CN1254910A

CN1254910A - Optical disk player with audio record function

Info

Publication number: CN1254910A
Application number: CN 98122906
Authority: CN
Inventors: 权鲜枝
Original assignee: Individual
Current assignee: Individual
Priority date: 1998-11-24
Filing date: 1998-11-24
Publication date: 2000-05-31

Abstract

An optical disk player with audio record function is composed of microphone input, optical disk signal input, audio and/or video output and control units, and features that it also contains an audio record/replay unit, which can record or replay the audio signals from microphone under the control of control unit. It can be used for entertainment and learning with high efficiency.

Description

The CD player of band sound-recording function

The present invention relates to karaoke equipment, relate in particular to the CD player that has sound-recording function, comprise the LD machine, CD player, VCD machine, SVCD machine, CVD machine, Super Video CD machine, DVD player etc.

In current Karaoke playback equipment, especially in the optical disc playing device, generally be not with sound-recording function, as people during at sing karaoke, especially at home in the time of will practising singing, perhaps to utilize CD to learn a foreign language or during mandarin, can earlier sound be recorded, oneself listen again then to find that not enough place is very necessary also to be sought after.Regrettably present CD player is not with sound-recording function, so people need a kind of CD player with sound-recording function.

Purpose of the present invention just provides the CD player that a kind of energy satisfies the above band sound-recording function that requires, it comprises the microphone input, import from audio frequency and/or video that CD obtains, audio frequency and/or video output, and control section, it is characterized in that also comprising record/playback part, under the control of control section, will carry out record from the sound signal of microphone input.

Below with reference to accompanying drawings the preferred embodiments of the present invention are described in detail, therefrom can further find out characteristics of the present invention, advantage and other aspect.In the accompanying drawing:

Fig. 1 is the block diagram of the CD player of prior art;

Fig. 2 is a theory diagram of the present invention;

Fig. 3 is the recording workflow according to first preferred embodiment of the invention;

Fig. 4 shows the replayed section of first preferred embodiment.

Before detailed description the present invention, need to prove that the line in the accompanying drawing does not represent that direct lead connects, and just represents the flow direction of signal, and can also carry out other necessary processing in the middle of this.

Fig. 1 is the block diagram of the CD player of prior art.Referring to Fig. 1, the CD player of prior art generally comprises control section 11, CD importation 12, microphone input 15, the mixing portion 13 and the output 14 of microphone input and CD input.Its basic functional principle is the work of control section control CD importation 12 and mixing portion 13, and under the control of control section, back output is mixed in CD importation and microphone importation.In the case of necessary, people can carry out required action by the control knob on the face of CD player or by the remote command control section.

Fig. 2 is a theory diagram of the present invention.Referring to Fig. 2, on the basis of existing technology, optical disc playing device of the present invention has increased record/playback part, under the control of control section, to recording from the sound signal of microphone input.Under the control of control section, and can carry out playback to the sound that record/playback part is recorded.

Record among Fig. 2/playback part 21 can be the sound-track engraving apparatus of magnetic tape type, can be disk drive, also can be the recording (as the commercial speech chip that can buy of employing current trend, or using the ASIC circuit) of storer mode.Among the present invention, preferably adopt speech chip.

Below just partly being to describe first preferred embodiment of the present invention under the situation of speech chip in record/playback.About the detailed directions of various types of voice chip, with reference to its service manual, no longer describe in detail among the present invention, below with reference to Fig. 3, the workflow of this first preferred embodiment is described.

Fig. 3 is the recording workflow according to first preferred embodiment of the invention.At first, shown in square frame 31, control section 21 detects the user and wants recording.User's instruction may be sent by control panel, also may send by telepilot.The instruction of sending can be the requirement instruction that begins immediately to record, can be the requirement beginning (as the beginning of a first song) that arrives a certain certain content and the order that begins to record from this point, for example require since the recording of the second first song, also can be that a certain specific play time from the CD begins recording, for example if the time point of setting is 0, then from CD begin record; If the time point of setting is 20 minutes, then the 20th minute content begins recording from the CD.What preferably, record command comprised is from a certain first instruction of singing that begins to record.Then, as square frame 32, control section 21 arrives the specified position of user, and notes this position.Here need to prove that if the user wants to begin recording from current location (or time), the position of then wanting to arrive is exactly current position of reading CD.No matter the user specifies pairing CD position of the moment that begins to record by which kind of mode, the mode that control section writes down this position can be pairing specific play time.For example, the user wants since the recording of the second first song, and then control section is calculated this place time corresponding point, as 30.35 minutes and note.Under the situation that begins to write down of a certain first song, preferred recording mode is a record number the user, if as the second first song, then write down 2, record is simple in this way.In a word, recording mode has a variety of, as long as the broadcast that can make the broadcast of CD and recording when playback synchronously still.Behind the record good position, control section just can allow CD move to desired location, starts record/playback part, has recorded shown in square frame 33.Shown in square frame 34, in Recording Process, then stop recording if receive the instruction that stops to record that the user sends.Preferably, if also stop recording when having arrived the end of a first song automatically.

Fig. 4 shows the replayed section of first preferred embodiment.At first, shown in square frame 41, the user sends play-back command.After control section receives the play-back command that the user sends, shown in square frame 42, from storer, read the CD position of recording beginning, allow CD move to this position, shown in square frame 43, begin simultaneously then to play CD and recording, allow these two kinds of sound mix the back and emit by output through mixing portion.In replayed section, can mute microphone (MIC), also can open microphone.Preferably the user can continue to use microphone.If want the sound of microphone simultaneously, then also need be mixed into the sound signal of microphone.In replayed section, if customer requirements stops playback, then shown in square frame 44, stop playback, can stop to play CD simultaneously and also can not stop to play CD this moment, preferably do not stop to play CD.In replayed section, if the end of text of playback then can stop playback automatically.

In above-described first embodiment, the user can only once record, and promptly the content of recording will cover the content of being recorded for the first time for the second time.

In the second embodiment of the present invention, the user can repeatedly record, and promptly the user can record the multistage content and not cover mutually.For example, the user can record the interior perhaps content of four first songs of two first songs.In the second embodiment of the present invention, the flow process of user recording is basically the same as those in the first embodiment basically, just in a second embodiment, also comprise the information of recording which section content in the record command that the user is sent out when recording, control section also needs to write down what record when record be for which section.In the second embodiment of the present invention, the flow process of user's playback also is basically the same as those in the first embodiment basically, and just in a second embodiment, what the user also comprised playback in the play-back command of playback is the information of which section content.

In the present invention embodiment described above, recording and playback all be with CD on the broadcast of certain content that a bit begins synchronous.In other embodiment of the present invention, the recording or the beginning of playback can be not yet with CD on the broadcast of some certain content synchronous, even can not play CD content and playback only.Realization about this class technical scheme all should be known to those skilled in the art.

In the present invention, having under the situation of a plurality of microphones, the present invention can also have allows the user select the function that will record to the input of which microphone.

In the present invention, the content that record/playback part is write down can exist among the DRAM (dynamic RAM), can exist among the SRAM, also can exist among the EEPROM.The advantage that is stored among the EEPROM is can also preserve after power down, in this case, also need also can store the information such as cd recording starting position that write down under the situation of power down.Preferably, used storer is DRAM among the present invention.About the capacity of storer, relevant with sample frequency, voice coding modes and desired storage time.In the present invention, the capacity of storer preferably can reach under the sample frequency of 8KHz, under the situation of Δ coding, can reach the capacity more than 1 minute, preferably has the capacity more than 3 minutes, and the capacity more than 5 minutes is preferably arranged.Pairing capacity is respectively: 60 seconds * 8Khz/s * 1bit/hz=480kbit, and 180 seconds * 8Khz/s * 1bit/hz=1440Kbit, 300 seconds * 8Khz/s * 1bit/hz=2400Kbit.

In other embodiment of the present invention, record/playback part can be a speech coder, and its coded result deposits storer under the control of control section.When playback, under the control of control section, take out again, and export through Voice decoder from storer.Speech coder can be an A/D transducer, and Voice decoder can be a D/A transducer.Under the preferable case, speech coder is the Δ scrambler, and Voice decoder is the Δ demoder.

In other embodiment of the present invention, also can not encode to voice signal and directly storage with analog memory.

In a word, though the present invention describes by specific embodiment, those of ordinary skill in the art can both understand, under situation about not departing from the scope and spirit of the present invention, can also carry out various changes and modifications to the present invention.Therefore, scope of the present invention is only limited by appending claims.

Claims

1, a kind of CD player with sound-recording function comprises the microphone input, the CD signal input, audio frequency and/or video output, and control section, it is characterized in that also comprising record/playback part, under the control of control section, will write down and playback from the sound signal of microphone input.

2, CD player as claimed in claim 1 is characterized in that control section recording beginning control device, according to user instruction, begins recording in the position of wanting.

3, CD player as claimed in claim 2 is characterized in that the described position of wanting is the beginning of a first song.

4, CD player as claimed in claim 1 is characterized in that described record/playback partly comprises voice coder/decoded portion and storage area.

5, CD player as claimed in claim 1 is characterized in that described record/playback part stores the sound of being recorded with analog memory.

6, CD player as claimed in claim 1 is characterized in that described record/playback part can only record one section speech.

7, as the CD player of claim 1 or 4, it is characterized in that described record/playback partly has the segmentation recording device, can segmentation record 2 sections or 3 sections or 4 sections speeches.

8, CD player as claimed in claim 1 is characterized in that playback synchronous mark pen recorder is arranged on the described CD player, makes the broadcast of playback and CD synchronous.

9, CD player as claimed in claim 1 is characterized in that described record/playback part stores the content of being recorded with number storage.

10, CD player as claimed in claim 4 is characterized in that described voice coder/decoded portion is D/A and A/D transducer.