DE4218420A1 - Recording and reproducing method for concentric or parallel track computer disc - using multiple heads in radial carriers permanently positioned above tracks - Google Patents

Abstract

A parallel track recording system for hard discs used as mass storage in computer system has multiple heads permanently positioned above the tracks. The heads are mounted in radial supports that can be spaced at 90, 120 or 180 degree intervals. The disc controller can generate signals to allow the heads to be switched on a track by track basis. The height of the heads above the disc is accurately controlled using a piezo regulating unit. ADVANTAGE - Eliminates head positioning time for rapid access.

Description

Scope of application:

Field of application of the method developed by me with the Process name "parallel track recording" or short Called "PTR" lies particularly in computer technology.

Patent application:

The patent application relates to the one explained below Process as well as the necessary control around computer data on electromagnetic data carriers or a comparison recordable medium in this form and read it again. This also includes laser techniques such. B. Opticaldisk, the could use this procedure.

Global Declaration of Development:

The writing / reading process developed and documented by me for mass storage (hard drive) in addition to mine shown and explained electronic control unit (Head Switch Controlling) allows the slowest than ever Functional area of the computer, the hard disk, using "PTR" one of the fastest data transfer areas within repurpose the computer architecture.

For this purpose, I developed a new read / write head system for the Mass storage developed.

All major standards can be almost maintained will.

The advantages of development:

"PTR" allows compared to previous hard disk technology almost time-free access to even the largest data to take lots of hard drives. Any head positioning time conventional hard disks are completely eliminated.

The data transfer rates to be achieved by "PTR" in verbin with a controller matched to this technology as well a 32 bit system bus architecture, as it already is prevails in the latest PC’s, surpasses all known so far systems and commercially available.  

Economic benefits:

The economic benefit of a computer equipped with such a mass storage device, no matter whether main frame, mini, Super Mini or simple PC takes on a new dimension due to the extremely fast access times, even on largest amounts of data.

Sorting files e.g. B. the hours previously used, are processed by "PTR" in a few seconds.

Process / principle of development:

Contrary to conventional hard disk technology, "PTR" pro Track the hard drive one or more read / write heads Available. These are mechanically one after the other from track to track the arranged, so that contrary to previous techniques none The head must be positioned (see plan 001).

Exactly these mechanical positioning steps of the individual The head of conventional hard drives make up the total Time behavior of such a drive plus controller loss ste.

A hard disk with 100 tracks per data carrier receives ent speaking 100 or more read / write heads that become a head carrier unit can be summarized (see plan 001, 003, 004).

Design types:

Such a unit can e.g. B. at 90 °, 120 ° or 180 ° in repeated form arranged around the disk and in several levels can be built up (see plan 001, 002).

The known FM or MFM recording methods can be used continue to be used.

The track / sector writing method of conventional techniques e.g. B. under MS DOS it can be fully adopted.

A better solution is to describe them Hard disk, similar to addressing a main memory Computers.

This means a complete replacement of the previous memory called "RAM" through such a medium. An addressing on this way allows absolute performance utilization this technique.  

Particularities:

"PTR" allows simultaneous writing and reading of Data from one or even all traces of the data carrier. It is possible to read and write at the same time while writing correct.

The access control to the data of the hard disks can be known methods, e.g. B. as with MS DOS, about the Filealloca tiontable can be controlled.

The organization of track skewing and cylinder skewing must can be reorganized via "PTR" controllers.

Contrary to the conventional hard disk controllers that the electromechanical positioning of the head of the hard disk to carry out the "PTR" via the head switch control ler the electronic switching of the heads for access on the corresponding tracks and their data (see plan 002).

Access control is via the "PTR" controller carried out in a completely new way of organization.

The logical control sequence takes place, as already mentioned, about this controller. He knows every physical position of everyone files on the hard disk and takes over the head switching (head / track switching), so that none Positioning times arise.

Head height control to disk:

To the high mechanical precision of such a head carrier realize and this also inexpensive, it makes sense fully use electronic control technology. The head height positioning to the head carrier data carrier units or the individual heads can, for. B. via a piezokera mixing control system, so that the head distance to the data carriers are kept electronically at all times via a control loop becomes.  

For this purpose, "PTR" places a special control track on the Written disk and by measuring the reading level Head unit over this piezoceramic element constantly like this controlled that an optimal FM level and thus the ideal Head distance to the disk is achieved.

Other methods can also be introduced for this (see Plan 006 Magnetic Head Height Control).

Head landings can at least be shown in plan 005 th head unit avoided by a mechanical lock the.

Mechanical construction examples:

The structure of the head support unit can be used as a composite system for all Heads, cast in the carrier material, or as individually mounted suspended heads can be designed on a carrier guide (see plan 005, 006).

The most diverse, mechanical Present variants that ultimately all of the Use the "PTR" procedure.

Such a head support unit (plan 005) should be in glass ferrite Find embedding. The head mirror of such a head carrier unit requires high manufacturing accuracy.

However, conventional techniques can be used for this.

The detailing at this point of mechanical components is insignificant for the functioning of "PTR", as modern Today head technologies can do much more than it can for "PTR" is necessary.

Principle representation of "PTR" using the example of a 120 ° head carrier Compound unit: See plan 007.  

Final explanation:

It is relatively easy to imagine the volume of data a hard drive with z. B. 1 gigabyte capacity with "PTR", already with a 360 degree rotation of the data carrier to the CPU via the bus system or via DMA can.

It is also clear that "PTR" is one on this read / write process matched controller needed to be revolutionary Data transfer services for conventional computer technology too achieve.

In short, "PTR" offers besides the techniques explained here in interaction with computer components completely new perspectives current computer technology.

The following constructions belong to this technical documentation tion drawings: Plan: 001 to 007.

Claims (3)

1. A method for writing and reading information in or from concentric or parallel tracks on a recording medium, during a relative movement between the recording medium and the writing or reading device, characterized in that the number of in the writing or Readers arranged heads matches the number of tracks on the label and that each track is assigned a readout head. 2. The method according to claim 1, characterized in that the Operational readiness of the heads electronically on and off is switchable. 3. The method according to claim 2, characterized in that the Distance between the heads and the record carrier over a piezoceramic control system is controlled.