摘要:
An apparatus for recording and reproducing video and audio signals in either analog or digital form. The heads are arranged to conform with existing analog standards, such as VHS, and yet are also able to record in digital form in adjacent non-overlapping tracks. In a preferred embodiment, one pair of heads is arranged with a small azimuth angle (.+-.6 degrees), and another pair is arranged with a larger second azimuth angle (.+-.30 degrees), conforming to the VHS standard, but the head width and location are modified compared to the standard such as to allow recording and reproducing both VHS as well as digital tapes.
摘要:
Recording and/or reproducing device (1) having at least one magnetic head (8, 9) provided for scanning a magnetic record carrier (6) and having a lead-in core limb (34) and a lead-out core limb (35) each consisting of a monocrystalline ferrite and constituting a transducing gap (37), in which the lead-in core limb (34) has a mechanical main direction (39) in a -direction of its monocrystalline ferrite, which main direction encloses an acute angle .THETA..sub.E with respect to the transducing gap (37), and in which the lead-out core limb (35) has a mechanical main direction (41) in a -direction of its monocrystalline ferrite, which main direction encloses a second acute angle .THETA..sub.A with respect to the transducing gap (37), the two acute angles .THETA..sub.E and .THETA..sub.A in the magnetic head (8, 9) being determined in such a way that ferrite material is uniformly worn off the two core limbs (34, 35) at essentially the same wear rate (K) when there is a relative movement between a record carrier (6) and the magnetic head (8, 9).
摘要:
An apparatus for recording and reproducing video and audio signals in either analog or digital form. The heads are arranged to conform with existing analog standards, such as VHS, and yet are also able to record in digital form in adjacent non-overlapping tracks. In a preferred embodiment, one pair of heads is arranged with a small azimuth angle (+/−6 degrees), and another pair is arranged with a larger second azimuth angle (+/−30 degrees), conforming to the VHS standard, but the head width and location are modified compared to the standard such as to allow recording and reproducing both VHS as well as digital tapes.
摘要:
An apparatus for recording and reproducing video and audio signals in either analog or digital form. The heads are arranged to conform with existing analog standards, such as VHS, and yet are also able to record in digital form in adjacent non-overlapping tracks. In a preferred embodiment, one pair of heads is arranged with a small azimuth angle (+/-6 degrees), and another pair is arranged with a larger second azimuth angle (+/-30 degrees), conforming to the VHS standard, but the head width and location are modified compared to the standard such as to allow recording and reproducing both VHS as well as digital tapes.
摘要:
Magnetic head comprising a magnetic core having two core limbs (1,3) formed from a ferrite, which core limbs constitute two core faces located opposite each other, at least one of said core faces having a cladding of a soft-magnetic material having a higher saturation magnetisation than the ferrite, and a non-magnetic transducing gap (11) present between the core faces and having at least one layer of a first metallic material (21) and bonded layers (23) of a second metallic material. The cladding comprises a first cladding layer (15) of an alloy based on Ni-Fe on which a second cladding layer (17) of an amorphous alloy based on Co-Ti and/or Zr and/or Hf-Nb and/or Ta is provided, while the first metallic material, chosen from the group of Mo, Ti, Cr and NiCr, is directly provided on the amorphous alloy of the cladding. (FIG. 2).
摘要:
A damping material (19) is provided on one of the two side faces (7, 8), of a magnetic head having two plate shaped ferrite core limbs (3, 4). The material consists of a synthetic resin filled with less than 30% by volume of filler having a density of more than 10.times.10.sup.3 kg/m.sup.3. The filler is at least 74% by weight of the damping material and the density of the damping material is larger than 4.times.10.sup.3 kg/m.sup.3 and its modulus of elasticity ranges between 10.sup.7 and 10.sup.9 Pa.
摘要翻译:阻尼材料(19)设置在具有两个板状铁氧体磁心体(3,4)的磁头的两个侧面(7,8)中的一个上。 该材料由填充有小于30体积%的密度大于10×10 3 kg / m 3的填料的合成树脂组成。 填料至少为阻尼材料的74重量%,阻尼材料的密度大于4×10 3 kg / m 3,弹性模量范围为107至109Pa。