CN202076005U - Multimedia player with projecting function - Google Patents

Abstract

The utility model discloses a multimedia player with a projection function, which comprises a microprocessor, a memory connected to the microprocessor, a display screen and an audio playback device, and the multimedia player also includes a miniature projector for projecting received video signals , the micro-projector and the microprocessor are connected. The utility model enables the user to project large-sized pictures and lyrics signals around the user while using the portable multimedia player, increases the image display of the user's surrounding environment, and makes the user feel personally on the scene.

Description

Multimedia player with projection function

technical field

The utility model relates to a multimedia player, in particular to a multimedia player with projection function.

Background technique

The multimedia players in the prior art include devices such as MP3 players and video players. These multimedia players are small in size and convenient for users to carry around, so they are very popular.

But the multimedia player under the prior art is for example: MP3 can only play the audio file, and the video player can only play the video player. Therefore, the enjoyment that the multimedia player under the prior art brings to the user is relatively simple, and the user cannot cause the image rendering of the surrounding environment through the multimedia player, and the user does not have the feeling of being on the scene.

Therefore, there are defects in the prior art and need to be further improved and developed.

Utility model content

The purpose of the utility model is to provide a multimedia player capable of providing users with rendering of surrounding environment images.

The technical scheme of the utility model is as follows:

A multimedia player with a projection function, including a microprocessor, a memory connected to the microprocessor, a display screen and an audio playback device, wherein the multimedia player also includes a micro-projector that will receive video signals and project them, The micro projector is connected with the microprocessor.

Said multimedia player, wherein said micro-projector includes LED light source, display chip and projection lens; said light source is connected to microprocessor through light source control module, and said display chip is connected to microprocessor.

Said multimedia player, wherein said micro-projector includes a laser light source for scanning received video signals, and also includes a rotating device for reflecting and imaging the scanning laser beam, and said laser light source is connected to said microprocessor.

Said multimedia player, wherein said audio playing device includes an audio decoder connected to a microprocessor for audio decoding, and also includes a digital-to-analog converter, an amplifier and a speaker.

The multimedia player further includes a frequency selector and a display speed controller, the frequency selector is connected to the audio player and the frequency selector, and the display speed controller is connected to the microprocessor and the display chip.

The multimedia player further includes a synchronizer arranged between the display speed controller and the audio playback device.

The multimedia player further includes a video decoder, the video decoder includes a first video signal output interface and a second video signal output interface, the first video signal interface is connected to the display screen, and the second The video signal interface is connected to the display chip.

The multimedia player, wherein it also includes a first video decoder connected to the microprocessor and a second video decoder, the first video decoder is connected to the display screen, and the second video decoder is connected to Display chip.

The multimedia player, wherein, the display screen is arranged on the front of the multimedia player casing, and the projection lens or the rotating device is arranged on the back of the casing.

Compared with the prior art, the utility model provides a multimedia player with a projector function. A micro-projector is set on the multimedia player, and large-sized images and lyrics signals are projected by the micro-projector; At the same time as the portable multimedia player, it can project large-sized pictures and lyrics signals around the user, increasing the image display of the user's surrounding environment, so that the user has an immersive feeling.

Description of drawings

Fig. 1 is the composition structural diagram of the utility model MP3;

Fig. 2 is the outline structure schematic diagram of the utility model belt miniature projector MP3;

Fig. 3 is a composition structure diagram of the video playback device of the present invention;

Fig. 4 is a schematic diagram of the appearance structure of the utility model with a miniature projector video playback device;

Fig. 5 is the structure diagram of the MP3 of the utility model laser light source used as the light source of the miniature projector.

Detailed ways

Below in conjunction with accompanying drawing, preferred embodiment of the utility model is described in further detail.

The multimedia player with projector function provided by the utility model includes MP3100 and video player 200 .

Described MP3100 is audio player, as shown in Figure 1, comprises microprocessor 101, memory 102 and display screen 103 that are connected on microprocessor 101; Comprises the audio decoder that is connected on described microprocessor 101, The audio decoder sends the decoded audio signal to the digital-to-analog converter, and the digital-to-analog converter converts the received audio signal into an analog signal, and sends the analog signal to the amplifier, and the amplifier converts the amplified The sound current signal is sent to the speaker for playback.

The MP3100 also includes a micro projector, and the micro projector includes a light source 106 , a display chip 107 and a projection lens 108 . The light source control module 109 of the MP3100 is connected to the microprocessor 101 and the light source 106 , and the microprocessor 101 controls the change of the intensity of the light source 106 through the light source control module 109 . The microprocessor 101 is connected to the display chip 107, and sends the text signal or graphic signal of the lyrics in the memory 102 to the display chip 107. The micro projector utilizes the light from the light source 106 to project the characters or graphics on the display chip 107 through the projection lens 108 .

The MP3100 of the utility model can also present the projected lyrics or graphics with the effect of dynamic changes with the music, so that the MP3 can increase the effect of the dynamic changes of the surrounding projected images. Specifically, the MP3100 adds a frequency selector 104 and a display speed controller 105 . The frequency selector 104 detects the audio signal in real time. Specifically, it can detect the audio signal before decoding or the audio signal after decoding, and detect the frequency of the playing sound from the audio signal. The frequency selector 104 is connected to the circuit between the microprocessor 101 and the audio decoder, or connected to the circuit between the audio decoder and the digital-to-analog converter. The display speed controller 105 is connected with the microprocessor 101 and the frequency selector 104, and is connected with the display chip 107, and the display speed controller 105 controls the lyrics text according to the frequency of the sound data detected by the frequency selector 104 The playback speed of the signal or graphics signal. The MP3100 may also include a synchronizer, which is used to connect the display speed controller and an audio playback device, and the synchronizer is used for synchronous playback of projected image signals and audio signals, so that lyrics or graphics and audio signals are played synchronously. The audio playback device includes an audio decoder, a digital converter, an amplifier or a loudspeaker.

The MP3100 adjusts the frequency of the projected lyrics signal or graphics signal according to the frequency of the playing sound, so that the MP3 projects lyrics or graphics that change with the frequency of the playing sound, and changes the image of the surrounding environment when the user uses the MP3.

The display screen 103 of the present utility model is arranged on the front of the MP3100 shell, and the projection lens 108 of the micro-projector is arranged on the back of the shell. Like this, it is convenient for the MP3 to project lyrics or images dynamically changing with the song frequency within the line of sight of the user.

The video player 200 of the present invention, as shown in FIG. 2 , differs from MP3 in that it includes a video decoder. The video player includes a first video decoder 110A arranged between the display screen 103 and the microprocessor 101 , and a second video decoder 110B arranged between the microprocessor 101 and the display chip 107 . The video player 200 can decode the picture or video in the memory through the second video decoder 110B and then project it through the display chip 107 . The display speed controller 105 is set on the circuit between the second video decoder 110B and the display chip, or on the circuit between the microprocessor 101 and the second video decoder 110B, for according to the frequency The selector 104 detects the sound frequency to control the playback speed of the picture or video to be projected by the display chip 107 .

The video player 200 may also include a video decoder, the video signal played on the display screen is a first video signal with a logo, and the picture or video signal to be played by the projector is a second video signal with a logo. Signal. The video decoder includes a first video signal output interface and a second video signal output interface, distinguishes the first video signal from the second video signal according to the signs, and sends the decoded first video signal to the The display screen 103 sends the decoded second video signal to the display chip 107 through the second video signal interface. The display speed controller 105 is arranged between the second video signal output interface and the display chip 107 . The video decoding device is connected to the display screen 103 through a first video signal output interface.

The display screen 103 of the video player 200 is arranged on the front of the casing, and the projection lens 108 is arranged on the back of the casing. In this way, it is convenient for the video player 200 to project pictures or videos within the user's field of vision when the user watches the display screen 103, allowing the user to enjoy the projected large dynamic pictures or videos along with the frequency of the sound played by the video player.

In the multimedia player, the light source of the micro projector can be an LED light source, and the display chip can be an LCoS chip or a DMD chip.

The utility model also provides a multimedia player whose micro-projector light source is a laser light source. Taking MP3 as an example, as shown in Figure 5, the micro-projector includes a laser light source 111 and a rotating device 112, and the display speed controller 105 is connected with the laser light source 111 of micro projector. The video signal received by the laser light source 112 is scanned according to the brightness and scanning information of the three primary colors in the video signal, which may include scanning from top to bottom and scanning from left to right; the rotating device 112 will receive The scanning light laser is reflected and imaged, and the image is imaged on the screen to form projected text or graphics. The video playing device may also adopt the micro-projector above including a laser light source, which will not be repeated here.

The multimedia player with projection function provided by the utility model controls the speed at which the micro-projector display chip plays the video signal by collecting the frequency of the sound signal, so that the image projected by the multimedia player changes with the frequency of the playing sound. The miniature projector projects lyrics, graphics, pictures or videos on a large screen, putting users in dynamically changing images and bringing users more enjoyment.

It should be understood that the above descriptions for the preferred embodiments of the utility model are relatively detailed, and should not be considered as limiting the scope of protection of the patent of the utility model. The scope of protection of the patent of the utility model should be based on the appended claims.

Claims (9)

1. A multimedia player with a projection function, comprising a microprocessor, a memory connected to the microprocessor, a display screen and an audio playback device, characterized in that, the multimedia player also includes a device that will receive video signal projection A micro-projector, the micro-projector is connected to the microprocessor. 2. The multimedia player according to claim 1, wherein the micro-projector comprises an LED light source, a display chip and a projection lens; the light source is connected to the microprocessor through a light source control module, and the display chip connected to the microprocessor. 3. The multimedia player according to claim 1, wherein the micro-projector includes a laser light source that scans the received video signal, and also includes a rotating device that scans the reflected laser beam, and the laser light source and The microprocessor connection. 4. according to the described multimedia player of claim 2 or 3, it is characterized in that, described audio playback device comprises the audio decoder for audio decoding that is connected on the microprocessor, also comprises digital-to-analog converter, amplifier and speaker. 5. The multimedia player according to claim 4, further comprising a frequency selector and a display speed controller, the frequency selector is connected to the audio playback device and the frequency selector, and the display speed controller is connected to Microprocessor and display chip. 6. The multimedia player according to claim 5, further comprising a synchronizer disposed between the display speed controller and the audio playback device. 7. The multimedia player according to claim 4, further comprising a video decoder, said video decoder comprising a first video signal output interface and a second video signal output interface, said first video signal interface connected to the display screen, and the second video signal interface is connected to the display screen chip. 8. The multimedia player according to claim 4, further comprising a first video decoder and a second video decoder connected to the microprocessor, the first video decoder is connected to a display screen, The second video decoder is connected to a display chip. 9. The multimedia player according to claim 4, wherein the display screen is arranged on the front of the housing of the multimedia player, and the projection lens or the rotating device is arranged on the back of the housing.

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