| | CLASS NOTES |
| 1 | DF | USE SURVEY AND ACCOUNTING {4} |
| 5.5 | DF | USE OR ACCESS BLOCKING (E.G., LOCKING SWITCH) |
| 6 | DF | WIRED BROADCAST (E.G., CABLE) {5} |
| 13 | DF | TWO-WAY (E.G., INTERACTIVE) {1} |
| 21 | DF | PLURAL TRANSMITTER SYSTEM CONSIDERATIONS (E.G., INTERFERENCE REDUCTION) |
| 22 | DF | SLOW SCANNING TRANSMISSION (E.G., STILL FRAME) {1} |
| 24 | DF | PLURAL STILL IMAGES OVER CONVENTIONAL CHANNEL |
| 25 | DF | IMAGE FALSIFICATION TO IMPROVE VIEWER PERCEPTION OF SELECTIVE OBJECT (E.G., MOVING OBJECT OR TARGET) {4} |
| 31 | DF | BACK SCATTER REDUCTION |
| 32 | DF | PSEUDO COLOR {2} |
| 35 | DF | PSEUDO BLACK AND WHITE |
| 36 | DF | PANORAMIC {3} |
| 40 | DF | HOLOGRAPHIC {1} |
| 42 | DF | STEREOSCOPIC {5} |
| 61 | DF | SPECIAL APPLICATIONS {15} |
| 162 | DF | RESPONSIVE TO NONVISIBLE ENERGY {2} |
| 169 | DF | OBJECT TRACKING {2} |
| 173 | DF | CATHODE-RAY TUBE BURN-IN PREVENTION {1} |
| 175 | DF | CAMERA WITH BUILT-IN TEST SIGNAL GENERATOR, TEST PATTERN, OR ADJUSTING ADJUNCT {1} |
| 177 | DF | DISPLAY OR RECEIVER WITH BUILT-IN TEST SIGNAL GENERATOR, TEST PATTERN, OR ADJUSTING ADJUNCT {1} |
| 180 | DF | MONITORING, TESTING, OR MEASURING {6} |
| 195 | DF | MECHANICAL OPTICAL SCANNING {6} |
| 206 | DF | SPECIAL SCANNING (E.G., SPIRAL, RANDOM, ZIGZAG) |
| 207 | DF | CAMERA, SYSTEM AND DETAIL {19} |
| 377 | DF | CATHODE-RAY TUBE DISPLAY EXCESSIVE VOLTAGE CONTROL {1} |
| 379 | DF | CATHODE-RAY TUBE DISPLAY AUTOMATIC BLACK LEVEL BIAS CONTROL |
| 380 | DF | CATHODE-RAY TUBE DISPLAY BEAM CURRENT CONTROL {1} |
| 383 | DF | MODULAR IMAGE DISPLAY SYSTEM |
| 384 | DF | BANDWIDTH REDUCTION SYSTEM {7} |
| 441 | DF | FORMAT CONVERSION {9} |
| 460 | DF | DIVERSE DEVICE CONTROLLED BY INFORMATION EMBEDDED IN VIDEO SIGNAL |
| 461 | DF | NONPICTORIAL DATA PACKET IN TELEVISION FORMAT {7} |
| 469 | DF | FORMAT {6} |
| 497 | DF | FLUTTER OR JITTER CORRECTION (E.G., DYNAMIC REPRODUCTION) {1} |
| 500 | DF | SYNCHRONIZATION {11} |
| 552 | DF | COMBINED WITH DIVERSE ART DEVICE (E.G., COMPUTER, TELEPHONE) |
| 553 | DF | BASIC RECEIVER WITH ADDITIONAL FUNCTION {4} |
| 571 | DF | IMAGE SIGNAL PROCESSING CIRCUITRY SPECIFIC TO TELEVISION {34} |
| 722 | DF | STUDIO EQUIPMENT |
| 723 | DF | TELEVISION TRANSMITTER CIRCUITRY {1} |
| 725 | DF | RECEIVER CIRCUITRY {10} |
| 739 | DF | VIDEO DISPLAY {13} |
| 844 | DF | MISCELLANEOUS |
| | ***************************** |
| | CROSS-REFERENCE ART COLLECTIONS |
| | ****************************** |
| 901 | DF | HIGH SPEED TELEVISION SYSTEM |
| 902 | DF | PHOTOCHROMIC |
| 903 | DF | INCLUDING SIDE PANEL INFORMATION IN SINGLE CHANNEL |
| 904 | DF | SEPARATION OR JOINING OF SIDE AND CENTER PANELS |
| 905 | DF | REPRODUCTION OF A COLOR FIELD OR FRAME |
| 906 | DF | TELEVISION SCHEDULE |
| 907 | DF | COMMERCIAL VERIFICATION |
| 908 | DF | CONVERTIBLE CIRCUITS (E.G., Y/C SEPARATION OR NOISE REDUCTION) |
| 909 | DF | NOISE RESPONSIVE SIGNAL PROCESSING |
| 910 | DF | FLICKER REDUCTION |
| 911 | DF | LINE DOUBLER ADAPTED FOR REPRODUCING PROGRAM ORIGINALLY FROM FILM (E.G., 24 FRAME PER SECOND) |
| 912 | DF | DIFFERENTIAL AMPLITUDE CONSIDERATION (E.G., AMPLITUDE VS. FREQUENCY) |
| 913 | DF | LETTERBOX (E.G., DISPLAY 16:9 ASPECT RATIO IMAGE ON 4:3 SCREEN) |
| 914 | DF | DELAY FOR EQUALIZATION |
