TW201110697A - Audio/video recording and playing system and method - Google Patents

Abstract

The present invention provides an audio/video recording and playing method. In the audio/video recording process, original video signals are converted into analog video signals while sent to a display device to display. The analog video signals are converted into digital video signals. The digital video signals and captured digital audio signals are compressed into an audio/video compressed file. The audio/video compressed file is stored into a storage device. In the audio/video playing process, an audio/video compressed file is decompressed to restore digital video signals and digital audio signals. The restored digital video signals are converted into analog video signals so as to be displayed by the display device. The restored digital audio signals are converted into analog audio signals so as to be played by a speaker. A related system is also disclosed.

Description

201110697 VI. Description of the Invention: [Technical Leadership of the Invention] [0001] The present invention relates to a multimedia system and method, and more particularly to a system and method for recording and playing video and audio. [Prior Art] [〇〇〇2] When holding a meeting or teaching a course, it is often necessary to output image data from a computer to a display or projector for display so that the audience can understand the content of the explanation. Further, for important meetings. Or teach, sometimes you need to record the live video. For example, it is necessary to record some of the teaching process to facilitate teaching and learning anytime, anywhere, or to teach remotely by age... The method of recording materials is implemented in software. For example, use a soft cymbal to record a powerpoint slide. However, the software recording method has certain limitations, and it can often only be used for specific applications. It is not possible to record any image output by the computer, which makes it inconvenient to report. In addition, the method of recording audio and video is recorded by photography _ live video. However, the use of camera hemp scene effects is sometimes not ideal. For example, when there are a large number of charts and graphics: When the message needs to be displayed, the camera shooting_image (especially the image output by the brain) may not be clear enough. In addition to _ video, heart _ often need to play the shadow. = Clear and convenient to record audio and video in addition to the convenience: the broadcast of the sound, will bring greater convenience to the user. SUMMARY OF THE INVENTION [0004] In view of the above, it is necessary to provide a method for clearly and conveniently recording a variety of video and audio recording and playback systems and computer output images and on-site 098130468 Form No. A0101 Page 4 of 20 201110697 Sound And can easily play audio and video. [0005] Ο

A shirt recording and playback system connected to a computer, display device, microphone and speaker. The system includes a landscape image splitter, a video switcher, a shirt image converter, a video decoder, a video compressor, a sound decoder, and a video and audio. a processor, a storage device, a video decompressor, a sound encoder, and an image encoder, wherein, when recording video and audio: the image splitter divides the original image signal output by the computer into multiple channels, one of which is transmitted to the image switcher. The display device performs display, and the other device transmits the image signal to the image converter; the image converter converts the original image signal into an analog image signal that the image decoder can process, and outputs the analog image signal to the image decoder; the image decoding Converting the analog video signal into a digital video signal, and transmitting the digital video signal to the video compressor; the audio decoder receives the analog audio signal collected by the microphone, converts the analog audio signal into a digital audio signal, and The digital sound signal is transmitted to the video compressor; the audio and video calendar (4) Compressing the digital audio signal and the digital video signal into the video a reduction, and transmitting the shadow = m to the injection H; the sound (4) transmitting the audio and video of the audio/video device _ difficult to store (4) When I broadcast the heart sound: the audio and video processor acquires the audio and video that needs to be transmitted and transmits the video and audio dragon broadcast that needs to be played to the audio and video (four) reducer; the video and audio solution (four) device will reduce the shadow (4) (four) and reduce it. The digital image signal and the digital sound h number are transmitted, and the restored digital sound signal is transmitted to the sound code, and the image signal is transmitted to the image code n; the sound (4) device converts the county sound signal into the analog sound signal. And transmitting the analog signal: 098130468 Form No. A0I01 Page 5 of 20 0982052284-0 201110697 The speaker plays; and the image encoder converts the restored digital image signal into the original image signal, the original image The signal is output to the display device for playback via the image switcher. [0006] A method for recording and playing video and audio, in the process of recording video and audio, comprising the steps of: the image splitter divides the original image signal output by the computer into multiple channels, one of which is transmitted to the display device for display by the image switcher, and the other is transmitted to the image. a converter; the image converter converts the original image signal into an analog image signal that the image decoder can process, and outputs the analog image signal to the image decoder; the image decoder converts the analog image signal into a digital image signal, and the image converter The digital image signal is transmitted to the video compressor; the sound decoder receives the analog sound signal collected by the microphone, converts the analog sound signal into a digital sound signal, and transmits the digital sound signal to the video sound compressor; the video sound compressor transmits the digital sound signal And the digital image signal is compressed into a video compression file, and the audio and video compressed file is transmitted to the audio and video processor; and the audio and video processor stores the video and audio compressed file into the storage device; or when playing the video and audio, the steps include: the audio and video processor acquires the need Video and audio pressure The file and the audio and video compressed file to be played are transmitted to the video decompressor; the audio and video decompressor decompresses the video and audio compressed file to be played back, and restores the digital video signal and the digital audio signal, and transmits the restored digital audio signal The sound encoder transmits the restored digital image signal to the image encoder; and the sound encoder converts the restored digital sound signal into an analog sound signal, and transmits the analog sound signal to the speaker for playing, and the image encoder will restore The digital image signal is converted into the original image signal, and the original image signal is output to the display device via the image switcher for transmission 098130468 Form No. A0101 Page 6 / Total 20 pages 0982052284-0 201110697. [0009] [0009] [0010] ❹ This month and month b is enough to record any scene image and live sound recorded by the computer, which is convenient to use, widely used, and can conveniently play audio and video. [Embodiment] Referring to Figure 1, there is shown a system architecture diagram of a preferred embodiment of the video recording and playback system of the present invention. The shirt recording and playback system 1 () is connected to a computer n, a display device 12, a microphone 3 viewing shoulder 14, a network 15, and a speaker 16. The display 12 includes a display 11 and a color meter. The video recording and playback system 10 includes an image splitter (10), a video switcher 1 (2), a video converter 1〇4, a video decoder 106, a video and audio reducer 108, and a sound decoder 110 to a processor 112. The storage device 114, the video decompressor 116, the audio encoder 118, and the video encoder 丨2〇. The image splitter 1 分成 divides the original image signal output by the computer u into multiple channels, wherein the channel is transmitted to the display device 12 via the image switcher 1〇2 for display, and the other is transmitted to the image converter 1〇4. In this embodiment, the original image signal is a graphic array (array) signal. The original image signal may also be an image signal of other formats, such as a digital visual interface (DVI) signal or a high-definition multimedia interface (耵_

Definition Multimedia Interface, HDMI) signal. The image converter 104 converts the original image signal into an analog image signal that the image decoder 106 can process, and outputs the analog image signal 098130468 Form No. A0101 Page 7 / Total 20 Page 0892052284-0 [0011] 201110697 Decode nm. In the implementation, the image conversion=received original image signal (for example, VGA signal) is converted into a composite image. The image signal is converted into a (4) 1G4 image, and the original image signal can be converted into a similar analog image signal, such as a separate image ( Separ, ',,, video, s-video) signals. e It should be understood that if the computer 11 outputs an image signal that the image decoder 106 can output, the image converter 104 may not be needed. At

The video decoder has just converted the analog video signal into a digital video signal and transmits the digital video signal to the video compressor 1〇8. In this embodiment, the video decoder 1 (6) converts the analog video signal into an 8-bit digital video signal. The image decoder 106 can also convert the analog image signal into a digital image signal of another format, such as a 位0 bit, a u bit, or a 2-bit digital image signal. The sound decoder 110 just receives the analog sound signal collected by the microphone 13, converts the analog sound signal into a digital sound message, and the digital sound is

The audio signal is transmitted to the video compressor (10). The microphone 13 collects the sound of the recording site. The video and audio reducer 108 compresses the digital audio signal and the digital video signal into a video compression file by using a reduction algorithm, and transmits the video compression file to the video processor 112. In the present embodiment, the video compressor 108 employs a moving picture expert group (MPEG) compression algorithm such as MpEG i 'MPEG-2 and MPEG-4. Video compression files have a small amount of data for easy storage and transmission. In this embodiment, the video compressor 1〇8 is also 098130468 Form No. A0101 0982052284-0 201110697 "4=Receives the image of the recording scene captured by the camera 14, and the camera 1 like:::image and sound decoder η The transmitted digital audio signal: and the digital video signal transmitted by H06 together with the machine "by the audio and video processor Μ - like: Da,, shirt audio compressor 1 〇 8 ^ 呀 [0016] Ο [0017] 1 recording , f 彡 彡 心 如 如 如 如 如 如 如 如 如 如 如 如 如 如 如 如108 transmission W1❻T _ storage device 114 said audio and video processing (4) 2 can also be used to listen to the audio and video through the network 15 (10) shrink files also go to the ‘Yu Da, 衫 3 压 钟 备 备 114 114 114 114 114 114 114 114 114 114 114 114 114 114 114 114 114 114 114 114 114 114 114 114 114 114 114 114 114 114 114 114 114 114 114 114 114 114 114 114 114 114 114 114 114 114 114 114 114 114 114 114 114 114 114 114 Also prepared, such as a remote computer. Ϊ = The audio/video processor 112 receives the video and audio file to be played from the remote device by the clerk 15 or reads the video and audio compression to be played from the snoring device ι 4 (4), and transmits the video and audio compression file to be played. Give the audio and video (four) reducer 116.

[0018] The shadow release buffer 116 uses a decompression algorithm, and the video and audio decompressor 116 is required to play the video and audio signals, and the video signal and the digital sound θ 4 . The restored digital sound « is transmitted to the sound encoder 118, and the digital video signal of the ride is transmitted to the image encoder 12A. [0019] The sound day processor 118 converts the restored digital sound signal into analog sound money and transmits the analog sound signal to the speaker ^ to play the image code 2 to convert Wei's digital image to original Image Richness 'The original image signal is output to the display 098130468 via the image switcher ι2. Form 682 A0101 Page 9/Total 2 Page 0982052284-0 [0020] 201110697 Device 13 plays. [0022] Referring to FIG. 2, a flow chart of a preferred embodiment of the method for recording and playing video and audio according to the present invention is shown. In step S200, it is determined whether it is necessary to record video or audio. If the movie is recorded, then steps S201-S206 are performed; if the video is played, steps S207-S209 are performed. In step S201, the image splitter 1〇〇 divides the original image signal outputted by the computer 1 into multiple channels, one of which is transmitted to the display device 12 via the image switcher 1〇2 for display, and the channel is transmitted to the image converter 1〇. 4. In the embodiment of the present invention, the original image signal is a vide〇 gravies array (VGA) signal. The original image signal may also be an image signal of another format, such as a digital visual interface (DVI) signal or a high definition multimedia interface (

Hi-Definition Multimedia Interface, HDMI) signal. Step S202, the material converter 104 converts the original image signal into an analog image signal that the image decoder 106 can process, and outputs the analog image to the image decoder 1〇6. In this embodiment, the image converter 104 converts the received original image signal (such as a VGA signal) into a composite image signal. The image converter 104 can also convert the original image signal into analog video signals of other formats, such as a separate image (s), a separate image (s), a sprint image, a singular image (single a r a t e v i d e 〇 s s - V i d e 〇 ) signal. Step S203 'Image decoder! The analog image signal is converted into a digital image signal, and the digital image signal is transmitted to the video compressor 1〇8. In the 098130468 form nickname A0101 page 10 / total 20 page 0982052284-0 [0025] 201110697 [0026] In this embodiment, the video decoder 1 〇 6 8-bit digital video signal. The image is converted into the image decoder 106, and the image signal can be converted into a digital signal of another format, such as a meta, 16-bit or 2-bit digital video signal. In step (4), the sound decoder (1) receives the analog sound collected by the microphone 13, and converts the analog sound signal into a digital sound signal. The digital sound signal is transmitted to the video compressor (10). The microphone sets the sound of the recording scene. [0027] Step S2D5, the video compressor just adopts a compression algorithm to reduce the digital audio signal and the digital video image into a video compression broadcast, and transmits the video compression audit file to the video processor 112β. In an embodiment, the video compressor 108 employs a moving graphics experts grampup (MpEG) compression algorithm such as MPEG-1, MPEG-2, and MPEG-4. The audio and video pressure tank broadcast has a small amount of Ο-bay material to facilitate storage and transmission. In the embodiment, the video compressor 108 also receives the image of the recording scene captured by the camera 14 and the image captured by the camera 14 The sound decoder, the digital audio signal transmitted by the 11 以及 and the digital video signal transmitted by the image decoder 106 are compressed into a video compression slot. The camera 14 transmits the captured image to the video compressor 108 via the audio/video processor 112. [0028] Step S206, the video processor 112 stores the video compression file in the storage device 114. In addition, the audio/video processor 112 can also transmit the video compression file transmitted by the video compressor 108 or the video compression file stored in the storage device 114 to the remote device, such as a remote computer, via the network 15. 098130468 Form No. 1010101 Page 11/Total 20 Huang 0892052284-0 201110697 [0029] Step S207, the AV processor 112 reads the video compression file to be played from the storage device 114, and transmits the video compression file to be played to the video solution. Compressor 116. In other embodiments, the AV processor 112 can also receive the video compression file to be played from the remote device via the network 15. [0030] Step S208, the video decompressor 116 uses a decompression algorithm to decompress the video compression file that needs to be played, recovers the digital video signal and the digital audio signal, and transmits the restored digital audio signal to the sound coding. The device 118 transmits the restored digital image signal to the image encoder 120. [0031] Step S209, the sound encoder 118 converts the restored digital sound signal into an analog sound signal, and transmits the analog sound signal to the speaker 16 for playing. At the same time, the image encoder 120 converts the restored digital image signal into original The image signal is output to the display device 13 via the image switcher 102 for playback. [0032] In summary, the present invention complies with the requirements of the invention patent and submits a patent application according to law. The above is only the preferred embodiment of the present invention, and the scope of the present invention is not limited to the above-described embodiments, and equivalent modifications or variations made by those skilled in the art in light of the spirit of the present invention are It should be covered by the following patent application. BRIEF DESCRIPTION OF THE DRAWINGS [0033] FIG. 1 is a system architecture diagram of a preferred embodiment of a video recording and playback system of the present invention. 2 is a flow chart of a preferred embodiment of a method for recording and playing video and audio according to the present invention. 098130468 Form No. A0101 Page 12 of 20 0982052284-0 201110697 ❹ ❹ [Main Symbol Description] [0035] Video Recording and Playback System 10 [0036] Computer 11 [0037] Display Device 12 [0038] Microphone 13 [0039] ] Camera 14 [0040] Network 15 [0041] Speaker 16 [0042] Image Splitter 100 [0043] Image Switcher 102 [0044] Image Converter 104 [0045] Video Decoder 106 [0046] Video Compressor: S \ in 108 1 ί [0047] Sound Decoder 110 [0048] Video Processor 112 [0049] Memory Device 114 [0050] Video Decompressor 116 [0051] Sound Encoder 118 [0052] Image Encoder 120 [0053] Recording audio and video or playing video S200 Form No. A0101 Page 13 of 20 098130468 0982052284-0 201110697 [0054] Dividing the original image signal into multiple channels S201 [0055] Converting the original image signal into analog video signal S202 [0056] Analogy The image signal is converted into a digital image signal S203 [0057] The analog sound signal is converted into a digital sound signal S204 [0058] The digital image signal and the digital sound signal are compressed into video compression Case S205 [0059] Store video compression file S206 [0060] Read video compression file S207 ^ [0061] Restore digital video signal and digital audio signal S208 [0062] Convert digital audio signal into analog audio signal and play, digitally Convert image signal to original image signal and play S209

II 098130468 Form No. A0101 Page 14 of 20 0982052284-0

Claims (1)

201110697 VII. Application for Patent Park: 1. A video recording and playback system, connected with the speaker 5|phase, gold _. "'s display device, microphone and speaker, the system includes image sharing meal and converter , video decoder, video switcher, video processor, storage device, ~ sound decoder, audio and video device, wherein, when recording video: sonar encoder and video encoding 7 image_电__ The image transmission is transmitted from the image switcher to the display device for display and transmission to the image converter; the image converter converts the original image signal into an analog image that the image numerator can process, and the image The class* is outputted to the image decoding as., the image decoder converts the analog image signal into a digital image signal, and transmits the digital image signal to the video compressor; 〇 the sound decoder receives the microphone The collected analog voice signal 'converts the analog sound signal into a digital sound signal g, and transmits the digital sound signal to the video sound compressor; '-., J, the video and audio The compressor compresses the digital audio signal and the digital video signal into a video compression file, and transmits the video compression file to the audio and video processor; the audio and video processor stores the video compression file transmitted by the video compressor into the storage device; During video and audio: the video processor obtains the video compression file to be played and transmits the video compression file to be played to the video and audio retractor; the video decompressor decompresses the video and audio files that need to be played, The digital image signal and the digital sound signal are restored from 098130468 Form No. A0101, page 15 / 20 pages 0982052284-0 201110697, and the restored digital sound signal is transmitted to the sound encoder, and the restored digital image signal is transmitted to the image code. The sound encoder converts the restored digital sound signal into an analog sound signal, and transmits the analog sound signal to the speaker for playing; and the image encoder converts the restored digital image signal into the original image signal, The original image signal is output via the image switcher Display device to play. 2. The video recording and playback system of claim 1, wherein the original video signal is a graphics array signal. 3. The video recording and playback system according to claim 1, wherein the video compressor receives the image captured by the camera when recording the video, and transmits the image captured by the camera and the digital audio signal transmitted by the sound decoder. And the digital image signals transmitted by the image decoder are compressed into a video compression file. 4. The video recording and playback system according to claim 1, wherein the audio and video processor compresses the audio and video compressed file transmitted by the audio/video compressor or the audio and video compression stored in the storage device through the network when recording the video and audio. The file is transferred to the remote device. 5. The video recording and playback system according to claim 1, wherein the audio/video processor receives a video compression file to be played from a remote device through a network when playing audio and video, or reads from a storage device. The audio and video compression file that needs to be played to obtain the video compression file that needs to be played. 6. A video recording and playing method, when recording video and audio, the steps include: The image splitter divides the original image signal output by the computer into multiple channels, one of which is transmitted to the display device through the image switcher for display, and the other pass 098130468 form No. A0101 Page 16 of 20 0982052284-0 201110697 is sent to the image converter; the image converter converts the original image signal into an analog image city that the image deblocker can process, and outputs the image to the image decoder. And the image decoder converts the analog image signal into a digital image minus, and transmits the digital image signal to the video compressor; = 曰 马 H H H receiving microphone to collect the ray sound signal, the analog sound « The apostrophe is converted into a digital sound signal, and the digital sound signal is transmitted to the video compressor; the I 曰 compressor compresses the digital sound signal and the digital video signal into a video compressed file, and transmits the video compressed file to the audio and video processing. And the processor will compress the audio and video file storage device; or when playing video and audio, the steps include: the audio and video processor obtains the video and audio file to be played, and transmits the video and audio file to be played to the audio and video decompression Device The video decompressor decompresses the shadow 7-sound compressed file that needs to be played, restores the digital video signal and the digital sound nickname, and transmits the restored digital audio signal to the sound encoder, and transmits the restored digital image signal to the image. The encoder 3 and the sound 3 encoder convert the restored digital sound signal into an analog sound signal, and transmit the analog sound signal to the speaker for playing, and the image maser converts the restored digital image signal into the original image signal, the original The image signal is output to the display device for playback via the image switcher. The method for recording and playing video and audio according to claim 6, wherein the original image signal is a graphic array signal. 098130468 The method for recording and playing video and audio as described in item 6 of the patent application, Form No. Α0101, page 17 of 20, when recording video recordings of 0982052284-0 201110697, the steps include: the video compressor receives the image captured by the camera, and The image captured by the camera is compressed into a video compression file together with the digital audio signal transmitted by the sound decoder and the digital video signal transmitted by the video decoder. 9. The method for recording and playing video and audio according to claim 6 of the patent application, the method further comprises the steps of: recording, by the audio and video processor, the video compression file transmitted by the audio/video compressor or the video and audio compression stored in the storage device by using the network. The file is transferred to the remote device. 10. The method for recording and playing video and audio according to claim 6, wherein the audio/video processor receives the video compression file to be played from the remote device through the network, or reads the required playback from the storage device. The audio and video compression file is used to obtain the video compression file that needs to be played. 098130468 Form No. A0101 Page 18 of 20 U 0982052284-0