CN201260211Y

CN201260211Y - Household flash memory type video recorder

Info

Publication number: CN201260211Y
Application number: CNU2008200939645U
Authority: CN
Inventors: 朱卫民
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-05-14
Filing date: 2008-05-14
Publication date: 2009-06-17
Anticipated expiration: 2018-05-14

Abstract

The utility model discloses a domestic flash memory type video cassette recorder which aims at replacing storage mode of magnetic tapes and hard disks and simplifying mechanical structure of the video cassette recorder. The domestic flash memory type video cassette recorder comprises an analog-to-digital conversion circuit, an H.264 digital signal encoder circuit, a flash memory, a digital-to-analog conversion circuit and a switch, wherein an input end of the analog-to-digital conversion circuit is connected with an output end of a set-top box of a domestic digital television; the input end of the encoder circuit is connected with the output end of the analog-to-digital conversion circuit; digital signals are compressed to a media file having a format of H.264 or compressed media file having a format of H.264 is decompressed; one output end of the encoder circuit is connected with the flash memory, and the other output end is connected with the input end of the digital-to-analog conversion circuit; the flash memory can adopt a U disk, or an SD card, or an MMC card; the output end of the digital-to-analog conversion circuit is connected with an input interface of the television; and both ends of the switch are respectively connected with the output end of the set-top box of the television and the input end of the digital-to-analog conversion circuit.

Description

Family expenses flash memory formula video tape recorder

Technical field

The utility model relates to a kind of video tape recorder, particularly a kind of can be immediately or the pre-recording TV programme so that in the future can be on TV with the standard image quality home video tape recording of playback more clearly.

Background technology

In the fast pace of seizing every minute and second now all can type living environment, home video tape recording can be immediately or is periodically recorded the TV programme that the individual likes, so that appreciate in the future.Occurred three kinds of multimedia video tape recorders of storage before this on the market altogether, first kind is video tape recorder, and its use tape is as medium, signal record the employing contact, formats stored is an analog signal.Its shortcoming is a complex structure, and the failure rate height costs an arm and a leg, and tape is difficult for long-time the preservation, is not suitable for current digitlization memory requirement, has been eliminated gradually by people.

Second kind is CD writer, its use single to write or erasable repeatedly DVD CD as medium.Its weak point is, complex structure, and the failure rate height costs an arm and a leg, and occurs the phenomenon that crashes during imprinting sometimes.

The third is DVR, and it uses hard disk as medium, and storage is compressed into the file of mpeg format through the digital signal codec circuit.Because general digital signal codec circuit can not be compressed digital signal very little, so generally store file with hard disk.The problem of bringing therefrom is that the volume of video tape recorder is bigger than normal, and the complicated in mechanical structure of the video tape recorder of hard disk formula and fragile, its motor high speed rotating during work, and heating is serious, is not suitable for the high reliability request under the long-play of household appliances product.

Summary of the invention

The purpose of this utility model is to overcome the deficiency that above prior art exists, and provide a kind of simple in structure, use reliable, cheap, be easy to popularize in the family the video tape recorder that uses.

In order to realize above-mentioned purpose, can adopt following technical scheme: the video tape recorder of this programme comprises:

One analog to digital conversion circuit, the input of this analog to digital conversion circuit is connected with the output of the set-top box of household digital television set, is digital signal with the analog signal conversion of the TV programme of set-top box output;

One digital signal codec circuit H.264, this H.264 the input of digital signal codec circuit be connected with the output of analog to digital conversion circuit, above-mentioned digital signal is compressed into the media file decompress(ion) of the H.264 form after H.264 the media file of form maybe will compress, the one output is connected with the flash memory interface, and another output is connected with the input of D/A converting circuit;

One flash memory interface, this interface can be connected with a flash memory, and flash memory is used to store from the media file of the H.264 form of digital signal codec circuit output H.264;

One D/A converting circuit, this D/A converting circuit digital signal after the media file decompress(ion) of form H.264 is converted to analog signal, and its output is connected with the input interface of household digital television set.

Further, such scheme also can be set up a flash memory, and this flash memory is connected with the flash memory interface, and it is used to store from the media file of the H.264 form of digital signal codec circuit output H.264.

Further, can also set up a switch, the two ends of this switch are connected with the output of the set-top box of household digital television set and the input of D/A converting circuit respectively.

Above-mentioned flash memory can adopt USB flash disk or SD flash card or MMC flash card.

The beneficial effects of the utility model are:

1, because in the video tape recorder of the present utility model, the digital signal that the analog signal of exporting from the set-top box of household digital television set converts to through analog to digital conversion circuit, adopted H.264 the digital signal codec circuit that it has been carried out the compression of big compression ratio, therefore make flash memory might store the media file of this H.264 form after compression, and the requirement that can satisfy people's storage and play the capacity of TV programme, thereby replaced the storage mode of tape, hard disk, and the mechanical structure of video tape recorder simplified greatly;

2, product of the present utility model is under the prerequisite that does not reduce result of use, and structure is simpler, uses more reliably, and cost reduces greatly, so can generally promote in the family.

In order to make the utility model be convenient to understand, it is described further below by drawings and Examples with more clear.

Description of drawings

Fig. 1 is the block diagram of the utility model embodiment 1 circuit.

Fig. 2 is the block diagram of the utility model embodiment 2 circuit.

Fig. 3 is the block diagram of the utility model embodiment 3 circuit.

Fig. 4 is the action flow chart of the foregoing description recording TV program.

Fig. 5 is the action flow chart that the foregoing description is play the TV programme of having recorded.

Embodiment

Embodiment 1, referring to Fig. 1.But present embodiment is the home video machine circuit 10 that a kind of timed recording is also play on TV, and it comprises:

One analog to digital conversion circuit 12, the input of this analog to digital conversion circuit 12 is connected with the output of the set-top box 11 of household digital television set, is digital signal with the analog signal conversion of the TV programme of set-top box 11 output;

One digital signal codec circuit 13 H.264, this H.264 the input of digital signal codec circuit 13 be connected with the output of analog to digital conversion circuit 12, above-mentioned digital signal is compressed into the media file decompress(ion) of the H.264 form after H.264 the media file of form maybe will compress, the one output is connected with flash memory interface 14, and another output is connected with the input of D/A converting circuit 16;

One flash memory interface 14, this interface 14 can be connected with a flash memory, this flash memory can be connected by user oneself, and the flash memory that is connected is used to store from the media file of the H.264 form of digital signal codec circuit 13 outputs H.264.

Embodiment 2, referring to Fig. 2.Present embodiment is to set up a flash memory 17 on the basis of the foregoing description, and the user needn't oneself match flash memory, it is used to store from the media file of the H.264 form of digital signal codec circuit output H.264, and its circuit is shown among the figure 10.1.

Embodiment 3, referring to Fig. 3.Present embodiment is to set up a switch 18 on the basis of embodiment 2, and the two ends of this switch 18 are connected with the output of the set-top box 11 of household digital television set and the input of D/A converting circuit 16 respectively, and its circuit is shown among the figure 10.2.What set up switch 18 is consumption for saves energy.

Please consult Fig. 3 again.The power-off of inner

other parts

12,13,14,16,17 of this product when switch 18 closures, the anolog TV signals of external equipment-household digital TV set-top box 11 outputs are directly exported toward domestic television set 15.

When switch 18 was opened, video tape recorder 10 entered operating state, can record the analog television program signal of household digital TV set-top box 11 inputs, and the TV programme that is stored in the flash memory 17 that has recorded is play.

See also shown in Figure 4ly, when carrying out television program record, this video tape recorder 10 will be handled according to following step:

301, the analog digital television signal with 11 outputs of household digital TV set-top box converts digital television signal to by analog to digital conversion circuit 12;

302, see through H.264 codec circuit 13 and carry out compressed encoding, make digital television signal form a multimedia file;

303, this multimedia file is stored in the flash memory 14;

304, judge whether the user presses the button of " end ", if "Yes" then finishes; If "No" is then proceeded step 301.

See also shown in Figure 5ly, when playing recorded program, this video tape recorder will be handled by following step:

401, at first from flash memory 14, read the multimedia file of storage;

402, H.264 codec circuit 13 makes this multimedia file be reduced to digital television signal this multimedia file decompression;

403, through D/A converting circuit 17 digital television signal is converted to anolog TV signals;

404, see through domestic television set 15, the image signal and the sound signal of these anolog TV signals played back

405, judge whether the user presses the button that finishes broadcast, if "Yes" then finishes; If "No" is then proceeded step 401.

The circuit board of this video tape recorder is contained in the casing, because of casing belongs to the category of prior art, repeats no more here.

The above only is the best concrete exemplifying embodiment of the utility model, structural feature of the present utility model is not limited thereto, any be familiar with that present technique field person can think easily in the utility model field and variation or modification, all can be encompassed in the claim of following this case.

Claims

1, a kind of family expenses flash memory formula video tape recorder is characterized in that comprising:

2, family expenses flash memory formula video tape recorder according to claim 1, it is characterized in that a flash memory in addition, this flash memory is connected with the flash memory interface, and it is used to store from the media file of the H.264 form of digital signal codec circuit output H.264.

3, family expenses flash memory formula video tape recorder according to claim 1 and 2 is characterized in that an in addition switch, and the two ends of this switch are connected with the output of the set-top box of household digital television set and the input of D/A converting circuit respectively.

4, family expenses flash memory formula video tape recorder according to claim 3 is characterized in that said flash memory is a USB flash disk.

5, family expenses flash memory formula video tape recorder according to claim 3 is characterized in that said flash memory is the SD flash card.

6, family expenses flash memory formula video tape recorder according to claim 3 is characterized in that said flash memory is the MMC flash card.