GB2231438A - Video signal reproduction process - Google Patents

Video signal reproduction process Download PDF

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Publication number
GB2231438A
GB2231438A GB9005294A GB9005294A GB2231438A GB 2231438 A GB2231438 A GB 2231438A GB 9005294 A GB9005294 A GB 9005294A GB 9005294 A GB9005294 A GB 9005294A GB 2231438 A GB2231438 A GB 2231438A
Authority
GB
United Kingdom
Prior art keywords
recording
playback
control means
recorded
programmer
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.)
Granted
Application number
GB9005294A
Other versions
GB2231438B (en
GB9005294D0 (en
Inventor
Henrik Fegesch
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.)
Philips GmbH
Original Assignee
BTS Broadcast Television Systems GmbH
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 BTS Broadcast Television Systems GmbH filed Critical BTS Broadcast Television Systems GmbH
Publication of GB9005294D0 publication Critical patent/GB9005294D0/en
Publication of GB2231438A publication Critical patent/GB2231438A/en
Application granted granted Critical
Publication of GB2231438B publication Critical patent/GB2231438B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

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
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B15/00—Driving, starting or stopping record carriers of filamentary or web form; Driving both such record carriers and heads; Guiding such record carriers or containers therefor; Control thereof; Control of operating function
    • G11B15/02—Control of operating function, e.g. switching from recording to reproducing
    • G11B15/026—Control of operating function, e.g. switching from recording to reproducing by using processor, e.g. microcomputer
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B15/00—Driving, starting or stopping record carriers of filamentary or web form; Driving both such record carriers and heads; Guiding such record carriers or containers therefor; Control thereof; Control of operating function
    • G11B15/02—Control of operating function, e.g. switching from recording to reproducing
    • G11B15/05—Control of operating function, e.g. switching from recording to reproducing by sensing features present on or derived from record carrier or container
    • G11B15/087—Control of operating function, e.g. switching from recording to reproducing by sensing features present on or derived from record carrier or container by sensing recorded signals
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B15/00—Driving, starting or stopping record carriers of filamentary or web form; Driving both such record carriers and heads; Guiding such record carriers or containers therefor; Control thereof; Control of operating function
    • G11B15/18—Driving; Starting; Stopping; Arrangements for control or regulation thereof
    • G11B15/1808—Driving of both record carrier and head
    • G11B15/1875—Driving of both record carrier and head adaptations for special effects or editing
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
    • G11B27/002—Programmed access in sequence to a plurality of record carriers or indexed parts, e.g. tracks, thereof, e.g. for editing
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
    • G11B27/10—Indexing; Addressing; Timing or synchronising; Measuring tape travel
    • G11B27/19—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier
    • G11B27/28—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording
    • G11B27/32—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording on separate auxiliary tracks of the same or an auxiliary record carrier
    • G11B27/322—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording on separate auxiliary tracks of the same or an auxiliary record carrier used signal is digitally coded
    • G11B27/323—Time code signal, e.g. on a cue track as SMPTE- or EBU-time code
    • 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
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B2220/00—Record carriers by type
    • G11B2220/90—Tape-like record carriers

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Computer Hardware Design (AREA)
  • Television Signal Processing For Recording (AREA)
  • Management Or Editing Of Information On Record Carriers (AREA)
  • Indexing, Searching, Synchronizing, And The Amount Of Synchronization Travel Of Record Carriers (AREA)

Description

i 1 :2 2 is -1 -Q 3 a VIDEO SIGNAL REPRODUCTION PROCESS This invention
relates to a process for the reproduction of a video signal at a speed different from that used in recording.
In order to repeat in slow motion specific events during a television broadcast, it is known from US Patent Specification 4 386 379 to use a programmer to control the operating functions of a professional video recorder via a data bus. The programmer is designed in such a way that firs the scenes 11photographed" by a television camera are recorded on the magnetic tape of a video recorder. If a specific event, for example a goal scoring scene, from the recorded scenes is to be repeated as a slow motion sequence, the operator uses the programmer to set a time mark when a goal is scored. At the end of the goal scoring scene the magnetic tape is wound back to a presettable position prior to the time of the time mark. It is then possible, either by the operator pressing a button or automatically, for the slow motion playback of the specific event to begin.
It is desirable, particularly in the case of sporting events, to associate a respective video recorder and programmer with each television camera, so as to be able to record irrecoverable scenes from different viewing directions and to play them back as a slow Y motion sequence during the running report. However, as the recording and control equipment necessary for such events are usually located in an outside broadcast van, and as the space in outside broadcast vans is limited, one cannot accommodate in them a number of the space-consuming programmers normally located in a large-area control console.
The object of the present invention is therefore to provide a process for the reproduction of a video signal which, despite spatial limitations in an outside broadcast van, permits the control of multipl video recorders associated with respective television cameras for slow motion playback.
e Accordingly, the present invention provides a process for the reproduction of a video signal in which the signal is recorded on the information carrier of a recording and playback unit at one speed and reproduced from the information carrier at a different speed under the control of a remote control means for the operating functions of the drive mechanism of the recording and playback unit, wherein during recording the drive mechanisms of several recording and playback units are controlled by a single control means and a time mark is set by the control means to indicate a particular scene to be played back, wherein in preparation for the playback of the recorded video signals the drive mechanisms are rewound 4 i by the control means to the start of the marked scene in parallel, and wherein during playback the control means is selectively associated with at least one of the drive mechanisms of the recording and playback units and controls the operating functions thereof.
The invention has the advantage that a single operator can use a single programmer to control several video recorders. This makes it possible to reduce the number of monitors needed for monitoring the individual video recorders. In addition, the number of connecting cables is less than would be required for a multiple programmer/multiple video recorder arrangement.
It is particularly advantageous that simultaneously with the selection of a specific recorder, the slow motion signal supplied by the magnetic tape can be locked on to a central monitor.
An embodiment of the invention will now be described by way of example with reference to the accompanying drawings, wherein:
Figure 1 is a block circuit diagram of an apparatus according to the prior art, and
Figure 2 is a block circuit diagram of an apparatus for performing an embodiment of-.the process according to the present invention.
Referring to the drawings, the block circuit diagram of Figure 1 shows two video recorders 1 and-2 each with a respective programmer 3 and 4. Each video recorder 1 and 2 is connected to its respective programmer 3 and 4 by two lines 5, 6 and 7, 8 respectively. Lines 5 and 7 permit the programmers 3 and 4 to control the most important drive mechanism functions of the associated video recorders 1 and 2. Lines 6 and 8 serve as return lines from the video recorders 1 and 2 to the respective programmers 3 and 4, in order to acknowledge the performance of certain drive mechanism functions and in order to transmit time code signals. Signal transmission across lines 5 to 8 takes place in the form of serial data.
The operation of recorders as shown in the block circuit diagram of Figure 1 is known in the art. Programmers of the aforementioned type are, for example, manufactured and sold by Sony Corporation under the designation DTR-2000 and by BTS Broadcast Television Systems GmbH under the designation BPS 9A.
These programmers are generally called slomo programmers in television studio operation.
As stated hereinbefore, programmers for the slow motion control of video recorders can be easily monitored and are therefore relatively space-consuming, so as to exclude incorrect operations on the part of an operator during a television broadcast. Thus, it is not possible to associate a separate programmer with each video recorder, because insufficient space is available on the console-like control desks in the outside broadcast van. The latter also has inadequate space for additional personnel for operating several programmers.
In the block circuit diagram of Figure 2 there is only one programmer 9 for the joint control of several, in the present embodiment three, video recorders 10, 11 and 12. In the transmission lines between the programmer 9 and the video recorders 10, 11 and 12 there is connected a coupling device 13 which determines the association of the programmer 9 with the video recorders 10, 11 and 12.
To facilitate understanding, the coupling device 13 in the present embodiment has two controlled switch groups 14, 15 which are controlled by control signals on lines 16, 17 by the programmer 9.
The programmer 9 is subdivided into four areas. A first area 18 is used for representing the time code delivered by the video recorders 10 to 12. A second area 19 is provided for the remote control of the most important drive mechanism functions of the video recorders 10 to 12. These drive mechanism functions include fast forward and rewind of the magnetic tape, as well as the control of the recording and playback modes. By means of a third area 20 it is possible to select a specific slow motion speed in the playback mode. For this purpose the control panel of the programmer 9 has keys for selecting predetermined slow motion speeds, as well as a T-lever for selecting an adjustable slow motion speed. Control knobs in area 21 make it possible to associate the programmer 9 via the coupling device 13 with a selected one or more video recorders 10 to 12 for slow motion playback.
The operation of the above arrangement is now explained in connection with the television transmission of a football match. It is assumed that at this football match the goal area is photographed by three television cameras (not shown), which monitor this area from three different directions. The video signals generated by the television cameras are simultaneously recorded by respective ones of the video recorders 10 to 12. At the same time, the time code generated by a time code generator 22 is recorded in known manner on a longitudinal track of the tapes. The time code also passes from the video recorder 10, across the reversing switch of switch group 14, to the programmer 9 and is shown there on the display in area 18. If a goal is scored an operator of the programmer 9 sets a 1 time mark by pressing a key in area 19 and this indicates the time at which the goal was scored. At the end of the goal scene the operator by pressing a key in area 19 of programmer 9 ensures that the magnetic tapes of the three video recorders 10 to 12 are rapidly wound back in parallel to a presettable position before the time of the set time mark, in order to play back in slow motion those scenes which took place a few seconds before the goal was scored.
During rewind the time code previously recorded by the unit 10 is shown in the display area 18, and as soon as it is indicated on the programmer 9 that the video recorders 10 to 12 have reached the starting point for slow motion play-back, the operator informs the vision control in the outside broadcast van by means of the intercom that the slow motion playback transmission can begin. After this has been cleared with vision control the operator can select, by means of a selection in area 21 of the programmer 9, one of the three video recorders for slow motion playback. At the start of slow motion playback programmer 9 is associated with the selected video recorder.
It is obviously also possible simultaneously to start several video recorders for a slow motion playback. In this case the vision control takes over the further processing and distribution of the slow motion signals delivered by the video recorders.
a 1 At the end of the slow motion playback of the goal scene it is possible, by selecting another video recorder, to show again the goal scene in slow motion as photographed by another television camera. In all cases the slow motion speed can be selected by the operator on the programmer 9.
According to a further development of the process it is possible, simultaneously with the selection of a specific recorder, to lock the slow motion signal delivered by the tape onto a central monitor, so that in each case the video signal being transmitted is reproduced. This reduces possibilities for incorrect operation of the programmer 9.
In the present embodiment the association of programmer to video recorder is made by the switch groups 14 and 15 in the coupling device 13, However, it is clearly also possible within the scope of the present invention to carry out the association of the programmer 9 to the video recorders by appropriately influencing the data transmitted on the lines connecting them.
t

Claims (5)

1. A process for the reproduction of a video signal in which the signal is recorded on the information carrier of a recording and playback unit at one speed and reproduced from the information carrier at a different speed under the control of a remote control means for the operating functions of the drive mechanism of the recording and playback unit, wherein during recording the drive mechanisms of several recording and playback units are controlled by a single control means and a time mark is set by the control means to indicate a particular scene to be played back, wherein in preparation for the playback of the recorded video signals the drive mechanisms are rewound by the control means to the start of the marked scene in parallel, and wherein during playback the control means is selectively associated with at least one of the drive mechanisms of the recording and playback units and controls the operating functions thereof.
2. A process according to claim 1, wherein the association of the control means is effected by a coupling device which permits the selection of one or several of the recording and playback units.
3. A process according to claim 1 or 2, wherein in parallel with the recording of the video signals by -1 - 10 the several recording and playback units the time information from a time code generator is recorded by at least one of the units, and wherein when the drive mechanisms are rewound the recorded time information played back from the said one unit is displayed at the control means for determining the start of playback.
4. A process according to claim 1, 2 or 3, wherein simultaneously with the association of the control means with a specific recording and playback unit, the video signal delivered by the latter is locked onto a central monitor.
5. A process as claimed in claim 1, substantially as described with reference to Figure 2 of the accompanying drawings.
Published 1990 atThe Patent Office.State House. 6671 High Holborn, LondonWC1R4TP. Further copies maybe obtainedfrom The Patent 0Mce. Sales Branch. St Mary Cray. Orpington. Kent BR5 3RD Printed by Multiplex techniques ltd, St Mary Cray. Kent. Con. 1187
GB9005294A 1989-03-25 1990-03-09 Video signal reproduction process Expired - Fee Related GB2231438B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19893909844 DE3909844C1 (en) 1989-03-25 1989-03-25

Publications (3)

Publication Number Publication Date
GB9005294D0 GB9005294D0 (en) 1990-05-02
GB2231438A true GB2231438A (en) 1990-11-14
GB2231438B GB2231438B (en) 1993-05-19

Family

ID=6377194

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9005294A Expired - Fee Related GB2231438B (en) 1989-03-25 1990-03-09 Video signal reproduction process

Country Status (5)

Country Link
JP (1) JP2956779B2 (en)
DE (1) DE3909844C1 (en)
ES (1) ES2021233A6 (en)
FR (1) FR2644959B1 (en)
GB (1) GB2231438B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011143342A1 (en) * 2010-05-12 2011-11-17 Woodman Labs, Inc. Broadcast management system

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4386379A (en) * 1980-10-10 1983-05-31 Sony Corporation Videotape cue control and display apparatus

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1145225B (en) * 1981-12-07 1986-11-05 Cselt Centro Studi Lab Telecom DEVICE FOR AUTOMATIC CONTROL THROUGH THE CALCULATOR OF THE DRIVE OF MULTIPLE VIDEO RECORDERS
JPS5982648A (en) * 1982-11-01 1984-05-12 Sony Corp Controlling device for video tape recorder
FR2542542B1 (en) * 1983-03-09 1985-06-28 France Regions Fr3 Ste Nale Pr PORTABLE TELEVISION BROADCASTING SYSTEM

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4386379A (en) * 1980-10-10 1983-05-31 Sony Corporation Videotape cue control and display apparatus

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011143342A1 (en) * 2010-05-12 2011-11-17 Woodman Labs, Inc. Broadcast management system
US8606073B2 (en) 2010-05-12 2013-12-10 Woodman Labs, Inc. Broadcast management system
US20140064701A1 (en) * 2010-05-12 2014-03-06 Woodman Labs, Inc. Broadcast Management System
US9142257B2 (en) 2010-05-12 2015-09-22 Gopro, Inc. Broadcast management system
US9794615B2 (en) 2010-05-12 2017-10-17 Gopro, Inc. Broadcast management system
US10477262B2 (en) 2010-05-12 2019-11-12 Gopro, Inc. Broadcast management system

Also Published As

Publication number Publication date
DE3909844C1 (en) 1990-08-02
FR2644959A1 (en) 1990-09-28
GB2231438B (en) 1993-05-19
JPH02285884A (en) 1990-11-26
GB9005294D0 (en) 1990-05-02
FR2644959B1 (en) 1997-07-25
JP2956779B2 (en) 1999-10-04
ES2021233A6 (en) 1991-10-16

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20060309