to amplify the processed audio signal;
and
a display unit [010] capable of outputting video and audio signals.
2. A device as claimed in claim 1, wherein the input unit comprises a
microphone [001] which converts audio signals into electrical signals and a
DVD-disc loader [002] for loading songs to the system.

3. A device as claimed in claim 1, wherein the authorization unit [007] is enabled to identify binary code to prevent fake system to be played as well as provide authentication to the allowable disc format to prohibit the use of pirated copies.
4. A device as claimed in claim 1, wherein the signal processing unit (S) is enabled to process audio-video signals using the embedded codes comprising:
an audio code [004] for converting digital signals into analog signals so as to output digital data or converting the users voice analog signal input through the microphone to digital signal; and comprising : a main processor unit [005] for detection of vocal ON-OFF; and a video encoder [008] or processing multimedia data including image files.
5. A device as claimed in claim 1, wherein the inputted audio signal from the input unit [001] constitutes electrical signal which is the fed to the amplification unit [003] to amplify, and wherein the processed audio signal is inputted to a second amplification unit [009] to amplify processed audio signal.
6. A device as claimed in claim 1 wherein the output unit [010] is a display media for example a TV or other suitable compatible display sys tern capable of outputting video and audio signal.
7. A method of operating a Multi Format Karaoke player for displaying and self learning of songs' by an user, comprising the step of:

- inserting a DVD disc,
- validating the disc by the system,
- inputting audio and video signals from the inserted disc,
- inputting voice signals from an user,
- processing the inputted signal; and
- displaying a desired output signal.

8. The method as claimed in claim 7, wherein the step of validating comprises identification of the binary code after decompression of the binary code from a Flash RAM into SDRAM.
9. The method as claimed in claim 7, wherein the signals are inputted by a microphone for audio signals and by a dvd disc-set for video signals, the microphone converting users voice into electrical signals for processing.
10.The method as claimed in claim 7, wherein the authorization of inputted file is implemented in the authorization unit [007], and wherein song selection is done by the user.