| ReturnTo Theme-Group-Choice | Onelevelup |
| 5D097 | Control and indication of speed of tape record carriers (2) | |
| G11B15/467 -15/473@Z | ||
| G11B15/467@A;15/467@B;15/467@C;15/467@D;15/467@E;15/467@F;15/467@G;15/467@H;15/467@J;15/467@K;15/467@L;15/467@M;15/467@N;15/467@P;15/467@Q;15/467@Z;15/473@E;15/473@H;15/473@Z | AA | AA00 TYPES OF RECORDING AND REPRODUCTION DEVICES |
AA01 | AA02 | AA03 | AA04 | AA05 | AA06 | AA07 | AA08 | AA09 | |
| . Rotary head type recording and reproduction devices | . . Video recording and reproduction devices | . . . Eight-millimeter video tape recorder (VTR) | . . Audio recording and reproduction devices | . . . Digital audio recording and reproduction devices and digital audio tape devices (DAT) | . . Data recording and reproduction devices (e.g., mass storage system [MSS]) | . Scanning types | . . Width-direction scanning types | . . Length-direction scanning types | ||||
| BB | BB00 OPERATIONAL MODES |
BB01 | BB02 | BB03 | BB04 | BB05 | BB06 | BB07 | BB08 | BB09 | ||
| . Record mode | . Reproduce mode | . . General reproduction | . . Variable speed reproduction | . . . Still picture reproduction | . . . High speed reproduction and cuing | . . . Low speed and slow motion reproduction | . . . . Intermittent slow motion reproduction | . . . Reproduction in the reverse direction (i.e., including high and low speed reproduction in reverse direction) | ||||
| BB11 | BB12 | BB14 | BB15 | |||||||||
| . Fast feed mode | . Rewind mode | . Start and accelerate modes | . Decelerate and stop modes | |||||||||
| CC | CC00 OBJECTS TO BE CONTROLLED |
CC01 | CC02 | CC04 | CC05 | CC07 | CC09 | CC10 | ||||
| . Rotary heads | . . Rotary head motors | . Capstans | . . Capstan motors | . Feed reels and winding reels | . Tape speed | . . Element rotating at the tape speed | ||||||
| EE | EE00 DETECTION MEANS |
EE01 | EE02 | EE03 | EE04 | EE05 | EE06 | EE07 | EE08 | EE09 | ||
| . Detection using the rotary head | . . Use of the main information signal itself (e.g., audio and television signals as control signals) | . . . Use of the synchronization signal in the information signal | . Detection using the capstan | . Detection using tape speed | . Detection of rotation using magnetic means | . Detection of rotation using optical means | . Detection of rotation using a drive motor | . Arrangement or mounting of rotation detecting means | ||||
| FF | FF00 RECORDING OR REPRODUCTION OF CONTROL SIGNALS |
FF01 | FF03 | FF04 | FF05 | |||||||
| . Recording by superimposing the control signal on the information signal | . Recording on a track dedicated to control signals | . . Recording by mixing other signals with the control signals | . . Arrangement or mounting of a head for control signals | |||||||||
| FF11 | FF12 | FF14 | FF15 | FF16 | FF17 | FF19 | ||||||
| . Recording or reproduction circuits for control signals | . . Mixing or separating of control signal with or from other signals | . . Recording circuits for control signals | . . Reproduction circuits for control signals | . . . Stabilization of control signals | . . . Handling of missing control signals | . . Adjustment phase of control signals | ||||||
| GG | GG00 REFERENCE VALUES FOR CONTROL |
GG01 | GG02 | GG03 | GG04 | GG05 | GG06 | GG07 | GG08 | GG09 | GG10 | |
| . Generation or processing of reference signals | . . Use of oscillation circuits | . . . Shared use of oscillation circuits | . . Use of commercial power supplies | . . Handling of missing reference signals | . . Use of synchronization signals | . . . Use of vertical or horizontal synchronization signals | . . . Synchronization of external synchronization signals | . . . Handling of the presence or absence of, or missing, synchronization signals | . . . . Switching to internal reference signals | |||
| HH | HH00 CONTROL CIRCUITS |
HH01 | HH02 | HH03 | HH04 | HH06 | HH07 | |||||
| . Speed control circuits | . Phase control circuits | . Combination of speed and phase control circuits | . . Selectively switching between speed control and phase control | . Digital servo circuits | . Open loop control circuits | |||||||
| HH11 | HH12 | HH14 | HH15 | HH16 | HH17 | HH18 | ||||||
| . Components of control circuits | . . Error detection circuits (e.g., phase-comparison circuits | . . Compensation circuits | . . Drive circuits | . . Internal feedback circuits | . . Circuits for improving transient response characteristics | . . Circuits for adjusting or varying control gain | ||||||
| HH22 | HH23 | HH25 | HH27 | |||||||||
| . . Circuits for processing rotational speed or phase signals | . . . Circuits for shaping rotational speed or phase signals | . . Tracking adjustment circuits and lock phase adjustment circuits | . . Start-up circuits | |||||||||
| JJ | JJ00 CONFIGURATION OF OTHER CONTROL SYSTEMS |
JJ01 | JJ02 | JJ03 | JJ04 | JJ06 | JJ07 | JJ09 | ||||
| . Configuration of control systems | . . Head servo systems | . . Capstan servo systems | . . Combination of head and capstan servo systems | . Recording on tape at speeds other than normal speed | . . Field skip recording | . Handling of a plurality of television systems | ||||||
| JJ11 | JJ12 | JJ13 | JJ15 | JJ16 | JJ17 | JJ18 | JJ19 | JJ20 | ||||
| . Discrimination or automatic switching between speed modes | . Synchronization with other devices | . . Synchronized speed of plural tapes | . Intermittent feeding | . . Intermittent feeding mechanisms | . . Timing control for starting or stopping | . . . Stopping of tape at the required position on the track | . . Detection of the tape stopping position | . . Control of the additional feed amount based on the current stopping position | ||||
| JJ21 | JJ22 | JJ24 | JJ25 | JJ27 | JJ28 | JJ29 | JJ30 | |||||
| . Elimination of periodic speed fluctuation | . Dubbing prohibitions | . Use of non-electrical means | . . Use of mechanical means | . Testing, inspection, or measurement of control systems | . Adjustment of control systems (i.e., excluding tracking adjustment) | . Monitoring, sounding alarms, or indication in control systems | . . Indication of the tracking state | |||||
| KK | KK00 EDITING AND SUCCESSIVE RECORDING |
KK01 | KK02 | KK03 | KK04 | KK05 | KK06 | KK07 | KK08 | |||
| . Editing | . . Insert editing | . . Assembly editing | . . Phase matching for editing | . Successive recording | . . Control of tape start-up timing (i.e., pause timing control, automatic editing [AE], or timing phase [TP]) | . . Recording after synchronization (i.e., back space editing or phase matching [PM]) | . . . Rewinding of tape for successive recording | |||||
| LL | LL00 AUTOMATIC TRACKING |
LL01 | LL02 | LL03 | LL04 | LL06 | LL07 | LL08 | LL09 | LL10 | ||
| . Detection of tracking errors | . . Use of the main information signal itself (e.g., television signals) | . . . Application of periodic variation and wobbling | . . . Use of synchronization information signals | . . Use of pilot signals for tracking | . . . Use of one kind of pilot signal | . . . Use of two kinds of pilot signals | . . . Use of three or more kinds of pilot signals | . . . . Four-frequency tracking | ||||
| LL12 | LL13 | LL14 | LL16 | LL17 | LL20 | |||||||
| . . Signal amplitude comparison | . . . Comparison with the previous signal amplitude | . . Detection of time or phase differences | . Generation of pilot signals | . Drag-in of automatic tracking | . Others |