CN104219430A - Mobile phone camera - Google Patents

Abstract

The invention provides a mobile phone camera. The mobile phone camera comprises a first camera which is arranged on the front side of a mobile phone, a first light sensing element which is arranged on the backside of the mobile phone and is used cooperatively with the first camera, a first DA converter which is connected to the first light sensing element and converts an analogue electric signal output by the first light sensing element into a digital signal, an image processing module which receives an image signal output by the first camera and converts the image signal into a digital signal, a dimming module which receives the digital signal of the first DA converter and outputs a dimming signal based on a pre-stored data table, and an image synthesis module which is connected with the image processing module and the dimming module, synthesizes output signals of both the image processing module and the dimming module, synthesizes the image signal of the first camera and the dimming signal of the first light sensing element and outputs an image signal after subjected to dimming.

Description

A kind of mobile phone camera

Technical field

The present invention relates to electronic technology field, refer to a kind of camera especially.

Background technology

Since First camera is in the world born, being just doomed camera will change life and the history of the mankind.Camera is called for short camera, is that a kind of optical imaging concept that utilizes forms image and uses the equipment of negative writing image.

The light that subject reflects, after being focused on by photographic film and the shutter controlling exposure, the photosensitive material of subject in camera bellows forms sub-image, through rinsing the permanent image of process formation.Camera architecture is the earliest very simple, only comprises camera bellows, camera lens and photosensitive material.Modern camera more complicated, there is camera lens, aperture, shutter, find range, find a view, light-metering, film trasport, counting, auto heterodyne, focusing, the system such as zoom, modern camera is a kind of complex product in conjunction with technology such as optics, precision optical machinery, electronic technology and chemistry.

Digital camera is that a kind of electronic sensor that utilizes converts the camera of electronic data to optical image.Different from the principle that ordinary camera carrys out document image by the chemical change of silver bromide on film, the transducer of digital camera is a kind of Charged Couple (CCD) or complementary metal oxide semiconductors (CMOS) (CMOS) of photoinduction formula.Before image transmitting to computer, usually can first be stored in digital storage equipment.

Mobile phone and camera are born combinations, and along with the development of software and hardware, the shooting effect of mobile phone camera, more and more close to mm professional camera special, the especially Self-timer of mobile phone camera, mm professional camera special is incomparable especially.The moment of mobile phone camera, the main experience by user oneself operates, and due to shooting angle and the restriction of taking posture, causes the light filling operation of auto heterodyne moment photo to optimize.

Summary of the invention

The present invention proposes a kind of mobile phone camera, solves in prior art because the restriction of shooting angle and posture, photo light filling operate the problem that cannot optimize.

Technical scheme of the present invention is achieved in that

A kind of mobile phone camera, comprising: be arranged on first camera in mobile phone front and be arranged on first photo-sensitive cell at the mobile phone back side, described first photo-sensitive cell and the first camera with the use of;

First D/A converter, be connected to described first photo-sensitive cell, the analog electrical signal exported is converted to digital signal;

Image processing module, receives the picture signal that described first camera exports, is converted into digital signal;

Light-adjusting module, receives the digital signal of described first D/A converter, exports dim signal according to the tables of data prestored;

Image synthesis unit, is connected to described image processing module and light-adjusting module, the output signal of the two is synthesized, and the picture signal of the first camera and the dim signal of the first photo-sensitive cell synthesize, and export the picture signal through light modulation.

The invention has the beneficial effects as follows:

By be arranged on the photo-sensitive cell of other side and camera with the use of, the picture signal of take camera and dim signal synthesize, and export the image through light modulation, the color and luster of image is optimized.

Accompanying drawing explanation

In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.

Fig. 1 is the control block diagram of mobile phone camera of the present invention.

Embodiment

Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.

As shown in Figure 1, a kind of mobile phone camera of the present invention, comprising: be arranged on first camera 11 in mobile phone front and be arranged on first photo-sensitive cell 12 at the mobile phone back side, described first photo-sensitive cell 12 and the first camera 12 with the use of; First D/A converter 31, be connected to described first photo-sensitive cell 12, the analog electrical signal exported is converted to digital signal; Image processing module 43, receives the picture signal that described first camera 11 exports, is converted into digital signal; Light-adjusting module 42, receives the digital signal that described first D/A converter 31 exports, exports dim signal according to the tables of data prestored; Image synthesis unit 43, is connected to described image processing module 41 and light-adjusting module 42, the output signal of the two is synthesized, and the picture signal of the first camera 11 and the dim signal of the first photo-sensitive cell 12 synthesize, and export the picture signal through light modulation.

Above-mentioned image processing module 41, light-adjusting module 42 and image synthesis unit 43 can adopt discrete structure to realize, and namely select 3 chip blocks, and pass through the function of the circuit realiration Images uniting taken outward; Image processing module 41, light-adjusting module 42 and image synthesis unit 43 also can adopt integrated structure to realize, and namely realize image processing module 41, light-adjusting module 42 and image synthesis unit 43 by the internal processes of DSP circuit.

Preferably, described dsp chip is TMS320DM642 chip.

TMS320DM642 is fixed DSP up-to-date in TI company C6000 series DSP, its core is C6416 type high-performance digital signal processor, there is extremely strong handling property, the flexibility of height and programmability, periphery is integrated with equipment and the interfaces such as very complete audio frequency, video and network service simultaneously.

TMS320DM642 chip comprises: 3 configurable video ports (VPORT0-2) can realize seamless link with general video coding and decoding device, support various video resolution and video standard, support RAW video input/output, transport stream mode; 1 10/100Mb/s Ethernet interface (EMAC), meets IEEE 802.3 standard; 1 multichannel band buffered audio serial port (McASP), supports the audio format such as I2S, DIT, S/PDIF, IEC60958-1, AES-3, CP-430; 2 multichannel band Buffered Serial Port (McBSP), adopt RS232 level to drive; 1 VCXO interpolation control unit (VIC), supports that audio/video is synchronous; 1 32,66M hertz, the master/slave pci interface of 3.3V, follow PCI2.2 specification; 1 configurable 16/32 host interface (HPI) of user; 1 16 general input/output port (GPIO); 1 64 external memory interfaces (EMIF), can with most of asynchronous memory (SRAM, EPROM) and synchronous memories (SDRAM, SBSRAM, ZBT SRAM, FIFO) seamless link, maximum addressable external memory storage space is 1024MB; 1 enhancement mode direct memory access controller (EDMA) with 64 autonomous channels, tunnel; 1 data management input/output module (MDIO); 1 I2C bus module; 3 32 general purpose timers; 1 jtag interface and daughterboard interface etc. meeting IEEE 1149.1 standard.

The present invention by be arranged on the photo-sensitive cell of other side and camera with the use of, the picture signal of take camera and dim signal synthesize, and export the image through light modulation, the color and luster of image is optimized.

The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.

Claims (1)

1. a mobile phone camera, is characterized in that, comprising: be arranged on first camera in mobile phone front and be arranged on first photo-sensitive cell at the mobile phone back side, described first photo-sensitive cell and the first camera with the use of;

First D/A converter, be connected to described first photo-sensitive cell, the analog electrical signal exported is converted to digital signal;

Image processing module, receives the picture signal that described first camera exports, is converted into digital signal;

Light-adjusting module, receives the digital signal of described first D/A converter, exports dim signal according to the tables of data prestored;

Image synthesis unit, is connected to described image processing module and light-adjusting module, the output signal of the two is synthesized, and the picture signal of the first camera and the dim signal of the first photo-sensitive cell synthesize, and export the picture signal through light modulation.