CN100433177C - Recording and reproducing apparatus - Google Patents

Abstract

A recording/reproducing apparatus includes a reproducing section and a recording section. The video player includes a play rate control unit and a video playing unit. The playing rate control unit determines a playing rate, and the image playing unit is used for playing an image according to the playing rate. The recording part comprises an inquiry unit and an image recording unit. The inquiry unit outputs an inquiry signal to the play rate control unit to obtain the play rate, and the image recording unit performs a recording operation according to the play rate to record the image. When the volume of the video and audio data to be stored is large, the invention can effectively accelerate the speed of video recording and reduce the time of transcription.

Description

video recording device

【Technical field】

The present invention relates to a video recording and playback device, and in particular to a video recording and playback device capable of reducing dubbing time.

【Background technique】

Today, with the explosion of information, most multimedia products are released in the form of CDs. In recent years, the market share of consumer CDs has increased year by year, and almost every computer now includes a CD-ROM drive. From this we can see that CD-ROMs play an important role in multimedia. aspect importance. The most common optical drive on the market today is capable of accessing CD-ROM, CD-R and CD-RW. The capacity of a disc can reach at least 640MB, and from the initial single speed, double speed... to the current 50 Two or higher speeds, the advancement of optical drive technology is not uncommon, and because of the rapid changes in technology, it can be more diversified in multimedia applications.

And for the video recording and playback device that is generally connected with TV or any audio-visual player, except that VHS video tape can be used as the medium for storing data, there are currently existing video recording and playback devices that use CD-ROM or DVD-ROM as the storage data medium. In addition to real-time recording of TV programs, the data stored in VHS video tapes can also be transcribed and stored in CD-ROM or DVD-ROM to increase the storage time. As the practicability of optical discs gradually improves, it will bring a new trend to the use of home audio-visual multimedia.

However, the current video recording and playback devices can only record video in real time for the audio and video data to be stored while playing the video, that is to say, the video and audio data can only be stored at a single speed. . If the amount of video and audio data to be stored is large, it will be very time-consuming; especially when transcribing data stored in VHS video tapes to CD-ROM or DVD-ROM for storage, the data is transcribed at a single speed The stored action will cause unnecessary waste of user time.

【Content of invention】

In view of this, the object of the present invention is to provide a video recording and playback device, which can effectively speed up video recording and reduce the time for transcribing video and audio data.

According to the object of the present invention, a video recording and playback device is proposed, including a video playback unit and a video recording unit. The video display unit includes a playback rate control unit and an image playback unit. The playback rate control unit determines a playback rate, and the image playback unit is used to play an image according to the playback rate. The video recording unit includes an inquiry unit and an image recording unit. The inquiry unit outputs an inquiry signal to the playback rate control unit to know the playback rate, and the image recording unit performs a recording action according to the playback rate to record the image.

According to another object of the present invention, a method for video recording and playback is proposed, including: (a) determining a playback rate; (b) playing an image according to the playback rate; (c) outputting an inquiry signal to know the playback rate; (d) perform a recording action according to the playback rate to record images.

【Description of drawings】

In order to make the above-mentioned purposes, features, and advantages of the present invention more obvious and understandable, a preferred embodiment is specifically cited below, and in conjunction with the accompanying drawings, the detailed description is as follows:

FIG. 1 is a schematic diagram of a video recording and playback device according to a preferred embodiment of the present invention.

FIG. 2 shows a flow chart of a video recording and playback method according to a preferred embodiment of the present invention.

【Detailed ways】

FIG. 1 is a schematic diagram of a video recording and playback device according to a preferred embodiment of the present invention. In FIG. 1 , the video recording and playback device 100 includes a video playback unit 110 and a video recording unit 120 . The video display unit 110 includes a video playback unit 112 and a playback rate control unit 114 . The playback rate control unit 114 determines a playback rate V1, and the image playback unit 112 is used to play an image according to the playback rate V1. The recording unit 120 includes an inquiry unit 124 and an image recording unit 122 . The inquiry unit 124 outputs a query signal (query) S1 to the playback rate control unit 114 to obtain the playback rate V1, and the image recording unit 122 performs recording operations synchronously according to the playback rate V1 to record the video.

Wherein, the playback rate V1 can be played at single speed, double speed or quadruple speed according to the user's choice. If the user wants to speed up the speed of recording or dubbing, he can choose a higher multiple speed (such as double speed or quadruple speed) to play, then when the query unit 124 outputs a query signal (query) S1 to the playback rate control unit 114, it is known The projection rate V1 just can be a higher multiple speed (as double speed or quadruple speed). And the image recording unit 122 can record synchronously according to the video playback rate V1 (such as double speed or quadruple speed); it improves the problems derived from only using single speed to store video and audio data in the prior art.

In addition, please refer to FIG. 1 and FIG. 2 at the same time. FIG. 2 shows a flowchart of a video recording and playback method according to a preferred embodiment of the present invention. The video recording and playback method implemented by the video recording and playback device 100 includes the following steps 202 - 208 . First, in step 202, a playback rate V1 is determined. The playback rate V1 is determined by the playback rate control unit 114 in the playback unit 110 .

Next, in step 204, an image is played according to the playback rate V1. That is to say, the video playing unit 112 in the video playing unit 110 plays a video according to the video playback rate V1 determined by the playback rate control unit 114 . Then, in step 206, an inquiry signal is output to obtain the playback rate. That is to say, the inquiry unit 124 of the video recording unit 120 outputs an inquiry signal S1 to the play rate control unit 114 to know the play rate V1 of the image play unit 112 . Finally, in step 208, a recording operation is performed according to the playback rate to record images. That is to say, after the inquiry unit 124 knows the playback rate V1, the image recording unit 122 can synchronously perform an image recording operation according to the playback rate V1.

In addition, the video recording unit 122 receives the analog data (analog data) or digital data (digital data) output from the video playback unit 110 to perform video recording. Analog data is, for example, audio-visual data (A/V data) in formats such as NTSC or PAL. The digital data is, for example, data in formats such as DVI (Digital Visual Interface) or HDVI (High-Definition Vector Imaging).

In the video recording and playback device disclosed in the above-mentioned embodiments of the present invention, when the video playback unit 112 has a variety of video playback rates, and the video playback action is performed at a video playback rate higher than single speed, the video recording unit 122 starts video playback. Before the recording operation, the inquiry unit 124 is used to output an inquiry signal to know the playback rate of the video playback unit 112, and then the video recording unit 122 performs the video recording operation according to the playback rate and synchronizes with the video playback operation. The present invention replaces the conventional image recording unit that can only perform image recording at single speed regardless of whether the video playback unit performs video playback at single speed or higher than single speed. In this way, when the amount of audio-visual data to be stored is large, the present invention can effectively speed up the recording speed and reduce the time for transcribing the audio-visual data.

In summary, although the present invention has been disclosed as above with a preferred embodiment, it is not intended to limit the present invention, and anyone skilled in this art can make various other embodiments without departing from the spirit and scope of the present invention. Changes and modifications, so the scope of protection of the present invention should be defined by the scope of the appended patent application.

Claims (10)

1. Equipment for recording and playing back images comprises:

One puts shadow portion, comprising:

One playback rate control module determines one to put shadow speed; And

One image broadcast unit is put shadow speed with this and is play an image; And

One video recording portion comprises:

One inquiry unit is exported an interrogating signal to this playback rate control module, puts shadow speed to learn this; And

One image recording unit is put shadow speed and is carried out recording action to record this image with this.

2. Equipment for recording and playing back images according to claim 1 is characterized in that, this image recording unit is received from this and puts the simulated data (analog data) that shadow portion is exported, and carries out this image recording action.

3. Equipment for recording and playing back images according to claim 2 is characterized in that, this simulated data is video-audio data (A/V data).

4. Equipment for recording and playing back images according to claim 1 is characterized in that, this image recording unit is to be received from this to put the numerical data (digital data) that shadow portion is exported, and carries out this image recording action.

5. Equipment for recording and playing back images according to claim 4 is characterized in that, this numerical data is DVI or HDVI form.

6. recording playback image method comprises:

Determine one to put shadow speed;

Put shadow speed with this and play an image;

Export an interrogating signal and put shadow speed to learn this; And

Put shadow speed and carry out recording action with this to record this image.

7. recording playback image method according to claim 6 is characterized in that, this image is with a simulated data (analog data), carries out this image recording action.

8. recording playback image method according to claim 7 is characterized in that, this simulated data is video-audio data (A/V data).

9. recording playback image method according to claim 6 is characterized in that, this image is with a numerical data (digital data), carries out this image recording action.

10. recording playback image method according to claim 9 is characterized in that, this numerical data is DVI or HDVI form.

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