JVC GR-DVM90 Description of Progressive Scan CCD, EN25, Regular shooting of moving images

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EN25

Description of Progressive Scan CCD

Progressive Scan is a special image sensing method which, unlike conventional interlace scanning, is able to pick up all the lines of picture information in one Scan. Since the Progressive Scan CCD is capable of outputting 60 full Frames* per second — twice the amount of conventional systems — it is able to deliver a high quality picture even when its output signal is converted to a format that can be viewed on a TV screen.

*A NTSC TV screen image is composed of 30 Frames per second. 1 Frame is made up of 2 Fields.

1 Frame

Scan A

Scan B

 

 

 

 

 

 

1. Regular shooting of moving images

Records 30 odd and 30 even image Fields, for a total of 60 per second. Since there is a time lag between an odd and even Field, when they are combined to make 1 Frame the part of the image that is moving appears as image jitter.

However, during normal playback, the moving picture looks smooth and natural.

2. Progressive mode shooting of moving images (Progressive Mode Recording  pg. 24)

Scan A is recorded, divided into an odd- and even-number Field, and then Scan B is skipped. Scans C and D are handled in the same way as Scans A and B, as illustrated below, thereby recording 30 Frames per second.

Since each recorded odd- and even-number Field originates from the same Scan there is no time lag between them, and so when they are combined into a Frame and a still image is displayed on a TV or PC monitor the picture does not look jittery. However, when moving images are played back, the picture can look unnatural.

Scan A

Scan B

Scan C

Scan D

 

 

Skip

 

 

Skip

Odd-number

Even-number

 

Odd-number

Even-number

 

Field

Field

 

Field

Field

30 Frames per second

 

 

 

 

 

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Contents GR-DVM90 It is recommended that you Dear CustomerPower Cord Protection Power SourcesPower Lines Grounding or PolarizationCleaning AccessoriesDamage Requiring Service Replacement PartsMake sure you only use cassettes with the Mini DV mark Safety PrecautionsRM-V716U Cleaning Cloth CU-V502U AA-V51U Remote Control UnitBattery Pack BN-V507U Docking StationAutomatic Demonstration How To Use Audio CablesCharging the Battery Pack PowerLithium-ion is vulnerable in colder temperatures About BatteriesUsing AC Power Using the Battery PackTo Detach The Battery Pack While sliding down BATT. RELEASE, detach itViewfinder Adjustment Grip Adjustment10 EN Tripod MountingBuilt-in Clock’s Rechargeable Lithium Battery Date/Time SettingsSet the Operation Switch to and set the Power EN11Loading/Unloading a Cassette 12 ENEN13 Recording Mode SettingLoading a MultiMediaCard 14 ENTo Unload a MultiMediaCard EN15 Picture Quality/Size Mode SettingApproximate Number of Storable Images Power Switch Position Operation ModeOperation Switch Position Manual 16 ENProgressive Mode Mode Dial PositionEN17 Function18 EN To Adjust The Brightness Of The DisplayPress START/STOP To Stop RecordingJournalistic Shooting EN19SELF-RECORDING Motor Drive Mode Snapshot Mode SelectionSnapshot For Video Recording Snapshot RecordingTo Delete Unwanted Still Images Basic Shooting SnapshotTo Remove The Shutter Sound 22 EN Slide the Power Zoom Lever towards TZoom Zoom OutEN23 When a blank portion is recorded on a tapeProper recording To End Progressive Mode Recording Progressive Mode RecordingEN25 Description of Progressive Scan CCDRegular shooting of moving images Dual Shooting Mode Dial toFeature Manual Focus Feature Auto FocusEN27 To obtain correct focusIf you have selected , or Using Menus For Detailed AdjustmentSee pg EN29 Menu Screen ExplanationsDemonstration will resume Refer to Self-Timer  pgAfter viewing demo, set to OFF Automatic demonstration will not take placeEN31 Snapshot Flash Will not fire Perform the procedure belowFires automatically if it is dark Appears Eyes Always firesEN33 Flash Brightness AdjustmentSelf-Timer Second Recording Mode Dial to VideoEN35 FADE/WIPE Selection Fade/Wipe EffectsPicture Wipe or Dissolve Selection To Deactivate The Selected EffectFader And Wipe Menu EN37Menu Effect Program AE With Special Effects To Deactivate The Selected ModeTo cancel recording the sound effect midway Sound Effect Mode SelectionDigital Sound Effects EN39Iris Lock Exposure ControlManual White Balance Operation White Balance AdjustmentEN41 To Return To Automatic White BalanceAvailable only with the remote control provided  pg To Control The Speaker VolumeEach setting is linked with Display Menu Following procedure applies to all except Synchro Comp  pgEN43 Playback Sound 44 ENDisplay Blank Search To cancel Blank Search midwayEN45 Rotate the Menu wheel to select EXECUTE, then press it46 EN To cancel E-Mail Clip RecordingMail Clip Recording Auto Playback Normal PlaybackImages shot with the camcorder are automatically Index Screen EN49 Index PlaybackIf you press Index twice If you press Index three timesProtecting Files 50 ENTo Protect a File To Remove ProtectionEN51 Deleting FilesTo Select a File by Browsing Files Stored in Memory To Delete ALL FilesInitializing a MultiMediaCard 52 ENYou can initialize a MultiMediaCard anytime EN53 Superimposing a Print FrameTo Make The Print Frame Disappear Press Print Frame54 EN Down the Lock Button located on the switchPrint Frame Deletion To Delete ALL Print Frames EN55Perform steps 1 through 4 on pag To Reset The Setting Setting Print Information Dpof Setting56 EN To Print ALL Still Images ONE Print for EachEN57 To Reset The No. Of PrintsTo Print by Selecting Still Images and NO. of Prints Docking Station Attachment 58 ENEN59 If using a VCR . . . go to step If not . . . go to stepConnection To a Personal Computer 60 ENEN61 Connection To a Video Unit Equipped With a DV ConnectorMake sure all units are turned off Dubbing To a VCR 62 ENDate/Time Set DATE/TIME to AUTO, on or OFF Set Time Code to on or OFF in the Menu Screen  pgTo use this camcorder as a player EN6364 EN Indicator disappears when dubbing is completeDubbing Images Stored In a MultiMediaCard To a Tape EN65 Dubbing Images Recorded On a Tape To a MultiMediaCardRe-attach the battery compartment cover Installing The Batteries66 EN Functions Buttons EN67Feature Frame-By-Frame Playback Feature Slow-Motion PlaybackFeature Playback Zoom 68 ENEN69 Feature Playback Special EffectsSET REMOTE/VCR Code 70 ENVCR Recording deck Press Shift for this oneEN71 JVC VCR equipped with a remote pause connectorMake Connections VCR other than aboveSelect Scenes 72 ENAutomatic Editing to VCR EN73For More Accurate Editing 74 ENDiagnosing VCR/CAMCORDER Timing Recording deckEN75 Adjustment of VCR/CAMCORDER Timing76 EN Set 12BIT Mode to Sound 2 or MIX Menu Screen  pgAudio Dubbing To hear the dubbed sound during playbackEN77 Audio Dubbing Using Digital Sound Effects78 EN Cleaning The CamcorderAfter Use Corrective Action Troubleshooting80 EN TroubleshootingWas registered EN8182 EN LCD monitor or Certain Fade/Wipe effects EN8384 EN Auto Shut Off EN8586 EN EN87 Appears while the tape is running 88 ENOrder of quality EN89 LCD Monitor/Viewfinder Indications During Video Playback Displays the sound modeLCD Monitor/Viewfinder Indications During D.S.C. Playback Displays the selected Digital Sound EffectIndications Function EN9192 EN While the Power Switch is set toIndications  pgEN93 Temperature Range Specifications94 EN EN95 96 EN Time Code  pg , 31, 43 EN97For General 98 ENFor Digital Video Camera For Digital Still CameraEN99 For ConnectorsGR-DVM90