Head apparatus, hard disk apparatus and recording and playback apparatus
AssigneeSony Corporation
InventorsKeiji Narusawa, Norio Shoji
Life of this patent
Estimating the term…
Abstract
A head apparatus is disclosed which is tough against disturbing noise and superior in the S/N ratio and can cope with an increase of the capacity of a recording medium. A first playback amplifier for amplifying a playback signal of an MR head and a register circuit for setting a bias current to the MR head are formed as a COS IC. The COS IC is mounted on a suspension together with the MR head. A feeble playback signal outputted from the MR head is amplified by the first playback amplifier once and then transmitted to a mother IC over a pair of signal lines. The amplified playback signal is tough against disturbing noise during transmission.
Claims12
A head apparatus, comprising:
- a support section for supporting a head section;
- a playback amplifier mounted on said support section for amplifying a playback signal outputted from said head section;
- a circuit section mounted on said support section for setting a bias current for said head section;
- a signal processing system provided outside said support section;
- and
- a transmission line for transmitting read data outputted from said playback amplifier to said signal processing system and transmitting serial data from said signal processing system to said circuit section.
A hard disk apparatus, comprising:
- a hard disk;
- and
- a head apparatus including a head section for recording and playing back information onto and from said hard disk;
- said head apparatus further including a support section for supporting said head section, a playback amplifier mounted on said support section for amplifying a playback signal outputted from said head section, a circuit section mounted on said support section for setting a bias current for said head section, a signal processing system provided outside said support section, and a transmission line for transmitting read data outputted from said playback amplifier to said signal processing system and transmitting serial data from said signal processing system to said circuit section.
A recording and playback apparatus, comprising:
- a head apparatus including a head section for recording and playing back information onto and from a recording medium;
- said head apparatus further including a support section for supporting said head section, a playback amplifier mounted on said support section for amplifying a playback signal outputted from said head section, a circuit section mounted on said support section for setting a bias current for said head section, a signal processing system provided outside said support section, and a transmission line for transmitting read data outputted from said playback amplifier to said signal processing system and transmitting serial data from said signal processing system to said circuit section.
Dependencies are inferred from the claim text.