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HiPac is a successor of the PlayTape cartridge, licensed by Toshiba and had similar dimensions of 70 mm × 85 mm × 12 mm (2.76 in × 3.35 in × 0.47 in), which is closer to Compact Cassette than other cartridges containing Bernard Cousino's endless loop tape.
PAL U-matic Hi-band increased the FM carrier frequency to 4.8-6.4 MHz, while U-matic SP increased it even further to 5.6-7.2 MHz, while increasing the color carrier frequency to 924 kHz. [7] U-matic tape moves at 3.75 inches per second, and has a tape writing speed of 8.54 meters per second for PAL or 10.26 for NTSC.
Cassette tape, a two-spool tape cassette format for analog audio recording and playback and introduced in 1963 by Philips; DC-International, a format that was created by Grundig after Phillips had abandoned an earlier format that was being created alongside the Compact Cassette; 8-track tape, continuous loop tape system introduced in 1964
In 1989 JVC increased the run time to 30 minutes by using thinner tape. [3] Later, JVC offered 45-minute and 60-minute cassettes. For comparison, 120-minute 8-mm cassettes became available in the late 1985 and quickly became the norm.
The thickest tape normally used in cassettes is about 16-18 μm in thickness, and is used in C60 cassettes and in shorter lengths such as the C46. As the standard tape speed for a compact cassette is 1 + 7 ⁄ 8 inches per second (4.762 cm/s) and a C60 cassette records 30 minutes per side, a C60 cassette in theory holds 281 + 1 ⁄ 4 ft (85.73 ...
By 1976, ferricobalt formulations took over the video tape market, [60] and eventually they became the dominant high-performance tape for audio cassette. [51] Chromium dioxide disappeared from the Japanese domestic market, [51] although chrome remained the tape of choice for high fidelity cassette duplication among the music labels. In consumer ...
This means that the tape changes length by 1.16 mm per 10 m tape per 10 °C change from the standard temperature of the tape. For a 30 meter long tape with standard temperature of 20 °C used at 40 °C, the change in length is 7 mm over the length of the tape.
The drum rotates at high speed (one or two rotations per picture frame—about 1800 or 3600 rpm for NTSC, and 1500 or 3000 rpm for PAL) while the tape is pulled along the drum's path. Because the tape and drum are oriented at a slight angular offset, the recording tracks are laid down as parallel diagonal stripes on the tape.