# US 2008/0186625 A1 · Data Storage Medium and Method for Accessing Digital Data Therein

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- Number: US 2008/0186625 A1
- Document ID: US20080186625A1
- Status: Published application
- Kind: A1
- Application number: 11/672,216
- Filed: 2007-02-07
- Published: 2008-08-07
- Earliest claimed: 2007-02-07
- Inventors: Ching-Hsi Yang
- Web page: https://patentgrep.com/patent/US20080186625A1

## CPC

- G11B 5/02: Recording, reproducing, or erasing methods; Read, write or erase circuits therefor
- G11B 5/74: Record carriers characterised by the form, e.g. sheet shaped to wrap around a drum
- G11B 2005/0002: {Special dispositions or recording techniques}
- G11B: INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER (recording measured values in a way that does not require playback through a transducer G01D9/00; recording or playback apparatus using mechanically marked tape, e.g. punched paper tape, or using unit records, e.g. punched or magnetically marked cards G06K; transferring data from one type of record carrier to another G06K1/18; circuits for coupling output of reproducer to radio receiver H04B1/20; gramophone pick-ups or like acoustic electromechanical transducers or circuits therefor H04R)

## Abstract

A data storage medium is described. The data storage medium may comprise a first bit of magnetic medium for a first read-and-write head, and further comprise a second bit of magnetic medium. The second bit of magnetic medium, below the first bit of magnetic medium, may be for a second read-and-write head.

## Claims

### Claim 1

A data storage medium, comprising:
a first bit of magnetic medium for a first read-and-write head; and
a second bit of magnetic medium, below the first bit of magnetic medium, for a second read-and-write head.

### Claim 2 (depends on 1)

The data storage medium of claim 1, wherein the second bit of magnetic medium has a magnetic field.

### Claim 3 (depends on 2)

The data storage medium of claim 2, wherein the magnetic field is detected through the second read-and-write head.

### Claim 4 (depends on 3)

The data storage medium of claim 3, wherein the second read-and-write head is below the second bit of magnetic medium and the first bit of magnetic medium.

### Claim 5 (depends on 2)

The data storage medium of claim 2, wherein second the read-and-write head is aligned with the magnetic field of the second bit of magnetic medium.

### Claim 6

A data storage medium, comprising:
a first bit of magnetic medium for a read-and-write head to access a first digital data; and
a second bit of magnetic medium, below the first bit of magnetic medium, for the read-and-write head to access a second digital data.

### Claim 7 (depends on 6)

The data storage medium of claim 6, wherein the second bit of magnetic medium is partially wrapped in an electrically conductive coil.

### Claim 8 (depends on 7)

The data storage medium of claim 7, wherein the second bit of magnetic medium has a magnetic field.

### Claim 9 (depends on 8)

The data storage medium of claim 8, wherein the magnetic field is for indicating the second digital data.

### Claim 10 (depends on 9)

The data storage medium of claim 9, wherein the electrically conductive coil is for the detecting the magnetic field.

### Claim 11 (depends on 8)

The data storage medium of claim 8, wherein the read-and-write head is aligned with the magnetic field of the second bit of magnetic medium.

### Claim 12

An accessing method, comprising:
accessing a digital data stored in one bit of magnetic medium below another bit of magnetic medium.

### Claim 13 (depends on 12)

The accessing method of claim 12, wherein the digital data is indicated by a magnetic field of the one bit of magnetic medium.

### Claim 14 (depends on 13)

The accessing method of claim 13, wherein the magnetic field is detected through a read-and-write head.

### Claim 15 (depends on 13)

The accessing method of claim 13, wherein the magnetic field is detected through a read-and-write head and an electrically conductive coil partially wrapping the one bit of magnetic medium.

### Claim 16 (depends on 14)

The accessing method of claim 14, wherein the read-and-write head is below the one bit of magnetic medium and the another bit of magnetic medium.

### Claim 17 (depends on 16)

The accessing method of claim 16, wherein the read-and-write head is aligned with the magnetic field of the one bit of magnetic medium.

### Claim 18 (depends on 15)

The accessing method of claim 15, wherein the read-and-write head is aligned with the magnetic field of the one bit of magnetic medium.