| 摘要 |
959,623. Magnetic tape recording; television. SONY CORPORATION. June 18,1962 [June 21, 1961], No. 23347/62. Heading G5R. A helical-wrap recorder for television signals uses a pair of revoluble heads 13a, 13b so spaced, axially and azimuthally on the shaft 30 that the resulting record has independent sets of oblique tracks 12a, 12b; the tracks 12a carry the video signals and line-synch pulses while the tracks 12b carry the frame-synch pulses. The head 13b may be of lower quality than the head 13a. |
