US20030159152A1 - Fast motion trick mode using dummy bidirectional predictive pictures - Google Patents

Fast motion trick mode using dummy bidirectional predictive pictures Download PDF

Info

Publication number
US20030159152A1
US20030159152A1 US10/121,157 US12115702A US2003159152A1 US 20030159152 A1 US20030159152 A1 US 20030159152A1 US 12115702 A US12115702 A US 12115702A US 2003159152 A1 US2003159152 A1 US 2003159152A1
Authority
US
United States
Prior art keywords
video signal
trick mode
picture
pictures
original pictures
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US10/121,157
Other languages
English (en)
Inventor
Shu Lin
Donald Willis
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Thomson Licensing SAS
Original Assignee
Thomson Licensing SAS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Thomson Licensing SAS filed Critical Thomson Licensing SAS
Priority to US10/121,157 priority Critical patent/US20030159152A1/en
Assigned to THOMSON LICENSING S.A. reassignment THOMSON LICENSING S.A. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: LIN, SHU, WILLIS, DONALD HENRY
Publication of US20030159152A1 publication Critical patent/US20030159152A1/en
Abandoned legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/76—Television signal recording
    • H04N5/78—Television signal recording using magnetic recording
    • H04N5/782—Television signal recording using magnetic recording on tape
    • H04N5/783—Adaptations for reproducing at a rate different from the recording rate
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T9/00—Image coding
    • G06T9/004—Predictors, e.g. intraframe, interframe coding
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/432—Content retrieval operation from a local storage medium, e.g. hard-disk
    • H04N21/4325—Content retrieval operation from a local storage medium, e.g. hard-disk by playing back content from the storage medium
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/44—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs
    • H04N21/4402—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs involving reformatting operations of video signals for household redistribution, storage or real-time display
    • H04N21/440281—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs involving reformatting operations of video signals for household redistribution, storage or real-time display by altering the temporal resolution, e.g. by frame skipping
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/76—Television signal recording
    • H04N5/78—Television signal recording using magnetic recording
    • H04N5/782—Television signal recording using magnetic recording on tape
    • H04N5/7824—Television signal recording using magnetic recording on tape with rotating magnetic heads
    • H04N5/7828—Television signal recording using magnetic recording on tape with rotating magnetic heads involving transversal scanning of the magnetic tape
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/79—Processing of colour television signals in connection with recording
    • H04N9/80—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback
    • H04N9/804—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback involving pulse code modulation of the colour picture signal components
    • H04N9/8042—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback involving pulse code modulation of the colour picture signal components involving data reduction
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/76—Television signal recording
    • H04N5/765—Interface circuits between an apparatus for recording and another apparatus
    • H04N5/775—Interface circuits between an apparatus for recording and another apparatus between a recording apparatus and a television receiver
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/76—Television signal recording
    • H04N5/84—Television signal recording using optical recording
    • H04N5/85—Television signal recording using optical recording on discs or drums

Definitions

  • the inventive arrangements relate generally to video systems and more particularly to video systems that record or play back digitally encoded video sequences.
  • a trick mode can be any playback of video in which the playback is not done at normal speed or in a forward direction.
  • a trick mode involves skipping a number of pictures in a video signal such as during a fast motion trick mode. Skipping pictures in a video signal being transmitted to a remote decoder can actually increase the average bit rate of the signal. As the bandwidth between the digital video recorder or player and the DTV is limited, performing a fast motion trick mode may cause the signal to exceed the maximum bit rate limit of the transmission channel.
  • I and P pictures contain relatively large amounts of encoded data, at least with respect to B pictures.
  • the first pictures in a group of pictures (GOP) to be skipped are typically the B pictures.
  • the average amount of encoded data for the remaining pictures, or the average number of bits per picture, in the GOP increases.
  • Such a drawback can lead to buffer overflow and the loss of pictures during the display of the trick mode video signal.
  • the present invention concerns a method of performing a trick mode on a video signal containing a plurality of progressively scanned original pictures.
  • the method includes the steps of selectively skipping at least one of the original pictures to convert the video signal to a trick mode video signal in response to a trick mode command and selectively inserting at least one dummy bidirectional predictive picture in the trick mode video signal.
  • the method can also include the steps of monitoring the trick mode video signal and selectively inserting at least one dummy bidirectional predictive picture in the trick mode video signal if the bit rate of the trick mode video signal exceeds a predetermined threshold.
  • each of the plurality of original pictures can contain a display indicator
  • the method can further include the step of selectively modifying the display indicator of at least a portion of the plurality of original pictures to reflect an intended display order when an original picture is skipped or when a dummy bidirectional predictive picture is inserted in the trick mode video signal.
  • the display indicator can be a temporal reference field.
  • each temporal reference field can have an integer value
  • the step of selectively modifying the temporal reference field of at least a portion of the plurality of original pictures can include the step of incrementally decreasing by one the integer value of the temporal reference field of the subsequent original pictures each time an original picture is skipped.
  • the selectively modifying step can include the step of incrementally increasing by one the integer value of the temporal reference field of the subsequent original pictures each time a dummy bidirectional predictive picture is inserted in the trick mode video signal.
  • the dummy bidirectional predictive picture can be predicted from a reference picture.
  • each dummy bidirectional predictive picture can be a one-directional predictive picture.
  • the reference picture can be an intra picture or a predictive picture.
  • at least a portion of the trick mode video signal can be decoded by a remote decoder, and the trick mode can be a fast motion trick mode.
  • the method can further include the step of, following the insertion of at least one dummy bidirectional predictive picture, skipping at least one remaining original picture if the insertion of dummy bidirectional predictive pictures in the trick mode video signal causes a playback speed of the trick mode video signal to decrease to an unacceptable level.
  • the invention also concerns a method of performing a trick mode on a video signal containing a plurality of progressively scanned original pictures in which each of the plurality of progressively scanned original pictures contains a display indicator.
  • This method includes the steps of selectively skipping at least one of the original pictures to convert the video signal to a trick mode video signal in response to a trick mode command and selectively modifying the display indicator of at least a portion of the plurality of original pictures each time an original picture is skipped.
  • at least a portion of the trick mode video signal in this embodiment can be decoded by a remote decoder.
  • the present invention also concerns a system for performing a trick mode on a video signal containing a plurality of progressively scanned original pictures.
  • the system includes a controller for reading data from a storage medium and outputting the video signal containing the plurality of original pictures and a video processor in which the processor is programmed to selectively skip at least one of the original pictures to convert the video signal to a trick mode video signal in response to a trick mode command and selectively insert at least one dummy bidirectional predictive picture in the trick mode video signal.
  • the system also includes suitable software and circuitry to implement the methods as described above.
  • FIG. 1 is a block diagram of a system that can perform a fast motion trick mode using dummy bidirectional predictive pictures in accordance with the inventive arrangements herein.
  • FIG. 2 is a flow chart that illustrates an operation of performing a fast motion trick mode using dummy bidirectional predictive pictures in accordance with the inventive arrangements.
  • FIG. 3 is a flow chart that illustrates an alternative operation of performing a fast motion trick mode using dummy bidirectional predictive pictures in accordance with the inventive arrangements.
  • FIG. 4 illustrates a typical group of pictures structure in an MPEG video signal.
  • FIG. 1 A system 100 for implementing the various advanced operating features in accordance with the inventive arrangements is shown in block diagram form in FIG. 1.
  • the invention is not limited to the particular system illustrated in FIG. 1, as the invention can be practiced with any other system capable of receiving a digitally encoded signal and transferring that signal to a display device.
  • the system 100 is not limited to reading data from or writing data to any particular type of storage medium, as any storage medium capable of storing digitally encoded data can be used with the system 100 .
  • the searching engine 114 and the microprocessor 116 can be a video processor 120 within contemplation of the present invention.
  • all or portions of the controller 110 , the searching engine 114 , the microprocessor 116 and the transmission buffer 117 can be a bitstream source 122 within contemplation of the present invention.
  • the display device 118 can contain its own decoder (not pictured) for decoding all or a portion of any video signal read from the storage medium 112 and processed by the bitstream source 122 .
  • the decoder (not shown) in the bitstream source 122 typically does not decode the video signal read from the storage medium 112 .
  • This particular embodiment can be referred to as a remote decoder arrangement. It should be noted, however, that the invention is not limited to this arrangement, as the invention can be practiced in other suitable systems.
  • the controller 110 can read a video signal containing a plurality of progressively scanned original pictures from the storage medium 112 .
  • the phrase “progressively scanned original pictures” will be shortened to “original pictures” throughout the application.
  • the microprocessor 116 can signal the searching engine 114 to locate one or more suitable original pictures in the trick mode video signal for purposes of skipping such a picture. Once located, the microprocessor can selectively skip at least one of the original pictures to convert the video signal to a trick mode video signal. The skipped pictures will not be decoded nor will they be displayed during the trick mode.
  • the microprocessor 116 can then selectively insert at least one of the corresponding dummy B pictures such that the dummy B picture is sent to the transmission buffer 117 and on to the display device 118 .
  • the dummy B pictures can be used to repeat original pictures such that the dummy B picture is transmitted to the display device 118 and displayed.
  • the microprocessor 116 can monitor the bit rate of the trick mode video signal. If the bit rate of the trick mode video signal exceeds a predetermined threshold, then the microprocessor 116 , in conjunction with the searching engine 114 , can perform the selectively inserting step discussed above in which at least one dummy B picture can be inserted in the trick mode video signal.
  • the microprocessor 116 can modify certain portions of information contained within one or more of the plurality of original pictures contained in the trick mode video signal to reflect an intended display order. This modification step can be performed whether original pictures are skipped or dummy B pictures are inserted in the video signal. The overall operation of the invention will be discussed in greater detail below.
  • FIG. 2 is a flowchart illustrating a method 200 that demonstrates one way to operate in a trick mode such as a fast motion trick mode using dummy B pictures.
  • the invention can be practiced in a remote decoder arrangement.
  • a remote decoder arrangement can be any system in which at least a portion of the pictures in a video signal can be decoded by a decoder that is external to and not under the control of a bitstream source that is providing the pictures to the decoder.
  • the bitstream source can be an optical storage medium player or recorder that reads multimedia data from an optical storage medium and transfers this data over a transmission channel to a digital television, which contains its own decoder. It is understood, however, that the invention is not limited to this example or even a remote decoder arrangement, as the invention can be practiced in any other suitable system or arrangement.
  • a video signal containing a plurality of progressively scanned original pictures can be read.
  • a trick mode command can be received.
  • the trick mode command can be any command in which one or more of the original pictures are to be skipped, including a fast motion command such as fast forward or fast reverse.
  • a fast motion command such as fast forward or fast reverse.
  • at least one of the original pictures can be selectively skipped. This selective skipping of pictures converts the video signal to a trick mode video signal.
  • the first original pictures to be skipped can be B pictures.
  • a typical group of pictures (GOP) 400 in display order is shown.
  • the subscript numbers indicate when each picture will be displayed—relative to the other pictures in the GOP—at a normal playback speed.
  • This GOP 400 can be one of many GOPs in a video signal.
  • the GOP 400 will serve to illustrate how a fast motion trick mode can be performed. For example, if a fast forward playback of 3 ⁇ is desired (1 ⁇ represents normal playback), then all the B pictures in the GOP 400 can be skipped. Thus, for this particular GOP, only the picture I 2 and the P pictures will be transmitted and/or decoded and displayed.
  • skipping pictures in a GOP can cause the average bit rate of the trick mode video signal to increase. In fact, such an increase may exceed tolerable limits in the transmission channel carrying the trick mode video signal.
  • decision block 216 it can be determined whether at least one dummy B picture is to be inserted in the trick mode video signal, as shown at decision block 216 . If not, the flowchart 200 can continue at step 224 , which will be explained below. If yes, then at step 218 , at least one dummy B picture can be so inserted. Inserting dummy B pictures into the trick mode video signal can help lower the bit rate of such a signal.
  • a dummy B picture is a B picture that can be predicted from certain pictures and whose motion vectors and discrete cosine transform (DCT) coefficients are set to zero or not encoded. As such, a dummy B picture contains very little information.
  • a dummy B picture's primary purpose is to duplicate or repeat the picture from which it was predicted using very few bits. Thus, as dummy B pictures are placed into a fast motion trick mode video signal, the average number of bits per picture in the GOP decreases thereby lowering the average bit rate.
  • a picture from which a dummy B picture is predicted is commonly referred to as a reference picture, and any number of the original pictures can be reference pictures.
  • the reference picture can be either an I picture or a P picture.
  • attention is once again directed to the GOP 400 in FIG. 4. If all the B pictures are skipped and pictures P 14 and P 11 are skipped (a playback speed of 5 ⁇ ), then any number of dummy B pictures can be inserted into the trick mode video signal to help lower the bit rate.
  • These dummy B pictures can be predicted from either picture I 2 , P 5 or P 8 .
  • the addition of dummy B pictures into the trick mode video signal will decrease the playback speed of the trick mode.
  • decision block 220 it can be determined whether the insertion of the dummy B pictures has slowed the fast motion playback to an unacceptable level. Referring to the above example of a playback speed of 5 ⁇ , if two dummy B pictures are inserted into the trick mode video signal, then the playback speed will drop to 3 ⁇ . If the decrease in playback speed is tolerable, then the process can continue to step 224 . If this slowdown is unacceptable, then at step 222 , one or more of the remaining original pictures can be skipped.
  • an unacceptable slowdown can be a decrease in playback speed of roughly thirty percent from the intended trick mode playback speed.
  • the invention is by no means limited to this particular factor, as other variations in the playback speed can be considered unacceptable.
  • pictures P 5 and P 8 can be skipped thereby increasing the playback speed back to 5 ⁇ .
  • the insertion of dummy B pictures can also reduce the choppiness of the display of the trick mode video signal, which can be particularly troublesome at a very fast motion trick mode. For example, referring back to GOP 400 in FIG. 4, if a 15 ⁇ playback is to be performed (either in a forward or a reverse direction), then only picture I 2 will be decoded and displayed. This algorithm also applies to any other GOPs in the trick mode video signal. Thus, only the I pictures in subsequent GOPs for a fast forward trick mode and preceding GOPs for a fast reverse trick mode will be decoded and displayed. Such a display, however, can be very choppy and may cause an uncomfortable viewing experience, as jumping from I picture to I picture at a high rate may be difficult to follow because of scene changes or sudden appearances and disappearances of moving objects in the display.
  • inserting one or more dummy B pictures into the trick mode video signal either before or after each I picture can enhance the display of the trick mode.
  • a number of dummy B pictures predicted from I 2 can be inserted into the trick mode video signal. Because they are repeats of picture I 2 , the dummy B pictures increase the amount of time the information in picture I 2 is displayed thereby reducing the choppiness of the display.
  • This insertion step can also lower the average bit rate of the trick mode video signal, as, in this example, the signal will have a relatively high bit rate because only I pictures are being transmitted.
  • the dummy B pictures that are inserted in the trick mode video signal can be one-directional prediction pictures.
  • a one-directional prediction picture is predicted from merely one picture, whereas a B picture is generally predicted from two separate pictures.
  • the one-directional dummy B pictures can either be forward predicted dummy B pictures or backward predicted dummy B pictures. If the dummy B picture is a forward predicted dummy B picture, then the dummy B picture can be predicted from a reference picture that is before (in display order) the dummy B picture. In contrast, if the dummy B picture is a backward predicted dummy B picture, then the dummy B picture can be predicted from a reference picture that follows (in display order) the dummy B picture. Because they are predicted merely from one picture, one-directional prediction dummy B pictures can be suitable for repeating or duplicating pictures.
  • dummy B pictures can be inserted in almost any location in a trick mode video signal and at any suitable fast motion trick mode speed. Accordingly, the invention is in no way limited to the foregoing examples, as those skilled in the art will appreciate that there are numerous insertion sequences that can be used to lower the bit rate of a trick mode video signal or to reduce the choppiness of such a signal.
  • each of the plurality of original pictures can contain a display indicator. Referring back to flowchart 200 in FIG. 2, as determined at decision block 224 , if the display indicators of these pictures are to be selectively modified, then the display indicator of at least a portion of the plurality of original pictures can be selectively modified, as shown at step 226 .
  • modifying these display indicators can reflect an intended display order of the plurality of original pictures when an original picture is skipped or when a dummy B picture is inserted in the trick mode video signal. It is understood, however, that this process can be performed irrespective of whether dummy B pictures are being inserted into the trick mode video signal.
  • the step of modifying a display indicator can be performed during a conventional fast motion trick mode in which pictures are merely skipped and no dummy B pictures are inserted into the trick mode video signal. If the display indicators are not to be modified, then the flowchart 200 can continue at step 228 .
  • the display indicator can be a temporal reference field.
  • a temporal reference field is typically a ten bit field located in the picture header of digitally encoded pictures. Some decoders rely on the temporal reference field to determine when a particular picture in a video signal will be displayed relative to other pictures in the video signal. This field normally has an integer value.
  • GOP 400 contains fifteen pictures.
  • the subscript numbers for the pictures in the GOP 400 can correspond to the integer values for each respective picture's temporal reference field.
  • the temporal reference field of picture B 0 the first picture in the GOP
  • the temporal reference field of picture B 1 the next picture to be displayed
  • the integer value of the temporal reference field for each subsequent picture to be displayed can be increased by one, all the way to picture P 14 , whose temporal reference field can have an integer value of 14.
  • the phrase “integer value of the temporal reference field” can also be referred to as “integer value.”
  • the integer value of the temporal reference fields of the original pictures that follow the inserted dummy B pictures or skipped original pictures can be modified to indicate a proper display order. For example, if pictures B 9 and B 10 are skipped, then the integer values of those original pictures that follow can be decreased by a value of two. So, the integer value of the temporal reference field of picture P 11 can be modified from eleven to nine, the integer value of the temporal reference field of picture B 12 can be modified from twelve to ten and so on.
  • This modification process can continue until the end of the GOP 400 is reached and can ensure that the remaining pictures in the GOP 400 will be displayed in a proper order.
  • the integer values of the temporal reference fields of the remaining pictures in that GOP can be decreased by a value of one.
  • the integer value of the temporal reference fields of the original pictures that follow can be increased by an appropriate value to reflect an intended display order.
  • the integer value of the temporal reference field for picture I 2 can be modified from two to zero
  • the integer value for P 5 can be modified from five to one
  • the integer value for P 8 can be modified from eight to three.
  • the integer values for the remaining P pictures would be as follows: the integer value for P 5 can be modified from one back to five (the integer value prior to the initiation of the trick mode) and the integer value for P 8 can be modified from two to seven.
  • the integer value of the temporal reference fields of the following remaining original pictures can be increased by an integer value of one.
  • the step of modifying the integer values of the temporal reference fields of the non-skipped pictures in other GOPs in the trick mode video signal can be carried out in accordance with these examples. It must be noted, however, that the invention is not limited to these particular examples, as other ways to modify the integer values of the relevant temporal reference fields to reflect an intended display order can be performed in any other suitable fashion. Moreover, it should be noted that the invention is not limited to the use of a temporal reference field, as any other suitable display indicator can be modified to reflect an intended display order in either of the embodiments discussed above. Referring back to the method 200 in FIG. 2, once the display indicator has been selectively modified, the process can continue at decision block 228 . If the trick mode is to continue, then the trick mode can continue at step 214 . If not, normal playback can resume at step 230 .
  • a flowchart represents an alternative method 300 to the trick mode discussed with respect to the method 200 .
  • steps 310 - 314 are identical to steps 210 - 214 in the method 200 and, accordingly, warrant no discussion here.
  • the bit rate of the trick mode video signal can be monitored. Monitoring the bit rate of the trick mode video signal may be necessary during a fast motion trick mode because, as mentioned earlier, skipping pictures may result in an increased average bit rate. In certain cases, this increased bit rate may exceed the maximum allowable bit rate for the transmission channel that is carrying the video signal. For purposes of the invention, this maximum allowable bit rate for the transmission channel can be referred to as a predetermined threshold.
  • bit rate of the trick mode video signal has exceeded this predetermined threshold. If the bit rate has not reached the predetermined threshold, then the flowchart 300 can continue at decision block 326 . Referring back to step 318 , if the bit rate has exceeded the predetermined threshold, then dummy B pictures can be inserted in the trick mode video signal, as shown at step 320 . Also, if desired, following the insertion of the dummy B pictures, one or more of the remaining original pictures can be skipped to increase the playback speed, as shown at steps 322 and 324 . In addition, the display indicators of at least a portion of the original pictures can be modified, as shown at steps 326 and 328 .
  • steps 320 , 322 , 324 , 326 and 328 are similar to the corresponding procedures illustrated in the method 200 of FIG. 2.
  • the insertion of dummy B pictures can occur based on the monitoring of the bit rate of the trick mode video signal and can be performed if this bit rate exceeds a predetermined threshold.
  • decision block 330 it can be determined whether the trick mode is to continue. If yes, then the method 300 can resume at step 314 . If not, normal playback can resume at step 322 .

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Databases & Information Systems (AREA)
  • Television Signal Processing For Recording (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
US10/121,157 2001-10-23 2002-04-11 Fast motion trick mode using dummy bidirectional predictive pictures Abandoned US20030159152A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US10/121,157 US20030159152A1 (en) 2001-10-23 2002-04-11 Fast motion trick mode using dummy bidirectional predictive pictures

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US33491401P 2001-10-23 2001-10-23
US10/121,157 US20030159152A1 (en) 2001-10-23 2002-04-11 Fast motion trick mode using dummy bidirectional predictive pictures

Publications (1)

Publication Number Publication Date
US20030159152A1 true US20030159152A1 (en) 2003-08-21

Family

ID=23309417

Family Applications (2)

Application Number Title Priority Date Filing Date
US10/121,157 Abandoned US20030159152A1 (en) 2001-10-23 2002-04-11 Fast motion trick mode using dummy bidirectional predictive pictures
US10/493,281 Expired - Fee Related US7505517B2 (en) 2001-10-23 2002-10-22 Generating a dummy bidirectional predictive field picture

Family Applications After (1)

Application Number Title Priority Date Filing Date
US10/493,281 Expired - Fee Related US7505517B2 (en) 2001-10-23 2002-10-22 Generating a dummy bidirectional predictive field picture

Country Status (9)

Country Link
US (2) US20030159152A1 (zh)
EP (5) EP1438850A4 (zh)
JP (5) JP2005527131A (zh)
KR (5) KR100961784B1 (zh)
CN (7) CN101222643A (zh)
AU (1) AU2002348005A1 (zh)
MX (5) MXPA04003577A (zh)
MY (5) MY136898A (zh)
WO (5) WO2003036956A1 (zh)

Cited By (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030077070A1 (en) * 2001-10-23 2003-04-24 Shu Lin Fast motion trick mode using dummy predictive pictures
US20040102379A1 (en) * 1996-08-30 2004-05-27 The Johns Hopkins University School Of Medicine Fibroblast growth factor homologous factors (FHFs) and methods of use
US20060013554A1 (en) * 2004-07-01 2006-01-19 Thomas Poslinski Commercial storage and retrieval
US20060013557A1 (en) * 2004-07-01 2006-01-19 Thomas Poslinski Suppression of trick modes in commercial playback
US20060013556A1 (en) * 2004-07-01 2006-01-19 Thomas Poslinski Commercial information and guide
US20060013555A1 (en) * 2004-07-01 2006-01-19 Thomas Poslinski Commercial progress bar
US20060192698A1 (en) * 2002-12-30 2006-08-31 Anthony Morel Encoding dynamic graphic content views
US20070127881A1 (en) * 2005-12-07 2007-06-07 Sony Corporation System and method for smooth fast playback of video
US20070204288A1 (en) * 2006-02-28 2007-08-30 Sony Electronics Inc. Parental control of displayed content using closed captioning
US20080131078A1 (en) * 2006-12-04 2008-06-05 Electronics And Telecommunications Research Institute Method for generating double-speed idr-unit for trick play, and trick play system and method using the same
US20090320077A1 (en) * 2005-10-24 2009-12-24 Gazdzinski Robert F Method and apparatus for on-demand content transmission and control over networks
US20100061709A1 (en) * 2008-09-05 2010-03-11 Davender Agnihotri Ad Menu for skipped advertisements
US7711115B2 (en) 2002-11-05 2010-05-04 Sony Corporation Descrambler
US7730300B2 (en) 1999-03-30 2010-06-01 Sony Corporation Method and apparatus for protecting the transfer of data
US7747853B2 (en) 2001-06-06 2010-06-29 Sony Corporation IP delivery of secure digital content
US7751560B2 (en) 2001-06-06 2010-07-06 Sony Corporation Time division partial encryption
US7765567B2 (en) 2002-01-02 2010-07-27 Sony Corporation Content replacement by PID mapping
US7823174B2 (en) 2002-01-02 2010-10-26 Sony Corporation Macro-block based content replacement by PID mapping
US7853980B2 (en) 2003-10-31 2010-12-14 Sony Corporation Bi-directional indices for trick mode video-on-demand
US7895617B2 (en) 2004-12-15 2011-02-22 Sony Corporation Content substitution editor
US7895616B2 (en) 2001-06-06 2011-02-22 Sony Corporation Reconstitution of program streams split across multiple packet identifiers
US7925016B2 (en) 1999-03-30 2011-04-12 Sony Corporation Method and apparatus for descrambling content
US8041190B2 (en) 2004-12-15 2011-10-18 Sony Corporation System and method for the creation, synchronization and delivery of alternate content
US8488788B2 (en) 1999-11-09 2013-07-16 Sony Corporation Method for simulcrypting scrambled data to a plurality of conditional access devices
US8572408B2 (en) 2002-11-05 2013-10-29 Sony Corporation Digital rights management of a digital device
US8645988B2 (en) 2002-12-13 2014-02-04 Sony Corporation Content personalization for digital content
US8667525B2 (en) 2002-12-13 2014-03-04 Sony Corporation Targeted advertisement selection from a digital stream
US8818896B2 (en) 2002-09-09 2014-08-26 Sony Corporation Selective encryption with coverage encryption
US20210201639A1 (en) * 2019-12-30 2021-07-01 Axis Ab Real-time deviation in video monitoring

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7787746B2 (en) * 2001-10-23 2010-08-31 Thomson Licensing Fast motion trick mode using non-progressive dummy bidirectional predictive pictures
US6990147B2 (en) * 2001-10-23 2006-01-24 Thomson Licensing Generating a non-progressive dummy bidirectional predictive picture
US7149410B2 (en) * 2001-10-23 2006-12-12 Thomson Licensing Trick modes using non-progressive dummy bidirectional predictive pictures
US6990287B2 (en) * 2001-10-23 2006-01-24 Thomson Licensing Fast motion trick mode using dummy bidirectional predictive pictures
US7174086B2 (en) * 2001-10-23 2007-02-06 Thomson Licensing Trick mode using dummy predictive pictures
US8705947B2 (en) 2001-10-23 2014-04-22 Thomson Licensing Trick mode on bidirectional predictive frames
US20030159152A1 (en) * 2001-10-23 2003-08-21 Shu Lin Fast motion trick mode using dummy bidirectional predictive pictures
US8315307B2 (en) * 2004-04-07 2012-11-20 Qualcomm Incorporated Method and apparatus for frame prediction in hybrid video compression to enable temporal scalability
US7729590B2 (en) * 2004-08-03 2010-06-01 Sony Corporation Digital video stream trick play
KR100813063B1 (ko) * 2006-05-11 2008-03-14 엘지전자 주식회사 고속 포워딩 및 리와인딩 디스플레이 기능을 갖는 영상장치 및 그 방법
WO2008102794A1 (ja) * 2007-02-21 2008-08-28 Nec Corporation 動画像ストリーム加工装置及び該装置を備えた動画像再生装置並びに方法とプログラム
US8189676B2 (en) * 2007-04-05 2012-05-29 Hong Kong University Of Science & Technology Advance macro-block entropy coding for advanced video standards
US20120057629A1 (en) 2010-09-02 2012-03-08 Fang Shi Rho-domain Metrics
CN102447902B (zh) * 2011-09-30 2014-04-16 广州柯维新数码科技有限公司 选择参考场及获取时域运动矢量的方法
GB2540320B (en) * 2014-05-08 2018-11-07 Mitsubishi Electric Corp Image decoding apparatus

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6865747B1 (en) * 1999-04-01 2005-03-08 Digital Video Express, L.P. High definition media storage structure and playback mechanism

Family Cites Families (41)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2288520B (en) 1994-03-24 1998-10-14 Discovision Ass Pipeline
US5461420A (en) * 1992-09-18 1995-10-24 Sony Corporation Apparatus for coding and decoding a digital video signal derived from a motion picture film source
US5377051A (en) 1993-01-13 1994-12-27 Hitachi America, Ltd. Digital video recorder compatible receiver with trick play image enhancement
US5805762A (en) * 1993-01-13 1998-09-08 Hitachi America, Ltd. Video recording device compatible transmitter
US5535008A (en) * 1993-03-16 1996-07-09 Victor Company Of Japan, Ltd. Method for jump-reproducing video data of moving picture coded with high efficiency
DE69422960T2 (de) * 1993-12-01 2000-06-15 Matsushita Electric Ind Co Ltd Verfahren und Vorrichtung zum Editieren oder zur Mischung von komprimierten Bildern
JP3097437B2 (ja) * 1994-03-14 2000-10-10 松下電器産業株式会社 圧縮動画像の記録方法と再生装置
US5768539A (en) * 1994-05-27 1998-06-16 Bell Atlantic Network Services, Inc. Downloading applications software through a broadcast channel
US5592299A (en) * 1994-09-26 1997-01-07 Hitachi America, Ltd. Method and apparatus for reducing the amount of data required to represent a video frame
GB9421206D0 (en) * 1994-10-20 1994-12-07 Thomson Consumer Electronics Digital VCR MPEG- trick play processing
JP3491366B2 (ja) * 1995-01-31 2004-01-26 ソニー株式会社 符号化データの特殊再生方法および特殊再生装置
EP0817480B1 (en) * 1995-03-20 1999-08-04 Matsushita Electric Industrial Co., Ltd. Device and method for recording picture information
US5694170A (en) * 1995-04-06 1997-12-02 International Business Machines Corporation Video compression using multiple computing agents
US5793927A (en) * 1995-06-07 1998-08-11 Hitachi America, Ltd. Methods for monitoring and modifying a trick play data stream to insure MPEG compliance
US5978542A (en) * 1995-06-07 1999-11-02 Industrial Technology Research Institute VTR tape format for compressed digital video using overlapped areas for forward and reverse high speed playback
JP3319678B2 (ja) * 1995-08-11 2002-09-03 ケイディーディーアイ株式会社 動画像の高速ブラウジング装置
JPH09107547A (ja) * 1995-10-09 1997-04-22 Hitachi Ltd 既圧縮動画データ量削減装置および既圧縮動画データ量削減システムならびに既圧縮動画データ量削減方法
US5956088A (en) * 1995-11-21 1999-09-21 Imedia Corporation Method and apparatus for modifying encoded digital video for improved channel utilization
US5739862A (en) * 1996-12-23 1998-04-14 Tektronix, Inc. Reverse playback of MPEG video
JP4069474B2 (ja) * 1997-01-21 2008-04-02 ヤマハ株式会社 画像記録再生装置
US6222532B1 (en) * 1997-02-03 2001-04-24 U.S. Philips Corporation Method and device for navigating through video matter by means of displaying a plurality of key-frames in parallel
US6201927B1 (en) * 1997-02-18 2001-03-13 Mary Lafuze Comer Trick play reproduction of MPEG encoded signals
US6118491A (en) * 1997-02-20 2000-09-12 Lsi Logic Corporation System and method for enforcing interlaced field synchronization in the presence of broken alternation in an MPEG video datastream
JP3996204B2 (ja) * 1997-04-24 2007-10-24 コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ ビデオ画像を記録し及び再生する方法及び装置
US6219381B1 (en) * 1997-05-26 2001-04-17 Kabushiki Kaisha Toshiba Image processing apparatus and method for realizing trick play
US5987179A (en) * 1997-09-05 1999-11-16 Eastman Kodak Company Method and apparatus for encoding high-fidelity still images in MPEG bitstreams
JP3197855B2 (ja) * 1997-11-06 2001-08-13 三洋電機株式会社 Ｍｐｅｇデータの再生装置
JPH11220694A (ja) * 1998-02-02 1999-08-10 Sony Corp 信号伝送方法、信号伝送装置及び信号記録媒体
JPH11244929A (ja) * 1998-03-03 1999-09-14 Nippon Steel Corp 鋼板の冷間圧延方法
KR20010022752A (ko) * 1998-06-11 2001-03-26 요트.게.아. 롤페즈 디지털 비디오 레코더용 트릭 플레이 신호 발생
FR2782437B1 (fr) * 1998-08-14 2000-10-13 Thomson Multimedia Sa Procede de commutation de flux mpeg
AU5823099A (en) * 1998-10-26 2000-05-15 Sony Electronics Inc. Management of trick playback of digital video data
JP2000236547A (ja) * 1998-12-15 2000-08-29 Sony Corp 画像情報変換装置及び画像情報変換方法
JP3789048B2 (ja) * 1999-02-22 2006-06-21 株式会社東芝 動画像再符号化装置
JP2001028748A (ja) * 1999-07-12 2001-01-30 Sony Corp データ再生伝送装置及びデータ再生伝送方法
US6678332B1 (en) * 2000-01-04 2004-01-13 Emc Corporation Seamless splicing of encoded MPEG video and audio
CN100551009C (zh) * 2001-04-24 2009-10-14 皇家菲利浦电子有限公司 用于产生视频信号的方法和设备
US20030159152A1 (en) * 2001-10-23 2003-08-21 Shu Lin Fast motion trick mode using dummy bidirectional predictive pictures
US6990147B2 (en) * 2001-10-23 2006-01-24 Thomson Licensing Generating a non-progressive dummy bidirectional predictive picture
US7787746B2 (en) * 2001-10-23 2010-08-31 Thomson Licensing Fast motion trick mode using non-progressive dummy bidirectional predictive pictures
US7149410B2 (en) * 2001-10-23 2006-12-12 Thomson Licensing Trick modes using non-progressive dummy bidirectional predictive pictures

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6865747B1 (en) * 1999-04-01 2005-03-08 Digital Video Express, L.P. High definition media storage structure and playback mechanism

Cited By (35)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040102379A1 (en) * 1996-08-30 2004-05-27 The Johns Hopkins University School Of Medicine Fibroblast growth factor homologous factors (FHFs) and methods of use
US7925016B2 (en) 1999-03-30 2011-04-12 Sony Corporation Method and apparatus for descrambling content
US7730300B2 (en) 1999-03-30 2010-06-01 Sony Corporation Method and apparatus for protecting the transfer of data
US8488788B2 (en) 1999-11-09 2013-07-16 Sony Corporation Method for simulcrypting scrambled data to a plurality of conditional access devices
US7747853B2 (en) 2001-06-06 2010-06-29 Sony Corporation IP delivery of secure digital content
US7895616B2 (en) 2001-06-06 2011-02-22 Sony Corporation Reconstitution of program streams split across multiple packet identifiers
US7751560B2 (en) 2001-06-06 2010-07-06 Sony Corporation Time division partial encryption
US20030077070A1 (en) * 2001-10-23 2003-04-24 Shu Lin Fast motion trick mode using dummy predictive pictures
US7257312B2 (en) * 2001-10-23 2007-08-14 Thomson Licensing Fast motion trick mode using dummy predictive pictures
US7765567B2 (en) 2002-01-02 2010-07-27 Sony Corporation Content replacement by PID mapping
US7823174B2 (en) 2002-01-02 2010-10-26 Sony Corporation Macro-block based content replacement by PID mapping
US8818896B2 (en) 2002-09-09 2014-08-26 Sony Corporation Selective encryption with coverage encryption
US7724907B2 (en) 2002-11-05 2010-05-25 Sony Corporation Mechanism for protecting the transfer of digital content
US8572408B2 (en) 2002-11-05 2013-10-29 Sony Corporation Digital rights management of a digital device
US7711115B2 (en) 2002-11-05 2010-05-04 Sony Corporation Descrambler
US8645988B2 (en) 2002-12-13 2014-02-04 Sony Corporation Content personalization for digital content
US8667525B2 (en) 2002-12-13 2014-03-04 Sony Corporation Targeted advertisement selection from a digital stream
US20060192698A1 (en) * 2002-12-30 2006-08-31 Anthony Morel Encoding dynamic graphic content views
US7853980B2 (en) 2003-10-31 2010-12-14 Sony Corporation Bi-directional indices for trick mode video-on-demand
US20060013555A1 (en) * 2004-07-01 2006-01-19 Thomas Poslinski Commercial progress bar
US20060013557A1 (en) * 2004-07-01 2006-01-19 Thomas Poslinski Suppression of trick modes in commercial playback
US20060013556A1 (en) * 2004-07-01 2006-01-19 Thomas Poslinski Commercial information and guide
US20060013554A1 (en) * 2004-07-01 2006-01-19 Thomas Poslinski Commercial storage and retrieval
US7895617B2 (en) 2004-12-15 2011-02-22 Sony Corporation Content substitution editor
US8041190B2 (en) 2004-12-15 2011-10-18 Sony Corporation System and method for the creation, synchronization and delivery of alternate content
US20090320077A1 (en) * 2005-10-24 2009-12-24 Gazdzinski Robert F Method and apparatus for on-demand content transmission and control over networks
US20070127881A1 (en) * 2005-12-07 2007-06-07 Sony Corporation System and method for smooth fast playback of video
US7596300B2 (en) 2005-12-07 2009-09-29 Sony Corporation System and method for smooth fast playback of video
US8185921B2 (en) 2006-02-28 2012-05-22 Sony Corporation Parental control of displayed content using closed captioning
US20070204288A1 (en) * 2006-02-28 2007-08-30 Sony Electronics Inc. Parental control of displayed content using closed captioning
US20080131078A1 (en) * 2006-12-04 2008-06-05 Electronics And Telecommunications Research Institute Method for generating double-speed idr-unit for trick play, and trick play system and method using the same
US8483551B2 (en) * 2006-12-04 2013-07-09 Electronics And Telecommunications Research Institute Method for generating double-speed IDR-unit for trick play, and trick play system and method using the same
US20100061709A1 (en) * 2008-09-05 2010-03-11 Davender Agnihotri Ad Menu for skipped advertisements
US20210201639A1 (en) * 2019-12-30 2021-07-01 Axis Ab Real-time deviation in video monitoring
US11232686B2 (en) * 2019-12-30 2022-01-25 Axis Ab Real-time deviation in video monitoring

Also Published As

Publication number Publication date
WO2003036963A1 (en) 2003-05-01
EP1438844B1 (en) 2011-09-21
JP2005507219A (ja) 2005-03-10
KR100931625B1 (ko) 2009-12-14
EP1438850A4 (en) 2010-05-05
MY136898A (en) 2008-11-28
KR100929400B1 (ko) 2009-12-02
MXPA04003583A (es) 2004-07-30
CN1575593A (zh) 2005-02-02
CN101222643A (zh) 2008-07-16
MY128889A (en) 2007-02-28
CN101242504B (zh) 2011-01-12
EP1438845B1 (en) 2017-07-26
KR100961784B1 (ko) 2010-06-07
MXPA04003577A (es) 2004-07-30
EP1438843A4 (en) 2010-05-05
EP1438850A1 (en) 2004-07-21
CN1575552A (zh) 2005-02-02
CN1575552B (zh) 2010-04-14
JP2005527131A (ja) 2005-09-08
EP1438844A1 (en) 2004-07-21
MY143118A (en) 2011-03-15
MY140373A (en) 2009-12-31
AU2002348005A1 (en) 2003-06-30
EP1438843A1 (en) 2004-07-21
CN1575592A (zh) 2005-02-02
EP1438845A4 (en) 2010-05-12
MXPA04003579A (es) 2004-07-30
JP2005507215A (ja) 2005-03-10
MXPA04003889A (es) 2004-07-08
CN1293750C (zh) 2007-01-03
US20040196908A1 (en) 2004-10-07
CN100521759C (zh) 2009-07-29
WO2003053053A1 (en) 2003-06-26
MY135236A (en) 2008-03-31
CN1575594A (zh) 2005-02-02
EP1438845A1 (en) 2004-07-21
JP4296089B2 (ja) 2009-07-15
KR20040045881A (ko) 2004-06-02
JP2005507214A (ja) 2005-03-10
EP1438844A4 (en) 2010-01-13
EP1438790A4 (en) 2010-01-06
MXPA04003581A (es) 2004-07-30
CN101242504A (zh) 2008-08-13
US7505517B2 (en) 2009-03-17
EP1438790A1 (en) 2004-07-21
JP2005507204A (ja) 2005-03-10
JP4733920B2 (ja) 2011-07-27
JP4719418B2 (ja) 2011-07-06
CN1575591A (zh) 2005-02-02
WO2003036956A1 (en) 2003-05-01
KR20040045906A (ko) 2004-06-02
KR100923960B1 (ko) 2009-10-29
KR20040045870A (ko) 2004-06-02
KR20040041662A (ko) 2004-05-17
WO2003036809A1 (en) 2003-05-01
KR20040045880A (ko) 2004-06-02
KR100940032B1 (ko) 2010-02-04
WO2003036953A1 (en) 2003-05-01
CN1305305C (zh) 2007-03-14

Similar Documents

Publication Publication Date Title
US20030159152A1 (en) Fast motion trick mode using dummy bidirectional predictive pictures
US7149410B2 (en) Trick modes using non-progressive dummy bidirectional predictive pictures
US7787746B2 (en) Fast motion trick mode using non-progressive dummy bidirectional predictive pictures
US7257312B2 (en) Fast motion trick mode using dummy predictive pictures
US7174086B2 (en) Trick mode using dummy predictive pictures
US6990287B2 (en) Fast motion trick mode using dummy bidirectional predictive pictures
US7643724B2 (en) Fast motion trick mode using non-progressive dummy predictive pictures
US7106945B2 (en) Trick mode using dummy bidirectional predictive pictures
US7596301B2 (en) Reverse trick mode using intra pictures

Legal Events

Date Code Title Description
AS Assignment

Owner name: THOMSON LICENSING S.A., FRANCE

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:LIN, SHU;WILLIS, DONALD HENRY;REEL/FRAME:012811/0470

Effective date: 20020405

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION