CN1166751A - Picture switching apparatus - Google Patents
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- CN1166751A CN1166751A CN97109745A CN97109745A CN1166751A CN 1166751 A CN1166751 A CN 1166751A CN 97109745 A CN97109745 A CN 97109745A CN 97109745 A CN97109745 A CN 97109745A CN 1166751 A CN1166751 A CN 1166751A
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Abstract
A picture switching apparatus for executing a fade-out/fade-in processing between adjacent video recording files includes a multiplier for multiplying a decoded video data with a multiplication coefficient (1-km), a multiplier for multiplying an output data of a data output circuit with a multiplication coefficient (km) and a data synthesizer for summing results of multiplication from the respective multipliers. The picture switching apparatus thus constructed performs the fade-out/fade-in processing without modification of the original video data for fading processing, by controlling km at the junction between the files such that the mining ratio of the color data for fading to a decoded color data is gradually increased/decreased.
Description
The present invention relates to picture switching apparatus, the picture switching apparatus that fades out/fade in and handle especially for joining place graphical presentation system, between file enters, this graphical presentation system is from being reading video data on the recording mediums such as the CD-Video (compact disc) of unit record encoding compression video data or picture CD with the file, decodes and plays back.
Can from as the CD-Video of the remodeling of audio frequency CD (audio dedicated CD) or the picture CD simultaneously AV (phonotape and videotape) system of reproduced picture and sound recently just popular, such as karaoke OK system etc.
And, be accompanied by real multimedia era, worked out DVD (digital video disk) standard, develop all kinds of and the AV system DVD compatibility.
The video data of each picture and corresponding to the voice data of each picture by MPEG (animation expert group) system compresses, and be recorded in the dispersion file on this dish, when video data will be regenerated by the AV system, video data by successively or selectivity enter each file, and the data flow of the video data read like this decoded regenerates.
In said system, because the process that enters is that unit carries out with the file, the picture relevant with file is presented on the screen suddenly, the image that also has the picture relevant on the screen with first preceding document, the image of the picture of this elder generation's preceding document because the regeneration of picture and demonstration finish and disappearing, so the switching that causes picture nature very.
Though the unnatural problem that picture switches can be handled the coded data that obtains and solves by adopting respectively at the head of each file and afterbody by fading out and fading in, but fading in and fading out of the former video data in each file handled very complicatedly, need make amendment to former video data.
In playing process, when the instruction of sending about the way of search of the specific file of appointment, system operates in the entering after the end of current in progress first preceding document, is switched to and enters this specific file.So, handle by fading in plays relevant with next file when visual, the visual unexpected termination of current in progress file.
In order to address the above problem, one object of the present invention is to be provided for the picture switching apparatus of the graphical presentation system of above-mentioned CD-Video or picture CD, after the image of current in progress file fades out, this picture switching apparatus always handles the image of played file by fading in, no matter the sequential of file selection instruction must not revised former video data.
Another object of the present invention is to be provided for the picture switching apparatus of graphical presentation system, this graphical presentation system is selected one from the file of many record coding video datas, reading video data from selected file, reading coding video frequency data is decoded, regenerate and play back; This picture switching apparatus perhaps as the selection instruction of the control data in the data flow that is contained in video data, switches to the image of current in progress file in the image of selected file according to the selection instruction from operation part.
A further object of the invention is to be provided for the picture switching apparatus of graphical presentation system, this graphical presentation system is selected one from the file of many record coding video datas, reading video data from the selected file, the coding video frequency data of being read is decoded, regenerate and play back; This picture switching apparatus is characterised in that and comprises: the data generating apparatus that produces the gradual change video data; The fade out condition setting apparatus that fades out of maximum mixing ratio of time and gradual change video data and decode video data of setting; When changing the mixing ratio of diminuendo video data and decode video data, decode video data and from the data synthesis device of the gradual change video data of data generating device can add up; And the response selection instruction, in the time of fading out of the condition setting apparatus that fades out, increase the control device that fades out of the data mixing ratio of data synthesis device gradually with the control data synthesizer from 0 to maximum mixing ratio.
In this structure, time and mixing ratio condition that the control device that fades out is set according to the condition setting apparatus that fades out, the control data synthesizer, increase the data mixing ratio of gradual change video data in decode video data gradually, no matter current in progress image might be faded out and stop to the sequential of the selection instruction that image switches.The condition setting apparatus that fades out can be can be arbitrarily partly to set the device of described condition or comprise the device of inner prerequisite from peripheral operation, and uses wherein a kind of regularly.And, might allow one of the condition that condition setting apparatus sets of fading out fixing, and other condition can be established arbitrarily.
The present invention has a purpose to be to be provided for the picture switching apparatus of graphical presentation system in addition, this graphical presentation system is selected one from the file of many record coding video datas, reading video data from selected file, the coding video frequency data of being read is decoded, regenerate and play back; This picture switching apparatus is characterised in that and comprises: the data generating apparatus that produces the gradual change video data; The fade in condition setting apparatus that fades in of maximum mixing ratio of time and gradual change video data and decode video data of setting; When changing the mixing ratio of gradual change video data and decode video data, decode video data and from the data synthesis device of the gradual change video data of data generating device can add up; The checkout gear whether decision is finished according to the decoding of the start frame data of the coding video frequency data of the selected file of selection instruction or field data, and when checkout gear detects the decode procedure end, the control data synthesizer reduces the control device that fades in of the data mixing ratio of data synthesis device gradually from maximum mixing ratio to 0 in the time of fading in that the condition device that fades in is set.
In this structure, the control device that fades in is confirmed time and the mixing ratio condition set when the decoding of the start frame data of selected file or field data is finished according to the condition setting apparatus that fades at checkout gear, the control data synthesizer, reduce the data mixing ratio of gradual change video data in decode video data gradually, might fade in and show the image of selected file.
A further object of the invention is to be provided for the picture switching apparatus of graphical presentation system, this graphical presentation system is selected one from the file of many record coding video datas, reading video data from selected file, the coding video frequency data of being read is decoded, regenerate and play back; This picture switching apparatus is characterised in that and comprises: the data generating apparatus that produces the gradual change video data; The fade out condition setting apparatus that fades out of maximum mixing ratio of time and gradual change video data and decode video data of setting; When changing the mixing ratio of gradual change video data and decode video data, decode video data and from the data synthesis device of the gradual change video data of data generating apparatus can add up; Response selection instruction and control data synthesizer are in the time of fading out that the condition setting apparatus that fades out is set, increase the control device that fades out of the data mixing ratio of data synthesis device gradually from 0 to maximum mixing ratio; The fade in condition setting apparatus that fades in of time of setting; Determine the checkout gear whether finished according to the decoding of the start frame data of the coding video frequency data of the selected file of selection instruction or field data; And when checkout gear detected the decoding end, the control data synthesizer reduced the control device that fades in of the data mixing ratio of data synthesis device gradually from the maximum mixing ratio to 0 of the control device control of fading out in the time of fading in that the condition device that fades in is set.
Use this structure, might in the fade out processing procedure relevant, automatically use the maximum mixing ratio of gradual change decode video data with the image of first preceding document, and, in the time of fading in that the condition setting apparatus that fades in is set, it is next visual to begin to fade in from maximum mixing ratio, and shows next image.That is to say, might deal with separately under the situation of time any setting, finish the processing procedure of fading in of image of fade out processing procedure and next file of the image of first preceding document continuously, and make the visual state (gradual change state) that fades out when finishing dealing with fading in when handling beginning identical.
Fig. 1 represents first embodiment according to picture switching apparatus of the present invention, uses the circuit diagram of the video/audio frequency regenerative system of CD-Video;
Fig. 2 is the flow chart that the operation of system when fading in/fading out treatment conditions is set in expression;
Fig. 3 is that fading out among expression first embodiment handled the flow chart of operation;
Fig. 4 is that fading among expression first embodiment handled the flow chart of operation;
Fig. 5 represents the state of processing on each time period that fade out/fade in of the data flow of file (FP) and file (Fs);
Fig. 6 represents the variation that monitor screen takes place because of the processing of fading out/fade in;
Fig. 7 is that fading out among second embodiment of expression picture switching apparatus of the present invention handled the flow chart of operation;
Fig. 8 is that fading among expression second embodiment handled the flow chart of operation.
Describe first embodiment below with reference to the accompanying drawings in detail according to of the present invention changing device.Fig. 1 represents to use the system circuit diagram of the video/audio frequency regenerative system of CD-Video.In Fig. 1, label 1 and 2 represents to have the player and the monitor of display, audio frequency regenerative circuit and loud speaker respectively.The basic operation of broadcasting into machine 1 and each parts will simply be described below.
Be recorded on the CD-Video 11 with relevant audio data according to the MPEG1 system coding and video data that each file is all inequality.That is to say that video data comprises I (in-line coding) image, being coded in the frame of it finished; P (predictive coding) image, it is predicted according to previous frame; And B (bi-directional predictive coding) image, it is predicted according to previous and frame subsequently, based on the frame structure of mpeg system, be formed under the time shaft predictive mode have 24 to 30 frames (I, B, B, P, B, B ..., P, B, B, P) GOP (group of picture).Each image comprises the separately brightness data and the color data of coding.
Audio data utilizes sub-band encoding process and auditory properties, according to (the MPEG1 of adaptive bit allocation process system (adaptive bit assigning processing system); The I layer) encodes.
The coding video frequency data and the audio data that are recorded on the CD-Video 11 are read by optical pick-up 12, and the gained signal is input to CD decoder/servo control circuit 14 after radio frequency (RF) amplifier 13 amplifies.
The EFM that CD decoder/servo control circuit 14 will be obtained by RF amplifier 13 (eight to ten four modulation) signal decoding, and read sub-code data.Then, 14 control signals relevant with the tracking focal length with the axle rotating speed of optical pick-up 12 of CD decoder/servo control circuit output to servo circuit 15.Servo circuit 15 these control signals of response, rotating speed control and the focus controlling carrying out spindle motors 16 and follow the tracks of motor 17.
The data that microcomputer circuit 18 will be read by the TOC (catalogue listing) of CD-Video 11 deposit internal storage in, take out sub-code data according to operation part 19 by the control command of input I/F 20 inputs, control CD decoder/servo control circuit 14, by driver 21 output state information etc. to the display part 22, with display message etc. thereon.
Microcomputer circuit 23 connects CD-Video decoder 24 by data/address bus b2, b3, b4, b5, and data/address bus b2 is used for transmission means information, and obtains the state information of the expression program treatment state on the CD-Video decoder 24; Data/address bus b3 is used for the exchange of transmitting control data address information and the signal of control of video CD decoder 24; Data/address bus b4 is used for obtaining the information of the data flow that is input to CD-Video decoder 24; Data/address bus b5 is used for obtaining the audio frequency state information from CD-Video decoder 24.And microcomputer circuit 23 connects microcomputer circuit 18 by data/address bus b0, and this data/address bus b0 receives control command, and transmitting state information.By said structure, microcomputer circuit 23 controls comprise the whole system of CD-Video decoder 24.
CD-Video decoder 24 comprises RISC (Reduced Instruction Set Computer) processor 31, main bus I/F32, video data decoder 33, audio data decoder 34, DRAM (dynamic random access memory) controller 35 and VD (video demonstration) processor 36, and they all interconnect by bus.
Risc processor 31 is suitable for controlling internal element 32 to 36, and in decode operation, by reading the base program that is stored in the external ROM (read-only memory) 37, carry out decoding of MPEG1 grammer and arithmetic operations such as two-dimensional dct (discrete cosine transform), inverse quantization (inversequantization) and mobile vector.
Main bus I/F32 obtains the coding video frequency data on the CD-Video 11 and the audio data of encoding by bus b1 from CD decoder/servo control circuit 14, carries out various information exchanges by microcomputer 23 and bus b2 to b5.
Dram controller 35 will write outside DRAM38 by coding video frequency data and the coding audio data that bus b1 obtains, and will output to VD processor 36 through the video data of video data decoder 33 decodings.And dram controller 35 reads the coding video frequency data among the DRAM38, and outputs to audio data decoder 34.By the way, DRAM38 also has the hysteresis buffering area (late bufferarea) and the service area of using for risc processor 31 except that buffering area and video data memory block with each image of storage (I image, B image and P image).
Video data ginseng device 33 is decoded each the visual length varying coded data that is written on the DRAM38 by the function in conjunction with risc processor 31, and brightness data that each is visual and color data decoding.
Audio data decoder 34 is by the function in conjunction with risc processor 31, with the coding audio data decoding that is written on the DRAM38.
VD processor 36 is formed data set with decode video data, data set is outputed to bus b1 ', and control signal is outputed to bus b6.VD processor 36 comprises the treatment circuit that fades out/fade in that will describe subsequently.
Video processing circuit 39 receives decode video data by bus b1 ' and D/A converter 40 from VD processor 36, receive control signal by bus b6, rgb signal, luminance signal and chrominance signal are converted to composite signal, and composite signal is sent to NTSC/PAL (NTSC National Television Systems Committee (U.S.)/PAL system) encoder 41.
NTSC/PAL encoder 41 converts composite signal the vision signal of TSC-system formula or pal mode to, and vision signal is outputed to surveillance equipment 2.
On the other hand, in audion system, sound signal treatment circuit 43 receives the audio data of decoding through the audio decoder 34 of CD-Video decoder 24 by D/A converter 42 from bus b7, handles and output to surveillance equipment 2 in a predetermined manner.By the way, bus b8 is used for transmitting the state information of sound signal treatment circuit 43 to audio decoder 34 and CD decoder/servo control circuit 14.
In above-mentioned audio/video regenerative system, present embodiment has following characteristics:
(1) at the data output unit setting of the VD of CD-Video decoder 24 processor 36 treatment circuit that fades out/fade in.
Specifically, the treatment circuit that fades out/fade in comprises: the multiplier 51 that multiply by decode video data with the coefficient (1-km) of may command variation; The data output circuit 52 of output lyrics video datas (lyricsdisplay data); Be used for multiplier 53 that the dateout of variable controlled multiplier km and data output circuit 52 is multiplied each other; And the data combiner 54 of the output of add up each multiplier 51 and 53.The output of data combiner 54 is transported to D/A converter 40 by bus b1 '.
(2) fade out/the light condition of managing everywhere can set by the parameter input mode of setting operation part 19.
(3) treatment conditions of fading out/fade in are stored in the microcomputer circuit 23 by microcomputer circuit 18.Microcomputer circuit 23 is transported to CD-Video decoder 24 according to scheduled timing with treatment conditions, and VD processor 36 is controlled the treatment circuit that fades out/fade in according to described treatment conditions.
Now, will fading out/fade in and handling operation of one of feature as present embodiment be described referring to figs. 2 to flow chart shown in 4.
Fig. 2 is the flow chart that the operation of the treatment conditions of fading out/fade in is set in expression.
When the operation part 19 setup parameter input modes of player 1, microcomputer circuit 18 is informed microcomputer circuit 23 with the parameter input mode, makes the latter enter parameter setting mode (S1).
In this mode, when the treatment conditions of fading out/fade in during from operation part 19 input, initial conditions sends microcomputer circuit 23 to by microcomputer circuit 18, and is stored in the internal storage of microcomputer circuit 23 (S2-S4).
In the present embodiment, the mixing ratio shown in the table 1 and 2: 0-4 and slope: 0-3 is as fading out/light treatment conditions and preparing.
Table 1
The mixing ratio km of each color data of lyrics video data and each frame
Mixing ratio: 0 0/4 0.00
Mixing ratio: 1 1/4 0.25
Mixing ratio: 2 2/4 0.50
Mixing ratio: 3 3/4 0.75
Mixing ratio: 4 4/4 1.00
Table 2
Slope: 0 mixing ratio of fading in/fading into appointment immediately
Slope: 1 mixing ratio of in 15, fading in/fading into appointment
Slope: 2 mixing ratios of in 30, fading in/fading into appointment
Slope: 3 mixing ratios of in 45, fading in/fading into appointment
Be illustrated in " mixing ratio: 0-4 " in the table 1 and be and be illustrated in when lyrics video data mixed with each visual color data of decode video data the index of the maximum mixing ratio of each color data of lyrics video data and each frame; " slope: 0-3 " is the index that is illustrated in corresponding frame number in the time of finishing the processing procedure of fading in/fade out.
For example, by input fade out (mixing ratio: 3,1)/(mixing ratio: 0 of fading in slope:, slope 2), set following condition: " processing controls of fading out is handled beginning so that fade out certainly; with 15 corresponding times in, the mixing ratio of lyrics video data increases to 3/4 gradually by 0; The processing controls of fading in is handled beginning so that fade in certainly, with 30 corresponding times in, the mixing ratio of lyrics data reduces to 0 gradually by 3/4 ".
And, in the present embodiment, in order to simplify input command and order, might be in conjunction with the gradual change processing and the play command of next file, and a control item given process by relevant slope only, for example by the broadcast of fading in (slope: 1, slope: 2).
In this case, set following condition: " processing controls of fading out is fixed as mixing ratio in the maximum mixing ratio of lyrics video data: 4 and the slope: carry out under 1 the time conditions; Fade in processing controls on the slope that begins to play next file: carry out under 2 the time conditions ".
By the way, in the present embodiment, the color of lyrics video data can be specified by operation part 19.When not having color to specify, the lyrics are with black display; When specifying certain color, the lyrics show with the color of appointment.
Fig. 3 and 4 expressions when actual fading out/fade in handled, the operational flowchart of the video of present embodiment/audio frequency regenerative system.
In this case, the treatment conditions of fading out/fade in be preset as the broadcast of fading in (slope: 1, the slope: 2), and supposition is when the file (FP) of the positive displaying video CD11 of player, operation part 19 written instructions way of search specified files (Fs).
At first, when the search key of the specified file (Fs) of operation part 19 is pressed, microcomputer circuit 23 is distributed to CD-Video decoder 24 with the order of above-mentioned " broadcast of fading out (slope: 1, slope: 2) ", CD-Video decoder 24 with demanded storage in the service area of DRAM38 (S11-S13).
24 couples of km of CD-Video decoder (i) (i=1=M/2) and km (j) time period control data (j=1-N/2) carry out arithmetical operation, this time period control data is immediately according to the temporal information of fading out/fading in (M=15 field/N=30 field) of mentioned order appointment, determine the multiplier 51 of VD processor 36 and 53 multiplier (1-km) and km with the maximum mixing ratio of lyrics video data, CD-Video decoder 24 is stored in this control data the work (S14) of DRAM38, here i fades out to handle the number of beginning frame afterwards, and j fades in to handle the number of the frame after beginning.
When control data when the storage of DRAM38 is finished, begin to carry out the processing of fading out of the pictorial data of the file (Fp) in the broadcast, set km (0)=0, as the initial value of km (i), (S16) exports lyrics video data by activation data output circuit 52.
Microcomputer circuit 18 is confirmed the state information (what fade out and handle imposes a condition) of CD-Video decoder 24 by data/address bus b2, b5 and microcomputer circuit 23, and fade out handle beginning after, send to CD decoder/servo control circuit 14 being used for reading formation corresponding to the control data of the GOP of the coding image data of M/2 frame from file (Fp).
File (Fp) from play reads the coding image data on a time period.Each image of mpeg system is written on the respective frame buffer of DRAM38, by Video Decoder 33 decodings, outputs to VD processor 36.Because brightness data that each is visual and color data even in decoding and still separate after constituting corresponding to the decoding image data of 1 frame, so, by the processing of fading out of the treatment circuit that fades out/fade in of controlling VD processor 36 in the following manner:
At first, the decoding brightness data of response input imagery, VD processor 36 will determine the multiplier (1-km) of multiplier 51 and 53 and the value km (i) of km to be made as 0, and former state (the output decoder brightness data of S16 → S17, S22, S23 → S17).
Respond the decoding color data of image then, VD processor 36 is made as km (i) value (S18, S19) of handling the quantity (i) of beginning frame afterwards corresponding to fading out immediately according to the control data that step S14 sets.That is to say, in this case because the operation with setting fade out (mixing ratio: 4, the slope: situation 1) is identical, so km (i) is made as (1/8) i.
Therefore, the multiplier of multiplier 51 (1-km (i)) becomes (8-i)/8, and the multiplier km (i) of multiplier 53 becomes (i/8).So the decoding color data former state of handling beginning start frame (i=0) afterwards of fading out is exported by data combiner 54, the decoding color data of i frame is combined to mixing ratio (i/8) and lyrics video data, and outputs to data combiner 54 (S20).
When the output of color data was finished, the decoding brightness of next image was imported into VD processor 36.Therefore, the value of m (i) temporarily gets back to 0, and m (i) is that 0 o'clock decoding brightness data is by the former state (output of S21, S22-S24 → S17).Then, be imported in the step of VD processor 36 at the decoding color data, set km (i+1) according to control data, lyrics video data ratio with (i+1)/8 in data combiner 54 is synthesized (S18-S21) with the decoding color data.
As a result, the decoding brightness data of each image is exported by former state, and lyrics video data passes through respectively to repeat above-mentioned steps, with 0,1/8,2/8,3/8 ... ratio, synthetic with the decoding color data of handling the frame after the beginning of fading out.That is to say that the image that is presented at the file (Fp) on the surveillance equipment 2 by video processing circuit 39 and NTSC/PAL encoder 41 is desalinated gradually by the color of lyrics video data.
The processing procedure of fading out the quantity (i) of frame become according to impose a condition " slope: 1 " M/2 (this is 8 (〉=15/2) frame down) step in finish.In this step, the broadcast of file (Fp) also finishes (S23 → S25).
In this step, lyrics video data is 1 (=4/4) with the mixing ratio of decoding color data, and the display screen of monitor 2 is desalinated by the color of lyrics video data fully.
Fade out when handling when finishing by above-mentioned steps, microcomputer circuit 23 will send to microcomputer circuit 18 from the state information that CD-Video decoder 24 receives, and indicate it to begin to read file (Fs).Microcomputer circuit 18 is informed CD decoder/servo control circuit 14 with this indication, begins to read file (Fs) (S30) from CD-Video 11.
The coding video frequency data of the file of so reading (Fs) and coding audio data are transferred to CD-Video decoder 24, write DRAM38, are decoded respectively by decoder 33 and 34.When the decoding of first frame (I image) is finished, begin to carry out the processing (S31-S33) of fading in.
In this step, km (o)=0 is set to the initial value of coefficient k m (j), VD processor 36 former states export first frame the decoding brightness data (S33, S34).
Then, when the decoding color data of first frame was read to VD processor 36 by DRAM38, km (0) switched to 1 by the control data that imposes a condition based on fading out.
So, because of multiplier (1-km (0)) and km (0) become 0 and 1 respectively, so, lyrics video data only comprised from the decoding color data of data combiner 54 outputs.Because this state to fade out similarly when finishing dealing with, the screen display of the monitor 2 relevant with that frame keeps the color (S35-S38) of lyrics video data fully.
On the other hand, when the output of the data of first frame was finished, the decode video data that km (0) switches back 0, the second frame immediately was imported into VD processor 36.Second and the processing controls of fading out/fade in of each frame subsequently carry out as follows:
At first, when the output of the data of frame (j-1) was finished, km (j-1) had been switched back 0, then the decoding brightness data of frame (j) be output because it and initial condition (S39-S41 → S34) similar.
Then, when decoding color data when input, immediately according to the control data of setting in the step 14 shown in Figure 3, km (j) is set at the value (S35, S36) of the quantity (j) of handling the frame after the beginning corresponding to fading in.That is to say because this situation be similar to condition enactment for fade in (mixing ratio: 4, the slope: situation 2), so carry out following setting: km (j)=1-(1/15)-j=(15-j)/15.
So, because multiplier of multiplier 51 and 53 (1-km (j)) and km (j) become ((1/15)-j) and (15-j)/15 respectively, the decoding color data of handling beginning initial frame (j=0) afterwards that fades out is exported by data combiner 54 former states, at this moment, the decoding color data of j frame mixes with lyrics video data with ratio (15-j)/15 subsequently, and from data combiner 54 outputs (S36).
By repeating step 34 to 41, the decoding brightness data former state of each frame output, its decoding color data handles frame sequential after the beginning according to fading in, respectively with ratio 14/15,13/15,12/15 ... mix with lyrics video data.Because mixing ratio reduces gradually, so, image on the screen of the monitor 2 that shows by video processing circuit 39 and NTSC/PAL encoder 41 is the color of the lyrics video data of complete monotone, and becomes the reproduced picture of the decoded data of file (Fs) gradually.
Fade in to handle and become N/2 in the quantity (j) of frame according to impose a condition " slope: 2 " (finish in) the step in this case, 15 frames, the output of lyrics video data also finishes (S40 → S42) in this step.
In this step, lyrics video data becomes 0 (=0/4) with the mixing ratio of decoding color data, and the complete reproduced picture of file (Fs) is displayed on the display screen of monitor 2.
Finish to fade out/fade in processing by each step shown in Fig. 3 and 4.Corresponding relation between Fig. 5 express time section treatment step and file (Fp) and the data flow (Fs).
That is to say, as shown in Figure 5, when the search key of start-up operation part 19, under " slope: 1 " condition, carry out the fade out processing relevant with the image of file (Fp).Fade out when finishing dealing with, the broadcast of file (Fp) finishes.Afterwards, the broadcast of file (Fs) begins, and is carrying out processings of fading under " slope: 2 " condition, when the decoding of first frame is finished, and finishes the whole process of the processing of fading out/fade in.
Corresponding relation between the state of the image on Fig. 6 express time section treatment step and the monitor 2.By the way, capitalization A and B represent the image of file (Fp) and decode video data (Fs) respectively among Fig. 6.
As shown in Figure 6, by fading out/fade in processing, visual A is faded out at color by lyrics video data gradually, and screen temporarily becomes the color ((a)-(d)) of lyrics video data fully.Then, visual B fades on the screen of the color of lyrics video data, shows complete visual B ((d)-(g)).So the traditional switched system that switches to visual B with visual A is suddenly compared, can realize very natural switching from visual A to visual B.
On the other hand, the audio data of coding according to the corresponding sequential of decoding of video data of coding, decode in succession by the audio decoder 34 of CD-Video decoder 24.Decoded audio data is transported to sound signal treatment circuit 43 by D/A converter 42, outputs to monitor 2 through the sound signal R (right side) and the L (left side) of conversion by sound signal treatment circuit 43.Therefore, the sound that monitor 2 regeneration is corresponding with reproduced picture, and play according to the time period.
As an example, more than by carry out interdictum duplex fade in broadcast (slope: 1, slope: 2) describe present embodiment.Under the situation of separately setting the condition of fading out and the condition of fading in, km controls according to these conditions.
In the present embodiment, the treatment circuit that fades out/fade in of VD processor 36 has structure shown in Figure 1, and for the brightness data behind the former state output decoder, km is switched at each frame of step S22 shown in Figure 3 and step S39 shown in Figure 4 and gets back to 0.On the other hand, the switching device shifter of multiplier and so on might be set at the input of multiplier 51, so that former state output decoder brightness data, is only imported the decoding color data to the output of data combiner 54 to multiplier 51.In this case, though switching device shifter must be controlled,, according to the condition enactment situation of the processing procedure of fading out/fade in, km can be controlled by incremented/decremented only.
And, in the present embodiment, carry out the processing of fading out according to the selection instruction of next file (Fs) by operation part 19.On the other hand, might insert at the afterbody of the data flow of each file then wait regenerate and the file number of to be shown or the like file.If the order of the regeneration of file and demonstration determines according to described file number, can when being detected, carry out its file number the processing of fading out of certain file.
Though in the present embodiment, the condition enactment handled of fading out/fade in is chosen from pre-conditioned shown in table 1 and 2, might constitute such system, so that these conditions can be by operation part 19 settings.
Now, second embodiment according to picture switching apparatus of the present invention will be described.The same with the situation among first embodiment, can be used for audio/video regenerative system shown in Figure 1 according to the picture switching apparatus of second embodiment.Though in first embodiment, have only fading out or fading in of decoding color data,, in second embodiment, to the processing of all fading out/fade in of decoding brightness data and decoding color data.
Fig. 7 represents the flow chart that fades out and handle according to the picture switching apparatus of second embodiment.In a second embodiment, the treatment circuit that fades out/fade in of VD processor 36 is carried out the processing of fading out with following step.Wherein because from step S11 to S16 and S23 same as shown in Figure 3 to the processing procedure of S25, it describes omission:
At first, the decoded data of the response image of VD processor 36, the control data of setting according to step S14 is set at km (i) the corresponding value (S19) of number (i) of fading out and handling beginning frame afterwards immediately.That is to say, because this situation is similar under the situation of condition enactment for " fade out (mixing ratio: 4, slope: 1) ", so set km (i)=(1/8) i.
Therefore, multiplier 51 and 53 multiplier (1-km (i)) and km (i) become (8-i)/8 and i/8 respectively.So decoding brightness data and the decoding color data of handling beginning initial frame afterwards that fade out all exported from data combiner 54 former states.For frame subsequently, the decoding color data of i frame mixes with lyrics video data with the ratio of i/8, and outputs to data combiner 54 (S50).After the output (S51) of brightness data is finished, the decoding color data that mixes with lyrics video data with the ratio of i/8 from data combiner 54 outputs (S20, S21).
So decoding brightness data and decoding color data are handled the order of beginning frame afterwards by repeating above step according to fading out, respectively with mixing ratio 0,1/8,2/8,3/8 ... synthetic with lyrics display brightness data and color data.That is to say, the screen of the monitor 2 of the image of display file (Fp) is gradually become the monochrome screen with predetermined luminance of being represented by lyrics video data by video processing circuit 39 and NTSC/PAL encoder 41.
Fig. 8 represents the flow chart that fades in and handle according to the picture switching apparatus of second embodiment.In a second embodiment, the treatment circuit that fades out/fade in of VD processor 36 is carried out the processing of fading in according to following controlled step, and wherein, because same as shown in Figure 4 from the processing procedure of step S30 to S32 and step S40 to S42, it describes omission.
When the decoding of first frame (I image) is finished, the initial value of km (j) is set at km (0)=1 (S60).So, because multiplier of multiplier 51 and multiplier 53 (1-km (0)) and km (0) become 0 and 1 respectively, so the decode video data of exporting from data combiner 54 only comprises lyrics video data.
Because this state class is similar to the state that fades out when finishing dealing with, so the color of the display screen of the monitor 2 relevant with that frame and brightness are exactly the color and the brightness of lyrics video data.
For second and subsequently frame, as below will as described in control the treatment circuit that fades out/fade in.At first, when the input decoded data, according to the control data that step S14 shown in Figure 7 sets, the corresponding value (S61) of quantity (j) that km (j) is set at fades in immediately handles the frame after beginning.That is to say because this situation be similar to condition enactment for fade in (mixing ratio: 4, the slope: the situation in the time of 2), so carry out following setting: km (j)=1 (1/15) j=(15-j)/15.
So, because multiplier of multiplier 51 and 53 (1-km (j)) and km (j) become ((1/15/)-j) and (15-j)/15 respectively, decoding brightness data and the decoding color data of handling beginning initial frame (j=0) afterwards that fade out exported from data combiner 54 former states, at this moment decoding brightness data and the decoding color data of classifying the j frame as mix with the brightness data and the color data of lyrics video data with ratio (15-j)/15 respectively, and from data combiner 54 outputs (S62, S63, S37, S38).
By repeating above step, the decoding brightness data of each frame and decoding color data are handled the order of the frame after the beginning according to fading in, respectively with 14/15,13/15,12/15 ... ratio, synthetic with the brightness data of lyrics video data and color data.Because the mixing ratio of lyrics video data reduces gradually, so be presented at by video processing circuit 39 and NTSC/PAL encoder 41 on the screen of monitor 2, have the brightness of lyrics video data and the image of color, gradually become image as the reproduced picture of the decoded data of file (Fs).
Though in the one the second embodiment with the formal description of monochrome image with predetermined brightness and color as the lyrics video data of the video data of gradual change, but, lyrics video data is not limited to such video data, it can be any other video data, as long as predetermined image can show with it.
Claims (3)
1. the picture switching apparatus that is used for graphical presentation system, this graphical presentation system are selected one from the file of many record coding video datas, reading video data from selected file is decoded, regenerated and play back the coding video frequency data of being read; This picture switching apparatus switches to the image of the current file that is showing according to from the selection instruction of operation part or as the image of the selected file of selection instruction of the control data of the data flow that is contained in video data, it is characterized in that comprising:
Produce the data generating apparatus of gradual change video data;
The fade out condition setting apparatus that fades out of maximum mixing ratio of time and gradual change video data and decode video data of setting;
When changing the mixing ratio of gradual change video data and decode video data, decode video data and from the data synthesis device of the gradual change video data of data generating apparatus can add up; And
Response selection instruction and control described data synthesis device so that in the time of fading out that the described condition setting apparatus that fades out is set, increase the control device that fades out of the data mixing ratio of the synthetic device of described data gradually from 0 to maximum mixing ratio.
2. the picture switching apparatus that is used for graphical presentation system, this graphical presentation system are selected one from the file of many record coding video datas, reading video data from selected file is decoded, regenerated and play back the coding video frequency data of being read; This picture switching apparatus switches to the image of the current file that is showing according to from the selection instruction of operation part or as the image of the selected file of selection instruction of the control data of the data flow that is contained in video data, it is characterized in that comprising:
Produce the data generating apparatus of gradual change video data;
The fade in condition setting apparatus that fades in of maximum mixing ratio of time and gradual change video data and decode video data of setting;
When changing the mixing ratio of gradual change video data and decode video data, decode video data and from the data synthesis device of the gradual change video data of described data generating apparatus can add up;
Determine according to the numer of initial frames of the coding video frequency data of selection instruction selected file according to or the checkout gear whether finished of the decoding of field data; And
When described checkout gear detects decoding when finishing, control described data synthesis device so that in the time of fading in that the described condition setting apparatus that fades in is set, from maximum mixing ratio to 0, reduce the control device that fades in of the data mixing ratio of described data synthesis device gradually.
3. the picture switching apparatus that is used for graphical presentation system, this graphical presentation system are selected one from the file of many record coding video datas, reading video data from selected file is decoded, regenerated and play back the coding video frequency data of being read; This picture switching apparatus switches to the image of the current file that is showing according to from the selection instruction of operation part or as the image of the selected file of selection instruction of the control data of the data flow that is contained in video data, it is characterized in that comprising:
Produce the data generating apparatus of gradual change video data;
The fade out condition setting apparatus that fades out of maximum mixing ratio of time and gradual change video data and decode video data of setting;
When changing the mixing ratio of gradual change video data and decode video data, decode video data and from the data synthesis device of the gradual change video data of described data generating apparatus can add up;
Response selection instruction and control described data synthesis device so that in the time of fading out that the described condition setting apparatus that fades out is set, from 0, increase the control device that fades out of the data mixing ratio of the synthetic device of described data gradually to maximum mixing ratio;
The fade in condition setting apparatus that fades in of time of setting;
Decision according to the numer of initial frames of the coding video frequency data of the selected file of selection instruction according to or the checkout gear whether finished of the decoding of field data; And
When described checkout gear detects decoding when finishing, control described data synthesis device so that in the time of fading in that the described condition setting apparatus that fades in is set, reduce the control device that fades in of the data mixing ratio of described data synthesis device from described maximum mixing ratio to 0 of fading out control device control gradually.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13113496 | 1996-04-27 | ||
| JP131134/96 | 1996-04-27 | ||
| US08/845,705 US5990977A (en) | 1996-04-27 | 1997-04-25 | Picture switching apparatus for executing a fade-out/fade-in processing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1166751A true CN1166751A (en) | 1997-12-03 |
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ID=26466062
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN97109745A Pending CN1166751A (en) | 1996-04-27 | 1997-04-25 | Picture switching apparatus |
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| Country | Link |
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| CN (1) | CN1166751A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100403793C (en) * | 2002-12-04 | 2008-07-16 | 汤姆森许可贸易公司 | Encoding of video cross-fades using weighted prediction |
| CN1615615B (en) * | 2002-01-18 | 2010-06-16 | 皇家飞利浦电子股份有限公司 | System for delivering and filtering video content data |
| CN101204093B (en) * | 2005-06-23 | 2010-12-15 | 汤姆森许可贸易公司 | Procedure and device for detecting fades in a sequence of images |
| CN1984261B (en) * | 2005-12-15 | 2011-09-14 | 索尼株式会社 | Imaging switching apparatus and method of controlling image processing unit thereof |
| CN104267945A (en) * | 2014-09-22 | 2015-01-07 | 北京金山安全软件有限公司 | Character display method and device and mobile terminal |
| CN110509769A (en) * | 2019-08-27 | 2019-11-29 | 大陆汽车车身电子系统（芜湖）有限公司 | One kind is fade-in fade-out switching method |
-
1997
- 1997-04-25 CN CN97109745A patent/CN1166751A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1615615B (en) * | 2002-01-18 | 2010-06-16 | 皇家飞利浦电子股份有限公司 | System for delivering and filtering video content data |
| CN100403793C (en) * | 2002-12-04 | 2008-07-16 | 汤姆森许可贸易公司 | Encoding of video cross-fades using weighted prediction |
| CN101204093B (en) * | 2005-06-23 | 2010-12-15 | 汤姆森许可贸易公司 | Procedure and device for detecting fades in a sequence of images |
| CN1984261B (en) * | 2005-12-15 | 2011-09-14 | 索尼株式会社 | Imaging switching apparatus and method of controlling image processing unit thereof |
| CN104267945A (en) * | 2014-09-22 | 2015-01-07 | 北京金山安全软件有限公司 | Character display method and device and mobile terminal |
| CN110509769A (en) * | 2019-08-27 | 2019-11-29 | 大陆汽车车身电子系统（芜湖）有限公司 | One kind is fade-in fade-out switching method |
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