Home | Links | Contact Us | More About Intellectual Property | Bookmark

Search patents:

Home

TV Signal

Method-and-device-for-superposing-a-modifiable-magnetic-code-on-a-fixed-bar-code

System for monitoring and reporting viewing of television programming

The invention is directed to a system for monitoring and reporting the viewing of television ...

Method for fabricating and inspecting coatings

What is claimed is: 1. A method for inspecting a non homogenous coating comprised of a metal ...

Method for manufacturing liquid crystal device with spacers formed by photolithography

It is therefore an object of the present invention to provide a liquid crystal device with no color ...

Liquid crystal display

OF THE INVENTION Spacer particles each having at least on the surface thereof a nonionic ...

Thermal transfer image-receiving sheet

OF THE INVENTION The present invention will now be described in more detail with reference to the ...

Method of forming color images by electrophotographic process employing a peelable transfer layer having a stratified structure

OF THE INVENTION The method of forming a color image by an electrophotographic process according ...

Positive working photosensitive lithographic printing plate

OF THE INVENTION The polymer which can be used in the intermediate layer comprises (A) a unit ...

Electrophotographic apparatus and method for producing printing masters

These and other objects of the invention are achieved by providing an integrated ...

Layered electrophotographic imaging element, apparatus and method sensitive to gallium arsenide laser, the element including two charge generation layers and a polycarbonate adhesive layer

What is claimed is: 1. A layered electrophotographic imaging element, having a spectral sensitivity ...

High resolution optical lithography method and apparatus having excimer laser light source and stimulated Raman shifting

It is, therefore, the principal object of this invention to provide an optical lithography method ...

Method and device for superposing a modifiable magnetic code on a fixed bar code

Details

Inventors: Jacoub, Michel; Nourigat, Gerard;
Assignee: Compagnie Generale d'Automatisme (Paris, FR)
Primary Examiner: Cook; Daryl W.
Assistant Examiner:
Attorney, Agent or Firm: Sughrue, Rothwell, Mion, Zinn and Macpeak

The invention relates to magnetic recording. A method of superposing a modifiable magnetic code on a fixed bar code magnetizes the bars in two different directions by means of a write head. There is the provision for synchronising the application of write signals to the write head with the passage of the bars of the bar code and the system may include a bar code reading head which reads a code moved by a conveyor belt and which causes an image of the bar code to be stored in a shift register with each bar and each space of the bar code being represented by several successive 1's or 0's. The write head then includes a read winding which triggers (via) reading of the image, and the image is gated into a code generator that writes when an image bar is present thereby writing magnetically onto the real bars of the bar code.

DETAILED DESCRIPTION We claim: 1.
A method of coding comprising the step of superposing a modifiable magnetic code on a fixed code consituted by a succession of magnetized bars separated from one another by spaces, wherein said step of superposing a modifiable magnetic code on a fixed code comprises the step of magnetizing the bars in two different directions by a write head.
2.
A method according to claim 1, wherein each bar of the succession of bars is magnetized in only one of said two directions, one of the two magnetization directions representing one of the two values of a binary variable and the other direction representing the other value of the variable.
3.
A method according to claim 1, wherein each bar of the succession of bars is divided into two zones, one of which is magnetized in one of said two directions and the other of which is magnetized in the other of said two directions, the order in which these two magnetization directions succeed one another on a single bar determining the binary value of the bar in the modifiable magnetic code.
4.
A method acording to claim 1, wherein one of the two binary values of the modifiable magnetic code is represented by a bar magnetized in a single direction, while the other binary value is represented by a bar divided into two zones magnetized in opposite directions from each other.
5.
Apparatus for superposing a modifiable magnetic code on a fixed bar code constituted by a succession of magnetized bars separated from one another by spaces, comprising the step of magnetizing the bars in two different directions by a write head, said apparatus comprising first and second magnetic heads, means for causing relative movement of the bar code supporting medium and the heads in such a manner that the bar code moves firstly past the first head and secondly past the second head, said first head including means responsive to the bar code to store an image thereof said second head including first means responsive to the bar code to cause the stored image thereof to be read in synchronism with the passage of the bar code past the second head and second means responsive to the synchronously read image to write a modifiable magnetic code message on the bars of the bar code

Related patents

	Recording/reproducing apparatus Accordingly, it is an object of the present invention to provide a recording/reproducing apparatus which avoids the above-mentioned problems encountered with the prior ...
	High speed contact printing system With the above-described drawbacks in mind, it is an object of the present invention to provide a system for printing signals from a master tape onto a slave tape, and ...
	High speed information retrieval apparatus The present invention has been proposed to eliminate problems of the above-described approach. Therefore, it is an object of the present invention to provide an ...
	Recording apparatus with switch actuated memory storage of recording medium removal or loading and backup power supply for memory A first object of the present invention is to provide a recording apparatus which has improved the above-described points. A second object is to provide a recording ...
	HDTV encoder with forward estimation and constant rate motion vectors The motion estimation principles of this invention start with the proposition that for a given bit budget, a much better overall prediction error level can be attained ...
	Semiconductor integrated circuit capacitor A polyoxide capacitor in accordance with the invention is illustrated in the drawing as part of a CMOS structure. In particular, the CMOS arrangement is of the so-...
	Method of making a capacitor with standard self-aligned gate process According to the present invention a method of making a semiconductor capacitor device is provided comprising the following steps. A semiconducting region of one ...
	Viad chip capacitor and method for making same What is claimed is: 1. A two pole viad chip capacitor that is activatable from either of its sides, comprising: (a) a plurality of ceramic layers in a stack, each and ...
	Apparatus and method for capturing object in TV program OF PREFERRED EMBODIMENT Reference will now be made in detail to the preferred embodiments of the present invention, examples of which are illustrated in the ...
	RF receiver using if amplifier operative during low level reception It is therefore an object of the present invention to provide a radio-frequency receiver capable of compensating for varying levels of a received signal. According to ...

0.014
Archive: All patents - Links Copyright (c)2006 Eipa-patents.org - All rights reserved