CN2211635Y

CN2211635Y - Karaoke player

Info

Publication number: CN2211635Y
Application number: CN 94208742
Authority: CN
Inventors: 池成根
Original assignee: Individual
Current assignee: Individual
Priority date: 1994-04-30
Filing date: 1994-04-30
Publication date: 1995-11-01
Anticipated expiration: 2004-04-30

Abstract

The utility model relates to a karaoke player whose music signal or fast-slow tempo or the font color arranged on the screen are varied. The song data which is solidified in a data memory delivers the lyrics data to a sound signal processing system under the control of a central processing unit, and the lyrics is displayed on the TV watchdog. The music is played from an acoustic device, and the purpose of singing can be obtained. The karaoke player is mainly composed of four parts: a micro process control system, a song selection system, a sound signal processing system and a video signal processing system.

Description

Karaoke player

The utility model belongs to music to be mixed and plays device, is the karaoke machine that a kind of music and synchronous lyrics are handled.

Singing at present has or not music to mix to play, have band to mix to play etc. form, this brings restriction on material resources, financial resources, the manpower for some place, is not easy to people's self-recreation.Also useful sound equipment is mixed using if also be difficult for of playing concerning the lyrics person of being unfamiliar with.

The purpose of this utility model provides a kind of change color that can make the lyrics on the screen with the beat of music, and both: each word of the shown lyrics is with the relative variable color of music, makes the man who loves to singing follow music seeing that mixing that the lyrics sing play device.

The utility model is realized with following mode: use selector switch, select song, central processing unit is according to the switch interface circuit, judges selected song number.From data memory, find out the music of appointment song and the start address of the lyrics then.Address output is on address wire and select corresponding data memory chip selection signal, reads in corresponding data memory chip selection signal from data line, reads in related data from data line.At this moment the selection of the chip selection signal OE of data memory and CE is that the output signal by address decoder decides again according to the address of address latch output.At this moment central processing unit sends memory and selects signal NE and read signal RD, and the data of specifying the memory assigned address to begin are input in the central processing unit in proper order.

Central processing unit converts the music data that reads in to the standard midi signal, is sent to the midi signal input end of audio signal generator by its output terminal.

Lyrics data is sent to the screen control circuit by the output terminal that central authorities handle through connector.Central processing unit reads in music data and lyrics data from data memory, and they are sent to sound equipment and screen respectively, and these all work are finished by the internal data program of memory under program.

The standard midi signal (data) that audio signal generator is exported central processing unit is transformed into the voice signal of corresponding size and frequency, by low-pass filter, is sent to Yang Shengqi after electric current, voltage amplification in note amplifier, and the music of sounding is come.

Data signal processor is imported and be sent to the video data output interface to the lyrics data that central processing unit sends by input connector CN.It finds out the address of corresponding lyrics data from the type data memory, data are come by the inside that data line is read into data signal processor.

Data signal processor is temporary in video memory RAM the type data, under the control of the HSYNC signal that sends in URRESET signal that in synchronizing circuit, sends and the phase-locked loop circuit, data signal processor reads in corresponding data from video memory RAM, and this signal resolved into the R.G.B signal after pulsewidth modulation, the R.G.B signal is sent to three input ends of video synthesizer respectively by its three output terminals.

Video synthesizer is exported composite signal the R.G.B signal of data signal processor output with from the synthetic back of the signal of external video input end (CN2) input by output terminal, amplifies through transistor BG electric current, is sent to the video inputs of TV watch-dog again.The position of the lyrics on screen is to be controlled by the internal register of data-signal device.Synchronous generator resolves into line output signal and (frame) output signal after outer video signal is imported, and delivers to respectively in phase-locked loop circuit and the data signal processor.

Phase-locked loop circuit compares the phase place from the line output signal of synchronous generator, sends the oscillator signal of characteristic frequency to data signal processor.Produce the cycle of R.G.B output signal according to cycle of this oscillator signal.

The utility model is after music and song mark are stored to pen recorder, select song with action button, and selected song is taken out from pen recorder, and be transported to respectively in captions and the music apparatus, thus the song of the song of coming out in the music apparatus.And the lyrics of song appear in the captions device on picture, and change its color according to music rhythm, allow the user hear simultaneously and music and see the lyrics they are carried out synchronously.

Fig. 1 is the utility model block scheme.

Fig. 2, Fig. 3 are circuit theory diagrams of the present utility model.

See Fig. 1, the circuit that the machine of playing is mixed in Karaoke can be divided into four parts.The micro treatment control system that they are made up of CPU, latch, code translator, memory under program, RAM, EPROM data memory etc. respectively; Select circuit by the song that interface circuit and switches set are organized into; The sound signal processing system that forms by audio signal generator, low-pass filter, note amplifier; By video interface circuit type ROM, look the video signal processing system that step RAM, data signal processor, synchronous generator, phase-locked ring, vision signal compositor etc. are formed.

See Fig. 2, Fig. 3, U1 is a central processor CPU, U2, U32 are the address latch, and U3 is an address decoder, and U4, U5 also are address decoders, U6 is memory under program EPROM, U7 is an external RAM, and U8, U9 are the switch interface circuit, and U10 is an OR circuit, from U11 to U26 is EPROM, as data memory.U27 is an audio signal generator, and U28, U29, U30 form low-pass filter, and U31 is a note amplifier.U33 is the video data output interface circuit, and U34 is a data signal processor, and U35, U36 are type data memory ROM, and U37, U38 are the video data ram memory.U39 is the vision signal compositor, and U40 is a synchronous generator, and U41 is a phase-locked loop circuit.

Song information leaves among the EPROM that is made up of to U26 U11, and it is made up of two parts, first music data, and it two is lyrics datas.System programization is in U6EPROM.The type data are solidificated among the ROM that is made up of U35, U36.

Use song to select switch SW 0～SW9, at this moment the song of selectable hope clicks SW again and begins switch, will show lyrics information and the musical sound that sounds in loudspeaker on the TV Monitor.Lyrics information is accompanied by music signal and saves the variation of gathering and change (variable color).In case click the SW start button, CPU sends signal by switch interface circuit U 8 to switches set, and U9 reads in from interface circuit, and on off state is determined selecteed song number.An output signal of the WR signal of the chip selection signal CPU of interface circuit U8 and U3 address decoder decides.The chip selection signal of interface circuit U9 by the output signal of the RD signal of CPU and address decoder U3 or door decide.After the decision of song address, CPU selects the appointment song of specifying the memory assigned address to begin by address decoder U3 and U4 and U5.The address selection of song data is finished by address bus AB, and reading in by data bus DB of song data finished.After song data was read in by CPU, music signal (data) exported audio signal generator to by its output channel.Before this, music signal converts the midi signal of standard to.This signal is converting sound signal in U27, and exports from its two left and right sides output pins.First order wave filter is formed by C1 and U28A in right road, by R1, and R2, C9, C3 and U29A form second level wave filter, by R5, R6, C5, C11 and U30A form third level wave filter, equally, left passage is formed first order wave filter by C2 and U28B, by R3, R4, C4 and U29B form second level wave filter, by R7, R8, C6, C12 and U30B form third level wave filter.The voice signal that sends at passage passes through above three grades of active filters, and high-frequency signal is removed, and only passes through low-frequency audio signal.This two paths of signals passes through respectively by capacitor C7, resistance R 9 and capacitor C8, and the audio amplifier circuit that resistance R 10 and note amplifier U31 form is delivered to left and right sides sound equipment respectively.

Lyrics data in the song signal outputs to video interface circuit U33 by the output channel of CPU.Digital signal processor U34(DSP) receive vision signal after, by its data bus DB and address bus AB and control signal, in the type rom memory, find out the address of respective symbols, and it is delivered among the video memory RAM that is made up of U37 and U38.U34 is under the control of control signal of being sent by U40 homogenous frequency signal generator and the control signal sent by the U41 phase-locked loop circuit, the vision signal that leaves in the video-ram is read into U34(DSP), after the pulsewidth modulation, vision signal is resolved into R, G, the B signal outputs to three input ends of U39 respectively.U39 is exporting by its output terminal from U34 with from the synthetic back of the vision signal of outside.This signal after electric current amplifies in BG, outputs to the video inputs of TV watch-dog through capacitor C13.

In a word, song selection task is to be finished under the control of CPU by switch interface contactor group.Be solidificated in song data in the data memory under the control of CPU, lyrics data is sent to video signal processing system, music data is sent to the sound signal processing system, and the lyrics are presented on the TV Monitor, music is released from sound equipment, reach the purpose of karaoke.

Claims

1, a kind of Karaoke cassette player, it is characterized in that: CPU sends signal by switch interface circuit U 8 to switches set, U9 reads in from interface circuit, on off state, determine selecteed song number, an output signal of the WR signal of the chip selection signal CPU of interface circuit U8 and U3 address decoder decides, after the decision of song address, CPU is by address decoder U3 and U4 and U5, the appointment song of selecting appointment memory assigned address to begin, the address selection of song data is finished by address bus AB, reading in by data bus DB of song data finished, after song data is read in by CPU, music signal (data) exports audio signal generator to by its output channel, this signal is converting sound signal in U27, and exports from its two left and right sides output pins, and first order wave filter is formed by C1 and U28A in right road, by R1, R2, C9, C3 and U29A form second level wave filter, by R5, R6, C5, C11 and U30A form third level wave filter, same left passage is formed first order wave filter by C2 and U28B, by R3, R4, C4 and U29B form second level wave filter, by R7, R8, C6, C12 and U30B form third level wave filter, this two paths of signals passes through respectively by C7, R9 and C8, the audio amplifier circuit that R10 and U31 form is delivered to left and right sides sound equipment respectively.Lyrics data in the song signal outputs to video interface circuit U33 by the output channel of CPU, after digital signal processor U34 receives vision signal, by its data bus DB and address bus AB and control signal, in the type rom memory, find out the address of respective symbols, and it is delivered among the video memory RAM that U37 and U38 form, U34 is under the control of control signal of being sent by U40 homogenous frequency signal generator and the control signal sent by the U41 phase-locked loop circuit, the vision signal that leaves in the video-ram is read into U34 (DSP), after the pulsewidth modulation, vision signal is resolved into R, G, the B signal, output to three input ends of U39 respectively, U39 is exporting by its output terminal from U34 with from the synthetic back of the vision signal of outside, this signal is through capacitor C13, after electric current amplifies in BG, output to the video inputs of TV watch-dog.