Nippon Conlux Co., Ltd.

Kenzou Yoshihara

Koichi Yamazaki

Kazuo Noda

Shinichi Machida

Takayuki Kojima

Toshio Osawa

A position detector detects a relative position of an optical head to a recording medium, and on the basis of the thus-detected relative position, a position detection signal is generated in response to movement of a light beam over a predetermined distance. Then, in response to the position detection signal, a comparison is made between the number of track crossing counted for the predetermined movement distance on the basis of reception of reflection of the light beam, and a predetermined reference value for the predetermined movement distance. Then, track crossing count compensation data is generated which corresponds to a difference between the counted number of track crossing and the reference value, and the counted number of track crossing is corrected by use of such compensation data.

Track seek method and device for use with an optical information

Data produced from a transmission source facsimile are received by a simulated communication circuit network, and thus received data are compressed and temporarily stored into a memory. After the data have been compressed, the data stored in the memory are read out and transmitted to an other party's facsimile via an external communication circuit network. Since the data transmitted to the other party's facsimile via the external communication circuit network are compressed data, a time required for transmission can be relatively shortened. Accordingly, a rapid data transmission can be achieved without the facsimile being replaced by a rapid type facsimile which is expensive. Further, various additional functions of a facsimile can be directly enjoyed from those intrinsically owned by the transmission source facsimile. In addition, such arrangements may be made that a time presumably required for communication via the simulated communication circuit network is measured as a presumed time of communication in the normal transmission mode, while an actual time of communication in which a rapid transmission has been done by means of highly compressed data is measured, and that both the presumed communication time and the actual communication time are notified to the user so that the user can realize having saved the communication cost by means of the transmission involving data compression.

Adaptor device for a facsimile

This card type recording medium has plural types of inks which normally exhibit the same color visually but exhibit different optical characteristics under a predetermined condition provided in blocks in a desired pattern and, by breaking the blocks block by block in accordance with the used amount or other factor, is capable of recording information corresponding to the breakage state of the blocks. First information can be recorded by a pattern of arrangement of these plural types of inks and second information can be recorded in accordance with the breakage state of the blocks. The first information is a collation pattern which indicates that the card type recording medium is a genuine one. Since the plural types of inks exhibit the same color visually, it cannot be visually discerned which type of ink is used on which block, which makes it difficult to counterfeit the card by imitating this collation pattern. Besides, sicne the ink arrangement pattern cannot be visually discerned, it is difficult to repair punched holes of broken blocks by using the ink used in forming this ink arrangement pattern so that false alteration of the second information can be prevented.

Card type recording medium and method of preventing a false use thereof

This card type recording medium has plural types of inks which normally exhibit the same color visually but exhibit different optical characteristics under a predetermined condition provided in blocks in a desired pattern and, by breaking the blocks block by block in accordance with the used amount or other factor, is capable of recording information corresponding to the breakage state of the blocks. First information can be recorded by a pattern of arrangement of these plural types of inks and second information can be recorded in accordance with the breakage state of the blocks. The first information is a collation pattern which indicates that the card type recording medium is a genuine one. Since the plural types of inks exhibit the same color visually, it cannot be visually discerned which type of ink is used on which block, which makes it difficult to counterfeit the card by imitating this collation pattern. Besides, since the ink arrangement pattern cannot be visually discerned, it is difficult to repair punched holes of broken blocks by using the ink used in forming this ink arrangement pattern so that false alteration of the second information can be prevented.

System for preventing a false use of a card type recording medium and a

An apparatus for discriminating the authenticity of a bill put into an automatic vending machine, etc. on the basis of a degree of brilliance of a surface of the bill, comprises two photodiodes for receiving light irradiated from a light-emitting diode and reflected by the bill, and a polaroid filter disposed in front of one of the photodiodes. A differential amplifier or a divider is supplied with output currents from the photodiodes, respectively representing an amount of the reflected light received not through the polaroid filter and containing a polarized component which is produced when the light is reflected on the surface of the bill, and an amount of the reflected light, received through the filter and containing no polarized component, and generates an output voltage indicative of the difference between or the ratio of the output currents, which voltage is compared with a corresponding reference voltage in a comparator whose output assumes a Low-level for a lusterless authentic bill, and a High-level for a brilliant counterfeit bill obtained by color-copying the authentic bill, whereby the authenticity of the bill is accurately discriminated.

Growing community of inventors

Kounosu, Japan

Kenzou Yoshihara