CN101031043A - Video output apparatus, control method thereof, and video device - Google Patents
Video output apparatus, control method thereof, and video device Download PDFInfo
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Abstract
A video output apparatus including: a video output unit which outputs a video signal while switching the format of the video signal between a first format and a second format for expressing color differently; a mute signal generation unit which generates, as a muting video signal, a specialized video signal expressing a color in which the difference between the color displayed when the specialized video signal is interpreted in its own format and the color displayed when the specialized video signal is interpreted in a different format is a minimum; a selection unit which selects one of the video signal outputted by said video output unit and the mute signal generated by said mute signal generation unit, and outputs the selected signal; and a control unit which causes the selection unit to select the mute signal in a period including the switch performed by the video output unit.
Description
Technical field
The present invention relates to send the image output device of signal of video signal, particularly the image output device of the color format of changeable signal of video signal to receiving systems such as television receivers.
Background technology
In recent years, along with popularizing and the beginning of digital television broadcasting of DVD, popularizing the equipment of handling digital image signal.
As connecting transmitting apparatus (DVD player etc.) that sends signal of video signal and the interface format that receives the receiving equipment (television set etc.) of signal of video signal, HDMI (High DefinitionMultimedia Interface, HDMI (High Definition Multimedia Interface)) is arranged.HDMI is the interface format that is used for transmitting to receiving system the digital image signal of base band, keeps interchangeability with widely used DVI in the personal computer (digital visual interface, digital visual interface), and imagination the lift-launch on civil equipment.A HDMI cable that connects transmitting apparatus and receiving equipment, the image data and the voice data of transmission base band.The color format of its transmissible signal of video signal is not only supported the rgb signal that uses among the PC (personal computer), also supports the brightness that utilizes in television receiver usually and color difference signal (below be labeled as the YCbCr signal).
Fig. 1 is the block diagram of schematic configuration that expression is connected with the system of HDMI.This system has transmitting apparatus 10 and receiving equipment 20.Transmitting apparatus 10 is being connected with receiving equipment 20 usefulness HDMI cables.HDMI sending part 700 in the transmitting apparatus 10 sends image data and voice data through the HDMI cable to receiving equipment 20.Overlapping on this signal of video signal have an identification packets of information.The identifying information bag represents that image data is rgb signal or YCbCr signal.
Fig. 2 is illustrated in the figure that identification signal overlapping on the signal of video signal wraps in the position in the signal of video signal.Among this figure illustration resolution be the situation of progressive (PROGRESSIVE) image of 720 pixels * 480 pixels.As shown in the drawing, in each frame, overlapping in the interval VBI of the vertical flyback of signal of video signal (Vertical Blanking Interval, VBI: Vertical Blanking Interval) have 1 identifying information bag.
Transmitting apparatus 10 is according to user's straighforward operation etc., can the color format of the signal of video signal in sending be switched to the color format of hope according to the ability of receiving equipment 20 or according to user's hobby.
Fig. 3 is the block diagram of structure of HDMI sending part 700 of the color format of the changeable signal of video signal of expression.As shown in the drawing, HDMI sending part 700 comprises video input part 701, color transformation portion 702, identifying information bag distribution department 703, video efferent 704, carries out the switching of color format by the CPU710 in the transmitting apparatus 10.
The image data of video input part 710 input YCbCr signals or rgb signal.
Color transformation portion 702 has been instructed to from CPU710 under the situation of conversion, will be rgb signal from the YCbCr signal transformation of video input part 701 inputs, perhaps rgb signal is transformed to the YCbCr signal.Do not indicate from CPU710 under the situation of conversion, constant bringing from the signal of video signal of video input part 701 just exported to video efferent 704.
It is the rgb signal or the identifying information bag of YCbCr signal that identifying information bag distribution department 703 generates the expression signal of video signal.Receiving equipment 20 is used for the look conversion that image shows according to the identifying information bag.
Fig. 4 is the figure of the control timing of the color format switching in the expression HDMI sending part 700.Among this figure, show the control timing when YCbCr switches to rgb signal.The transverse axis express time.In addition, the signal of 4 signal indication transmitting apparatus 10 that are arranged in order from the top, the signal of 2 signal indication receiving equipments 20 arranging from the below.Promptly, represent successively from the top: from the instruction of CPU710 to 700 outputs of HDMI sending part, input image data to 702 inputs of color transformation portion, image data from 702 outputs of color transformation portion, identifying information bag from 703 distribution of identifying information bag distribution department, by the reception image data of receiving equipment 20 receptions, and receive identifying information.
When CPU710 detects the straighforward operation of switchable color form, 702 output indications are the switching command (T1) of rgb signal with YCbCr signal transformation to color transformation portion, then, will represent that to the 703 output indications of identifying information bag distribution department the identifying information bag of YCbCr signal switches to the switching command (T2) of the identifying information bag of expression rgb signal.The time difference of 2 switching commands is equivalent to the number frame.The reasons are as follows of 2 switching command generation time differences.That is, CPU710 not only carries out the operation of HDMI sending part 700, also carries out the operation of transmitting apparatus 10 integral body, so according to the size of the required processing load of the control of transmitting apparatus 10 integral body, it is big that the interval of switching command becomes.In addition, owing to compare with PC etc., disposal ability is low.
Because time difference of 2 switching commands, also generation time is poor from the switching timing of the image data of color transformation portion 702 outputs with from the switching timing of the identifying information bag of identifying information bag distribution department 703 distribution.Its result, the time difference also produces switching timing that receives image data and poor (during the Ta among the figure) that receives the switching timing of identifying information bag by the HDMI cable in receiving equipment 20.
In receiving equipment 20, the color format that receives view data and receive the represented color format of identifying information bag different during Ta, misread and be interpreted as the represented color format of reception identifying information bag and show receiving image data.Its result, during Ta look takes place becomes.
In addition, following technology is disclosed in TOHKEMY 2000-333088 communique, promptly between progressive (PROGRESSIVE) and staggered (INTERLACE) of broadcast program, for the hidden image noise that when image format changes, produces, before the image format change after change during carry out the image noise elimination.
But according to above-mentioned prior art, there are the following problems: though can the hidden image noise that when the change of the different image format of scan method, produces, the look that can not hiddenly produce when the switching of the different image format of color format becomes.In the example of Fig. 4, when the switching of color format, image show to produce look and becomes in the number frame, though be in a flash to the user, existence can produce that look becomes the discomfort that causes and to the problem of the uneasiness sense of the fault of transmitting apparatus or receiving equipment.
Fig. 5 represents the color data contrast table about the rgb signal of black and white and YCbCr signal.Among this figure, show the rgb signal of 24 bits and 24 bits the YCbCr signal black and white become score value.The black of rgb signal with (R, G, B)=(0,0,0), white is with (255,255,255) expression.In addition, the black of YCbCr signal with (Y, Cb, Cr)=(16,128,128), white with (235,128,128) expression.For example, if the black misunderstanding of rgb signal is interpreted as the YCbCr signal, perhaps the black misunderstanding with the YCbCr signal is interpreted as rgb signal, can show the image of different colours, different brightness.So, if between the existing different color format of color table, carry out the explanation of look mistakenly, can in image, produce look and become.
Fig. 6 shows the table that expression produces the combination of look change.In the figure, the color format before each line display switches, the color format after the switching is shown in each tabulation.The pixel count of YCbCr signal (4: 4: 4) expression brightness signal Y: the pixel count of color difference signal Cb: the ratio of the pixel count of color difference signal Cr is 4: 4: 4.Similarly, expression in 4: 2: 2 this than being 4: 2: 2.8 bits of rgb signal represent that each composition of RGB is 8 bits.In the same manner, 12 bits represent that each composition of RGB is 12 bits.As shown in the drawing, the color format conversion between the different rgb signal of the bit number of each composition and pixel count do not produce look and become than in the color format conversion between different YCbCr signals.To this, can produce the problem that look becomes in the time of can having the switching of the color format between rgb signal and YCbCr signal.
In addition, in Fig. 4,, think that then not producing look becomes if the time difference between the instruction of the switching of instruction that hypothesis is switched from the indication color form of CPU and indication identifying information bag is 0.But, be 0 even establish the above-mentioned time difference, under the low situation of the disposal ability of receiving equipment side or under the synchronous situation of receiving equipment change that the look of the explanation of identifying information bag and signal of video signal is explained, still there is the problem that look becomes that produces.
Summary of the invention
In view of above-mentioned problem and the objective of the invention is to of making, a kind of transmitting apparatus of signal of video signal is provided, when the signal of video signal between the existing different color format of color table switches, reduce look and become, make the imperceptible discomfort of user and to the uneasiness sense of fault.
To achieve these goals, image output device of the present invention comprises: the image output unit, switch form, exportable signal of video signal between first and second existing different form of color table; The purified signal generation unit produces specific image signal as noise elimination with signal of video signal, and this specific image signal is the specific image signal of the difference minimum of the demonstration look of demonstration look with different form explanation time the when explaining with the form of this specific image signal; Selected cell is selected the signal of video signal of self imaging output unit and from one in the purified signal of purified signal generation unit, is exported selected signal; And control unit, during the switching that clips the image output unit, make selected cell select above-mentioned purified signal.According to this structure, in the output of the specific image signal that noise elimination is used, changed in the receiving equipment side under the situation of explanation of color format, the color of the difference minimum of demonstration look when output has been explained specific image signal with this form and the demonstration look when explaining with different-format can reduce the look change.Thus, have and do not make the user feel discomfort and the effect of the uneasiness sense of fault.
In addition, in the output of the specific image signal that above-mentioned noise elimination is used, changed in the receiving equipment side under the situation of explanation of color format, even the color of the sight equation minimum between demonstration look when output has been explained specific image signal with this form and the demonstration look when explaining with different-format also has effect same.
At this, also can be, above-mentioned purified signal generation unit, above-mentioned image output unit with signal of video signal when first form switches to second form, clip this switching during produce above-mentioned specific image signal with first form; Above-mentioned image output unit with signal of video signal when second form switches to first form, clip this switching during produce above-mentioned specific image signal with second form; The above-mentioned specific image signal of first form and the above-mentioned specific image signal of second form are represented in fact with of the same colour.According to this structure, when first form switches to second form and when second form switches to first form, begin noise elimination with image with the noise elimination of same color, so, the effect that does not make the user produce sticky feeling is arranged.
At this, also can be that above-mentioned image output unit switches to second form with signal of video signal from first form; Above-mentioned specific image signal generates with first form; Above-mentioned first form is the rgb signal performance of 24 bits of composition in order to the of all kinds of RGB; The color of the difference minimum of the demonstration look the when specific image signal of exporting above-mentioned first form is interpreted as first form, the demonstration look during with second form of 24 bits that to be interpreted as with brightness value and 2 values of chromatism be composition.
At this, also can be that above-mentioned image output unit switches to first form with signal of video signal from second form; Above-mentioned specific image signal generates with second form; Above-mentioned second form is in order to brightness value and 2 Y, Cb, Cr performances that value of chromatism is 24 bits of composition; Demonstration look when the specific image signal of exporting above-mentioned second form is interpreted as second form, the demonstration look (R, G, B) when to be interpreted as with RGB of all kinds be first form of R, G, B performance of 24 bits of composition and with Y, Cb, the color of difference minimum of demonstration look when Cr shows.
At this, also can be that above-mentioned reflection output device also comprises: generation unit generates the some identifying informations in expression first form and second form; Output unit at overlapping identifying information from the signal of video signal of selected cell output, is exported superimposed image signal to the outside; And control unit, control above-mentioned generation unit, so that in during above-mentioned,, generate and switch corresponding identifying information in the different timing of timing of switching with the form of image output unit.
In addition, also can be under the situation of not exporting above-mentioned identifying information bag, to consider signal of video signal is identified as the feature of the receiver side of RGB, above-mentioned image output device comprises: generation unit generates the some identifying informations in expression first form and second form; Output unit at overlapping identifying information from the signal of video signal of selected cell output, is exported superimposed image signal to the outside; And selected cell, the output of changeable above-mentioned identifying information bag/do not export; Above-mentioned selected cell during above-mentioned in, in the different timing of timing of switching with the form of image output unit, do not control export/not exporting corresponding to the identifying information of switching.
According to this structure, temporarily stop the output of identifying information bag in the scope during noise elimination.In the receiving equipment, in the transmission stopping period of identifying information bag, signal of video signal is handled as the form of acquiescence (generally being rgb signal).Thus, carry out the switching that the form of signal of video signal is explained, can further reduce the variation of noise elimination image in the moment more early.
In addition, also can be, in drive access, not export under the situation of clock and image data etc., consider that receiver side applies the feature of noise elimination with black etc. on picture, above-mentioned image output device comprises: generation unit generates the some identifying informations in expression first form and second form; Output unit at overlapping identifying information from the signal of video signal of selected cell output, is exported superimposed image signal to the outside; And selected cell, the output of the changeable above-mentioned signal of superimposed image/do not export; Above-mentioned selected cell during above-mentioned in, in the different timing of timing of switching with the form of image output unit, control is corresponding to the output of the own superimposed image signal that switches/do not export.
According to this structure, in the scope during noise elimination, temporarily stop the output of specific image signal.Receiving equipment is presented at the inner image that generates of receiving equipment at the transmission stopping period of signal of video signal.Though this image-dependent in receiving equipment and difference, generally is the formed display image of signal of video signal before picture black, blue images (so-called blue screen), the noise elimination etc.Thus, carry out the switching of the display image in the receiving equipment, utilize receiving equipment can eliminate the variation of noise elimination image in the moment more early.Perhaps, identical with second execution mode, carry out the switching that the form of signal of video signal is explained in the moment more early, can further reduce the variation of noise elimination image.
According to the present invention, in the output of the specific image signal that noise elimination is used, changed in the receiving equipment side under the situation of explanation of color format, the look that can reduce in the demonstration of specific image signal becomes.Thus, have and do not make the user feel sticky feeling and the effect of the uneasiness sense of fault.
The Japanese patent application No.2006-055541 that on March 1st, 2006 submitted to incorporates this paper into as a reference, and the Japanese patent application No.2006-322446 that on November 29th, 2006 submitted to incorporates this paper into as a reference.
Description of drawings
Above-mentioned and other purpose of the present invention, advantage and feature will be conspicuous by the explanation of following the preferred embodiments of the present invention of describing with reference to the accompanying drawings.
Fig. 1 is the skeleton diagram of the system of the HDMI of carrying out communication of the prior art.
Fig. 2 is the figure of the lap position of expression identifying information bag of the prior art.
Fig. 3 is the block diagram of the structure of expression HDMI sending part of the prior art.
Fig. 4 is the figure of expression control timing of the prior art.
Fig. 5 is the figure of the color data contrast table of expression RGB and YCbCr.
Fig. 6 shows the figure of the table of the combination of representing that the generation look becomes.
Fig. 7 is the synoptic diagram of the system that carries out HDMI communication in first execution mode of the present invention.
Fig. 8 is the block diagram of the structure of expression HDMI sending part.
Fig. 9 is the figure that is similar to " deceiving " data shared among expression RGB and the YCbCr.
Figure 10 is the figure that is similar to " deceiving " data shared among expression RGB and the YCbCr.
Figure 11 is the block diagram of the structure of expression purified signal generating unit.
Figure 12 is the block diagram of the structure of expression control part.
Figure 13 is the figure of the control timing of expression color format switching.
The scope example that black when Figure 14 represents with RGB, YCbCr explanation is set.
Figure 15 is the synoptic diagram of the system that carries out HDMI communication in second execution mode of the present invention.
Figure 16 is the figure of the control timing of expression color format switching.
Figure 17 is the synoptic diagram of the system that carries out HDMI communication in the 3rd execution mode of the present invention.
Figure 18 is the figure of the control timing of expression color format switching.
Figure 19 is the skeleton diagram when having carried system of the present invention in equipment.
Embodiment
(first execution mode)
Below, the image output device of embodiments of the present invention is described.The image output device of present embodiment can switch signal of video signal between existing different first form of color table and second form form is exported above-mentioned signal of video signal, clip this switching during export purified signal.This purified signal is a specific image signal, and the color of the difference minimum of the demonstration look of the demonstration look in the time of will being explained by the form of this specific image signal when being explained by different forms is as specific image signal.Thereby, realized the reduction that look becomes.
Fig. 7 is the synoptic diagram of the system that carries out HDMI communication in the embodiments of the present invention.
This system has transmitting apparatus 1 and receiving equipment 2.Transmitting apparatus 1 for example is image output devices such as the STB (set-top box), digital broadcasting tuner card of DVD player, DVD register, receiving digital broadcast.Receiving equipment 2 for example is television receivers such as plasma TV and liquid crystal TV set, video projector etc.Transmitting apparatus 1 is being connected with receiving equipment 2 usefulness HDMI cables.Transmitting apparatus 1 has HDMI sending part 100 and CPU110.
HDMI sending part 100 sends image data and voice data through the HDMI cable to receiving equipment 2.Overlapping identifying information bag on this signal of video signal.The identifying information bag represents that signal of video signal is rgb signal or YCbCr signal.Identifying information wraps in position overlapped in the signal of video signal, and is identical with Fig. 2.HDMI sending part 100 switches the form of signal of video signal and exports above-mentioned signal of video signal between the existing first different form of color table and second form, clip this switching during the above-mentioned purified signal of output.
CPU110 carries out the control of HDMI sending part 100 and the control of transmitting apparatus 1 integral body.The control of transmitting apparatus 1 integral body comprises: the control of the mpeg decoder when DVD reproduces, the control of the mpeg encoder during the DVD video recording, the control of user interface etc.
The color format of receiving equipment 2 image data that differentiation receives according to the identifying information bag is explained image data with the color format that determines, and is shown.
Fig. 8 is the block diagram of the structure of expression HDMI sending part 100.As shown in the drawing, HDMI sending part 100 has video input part 101, color transformation portion 102, identifying information bag distribution department 103, video efferent 104, purified signal generating unit 105, switch portion 106, control register portion 107, carries out the switching of color format according to the indication of CPU110.Below, as the concrete example of the existing different color format of color table, be that example describes with first color format to the, three color formats.If first color format is (R, G, B) Biao Shi rgb signal with red bluish-green usefulness 24 bits as composition of all kinds.If second color format be with brightness value and 2 values of chromatism as usefulness 24 bits of composition (Y, Cb, Cr) Biao Shi YCbCr signal, (pixel count of brightness signal Y: the pixel count of color difference signal Cb: the ratio pixel count of color difference signal Cr) is (4: 4: 4).If the 3rd color format be with brightness value and 2 values of chromatism usefulness 24 bits that are composition (Y, Cb, Cr) Biao Shi YCbCr signal, (pixel count of brightness signal Y: the pixel count of color difference signal Cb: the ratio pixel count of color difference signal Cr) is (4: 2: 2).The color table of second and third color format is existing identical, so, when being labeled as the YCbCr signal merely below, refer in second and third color format.
The image data of video input part 102 input YCbCr signals or rgb signal.
So, video input part 101 and color transformation portion 102 have the function that the form that can switch signal of video signal between first and second existing different form of color table is exported the image output unit of above-mentioned signal of video signal.
It is the rgb signal or the identifying information bag of YCbCr signal that identifying information bag distribution department 103 generates the expression signal of video signal.More exactly, the identifying information bag comprises the information that is used to discern first to the 3rd color format.Receiving equipment 20 is used for the look explanation that image shows according to the identifying information bag, carries out image and shows.
Purified signal generating unit 105 produces specific image signal as the noise elimination signal of video signal.Produce these three specific image signal of the specific image signal of specific image signal (not only following be called RGB purified signal), second color format of first color format, the specific image signal of the 3rd color format (with 2 of the back but also be called the YCbCr purified signal).The difference of the demonstration look of the demonstration look when each specific image signal will be explained by the form of this specific image signal (below be called before the conversion demonstration look) when being explained by different forms (below be called after the conversion demonstration look) produces with signal of video signal as noise elimination for the specific image signal of minimum color.
The concrete example of specific image signal is described.The one-tenth score value of the specific image signal of first color format wish in fact be (R, G, B)=(16,16,16).In addition, the one-tenth score value of the specific image signal of second and third color format wish in fact be (Y, Cb, Cr)=(16,128,128).
Illustrate and wish that these values are as the reason of noise elimination with signal of video signal.
Illustrate about the key diagram of noise elimination at Fig. 9 with the color of signal of video signal.As shown in the drawing, (R, G, demonstration look B)=(16,16,16) they are the specific image signal of first color format (RGB purified signals), expression is near black color.As shown in Figure 5, the very black of rgb signal is (0,0,0), even but (16,16,16), under situation about being displayed on as noise elimination usefulness in the integral image, the user also merely is identified as black completely.
At first, consider (R, G, B)=the demonstration look of (16,16,16) is interpreted as the situation of YCbCr signal by misunderstanding.(Y, Cb, demonstration look Cr)=(16,16,16) are equivalent to and (R, G, the identical color of demonstration look (dirty-green) B)=(0,135,0).This situation is the situation of the difference minimum of demonstration look before the above-mentioned conversion and the demonstration look after the conversion.In other words, the demonstration look in the time of will explaining with the form of purified signal by RGB be made as (r1, g1 is in the time of b1)=(16,16,16), demonstration look when explaining by different forms (Y, Cb, Cr)=(16,16,16), be demonstration look (r2, g2, color b2)=(0,135,0) when representing with RGB.
Then, consider (Y, Cb, Cr)=the demonstration look of (16,128,16) is interpreted as the situation of rgb signal by misunderstanding.(R, G, demonstration look B)=(16,128,16) are equivalent to and (Y, Cb, the identical color of demonstration look (dense purple) Cr)=(95,147,72).This situation also is the situation of the difference minimum of demonstration look before the above-mentioned conversion and the demonstration look after the conversion.In other words, the demonstration look in the time of will explaining with the form of purified signal by YCbCr be made as (r1, g1, b1)=(16,128,16) time, and the demonstration look when explaining by different forms (R, G, B)=(16,128,128) be when showing with YCbCr the demonstration look (r2, g2, b2)=(95,147,72).
With the foregoing is prerequisite, and the demonstration look before the conversion and the permissible range of the demonstration look after the conversion are described.
For demonstration look before the conversion and the difference between the demonstration look after the conversion are diminished for user's sticky feeling, this permissible range can be set at: (1) makes the difference of demonstration look before the conversion and the demonstration look after the conversion minimum; (2) or make demonstration look before the conversion and the demonstration look after the conversion become advancing colour; (3) or the color that makes demonstration look before the conversion and the demonstration look after the conversion become identical systems; (4) or get rid of the tangible scope of sticky feeling.(1)～(4) wish it is following order, (1) is the strictest, and (4) are the loosest.Above-mentioned (R, G, B)=(16,16,16) and (Y, Cb Cr)=(16,128,128) satisfy above-mentioned (1).
In addition, (5) wish each specific image signal of first, second and third color format under the situation of being explained by the color format of self respectively and showing, expression is with of the same colour.Its reason is, if like this, under the situation of the color format that switches to other from color format arbitrarily, the initial demonstration form and aspect during noise elimination with.Noise elimination shown in Figure 9 satisfies above-mentioned (5) with signal of video signal.As shown in the drawing, (R, G, demonstration look B)=(16,16,16) they are the specific image signal of first color format (RGB purified signals), expression is near black color.The black of rgb signal is (0,0,0) as shown in Figure 5, even but (16,16,16), under situation about being displayed on as noise elimination usefulness in the integral image, the user also merely is identified as black completely.
(demonstration look Cr)=(16,128,128) is the specific image signal of second and third color format (a YCbCr purified signal), represents black as illustrated in fig. 5 for Y, Cb.At that point, satisfy above-mentioned (5).
In addition, (B)=(16,16,16) the demonstration look when being explained as the YCbCr color format is represented dirty-green for R, G.At that point, the dirty-green of the demonstration look after the conversion is the black advancing colour before the conversion, and its difference is minimum, we can say and satisfies above-mentioned (1).In addition, (Cr)=(16,128,128) the demonstration look when being explained as the RGB color format is represented dense purple for Y, Cb.At that point, the dense purple of the demonstration look after the conversion is the black advancing colour before the conversion, and its difference is minimum, we can say and satisfies above-mentioned (1).
When Figure 10 represents that rgb signal and YCbCr signal are 30 bits (each composition is 10 bits), 36 bits (each composition is 12 bits) and 48 bits (each composition is 16 bits) about the key diagram of noise elimination with the color of signal of video signal.Among this figure, each 8 bit components shown in Figure 9 expand to 10 bits, 12 bits and 16 bits.
That is, each composition during for 8 bits (R, G B)=(16,16,16),, then become if the value of 10 system numbers is labeled as 16 system numbers (0x10,0x10,0x10).Fill 0 of 2 bits by lowest order at each composition of 8 bits, expand to 10 bits each composition (R, G, B)=(0x40,0x40,0x40).Each composition during 10 bits (R, G, B)=(0x40,0x40 0x40), become when 10 systems are counted (64,64,64).
Equally, by fill 0 of 4 bits at lowest order, expand to 12 bits.Each composition during 12 bits (R, G, B)=(0x100,0x100 0x100), become when 10 systems (256,256,256).
Equally, by fill 0 of 8 bits at lowest order, expand to 16 bits.Each composition during 16 bits (R, G, B)=(0x1000,0x1000 0x1000), become when 10 systems (4096,4096,4096).
If each composition during 8 bits (Y, Cb, Cr)=(16,128,128) also with the above-mentioned bit expanded of similarly carrying out, then become (64,512,512) during 10 bits, become (256,2048 during 12 bits, 2048), become (4096,32768,32768) during 16 bits.
And the score value that respectively becomes of Figure 10 not necessarily must be this value, so long as in fact Deng Jia value just can, also can roughly be this value.
Figure 11 is the block diagram of the structure example of expression purified signal generating unit.As shown in the drawing, purified signal generating unit 105 comprises first signal generator 301 of the specific image signal (RGB purified signal) that produces first color format, produce the secondary signal generating unit 302 of the specific image signal (4: 4: 4 YCbCr purified signals) of second color format, produce the 3rd signal generator 303 of the specific image signal (4: 2: 2 YCbCr purified signals) of the 3rd color format, and selector 304.
First signal generator 301, secondary signal generating unit 302, the 3rd signal generator 33 produce each purified signal respectively according to the parameter that is set at control register portion 107.
Figure 12 is the block diagram of the structure example of expression control register portion 107.As shown in the drawing, control register portion 107 has register 401～404.
The instruction that register 401 is preserved from CPU110 is exported corresponding to the control signal of instructing to color transformation portion 102, identifying information bag distribution department 103, video efferent 104, purified signal generating unit 105, switch portion 106.Have in the instruction: to the instruction of color transformation portion 102 indication color forms switching, indicate the instruction of the switching of the represented color format of identifying information bags to identifying information bag distribution department 103, to the instruction that purified signal generating unit 105 indication purified signals produce, control is to the instruction of the selection of switch portion 106 etc.
Figure 13 is the figure of the control timing of the color format switching in the expression HDMI sending part 100.Among this figure, show the control timing when the YCbCr signal switches to rgb signal.The transverse axis express time.In addition, the signal of 6 signal indication transmitting apparatus 1 that are arranged in order from the top is from the signal of 2 signal indication receiving equipments 2 of below.Promptly, illustrate successively from the top: from the instruction of CPU110 to 100 outputs of HDMI sending part, input image data to 102 inputs of color transformation portion, image data from 102 outputs of color transformation portion, purified signal from 105 outputs of purified signal generating unit, signal of video signal/purified signal by switch portion 106 is selected and exported from the identifying information bag of identifying information bag distribution department 103 distribution, is received reception image data, reception identifying information bag that equipment 2 receives.
When CPU110 detects the straighforward operation of switchable color form, at first set the instruction (S1) that makes purified signal generating unit 105 produce the YCbCr purified signal in control register portion 107.That is, CPU110 sets first, second, third one-tenth score value respectively at register 402～404, also sets the control command that makes selector 304 select secondary signal generating unit 302 or the 3rd signal generator 303 at register 401.Thereby purified signal generating unit 105 produces the YCbCr purified signal.
Then, CPU110 sets in register portion 401 and switch portion 106 is switched so that be chosen as the instruction (S2) of the purified signal of purified signal generating unit 105 from the output of color transformation portion 102.Thus, from video efferent 104 output YCbCr purified signals.
Moreover, CPU110 sets switching command at register 401, this switching command indication identifying information bag distribution department 103 will represent that the identifying information bag of YCbCr signal switches to the identifying information bag (S3) of expression rgb signal, further, setting indication color transformation component 102 at register 401 is the switching command (S4) of rgb signal with YCbCr signal transformation.The switching timing of the switching timing of the identifying information bag of above-mentioned S3 and the color format of above-mentioned S4 can be different, so the not additional heavier processing load that is used to switch on CPU110, the disposal ability of CPU110 is low also can.
Then, CPU110 sets at register 401 and switch portion 116 is switched so that be chosen as the instruction (S5) of the signal of video signal output of color transformation portion 102 from the purified signal of purified signal generating unit 105.Thereby, from the end of output of the YCbCr purified signal of video efferent 104, output transform the RGB signal of video signal of color format.
Moreover CPU110 sets the instruction (S6) that makes purified signal generating unit 105 produce the RGB purified signal at control register 107.This is the preparation for color format conversion next time.
In the receiving equipment 2, receive the YCbCr purified signal during the Tb+Tc in the drawings.It during this Tb+Tc number frame time degree.Tb represents the YCbCr form during receiving identification and wrapping in, during Tc represent rgb format.Its result, during Tb the YCbCr purified signal be interpreted as the YCbCr form show, so show black.Moreover, during Tc the YCbCr purified signal be interpreted as rgb format show, so show dense purple.
So, when color format switches, show the noise elimination image that is changed to strong green from black, therefore, can reduce look and become.Its result does not make the user produce sticky feeling, does not produce the uneasiness sense of fault yet.
Figure 13 shows the situation that switches to rgb signal from the YCbCr signal, but it is also identical to switch to the situation of YCbCr signal from rgb signal.Under the latter's the situation, output RGB purified signal.
And the noise elimination of the signal of video signal when the existing different color format conversion of color table has been described does not in the above-described embodiment need simultaneously voice signal to be carried out noise elimination.In addition, also can be under the situation that the identical input signal of video signal of color format is switched (when for example the channel that carries out of user switches etc.) carry out noise elimination.Under this situation,, arbitrary image can be used as the noise elimination image if color format is identical.
And, also can be the structure that has purified signal generating unit 105 in the inside of video input part 101.And, also can be in prescribed limit, to select the output of noise elimination as illustrated in fig. 14 with signal.
And the switching timing of the switching timing of the identifying information bag of above-mentioned S3 and the color format of above-mentioned S4 can be opposite.Even the situation that the identifying information bag of above-mentioned S3 switches takes place after the switching of the color format of S4, also can obtain same effect.
(second execution mode)
In the first embodiment, illustrated that mainly during noise elimination noise elimination image is changed to the situation of dense purple from black.In second execution mode, the image output device that further reduces the variation of noise elimination image is described.Therefore, temporarily stop the output of identifying information bag in the scope of the image output device of present embodiment during noise elimination.In receiving equipment, in the transmission stopping period of identifying information bag, signal of video signal is handled as the form of acquiescence (generally being rgb signal).Thereby, carry out the switching that the video signal format in the receiving equipment is explained in the moment more early, can further reduce the variation of noise elimination image.
Figure 15 is the block diagram of the structure of the HDMI sending part 120 in the expression present embodiment.In the transmitting apparatus 1 of Fig. 7, replace HDMI sending part 100 and this HDMI sending part 120 is set, to compare with the HDMI sending part 100 of Fig. 8, difference is to have carried switch portion 121.Having given identical Reference numeral for the inscape identical with Fig. 8, so omit explanation, is that the center describes with the difference below.
The instruction that the register 401 of the control register portion 107 of this figure is preserved from CPU110 is to the instruction corresponding control signal of switch portion 121 outputs with the control selection.
Figure 16 is the figure of the control timing of the color format switching in the expression HDMI sending part 120.This there is shown the control timing when the YCbCr signal switches to rgb signal.The transverse axis express time.Illustrate successively from top to bottom: from the instruction of CPU110 to 120 outputs of HDMI sending part, be input to the input image data of color transformation portion 102, image data from 102 outputs of color transformation portion, purified signal from 105 outputs of purified signal generating unit, signal of video signal/purified signal of being selected and export by switch portion 106, identifying information bag from 103 distribution of identifying information bag distribution department, the identifying information bag of being selected and exporting by switch portion 121 is received reception image data, reception identifying information bag that equipment 2 receives.
When CPU110 detects the straighforward operation of switchable color form, at first set the instruction (S1) that makes purified signal generating unit 105 produce the YCbCr purified signal in control register portion 107.That is, CPU110 sets first, second, third one-tenth score value respectively at register 402～404, further sets the control command that makes selector 304 select secondary signal generating unit 302 or the 3rd signal generator 303 at register 401.
Then, CPU110 sets at register 401 and switch portion 106 is switched so that select the instruction (S2) of the purified signal of purified signal generating unit 105 according to the output of color transformation portion 102.Thus, from video efferent 104 output YCbCr purified signals.
Moreover CPU110 sets at register 401 and switch portion 121 is switched so that stop the instruction (S7) of identifying information bag.Thereby, stop the identifying information bag from video efferent 104.
Moreover, set the instruction (S3) that makes purified signal generating unit 105 produce the RGB purified signal in control register portion 107, further, CPU110 sets the switching command (S6) that the identifying information bag of indicating identifying information bag distribution department 103 will represent the YCbCr signal switches to the identifying information bag of expression rgb signal at register 401.This is the preparation for next time color format conversion.
Further, setting indication color transformation component 102 at register 401 is the switching command (S4) of rgb signal with YCbCr signal transformation.
Then, CPU110 sets at register 401 and switch portion 121 is switched so that export the instruction (S8) of identifying information bag.Thus, from video efferent 104 output identifying information bags.
The switching timing based on the color format of purified signal of the switching timing of the identifying information bag of above-mentioned S7, S8 and above-mentioned S3 can be different, therefore, the additional heavier processing load that is used to switch on CPU110, the disposal ability of CPU110 is low also can.
Then, CPU110 sets at register 401 and switch portion 106 is switched so that be chosen as the instruction of the signal of video signal output (S5) of color transformation portion 102 from the purified signal of purified signal generating unit 105.Thus, from the end of output of the YCbCr purified signal of video efferent 104, output transform the RGB signal of video signal of color format.
In receiving equipment 2, receive the YCbCr purified signal during the Tb+Tc in the drawings, in the interval RGB purified signal that receives of Td.Tb represents the YCbCr form during receiving identification and wrapping in, during Tc represent rgb format, during Td represent rgb format.
Its result, receiving equipment 2 during Tb the YCbCr purified signal be interpreted as the YCbCr form show, so show black.Moreover, during Tc, the YCbCr purified signal is interpreted as rgb format shows, so show purple.Moreover, during Td, the RGB purified signal is interpreted as rgb format shows, so show black.
So, when color format switches, show that from black display be dense purple and the noise elimination image that is changed to black once more, so, can reduce look and become.Its result does not make the user produce sticky feeling, can not produce the uneasiness sense to fault yet.
The situation that the YCbCr signal is switched to rgb signal has been shown among Figure 16, but has switched under the situation of YCbCr signal also identical from rgb signal.Under the latter's the situation, output RGB purified signal.
In addition, also can be the structure that is provided with switch portion 121 in the inside of identifying information bag distribution department 103.
And the switching timing of the switching timing of the identifying information bag of the above-mentioned S6 among Figure 16 and the color format of above-mentioned S4 also can be opposite.Also can obtain same result even after the color format of S4 switches, take place under the situation of identifying information bag switching of above-mentioned S6.
(the 3rd execution mode)
In the first embodiment, illustrated that mainly the noise elimination image is changed to the situation of dense purple from black during noise elimination.In the 3rd execution mode, explanation can be eliminated the image output device of noise elimination image change.Therefore, temporarily stop the output of specific image signal in the scope of the image output device of present embodiment during noise elimination.Receiving equipment is presented at the inner image that generates of receiving equipment in the transmission stopping period of signal of video signal.This image-dependent is in receiving equipment and difference, but in general, is picture black, blue images (so-called blue screen), the display image that formed by the signal of video signal before the noise elimination etc.Thus, carry out the switching of the display image in the receiving equipment, eliminated the variation of noise elimination image by receiving equipment in the moment more early.Perhaps, the same with second execution mode, carry out the switching that the form of signal of video signal is explained in the moment more early, can further reduce the variation of noise elimination image.
Figure 17 is the block diagram of the structure of the HDMI sending part 13 in the expression present embodiment.Be provided with this HDMI sending part 130 in the transmitting apparatus 1 of Fig. 7, replace HDMI sending part 100, compare with the HDMI sending part 100 of Fig. 8, difference is to have carried switch portion 131.Having given identical Reference numeral for the inscape identical with Fig. 8, and omitted its explanation, is that the center describes below with the difference.
The instruction that the register 401 of the control register portion 107 of this figure is preserved from CPU110 is to the instruction corresponding control signal of switch portion 131 outputs with the control selection.
Figure 18 is the figure of the control timing of the color format switching in the expression HDMI sending part 130.This there is shown the control timing when the YCbCr signal switches to rgb signal.The transverse axis express time.Illustrate successively from the top: from the instruction of CPU110 to 120 outputs of HDMI sending part, be input to the input image data of color transformation portion 102, image data from 102 outputs of color transformation portion, purified signal from 105 outputs of purified signal generating unit, signal of video signal/purified signal of being selected and export by switch portion 106, identifying information bag from 103 distribution of identifying information bag distribution department, by the output image signal that switch portion 131 is selected and exported, be received reception image data, reception identifying information bag that equipment 2 receives.
When CPU110 detects the straighforward operation of switchable color form, at first set the instruction (S1) that makes purified signal generating unit 105 produce the YCbCr purified signal in control register portion 107.That is, CPU110 sets first, second, third one-tenth score value respectively at register 402～404, further sets the control command that makes selector 304 select secondary signal generating unit 302 or the 3rd signal generator 303 at register 401.
Then, CPU110 sets at register 401 switch portion 106 is switched, so that be chosen as the instruction (S2) of the purified signal of purified signal generating unit 105 from the output from color transformation portion 102.Thus, from video efferent 104 output YCbCr purified signals.
Moreover CPU110 sets at register 401 and switch portion 131 is switched so that stop the instruction (S7) of output image signal.Thus, stop output image signal from video efferent 104.
Further, CPU110 sets indication identifying information bag distribution department 103 at register 401 will represent that the identifying information bag of YCbCr signal switches to the switching command (S3) of the identifying information bag of expression rgb signal, then, CPU110 sets the instruction (S6) that makes purified signal generating unit 105 produce the RGB purified signal at control register 107.This is the preparation for next time color format conversion.
Moreover setting indication color transformation component 102 at register 401 is the switching command (S4) of rgb signal with YCbCr signal transformation.
Further, CPU110 sets at register 401 switch portion 131 is switched so that with the instruction (S8) of output image signal output.Thus, output is from the output image signal of video efferent 104.
The switching timing based on the color format of purified signal of the switching timing of the identifying information bag of above-mentioned S7, S8 and above-mentioned S3 also can be different, so, the additional heavier processing load that is used to switch on CPU110, the disposal ability of CPU110 is low also can.
Then, register 401 set make switch portion 106 switch with, just be chosen as the instruction (S5) of the signal of video signal output of color transformation portion 102 from the purified signal of purified signal generating unit 105.Thus, from the end of output of the YCbCr purified signal of video efferent 104, output transform the RGB signal of video signal of color format.
In receiving equipment 2, receive the YCbCr purified signal during the Tb in the drawings, during Td, receive the RGB purified signal.Tb represents the YCbCr form during receiving identification and wrapping in, during Td represent rgb format.
Need the number frame during the Tb.During expression does not receive whatever during the Tc.
Its result, receiving equipment 2 during Tb the YCbCr purified signal be interpreted as the YCbCr form show, so show black.Moreover, during Tc, do not receive signal of video signal, the identifying information any signal in wrapping in, so show black at receiver side.Moreover, during Td, the RGB purified signal is interpreted as rgb format shows, so show black.
So, when color format switches, show the noise elimination image that is changed to black from black once more, so, can reduce look and become.Its result does not make the user produce sticky feeling, can not produce the uneasiness sense to fault yet.
The situation that switches to rgb signal from the YCbCr signal has been shown among Figure 18, also identical for the situation that switches to the YCbCr signal from rgb signal.Under the latter's the situation, output RGB purified signal.
And, also can be the structure that has switch portion 131 in the inside of video efferent 104.
Figure 19 has represented to carry the equipment example of image output device of the present invention.As the outside input, have tuning 152 and DVD/CD record-playback portion 150, and the signal of video signal that has input carries out the image coding/lsb decoder 151 of coding/decoding to image output device output of the present invention.
And, in each above-mentioned execution mode, illustrated as the form of signal of video signal and switched YCbCr signal and these 2 forms of rgb signal and the image output device of output image signal, but these 2 forms are not limited to these.For example, also can be xvYCC (Extended YCCColorimetry for Video Applications, IEC 61966-2-4 standard) signal and these 2 forms of rgb signal.
In addition, the switching timing of the color format of the switching timing of the identifying information bag of the above-mentioned S3 among Figure 18 and above-mentioned S4 also can be opposite.Also can obtain effect same even after the color format of S4 switches, take place under the situation of switching of identifying information bag of above-mentioned S3.
The present invention is applicable to the dispensing device that sends signal of video signal to receiving systems such as television receivers, specifically, is applicable to the STB (set-top box), digital broadcasting tuner card of DVD player, DVD register, receiving digital broadcast etc.
Although the example by the reference accompanying drawing describes the present invention in detail, should note to one skilled in the art, can carry out the change and the modification of variety of way obviously.Therefore, unless such change and modification have broken away from scope of the present invention, otherwise should be interpreted as being included in the present invention.
Claims (22)
1. an image output device is characterized in that, comprising:
The image output unit can show between the first different forms and second form at color table and switch form, comes output image signal;
The purified signal generation unit produces specific image signal as the noise elimination signal of video signal, and this specific image signal is the specific image signal of the difference minimum of the demonstration look of demonstration look with different form explanation time the during with the form explanation of this specific image signal; And
Selected cell is selected the signal of video signal of self imaging output unit and from one in the purified signal of purified signal generation unit, and exports selected signal.
2. image output device as claimed in claim 1 is characterized in that,
Above-mentioned purified signal generation unit,
Above-mentioned image output unit with signal of video signal when first form switches to second form, clip this switching during produce above-mentioned specific image signal with first form,
Above-mentioned image output unit with signal of video signal when second form switches to first form, clip this switching during produce above-mentioned specific image signal with second form;
The above-mentioned specific image signal of first form and the above-mentioned specific image signal of second form are represented in fact with of the same colour.
3. image output device as claimed in claim 2 is characterized in that,
Above-mentioned image output unit switches to second form with signal of video signal from first form;
Above-mentioned specific image signal generates with first form;
Above-mentioned first form is the rgb signal performance of 24 bits of composition in order to the of all kinds of RGB;
The color of the difference minimum of the demonstration look the when specific image signal of exporting above-mentioned first form is interpreted as first form, the demonstration look when being interpreted as second form, above-mentioned second form is with brightness value and 2 forms that value of chromatism is 24 bits of composition.
4. image output device as claimed in claim 2 is characterized in that,
Above-mentioned image output unit switches to first form with signal of video signal from second form;
Above-mentioned specific image signal generates with second form;
Above-mentioned second form is in order to the YCbCr performance of brightness value and 2 values of chromatism 24 bits that are composition;
The color of the difference minimum of the demonstration look the when specific image signal of exporting above-mentioned second form is interpreted as second form, the demonstration look when being interpreted as first form, above-mentioned first form are the forms in order to the RGB performance of 24 bits for composition of all kinds of RGB.
5. image output device as claimed in claim 1 is characterized in that,
Above-mentioned reflection output device also comprises:
Generation unit generates the some identifying informations in expression first form and second form;
Output unit at overlapping identifying information from the signal of video signal of selected cell output, is exported superimposed image signal to the outside;
Control unit is controlled above-mentioned generation unit so that in during clipping that form switches, generate with switch before and after the corresponding identifying information of form.
6. image output device as claimed in claim 5 is characterized in that,
Above-mentioned control unit is controlled above-mentioned generation unit, so that in the different timing of timing of switching with the form of image output unit, switch above-mentioned identifying information.
7. image output device as claimed in claim 1 is characterized in that,
Above-mentioned image output device also comprises: generation unit generates the some identifying informations in expression first form and second form; Output unit at overlapping identifying information from the signal of video signal of selected cell output, is exported superimposed image signal to the outside;
Above-mentioned purified signal generation unit comprises:
The rgb signal generating unit, producing in order to RGB of all kinds be the above-mentioned specific image signal of first form that shows of the RGB of 24 bits of composition;
The YCbCr signal generator, the above-mentioned specific image signal of second form of the YCbCr performance of 24 bits that to generate in order to brightness value and 2 values of chromatism be composition; And
Selection portion, select the above-mentioned specific image signal of first form that produces by the rgb signal generation unit and the above-mentioned specific image signal of second form that produces by YCbCr signal generation unit in one;
Above-mentioned control unit is worked in the following order:
Make above-mentioned selection portion select the specific image signal of first form;
The control selected cell will select the signal of video signal from by the output of image output unit to switch to the purified signal of being exported by selection portion;
Indication signal of video signal output unit switches to second form with the form of signal of video signal from first form;
Control above-mentioned output unit, so that in during clipping that form switches, the different timing of timing switching with the form of image output unit generates corresponding to the identifying information that switches;
The control selected cell will select the purified signal from by selection portion output to switch to the signal of video signal of being exported by the image output unit.
8. image output device as claimed in claim 1 is characterized in that,
The difference that above-mentioned specific image signal has the demonstration look of demonstration look when explaining with different forms when explaining with the form of this specific image signal becomes the score value that becomes of minimum.
9. image output device as claimed in claim 1 is characterized in that,
Above-mentioned purified signal generation unit comprises:
The rgb signal generating unit produces the above-mentioned specific image signal with first form of RGB performance;
The YCbCr signal generator produces the above-mentioned specific image signal with second form of YCbCr performance; And
Selection portion, select the above-mentioned specific image signal of first form that produces by the rgb signal generation unit and the above-mentioned specific image signal of second form that produces by YCbCr signal generation unit in one;
Above-mentioned control unit is carried out following work:
Make selection portion select the specific image signal of first form;
The control selected cell will select the signal of video signal from by the output of image output unit to switch to the purified signal of being exported by selection portion;
Indication signal of video signal output unit switches to second form with the form of signal of video signal from first form;
The control selected cell will select the purified signal from by selection portion output to switch to the signal of video signal of being exported by the image output unit.
10. image output device as claimed in claim 1 is characterized in that,
Above-mentioned first form is R, G, the B performance of 24 bits of composition in order to the of all kinds of RGB, and the one-tenth score value of the specific image signal of above-mentioned first form comes down to (16,16,16);
Above-mentioned second form is in order to the YCbCr performance of brightness value and 2 values of chromatism 24 bits that are composition, and the one-tenth score value of the specific image signal of above-mentioned second form comes down to (16,128,128).
11. image output device as claimed in claim 1 is characterized in that,
Above-mentioned first form is the rgb signal performance of 30 bits, 36 bits or 48 bits of composition in order to the of all kinds of RGB, the one-tenth score value of the specific image signal of above-mentioned first form comes down to (64 when 30 bits, 64,64), when 36 bits, come down to (256,256,256), when 48 bits, come down to (4096,4096,4096);
Above-mentioned second form is in order to the YCbCr performance of brightness value and 2 values of chromatism be composition 30 bits, 36 bits or 48 bits, the one-tenth score value of the specific image signal of above-mentioned second form comes down to (64 when 30 bits, 512,512), when 36 bits, come down to (256,2048,2048), when 48 bits, come down to (4096,32768,32768).
12. image output device as claimed in claim 1 is characterized in that,
Above-mentioned image output device also comprises:
Generation unit generates the some identifying informations in expression first form and second form;
Output unit at overlapping identifying information from the signal of video signal of above-mentioned selected cell output, is exported superimposed image signal to the outside;
Switch element is selected whether to export identifying information from above-mentioned generation unit to above-mentioned output unit; And
Control unit is controlled above-mentioned switch element, so that in during the form switching that clips the image output unit, do not export identifying information.
13. image output device as claimed in claim 1 is characterized in that,
Above-mentioned image output device also comprises:
Generation unit generates the some identifying informations in expression first form and second form;
Output unit at overlapping identifying information from the signal of video signal of above-mentioned selected cell output, is exported superimposed image signal to the outside;
Whether switch element is selected from above-mentioned output unit to the said external output image signal; And
Control unit is controlled above-mentioned switch element, so as selected than above-mentioned selected cell purified signal during short during, do not export above-mentioned specific image signal.
14. an image output device is characterized in that, comprising:
The image output unit can show between the first different forms and second form at color table and switch form, comes output image signal;
The purified signal generation unit, produce specific image signal as the noise elimination signal of video signal, this specific image signal is that demonstration look when explaining with the form of this specific image signal and the difference visually between the demonstration look during with different form explanation are in the interior specific image signal of prescribed limit; And
Selected cell is selected the signal of video signal of self imaging output unit and from one in the purified signal of purified signal generation unit, and exports selected signal.
15. image output device as claimed in claim 14 is characterized in that,
Above-mentioned first form is the rgb signal performance of 30 bits, 36 bits or 48 bits of composition in order to the of all kinds of RGB, the one-tenth score value of the specific image signal of above-mentioned first form, when 30 bits, come down to (64,64,64), when 36 bits, come down to (256,256,256), when 48 bits, come down to (4096,4096,4096);
Above-mentioned second form is in order to the YCbCr performance of brightness value and 2 values of chromatism be composition 30 bits, 36 bits or 48 bits, the one-tenth score value of the specific image signal of above-mentioned second form, when 30 bits, come down to (64,512,512), when 36 bits, come down to (256,2048,2048), when 48 bits, come down to (4096,32768,32768).
16. image output device as claimed in claim 14 is characterized in that,
Above-mentioned image output device also comprises:
Generation unit generates the some identifying informations in expression first form and second form;
Output unit at overlapping identifying information from the signal of video signal of above-mentioned selected cell output, is exported superimposed image signal to the outside;
Switch element is selected whether to export identifying information from above-mentioned generation unit to above-mentioned output unit; And
Control unit is controlled above-mentioned switch element, so that do not export identifying information in during the form switching that clips the image output unit.
17. image output device as claimed in claim 14 is characterized in that,
Above-mentioned image output device also comprises:
Generation unit generates the some identifying informations in expression first form and second form;
Output unit at overlapping identifying information from the signal of video signal of above-mentioned selected cell output, is exported superimposed image signal to the outside;
Whether switch element is selected from above-mentioned output unit to the said external output image signal; And
Control unit is controlled above-mentioned switch element, so as selected than above-mentioned selected cell purified signal during short during, do not export above-mentioned specific image signal.
18. an image documentation equipment is characterized in that, comprising:
Image output device;
The image input unit, the image data that input is encoded; And
Decoding unit is decoded to the image data of importing from above-mentioned input unit, and is supplied with above-mentioned image output unit;
In the above-mentioned image output device,
Above-mentioned first form is the RGB performance of 24 bits of composition in order to the of all kinds of RGB, and the one-tenth score value of the specific image signal of above-mentioned first form comes down to (16,16,16);
Above-mentioned second form is in order to the YCbCr performance of brightness value and 2 values of chromatism 24 bits that are composition, and the one-tenth score value of the specific image signal of above-mentioned second form comes down to (16,128,128).
19. the control method of an image output device is characterized in that,
This image output device comprises: the image efferent can show the form that switches signal of video signal between the first different forms and second form at color table, and export above-mentioned signal of video signal; The purified signal generating unit produces signal of video signal as the noise elimination signal of video signal; And selection portion, select the signal of video signal of self imaging output unit and from one in the purified signal of purified signal generation unit, and export selected signal;
In this control method,
Produce specific image signal as the noise elimination signal of video signal from the purified signal generating unit, this specific image signal is that demonstration look when explaining with the form of this specific image signal and the difference visually between the demonstration look during with different form explanation are in the interior specific image signal of prescribed limit;
The control selection portion will select the signal of video signal from by the output of image efferent to switch to the purified signal of being exported by the purified signal generating unit;
Indication signal of video signal efferent switches to second form with the form of signal of video signal from first form;
The control selection portion will select the purified signal from by selection portion output to switch to the signal of video signal of being exported by the image output unit.
20. the control method of an image output device is characterized in that,
This image output device comprises: the image efferent can show the form that switches signal of video signal between the first different forms and second form at color table, and export above-mentioned signal of video signal; The purified signal generating unit produces signal of video signal as the noise elimination signal of video signal; And selection portion, select the signal of video signal of self imaging output unit and from one in the purified signal of purified signal generation unit, and export selected signal;
Produce specific image signal as the noise elimination signal of video signal from the purified signal generating unit, this specific image signal is the specific image signal that the demonstration form and aspect of demonstration look with different form explanation time the when explaining with the form of this specific image signal are similar to;
The control selection portion will select the signal of video signal from by the output of image efferent to switch to the purified signal of being exported by the purified signal generating unit;
Indication signal of video signal efferent switches to second form with the form of signal of video signal from first form;
The control selection portion will select the purified signal from by selection portion output to switch to the signal of video signal of being exported by the image output unit.
21. control method as claimed in claim 20 is characterized in that,
The difference that above-mentioned specific image signal has the demonstration look of demonstration look when explaining with different forms when explaining with the form of this specific image signal becomes the score value that becomes of minimum.
22. control method as claimed in claim 20 is characterized in that,
Difference visually above-mentioned specific image signal, between the demonstration look when explaining with the form of this specific image signal and the demonstration look during with different form explanation is in the prescribed limit.
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| JP2006055541 | 2006-03-01 | ||
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105609044A (en) * | 2015-12-24 | 2016-05-25 | 大连集思特科技有限公司 | Video control system and method of LED color difference compensation |
| CN105794205A (en) * | 2013-12-04 | 2016-07-20 | 奥林巴斯株式会社 | Wireless transmission system |
| CN108540734A (en) * | 2018-05-16 | 2018-09-14 | 中央电视台 | A kind of switching method, device, system and the electronic equipment of 4K video/audio signals |
-
2007
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105794205A (en) * | 2013-12-04 | 2016-07-20 | 奥林巴斯株式会社 | Wireless transmission system |
| CN105794205B (en) * | 2013-12-04 | 2017-07-21 | 奥林巴斯株式会社 | Wireless transmitting system |
| CN105609044A (en) * | 2015-12-24 | 2016-05-25 | 大连集思特科技有限公司 | Video control system and method of LED color difference compensation |
| CN108540734A (en) * | 2018-05-16 | 2018-09-14 | 中央电视台 | A kind of switching method, device, system and the electronic equipment of 4K video/audio signals |
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