CN104980606A - Apparatus for wireless transmission system and program thereof - Google Patents
Apparatus for wireless transmission system and program thereof Download PDFInfo
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Abstract
The invention provides a device of a wireless transmission system and a program thereof, which comprises a display device and a shooting device. The display device modulates a plurality of external image data according to the file data to be transmitted to generate a plurality of image transmission data, the shooting device shoots the played plurality of image transmission data and calculates the sum of visible light energy intensity values of unit signal periods of the image transmission data, and the file data can be obtained by decoding, and the sum of the visible light energy intensity values of each external image data in the signal periods is the same as the sum of the visible light energy intensity values of the image transmission data generated after the corresponding external image data is modulated in the signal periods. The device and the program of the wireless transmission system provided by the invention can achieve the aim of transmitting the file data without additionally increasing the power for transmitting the file data.
Description
Technical field
The present invention relates to a kind of wireless transmitting system, espespecially a kind of device of the wireless transmitting system by transmission of visible light and program thereof.
Background technology
Because electronic installation is as notebook computer, panel computer, or smart mobile phone etc. is quite universal, user can utilize electronic installation to carry out transmission or the exchange of data at any time, and electronic installation is often with existing amplitude modulation, frequency modulation, or the mode of the Wireless microwave such as infrared ray transmission carries out the transmission of data, but use the restriction of Wireless microwave transmission Chang Yinqi frequency range to cause data transmission bauds slower, the longer time need be spent to transmit, and when using Wireless microwave transmission, electronic installation additionally must consume through-put power, when power limited must perform again several work simultaneously, extra power consumption easily makes electronic installation that the situation of data can occur because of underpower to transmit at any time, significantly increase the inconvenience of user.
No. 201237802nd, TaiWan, China publication discloses (light and shade are poor) such as the lightness of each pixel in a kind of flush mounting adjustment input picture, and is familiar with device by image mechanism and obtains the image after adjustment; No. 201120769th, TaiWan, China publication discloses a non-contact communication device and takes the non-contact communication device of another image data displaying, in the scope of the face shaping defined in user with image data described in identification or whether position comprises set information; No. 7199348th, United States Patent (USP) discloses a kind of digital camera with multiple photosensor arrays, and each photosensor arrays can the intensity the specific time of integration to the light of specific wavelength be sampled.
" background technology " paragraph is only used to help to understand content of the present invention, and the content therefore disclosed by " background technology " paragraph may comprise some and not form prior art known to person of ordinary skill in the field.In the content disclosed by " background technology " paragraph, do not represent described content or the one or more embodiment of the present invention problem to be solved, before the present patent application to know by person of ordinary skill in the field or cognitive.
Summary of the invention
The invention provides a kind of device and program thereof of wireless transmitting system, do not need the extra power increasing transmission file data, the object of transmission file data can be reached.
Other objects of the present invention and advantage can be further understood from the technical characteristic disclosed by the present invention.
For reaching one of above-mentioned or part or all objects or other objects, the present invention proposes a kind of display unit of wireless transmitting system in an embodiment, it is for passing through transmission of visible light file data, and above-mentioned display unit also comprises coding module and display module.Coding module is in order to receiving archives data and multiple external image data, and file data is converted in order to transmission of multiple cycle data, transmit external image data described in data-modulated according to the aforesaid cycle and produce multiple image transmission data in order, coding module is also connected with display module, and display module transmits data in order to receive aforesaid image and shows these images transmission data.Wherein to transmit the visible light energy intensity level summation of data within the signal period identical for the visible light energy intensity level summation of each external image data within a signal period and the image produced after corresponding external image data-modulated, and the signal period can be divided into multiple unit signal cycle.
The present invention also proposes a kind of filming apparatus of wireless transmitting system in another embodiment, and it is for by visible ray receiving archives data, and comprises taking module and decoder module.Taking module transmits data in order to the image taken shown by display unit and produces multiple image and receives data, taking module is also connected with decoder module, decoder module receives data in order to receive aforesaid image, and become multiple cycle to receive data these images reception data transaction in order, and receive data generation file data according to these cycles.
The present invention also proposes a kind of display routine of wireless transmitting system in another embodiment, for performing via computer loading procedure and relying on display module by transmission of visible light file data, it comprises program command (a), in order file data is converted to transmission of multiple cycle data, and program command (b), transmit data-modulated multiple external image data according to these cycles and produce multiple image transmission data in order, and maintaining the visible light energy intensity level summation of each external image data within a signal period and the corresponding image produced, to transmit the visible light energy intensity level summation of data within the aforesaid signal period identical.
The present invention coordinates above-mentioned display routine, a kind of photographing program of wireless transmitting system is also proposed in another embodiment, it is for performing via computer loading procedure and relying on taking module by visible ray receiving archives data, it comprises follow procedure instruction: program command (c), in order image being received data transaction becomes multiple cycle to receive data, and program command (d), receive data according to these cycles and produce aforesaid file data.
According to the above, rely on after first file data defeated for tendency to develop being converted to transmission of multiple cycle data, transmit data-modulated aforesaid external image data according to these cycles again and transmit data to produce multiple image, and described image transmission data are sent to display module display, and the image reception data that captured image only need be transmitted data institute output by filming apparatus accumulate its visible light energy intensity level summation according to the unit signal cycle, the file data for receiving can be gone out by Xie Code according to this, and the visible light energy intensity level summation of each external image data within the signal period and the image produced after corresponding external image data-modulated to transmit the visible light energy intensity level summation of data within the signal period identical.Therefore display module only need be play the image after modulation and transmits data, do not need the extra power increasing transmission file data, the object of transmission file data can be reached, and the image after modulation transmits data because still keeping the visible light energy intensity level summation identical with before modulation within the signal period, therefore can carry out the transmission of file data when not affecting user's visual experience.The present invention can select each cycle to receive data by less pixel transmission, to improve data transfer rate according to user's demand again; Or by more pixel transmission, to improve the success rate that data transmit.
For above-mentioned feature and advantage of the present invention can be become apparent, special embodiment below, and coordinate appended view to be described in detail below.
Accompanying drawing explanation
Fig. 1 is the wireless transmitting system configuration diagram of one embodiment of the invention.
The display routine flow chart that Fig. 2 (a) is one embodiment of the invention.
The photographing program flow chart that Fig. 2 (b) is one embodiment of the invention.
Fig. 3 (a) transmits the schematic diagram of another embodiment of data for image of the present invention.
Fig. 3 (b) transmits the schematic diagram of another embodiment of data for image of the present invention.
Fig. 4 (a) is the schematic diagram of another embodiment of display module of the present invention.
Fig. 4 (b) is the schematic diagram of another embodiment of taking module of the present invention.
Fig. 5 (a) transmits the schematic diagram of another embodiment of data for image of the present invention.
Fig. 5 (b) transmits the schematic diagram of another embodiment of data for image of the present invention.
Fig. 6 (a) transmits the schematic diagram of another embodiment of data for image of the present invention.
Fig. 6 (b) transmits the schematic diagram of another embodiment of data for image of the present invention.
Symbol description
100 display unit
110 coding modules
111 time schedule controllers
120 display modules
200 filming apparatus
210 taking modules
220 decoder modules
221 time schedule controllers
300 outside sources
Embodiment
Aforementioned and other technology contents, feature and effect for the present invention, in the detailed description of the graphic preferred embodiment of following cooperation, can clearly present.The direction term mentioned in following examples such as: upper and lower, left and right, front or rear etc., is only the direction with reference to accompanying drawing.Therefore, the direction term of use is used to illustrate and is not used for limiting the present invention.
Refer to Fig. 1, Fig. 1 is the wireless transmitting system configuration diagram of the embodiment of the present invention, display unit 100 is for passing through transmission of visible light file data, it can be the devices such as liquid crystal display, plasma display, diode display, and display unit 100 also comprises coding module 110 and display module 120.Wherein, coding module 110 is connected with display module 120.Coding module 110 is in order to receive file data and multiple external image data such as message, word, picture from outside source 300, and described external image data can be also the film data such as a section of video signal data, cinematic data or program data.Can be gathered by least one display pixel on display module 120 due to shown image and be formed, so each external image data can comprise the displaying contents of this at least one display pixel.If each display pixel just only has a luminous element, then the displaying contents of this display pixel is exactly the sum data of the visible light energy intensity level sent needed for this display pixel; But, on many actual products, each display pixel may comprise multiple sub-pixel, and the use of light source for display of each pure color is provided respectively by these sub-pixels, now the displaying contents of aforesaid display pixel is exactly the light energy intensity value sum data of each sub-pixel in this display pixel.Red (R), green (G), blue (B) three primary colors sub-pixel is comprised for a display pixel, the displaying contents of a display pixel can comprise the visible light energy intensity level sum data sent needed for red primaries sub-pixel, the visible light energy intensity level sum data sent needed for green primary color sub-pixel, and the visible light energy intensity level sum data sent needed for blue primary sub-pixel.The present invention does not limit display pixel to be single display pixel or to comprise multiple sub-pixel.
Coding module 110 also comprises time schedule controller 111, and make coding module 110 can convert file data to transmission of multiple cycle data according to an order, wherein, it is one that each cycle transmits data volume, and this is in order to represent the state of 0 or 1.After the file data of reception is converted to transmission of multiple cycle data by coding module 110, then transmit external image data corresponding to data-modulated according to each cycle.In the present embodiment, one signal period can be divided into multiple unit signal cycle, therefore coding module 110 can transmit the visible light energy intensity level summation of external image data within the unit signal cycle corresponding to data-modulated according to each cycle, transmit data with the image produced in order to display.Coding module 110 produces aforesaid image and transmits after data, image is transmitted data and is sent to above-mentioned display module 120 and shows, and its display module 120 can have multiple display pixel and the image that simultaneously can show multiple file data transmits data.Wherein aforesaid visible light energy intensity level can represent by grey decision-making, and the visible light energy intensity level summation of external image data described in each within a signal period and the image produced after corresponding external image data-modulated to transmit the visible light energy intensity level summation of data within the signal period identical.
Embodiment one also comprises filming apparatus 200, and filming apparatus 200 is for passing through visible ray receiving archives data, and it can be the lens assembly being arranged at mobile device, notebook computer or panel computer.Filming apparatus 200 also comprises taking module 210 and decoder module 220, taking module 210 has multiple shooting pixel, it can be charge coupled cell (Charge-coupled Device, or the photo-sensitive cell such as complementary metal oxide semiconductors (CMOS) active pixel sensor (CMOS Active pixel sensor) CCD), data are transmitted in order to the image taken shown by aforementioned display 100, and producing image reception data according to this, taking module 210 is also connected with decoder module 220.Decoder module 220 receives data in order to receive image, it also has time schedule controller 221, make decoder module 220 can receive the visible light energy intensity level summation of data within the per unit signal period according to aforesaid order accumulation image, and the cycle that converts to according to this receives data, decoder module 220 receives data according to multiple cycles of conversion again and produces aforesaid file data.
Fig. 2 (a) and Fig. 2 (b) is embodiments of the invention two, refer to Fig. 2 (a), the display routine flow chart that Fig. 2 (a) is embodiment two, described display routine can load on computer and comprise following steps: step S21, and the file data that tendency to develop is first sent by the computer of loaded and displayed program converts transmission of multiple cycle data in order to.Transmit in data in these cycles, the data volume that each cycle transmits data is one, and in order to represent the state of 0 or 1.In step S22, judging that the cycle will transmitted at present transmits data is 0 or 1, if it is 0 that the cycle transmits data, then carries out step S23, otherwise carries out step S24.If judge, the cycle transmits data as 0 and perform step S23, coding module 110 described in Fig. 1 by corresponding external image data visible light energy intensity level summation maintain reset condition, namely not by the visible light energy intensity level summation mean allocation of external image data in multiple unit signal cycle; If judge, the cycle transmits data as 1, performs step S24, aforesaid coding module 110 by the visible light energy intensity level summation mean allocation of corresponding external image data in multiple unit signal cycle, wherein, aforesaid external image data and file data are that aforesaid computer is received by the outside source 300 described in Fig. 1.Coding module 110 then performs step S25 after performing step S23 or step S24, namely corresponding output image transmits data, aforesaid computer also transmits image and transmits display module 120 described in data to Fig. 1 and show, as step S26, when step S27, computer judges whether multiple cycles transmission data that aforesaid file data is changed all transmit complete, if not yet transmit complete, gets back to step S22 and continues to transmit next cycle transmission data, otherwise, terminate the flow process of display routine.
Refer to Fig. 2 (b), the photographing program flow chart that Fig. 2 (b) is embodiment two, described photographing program can load on computer and comprise following steps: in step S31, taking module 210 described in Fig. 1 transmits data in order to the image shown by shooting (reception) display module 120, and output image receives data according to this.In step s 32, the decoder module 220 described in Fig. 1 calculate the image that receives receive data its in the visible light energy intensity level summation of per unit signal period, carry out step S33 after having calculated.In step S33, decoder module 220 according to image receive data its visible light energy intensity level summation of per unit signal period judge image reception data light energy intensity value summation whether mean allocation is in the per unit signal period, whether the visible light energy intensity level summation in the namely per unit signal period identical.If the visible light energy intensity level summation in the per unit signal period is not identical, namely the visible light energy intensity level summation in unit signal cycle there is no mean allocation in the per unit signal period, then judge that the cycle receives data as 0, as step S34; If the visible light energy intensity level summation in the per unit signal period is identical, namely the visible light energy intensity level summation in unit signal cycle be mean allocation in the per unit signal period, judge the cycle receive data as 1, as step S35.After decoder module 220 performs step S34 or step S35, perform step S36, namely receive according to multiple cycles received in order the content that data decode goes out aforementioned file data.
Refer to Fig. 3 (a), Fig. 3 (a) is the embodiment one of aforesaid image transmission data, for image transmits the visible light energy intensity level summation schematic diagram of data within a signal period (the present embodiment is T), the described signal period comprises 2 unit signal cycles, and can be divided into the first unit signal cycle (figure left side 1/2T) and the second unit signal cycle (figure right side 1/2T).Image transmits data and also comprises the first sub-pixel (R), the second sub-pixel (G) and the 3rd sub-pixel (B), and its visible light energy intensity level summation there is no mean allocation in the per unit signal period.Fig. 3 (b) is image transmission DATA Example two, its visible light energy intensity level summation mean allocation in 2 unit signal cycles, namely the light energy intensity value of the first sub-pixel (R), the second sub-pixel (G) and the 3rd sub-pixel (B) all mean allocation in the per unit signal period.
Refer to Fig. 4 (a), Fig. 4 (a) is the embodiment schematic diagram of aforesaid display module 120.In the present embodiment, display module 120 is 2x2 display pixel, it comprises I, II, III and IV display pixel, but not as limit, it transmits data in order to show above-mentioned described image, and the described image that each display pixel can show different file data transmits data, so the described image that can transmit at most four groups of different file datas transmits data simultaneously.Fig. 4 (b) is the embodiment schematic diagram of aforesaid taking module 210, in the present embodiment for 4x4 takes pixel, and may correspond to above-mentioned display module 120 and divide into region I, II, III and IV, but not as limit, taking module 210 is that the described image taken shown by display module 120 transmits data, wherein each display pixel of display module 120 corresponds to first pixel (I) of taking module 210, second pixel (II), 3rd pixel (III) and the 4th pixel (IV), namely the display pixel I of such as display module 120 corresponds to first pixel (I) in taking module 210 region I, second pixel (II), 3rd pixel (III) and the 4th pixel (IV), but not as limit.The single parsing pixel of display module 120 also may correspond to two shooting pixels in taking module 210 or three shooting pixels, below and illustrate that the single parsing pixel of display module 120 corresponds to the embodiment of two, three or four shooting pixels of taking module 210.In another embodiment of the present invention, the region I, II, III and IV of display module 120 can each self-contained multiple pixel, such as display module 120 can be 4x4 display pixel, the then each self-contained 2x2 pixel in region I, II, III and IV, and the taking module 210 of its corresponding shooting is 8x8 shooting pixel, and may be partitioned into four groups of 4x4 shooting pixels, each group 4x4 takes the 2x2 pixel region that pixel may correspond to above-mentioned display module 120.Coding module 110 can transmit for being transmitted multiple cycle by each 2x2 display pixel area the state that the equal modulation of data becomes identical 0 or 1 by each signal period, and the image of the corresponding each display pixel produced transmits data, and the decoder module 220 of taking module 210 can be decoded for the numerical value after the visible light energy intensity level summation addition separately of 4 display pixels of the described 2x2 pixel region of display module 120 received by each group 4x4 shooting pixel, judge that the described cycle receives data as 0 or 1.Because each cycle of described embodiment receives the 2x2 pixel transmission of data by display module, compared to the mode transmitted by means of only single pixel, the error amount that tolerable is larger, and then the success rate improving data transmission.Therefore the present invention can select each cycle to receive data by less pixel transmission, to improve data transfer rate according to user's demand; Or by more pixel transmission, to improve the success rate that data transmit.
In the embodiment of the present invention three, a display pixel of display unit 100 may correspond to two shooting pixels of filming apparatus 200: the second pixel (II) and the 3rd pixel (III), but not as limit, the second pixel (II) and the 3rd pixel (III) are in order to calculate the visible light energy intensity level summation in different unit signal cycle.
Therefore when the display pixel show image of display unit 100 transmits data, during as Fig. 3 (a) or Fig. 3 (b), second pixel (II) of filming apparatus 200 and the 3rd pixel (III) image namely received shown by display unit 100 transmits data and output image receives data, decoder module 220 receives its first sub-pixel (R) of data accumulation to the image that the second pixel (II) receives, second sub-pixel (G) and the 3rd sub-pixel (B) are in the visible light energy intensity level summation in the first unit signal cycle, decoder module 220 receives data accumulation first sub-pixel (R) to the image that the 3rd pixel (III) receives, second sub-pixel (G) and its visible light energy intensity level summation in the second unit signal cycle of the 3rd sub-pixel (B), and compare its visible light energy intensity level summation of the first sub-pixel (R) in the first unit signal cycle and the second unit signal cycle, its visible light energy intensity level summation of second sub-pixel (G) in the first unit signal cycle and the second unit signal cycle, and first its visible light energy intensity level summation of the 3rd sub-pixel (B) in unit signal cycle and the second unit signal cycle.Or, in another embodiment, the overall visible light energy intensity level summation of first, second and the 3rd sub-pixel in the first unit signal cycle and the second unit signal cycle directly can be compared; Or, in another embodiment, the respective visible light energy intensity level summation of the one or both in first, second and third sub-pixel or overall visible light energy intensity level summation only can be compared.
Therefore, if display unit 100 transmits data for the cycle that traffic bit is 0, its image transmits data as shown in Fig. 3 (a), because the first sub-pixel (R) is 25% in the visible light energy intensity level summation in the first unit signal cycle in Fig. 3 (a), the visible light energy intensity level summation in the second unit signal cycle is 0%, second sub-pixel (G) is 50% in the visible light energy intensity level summation in the first unit signal cycle, the visible light energy intensity level summation in the second unit signal cycle is 0%, 3rd sub-pixel (B) is 50% in the visible light energy intensity level summation in the first unit signal cycle, the visible light energy intensity level summation in the second unit signal cycle is 25%, therefore the first sub-pixel (R), the visible light energy intensity level summation that second sub-pixel (G) and the 3rd sub-pixel (B) were accumulated in the first unit signal cycle is different from the visible light energy intensity level summation of accumulating in the second unit signal cycle, therefore decoder module 220 can judge that the visible light energy intensity level summation of received image reception data there is no mean allocation in the first unit signal cycle and the second unit signal cycle according to this, therefore it is 0 that the received cycle receives data bit.
If and display unit 100 transmits data for the cycle that traffic bit is 1, its image transmits data as shown in Fig. 3 (b), because the first sub-pixel (R) is 12.5% in the visible light energy intensity level summation in the first unit signal cycle in Fig. 3 (b), the visible light energy intensity level summation in the second unit signal cycle is 12.5%, second sub-pixel (G) is 25% in the visible light energy intensity level summation in the first unit signal cycle, the visible light energy intensity level summation in the second unit signal cycle is 25%, 3rd sub-pixel (B) is 37.5% in the visible light energy intensity level summation in the first unit signal cycle, the visible light energy intensity level summation in the second unit signal cycle is 37.5%, therefore the first sub-pixel (R), the visible light energy intensity level summation that second sub-pixel (G) and the 3rd sub-pixel (B) were accumulated in the first unit signal cycle is identical with the visible light energy intensity level summation of accumulating in the second unit signal cycle, therefore decoder module 220 can judge that received image receives the visible light energy intensity level summation mean allocation of data in the first unit signal cycle and the second unit signal cycle according to this, therefore it is 1 that the received cycle receives data bit.After receiving reception of multiple cycle data, decoder module 220 receives according to the received described cycle content that data decode goes out aforesaid file data again.
In the embodiment of the present invention four, a display pixel of aforesaid display unit 100 may correspond to three shooting pixels of filming apparatus 200: the first pixel (I), the second pixel (II) and the 3rd pixel (III), but not as limit, wherein, second pixel (II) and the 3rd pixel (III) identical with embodiment three, in order to calculate the visible light energy intensity level summation in different unit signal cycle, the first pixel (I) is then in order to calculate the visible light energy intensity level summation within a signal period.
Therefore when the display pixel show image of display unit 100 transmits data, first pixel (I) of filming apparatus 200, second pixel (II) and the 3rd pixel (III) image namely received shown by display unit 100 transmits data and output image receives data according to this, decoder module 220 receives its first sub-pixel (R) of data accumulation to the image that the first pixel (I) receives, second sub-pixel (G) and the visible light energy intensity level summation of the 3rd sub-pixel (B) within a signal period, decoder module 220 receives data accumulation first sub-pixel (R) to the image that the second pixel (II) receives, second sub-pixel (G) and its visible light energy intensity level summation in the first unit signal cycle of the 3rd sub-pixel (B), decoder module 220 receives data accumulation first sub-pixel (R) to the image that the 3rd pixel (III) receives, second sub-pixel (G) and its visible light energy intensity level summation in the second unit signal cycle of the 3rd sub-pixel (B), and by first sub-pixel (R) of the second pixel (II) in the first unit signal cycle, second sub-pixel (G), and first sub-pixel (R) of the 3rd sub-pixel (B) other visible light energy intensity level summation individual and the first pixel (I), second sub-pixel (G), and the 3rd sub-pixel (B) its compare in other visible light energy intensity level summation in the first unit signal cycle, and by first sub-pixel (R) of the 3rd pixel (III) in the second unit signal cycle, second sub-pixel (G), and first sub-pixel (R) of the 3rd sub-pixel (B) other visible light energy intensity level summation individual and the first pixel (I), second sub-pixel (G), and the 3rd sub-pixel (B) its compare in other visible light energy intensity level summation in the second unit signal cycle.
Because external image data and the image after modulation transmit data, there is within a signal period identical visible light energy intensity level summation, first pixel (I) has precalculated the visible light energy intensity level summation within a signal period again, therefore decoder module 220 is namely by calculating the visible light energy intensity level summation of the first pixel (I) within a signal period, obtain without the visible light energy intensity level summation of mean allocation in the external image data of first module signal period and second unit signal period, as shown in Fig. 3 (a).
Therefore, if in first sub-pixel (R) of first sub-pixel (R) in the first unit signal cycle, the second sub-pixel (G) and the 3rd sub-pixel (B) other visible light energy intensity level summation individual and the first pixel (I), the second sub-pixel (G) and the 3rd sub-pixel (B), it is identical in other visible light energy intensity level summation in the first unit signal cycle to the second pixel (II), 3rd pixel (III) is in first sub-pixel (R) in the second unit signal cycle, second sub-pixel (G), and first sub-pixel (R) of the 3rd sub-pixel (B) other visible light energy intensity level summation individual and the first pixel (I), second sub-pixel (G), and the 3rd sub-pixel (B) its be identical in other visible light energy intensity level summation in the second unit signal cycle, represent visible light energy intensity level summation that image that filming apparatus 200 receives receives data without mean allocation in first module signal period and second unit signal period, to transmit data identical with the image shown in Fig. 3 (a), therefore decoder module 220 can judge that the received cycle receives data bit as 0.
If and the second pixel (II) is in first sub-pixel (R) in the first unit signal cycle, second sub-pixel (G), and first sub-pixel (R) of the 3rd sub-pixel (B) other light energy intensity value summation individual and the first pixel (I), second sub-pixel (G), and the 3rd sub-pixel (B) its be not identical in other visible light energy intensity level summation in the first unit signal cycle, 3rd pixel (III) is in first sub-pixel (R) in the second unit signal cycle, second sub-pixel (G), and first sub-pixel (R) of the 3rd sub-pixel (B) other visible light energy intensity level summation individual and the first pixel (I), second sub-pixel (G), and the 3rd sub-pixel (B) its be not identical in other light energy intensity value summation in the second unit signal cycle, represent the visible light energy intensity level summation mean allocation of the image reception data that filming apparatus 200 receives in first module signal period and second unit signal period, as shown in Fig. 3 (b), therefore decoder module 220 can judge that the received cycle receives data bit as 1 according to this, decoder module 220 receives according to the received described cycle content that data decode goes out aforesaid file data again.Or, in another embodiment, the overall visible light energy intensity level summation of first, second and the 3rd sub-pixel in the first unit signal cycle and the second unit signal cycle directly can be compared; Or, in another embodiment, the respective visible light energy intensity level summation of the one or both in first, second and third sub-pixel or overall visible light energy intensity level summation only can be compared.
In the embodiment of the present invention five, a display pixel of aforesaid display unit 100 may correspond to three shooting pixels of filming apparatus 200, it is the second pixel (II), the 3rd pixel (III) and the 4th pixel (IV), but not as limit, wherein, second pixel (II) and the 3rd pixel (III) identical with embodiment three and embodiment four, in order to calculate the visible light energy intensity level summation in different unit signal cycle, 4th pixel (IV) is then in order to get rid of noise, and the situation reducing error of transmission occurs.Fig. 5 (a) and Fig. 5 (b) below will be coordinated to illustrate the Design Conception of the 4th pixel (IV) further.
Refer to Fig. 5 (a), Fig. 5 (a) is the embodiment three of the visible light energy intensity level summation of aforesaid image transmission data within a signal period (the present embodiment is T), and signal period T can be divided into the first unit signal cycle T 1, second unit signal cycle T 2, the 3rd unit signal cycle T 3 and the 4th unit signal cycle T 4.Image transmits packet containing the first sub-pixel (R), the second sub-pixel (G) and the 3rd sub-pixel (B), its visible light energy intensity level summation without mean allocation in the per unit signal period (the present embodiment is 1/4T).Fig. 5 (b) is the embodiment four of the visible light energy intensity level summation of image transmission data within a signal period (the present embodiment is T), its visible light energy intensity level summation be mean allocation in the unit signal cycle (1/2T) of 2, front and back, namely the visible light energy intensity level summation mean allocation of the first sub-pixel (R), the second sub-pixel (G) and the 3rd sub-pixel (B) is in 1/2 signal period of front and back.
Therefore when the display pixel show image of display unit 100 transmits data, second pixel (II) of filming apparatus 200 and the 3rd pixel (III) image namely received shown by display unit 100 transmits data and output image receives data, decoder module 220 receives data accumulation first sub-pixel (R) to the image that the second pixel (II) receives, its visible light energy intensity level summation in the first unit signal cycle T 1 and the second unit signal cycle T 2 of second sub-pixel (G) and the 3rd sub-pixel (B), data accumulation first sub-pixel (R) is received to the image that the 3rd pixel (III) receives, its visible light energy intensity level summation in the 3rd unit signal cycle T 3 and the 4th unit signal cycle T 4 of second sub-pixel (G) and the 3rd sub-pixel (B), and compare its visible light energy intensity level summation of the first sub-pixel (R) of the first unit signal cycle T 1 and the second unit signal cycle T 2 and the 3rd unit signal cycle T 3 and the 4th unit signal cycle T 4, its visible light energy intensity level summation of the second sub-pixel (G) of first unit signal cycle T 1 and the second unit signal cycle T 2 and the 3rd unit signal cycle T 3 and the 4th unit signal cycle T 4, and first its visible light energy intensity level summation of the 3rd sub-pixel (B) of unit signal cycle T 1 and the second unit signal cycle T 2 and the 3rd unit signal cycle T 3 and the 4th unit signal cycle T 4.
If display unit 100 transmits data for the cycle that traffic bit is 0, and the image transmitted as shown in Fig. 5 (a) transmits data, because the first sub-pixel (R) is 10% in the visible light energy intensity level summation of the first unit signal cycle T 1 and the second unit signal cycle T 2 in Fig. 5 (a), the visible light energy intensity level summation of the 3rd unit signal cycle T 3 and the 4th unit signal cycle T 4 is 0%, second sub-pixel (G) is 50% in the visible light energy intensity level summation of the first unit signal cycle T 1 and the second unit signal cycle T 2, the visible light energy intensity level summation of the 3rd unit signal cycle T 3 and the 4th unit signal cycle T 4 is 50%, 3rd sub-pixel (B) is 50% in the visible light energy intensity level summation of the first unit signal cycle T 1 and the second unit signal cycle T 2, the visible light energy intensity level summation of the 3rd unit signal cycle T 3 and the 4th unit signal cycle T 4 is 40%, therefore the first sub-pixel (R), the visible light energy intensity level summation that second sub-pixel (G) and the 3rd sub-pixel (B) are accumulated in the first unit signal cycle T 1 and the second unit signal cycle T 2 is different with the visible light energy intensity level summation of accumulating in the 3rd unit signal cycle T 3 and the 4th unit signal cycle T 4, therefore decoder module 220 can judge that visible light energy intensity level summation that received image receives data there is no mean allocation in the first unit signal cycle T 1 and the second unit signal cycle T 2 and the 3rd unit signal cycle T 3 and the 4th unit signal cycle T 4 according to this, therefore it is 0 that the received cycle receives data bit.
If and display unit 100 transmits data for the cycle that traffic bit is 1, and the image transmitted as shown in Fig. 5 (b) transmits data, because the first sub-pixel (R) is 5% in the visible light energy intensity level summation of the first unit signal cycle T 1 and the second unit signal cycle T 2 in Fig. 5 (b), the visible light energy intensity level summation of the 3rd unit signal cycle T 3 and the 4th unit signal cycle T 4 is 5%, second sub-pixel (G) is 50% in the visible light energy intensity level summation of the first unit signal cycle T 1 and the second unit signal cycle T 2, the visible light energy intensity level summation of the 3rd unit signal cycle T 3 and the 4th unit signal cycle T 4 is 50%, 3rd sub-pixel (B) is 45% in the visible light energy intensity level summation of the first unit signal cycle T 1 and the second unit signal cycle T 2, the visible light energy intensity level summation of the 3rd unit signal cycle T 3 and the 4th unit signal cycle T 4 is 45%, therefore the first sub-pixel (R), the visible light energy intensity level summation that second sub-pixel (G) and the 3rd sub-pixel (B) are accumulated in the first unit signal cycle T 1 and the second unit signal cycle T 2 is all identical with the visible light energy intensity level summation of accumulating in the 3rd unit signal cycle T 3 and the 4th unit signal cycle T 4, therefore decoder module 220 can judge that visible light energy intensity level mean allocation that received image receives data is in the first unit signal cycle T 1 and the second unit signal cycle T 2 and the 3rd unit signal cycle T 3 and the 4th unit signal cycle T 4 according to this, therefore it is 1 that the received cycle receives data bit element.Decoder module 220 receives according to the received described cycle content that data decode goes out aforesaid file data again.Or, in another embodiment, the overall visible light energy intensity level summation of first, second and the 3rd sub-pixel in the first unit signal cycle and the second unit signal cycle directly can be compared; Or, in another embodiment, the respective visible light energy intensity level summation of the one or both in first, second and third sub-pixel or overall visible light energy intensity level summation only can be compared.
In the process of image transmission, display frame may be caused to rock because of environment or artificial factor, generation that the situation such as external light conversion causes noise, and then the image receiving mistake transmits data and cannot be correctly decoded out the content of file data, therefore in order to the content of file data can be correctly decoded out, the 4th pixel (IV) namely in order to filtered noise to guarantee the correctness of file data.
And at present in order to avoid the method for noise problem to have a lot, wherein because visible light energy intensity level its otherness when 0 ~ 10% and 90 ~ 100% is little, if occur, noise is not easily found, therefore easy generation cannot be correctly decoded the situation of file data content, therefore the present embodiment adopts and judges the mode of visible light energy intensity level summation is to determine whether retransmit when transmission of secondary cycle data carry out filtered noise.
Before execution judges, user can transmit the condition of data re-transmission the sets itself cycle, example: decoder module 220 accumulates the visible light energy intensity level of the 4th pixel (IV) in the first unit signal cycle T 1 and the 3rd unit signal cycle T 3, if visible light energy intensity level of its accumulation be less than 10% or second the visible light energy intensity level accumulated of unit signal cycle T 2 and the 4th unit signal cycle T 4 be greater than 40%, namely T1+T3<10% or T2+T4>40%, display module 120 i.e. re-transmission period transmits data.User also can transmit display module 120 re-transmission period when first sub-pixel (R) of data, the second sub-pixel (G) and the 3rd sub-pixel (B) all meet retransmission condition and transmits data by the image that receives of sets itself the 4th pixel (IV), as long as or the first sub-pixel (R), the second sub-pixel (G) or the 3rd sub-pixel (B) one of them when meeting retransmission condition display module 120 re-transmission period transmit data.
For Fig. 5 (a), as long as if now retransmission condition is the first sub-pixel (R), one of them visible light energy intensity level meeting the first unit signal cycle T 1 and the 3rd unit signal cycle T 3 of the second sub-pixel (G) or the 3rd sub-pixel (B) is less than 10% or the second visible light energy intensity level accumulated of unit signal cycle T 2 and the 4th unit signal cycle T 4 condition that be greater than 40%, display module 120 i.e. re-transmission period transmits data.The visible light energy intensity level summation of accumulating in the second unit signal cycle T 2 because of the second sub-pixel (G) in Fig. 5 (a) is 25%, the visible light energy intensity level summation of accumulating in the 4th unit signal cycle T 4 is 25%, therefore be 50% in the visible light energy intensity level summation that the second unit signal cycle T 2 and the 4th unit signal cycle T 4 are accumulated, meet the visible light energy intensity level accumulated in the second unit signal cycle T 2 and the 4th unit signal cycle T 4 and be greater than 40% condition namely retransmitted, therefore filming apparatus 200 can transmit data according to this result notice display unit 100 re-transmission period, namely display unit 100 transmits next external image data of data-modulated according to the cycle and transmits data to show with the image obtaining upgrading.Because external image data are a continuous print dynamic image, unless run into still frame, otherwise the visible light energy intensity level summation of each external image data is neither same, therefore display unit 100 carries out with different external image data the image transmission data that modulation can obtain different visible light energy intensity value summation, and the image that filming apparatus 200 can obtain upgrading receives data and can decode the content of correct file data according to this.
In the embodiment of the present invention six, a display pixel of aforesaid display unit 100 also may correspond to four shooting pixels of filming apparatus 200, it is the first pixel (I), the second pixel (II), the 3rd pixel (III) and the 4th pixel (IV), wherein, second pixel (II) and the 3rd pixel (III) identical with embodiment three, embodiment four and embodiment five, in order to calculate the visible light energy intensity level summation in different unit signal cycle.First pixel (I) is identical with embodiment four, in order to calculate the light energy intensity value summation within a signal period, and in order to the second pixel (II) and the visible light energy intensity level summation in the 3rd its unit signal cycle of pixel (III) comparison, to judge receiving the visible light energy intensity level summation of data by image, whether mean allocation is in multiple unit signal cycle.4th pixel (IV) is then identical with embodiment five, and in order to get rid of noise, the situation reducing error of transmission occurs, embodiment six and can embodiment three, embodiment four or, the pattern of embodiment five or its combination carries out the transmission of file data.
Wherein, embodiment six first pixel (I) can also accelerate the computational efficiency of the 4th pixel (IV), to promote the efficiency getting rid of noise.When first pixel (I) of filming apparatus 200 image received shown by display unit 100 transmits data and output image receives data, the image that decoder module 220 first receives the first pixel (I) receives its visible light energy intensity level summation in one-period signal of data accumulation, wherein, signal period can be divided into the first unit signal cycle T 1, second unit signal cycle T 2, the 3rd unit signal cycle T 3 and the 4th unit signal cycle T 4, as shown in Fig. 5 (a).
If the image that the first pixel (I) receives receives first sub-pixel (R) of data, second sub-pixel (G) and the 3rd sub-pixel (B) are all less than 50% in indivedual visible light energy intensity level summations of one-period signal, as first sub-pixel (R) of Fig. 5 (a), its visible light energy intensity level summation is 10%, in this embodiment, if the visible light energy intensity level summation receiving data because of received image needs mean allocation in multiple unit period signal, in the present embodiment only can mean allocation in the first unit signal cycle T 1 and the 3rd unit signal cycle T 3, as first sub-pixel (R) of Fig. 5 (b), first unit signal cycle T 1 and the 3rd unit signal cycle T 3 respectively have the visible light energy intensity level summation of 5%, then to calculate the first unit signal cycle T 1, the 4th pixel (IV) only need add that the mode of the light energy intensity value summation of the 3rd unit signal cycle T 3 judges whether to need re-transmission period to transmit data.
If the image that the first pixel (I) receives receives first sub-pixel (R) of data, second sub-pixel (G) and the 3rd sub-pixel (B) are greater than 50% in indivedual visible light energy intensity level summations of one-period signal, as the 3rd sub-pixel (B) of Fig. 5 (a), if the visible light energy intensity level summation receiving data because of its image needs mean allocation in multiple unit period signal, except the first unit signal cycle T 1 and the 3rd unit signal cycle T 3, visible light energy intensity level summation also can be dispensed to the second unit signal cycle T 2 and the 4th unit signal cycle T 4, as the 3rd sub-pixel (B) of Fig. 5 (b), then to calculate the first unit signal cycle T 2, the 4th pixel (IV) only need add that the mode of the light energy intensity value summation of the 3rd unit signal cycle T 4 can judge whether to need re-transmission period to transmit data, therefore the computational speed of the 4th pixel (IV) can effectively be increased, promote the efficiency getting rid of noise.
The embodiment five that Fig. 6 (a) and Fig. 6 (b) is image transmission data and embodiment six, its first sub-pixel (R), the second sub-pixel (G) and the 3rd sub-pixel (B), can in different time point T within the same signal period for not overlapping each other
a, T
b, T
cstart to accumulate its visible light energy intensity level, when taking module 210 image taken as Fig. 6 (a) transmits data, decoder module 220 i.e. indivedual the first sub-pixel (R) to the first unit signal cycle (figure left side 1/2T) and the second unit signal cycle (figure right side 1/2T), second sub-pixel (G) and the 3rd sub-pixel (B) accumulate its visible light energy intensity level summation, its first sub-pixel (R) is 25% in the visible light energy intensity level summation in the first unit signal cycle, and be 0% in the visible light energy intensity level summation in the second unit signal cycle, 3rd sub-pixel (B) is 0% in the visible light energy intensity level summation in the first unit signal cycle, and be 25% in the visible light energy intensity level summation in the second unit signal cycle, although the second sub-pixel (G) is all 12.5% in the visible light energy intensity level summation in the first unit signal cycle and the second unit signal cycle, but the visible light energy intensity level summation of the first sub-pixel (R) and the 3rd sub-pixel there is no mean allocation in the first unit signal cycle and the second unit signal cycle, therefore still judge put in place as 0 cycle receive data.
And in Fig. 6 (b), its first sub-pixel (R), the second sub-pixel (G) and the 3rd sub-pixel (B) mean allocation in the first unit signal cycle (figure left side 1/2T) and the second unit signal cycle (figure right side 1/2T), and the first sub-pixel (R), the second sub-pixel (G) and the 3rd sub-pixel (B) in the first unit signal cycle respectively with T
a1, T
b1, T
c1time point, in the second unit signal cycle respectively with T
a2, T
b2, T
c2time point accumulate its visible light energy intensity level in the mode do not overlapped each other, but other visible light energy intensity level summation individual is all still 12.5%, therefore the visible light energy intensity level summation of the first sub-pixel (R), the second sub-pixel (G) and the 3rd sub-pixel (B) was all on average scattered in the first unit signal cycle and the second unit signal cycle, so decoder module 220 can judge that obtained the cycle receives data as position is 1 according to this.
Combine the above, embodiments of the invention can reach following advantages and effect at least one of them.Because file data defeated for tendency to develop to be converted to after multiple cycle transmits data by embodiments of the invention, transmit external image data described in data-modulated according to the described cycle again and transmit data to produce multiple image, and the image received reception data only need be accumulated its visible light energy intensity level summation according to the unit signal cycle by filming apparatus 200, the file data for receiving can be gone out by Xie Code according to this, and the visible light energy intensity level summation of external image data described in each within the signal period and the image produced after corresponding described external image data-modulated to transmit the visible light energy intensity level summation of data within the signal period identical, therefore display module 120 need be play the described image after modulation and transmits data, do not need the extra power increasing transmission file data, the object of transmission file data can be reached, and the image after modulation transmits data because still keeping the visible light energy intensity level summation identical with before modulation within the signal period, therefore can when not affecting the transmission carrying out file data user watches the visual experience of film.Embodiments of the invention can select each cycle to receive data by less pixel transmission, to improve data transfer rate according to user's demand again; Or by more pixel transmission, to improve the success rate that data transmit.
The above, be only preferred embodiment of the present invention, can not limit scope of the invention process with this, and all equivalences done according to the claims in the present invention and description change or modify, and all still belong to the scope that patent of the present invention contains.Any embodiment of the present invention or claim must not reach whole object disclosed by the present invention or advantage or feature in addition.In addition, summary and denomination of invention are only used to the use of auxiliary patent document retrieval, are not used for limiting interest field of the present invention.In addition, the term such as " first ", " second " of mentioning in this specification or claim only in order to name the title of element (element) or to distinguish different embodiment or scope, and is not used for the quantitative upper limit of limiting element or lower limit.
Claims (25)
1. a display unit for wireless transmitting system, for passing through transmission of visible light file data, comprising:
Coding module, in order to receive described file data and multiple external image data, and described file data is converted in order to transmission of multiple cycle data, transmit external image data described in data-modulated according to the described cycle and produce multiple image transmission data according to described order; And
Display module, is connected with described coding module, transmits data in order to receive described image and shows described image transmission data;
Wherein to transmit the visible light energy intensity level summation of data within the described signal period identical for the visible light energy intensity level summation of external image data described in each within a signal period and the described image produced after corresponding described external image data-modulated, and the described signal period can be divided into multiple unit signal cycle.
2. the display unit of wireless transmitting system as claimed in claim 1, a wherein said coding module corresponding described cycle transmits data and adjusts the corresponding visible light energy intensity level summation of described external image data within the described unit signal cycle, and produces a described image and transmit data.
3. the display unit of wireless transmitting system as claimed in claim 2, wherein the cycle described in each transmits the data volume of data is one, institute's rheme is in order to represent the state of 0 or 1, signal period described in each can be divided into the first unit signal cycle and the second unit signal cycle, transmitting data when the described cycle is the state of 0, it is different from the light energy summation in described second unit signal cycle that described image transmits the light energy intensity value summation of data within the described first unit signal cycle, transmitting data when the described cycle is the state of 1, it is identical with the light energy intensity value summation in described second unit signal cycle that described image transmits the light energy intensity value summation of data within the described first unit signal cycle.
4. the display unit of wireless transmitting system as claimed in claim 1, wherein said display module has multiple display pixel, and image described in each transmits data and is used for showing via at least one display pixel of described display module.
5. the display unit of wireless transmitting system as claimed in claim 1, wherein external image data described in each comprise the light energy intensity value sum data of at least one display pixel.
6. the display unit of wireless transmitting system as claimed in claim 5, wherein said display pixel also can comprise multiple sub-pixel, and external image data described in each comprise the light energy intensity value sum data of at least one sub-pixel.
7. the display unit of wireless transmitting system as claimed in claim 1, wherein said display module is used for showing multiple described image simultaneously and transmits data.
8. the display unit of wireless transmitting system as claimed in claim 1, the visible light energy intensity level summation wherein within the described signal period can represent by grey decision-making.
9. the display unit of wireless transmitting system as claimed in claim 1, wherein said coding module is used for receiving described external image data from outside source.
10. the display unit of wireless transmitting system as claimed in claim 1, wherein said coding module has time schedule controller, in order to control described coding module according to described sequential operation.
The filming apparatus of the wireless transmitting system of 11. 1 kinds of cooperation display unit according to claim 1, for passing through visible ray receiving archives data, comprising:
Taking module, transmits data in order to the described image taken shown by described display unit and produces multiple image reception data; And
Decoder module, is connected with described taking module, receives data in order to receive described image, and becomes multiple cycle to receive data described image reception data transaction according to described order, and produces described file data according to described cycle reception data.
The filming apparatus of 12. wireless transmitting systems as claimed in claim 11, wherein said decoder module to be accumulated described in each image and is received the visible light energy summation of data within the correspondence described unit signal cycle, and receives data in order to convert the cycle described in corresponding each respectively to.
The filming apparatus of 13. wireless transmitting systems as claimed in claim 12, wherein the cycle described in each receives the data volume of data is one, institute's rheme is in order to represent the state of 0 or 1, signal period described in each can be divided into the first unit signal cycle and the second unit signal cycle, when the light energy summation of described image reception data within the described first unit signal cycle is different from the light energy summation in described second unit signal cycle, then the described cycle receives data is the state of 0, when the light energy summation of described image reception data within the described first unit signal cycle is identical with the light energy summation in described second unit signal cycle, then the described cycle receives data is the state of 1.
The filming apparatus of 14. wireless transmitting systems as claimed in claim 11, wherein said taking module has multiple shooting pixel.
The filming apparatus of 15. wireless transmitting systems as claimed in claim 11, wherein said taking module is used for receiving multiple image simultaneously and transmits data.
The filming apparatus of 16. wireless transmitting systems as claimed in claim 11, wherein said decoder module has time schedule controller, in order to control described decoder module according to described sequential operation.
The display routine of 17. 1 kinds of wireless transmitting systems, perform for loading described program via computer and rely on display module by transmission of visible light file data, it comprises follow procedure instruction:
Program command (a), converts transmission of multiple cycle data in order to by described file data; And
Program command (b), transmit data-modulated multiple external image data according to described cycle to produce multiple image according to described order and transmit data, and maintaining the visible light energy intensity level summation of external image data described in each within a signal period and the corresponding described image produced, to transmit the visible light energy intensity level summation of data within the described signal period identical.
The display routine of 18. wireless transmitting systems as claimed in claim 17, wherein program command (b) also comprises:
Program command (b1), the described signal period is divided into multiple unit signal cycle according to sequential, and corresponding described cycle transmit data and adjust the corresponding visible light energy intensity level summation of described external image data within the unit signal cycle described in each, and correspondingly produce a described image and transmit data.
The display routine of 19. wireless transmitting systems as claimed in claim 18, wherein program command (b1) also comprises:
Program command (b11), the data volume that the cycle described in each that adjusts transmits data is one, and the signal period described in each in order to represent the state of 0 or 1, and is divided into the first unit signal cycle and the second unit signal cycle by institute's rheme; And
Program command (b12), it is the state of 0 that the corresponding described cycle transmits data, described image is made to transmit the light energy intensity value summation of data within the described first unit signal cycle different from the light energy intensity value summation in described second unit signal cycle, transmitting data when the described cycle is the state of 1, makes described image transmit the light energy intensity value summation of data within the described first unit signal cycle identical with the light energy intensity value summation in described second unit signal cycle.
The display routine of 20. wireless transmitting systems as claimed in claim 17, wherein said display routine receives described file data for making the computer performing described program from outside source.
The display routine of 21. wireless transmitting systems as claimed in claim 17, wherein said display routine transmits data to described display module for making the computer performing described program transmit described image, and relies on described display module to show described image transmission data.
The photographing program of the wireless transmitting system of 22. 1 kinds of cooperation display routines according to claim 17, perform for loading described program via computer and rely on taking module by visible ray receiving archives data, it comprises follow procedure instruction:
Program command (c), receives data transaction according to described order by image and becomes multiple cycle to receive data; And
Program command (d), receives data according to the described cycle and produces described file data.
The photographing program of 23. wireless transmitting systems as claimed in claim 22, wherein program command (c) also comprises:
Program command (c1), is divided into multiple unit signal cycle by the described signal period, and calculate described image receive data in correspondence each described in visible light energy summation in the unit signal cycle, receive data to convert a described cycle to.
The photographing program of 24. wireless transmitting systems as claimed in claim 22, wherein program command (c1) also comprises:
Program command (c11), the data volume that the cycle described in each that adjusts receives data is one, and the signal period described in each in order to represent the state of 0 or 1, and is divided into the first unit signal cycle and the second unit signal cycle by institute's rheme; And
Program command (c12), when the light energy summation of described image reception data within the described first unit signal cycle is different from the light energy summation in described second unit signal cycle, making the described cycle receive data is the state of 0, when the light energy summation of described image reception data within the described first unit signal cycle is identical with the light energy summation in described second unit signal cycle, making the described cycle receive data is the state of 1.
The photographing program of 25. wireless transmitting systems as claimed in claim 22, wherein said photographing program is for make the computer performing described program use described camera module to take described file data that described display module transmits and produce multiple image and receive data.
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| JP2000078391A (en) * | 1998-08-28 | 2000-03-14 | Fuji Photo Film Co Ltd | Printing method and device and recording medium thereof |
| CN1860781A (en) * | 2003-09-29 | 2006-11-08 | 皇家飞利浦电子股份有限公司 | System and method for transmitting data in a video signal by modulating a video signal brightness level |
| CN101047771A (en) * | 2006-03-31 | 2007-10-03 | 胡鹏飞 | Method for transmitting data form computer to hand mobile equipment with photo taking function |
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