Abstract: The present invention discloses a surface treatment agent comprising: (A) an acrylic resin having a hydrolysable silyl group, a hydroxyl group and a polysiloxane chain; (B) an organopolysiloxane having a hydrolysable silyl group; and (C) an organopolysiloxane not having a hydrolysable silyl group.

Abstract: An image forming device prints out a data file including a data body, which is printed out, and additional data, which is not printed out. The additional data includes at least authentication data. The image forming device includes an identification entry unit, an operator authentication unit, and a print execution unit. The identification entry unit accepts an entry of the identification data of an operator. The operator authentication unit authenticates the identification data of the operator by the authentication data of the data file. The print execution unit prints out result data, according to whether the authenticated identification data is appropriate or inappropriate, along with the data body of the data file.

Abstract: An entangled photon pair generating apparatus has a first definite polarization photon pair generating apparatus for generating a first definite polarization photon pair beam according to an incident pump beam, a wave plate for rotating by 90 degrees a plane of polarization of the first definite polarization photon pair beam emitted from the first definite polarization photon pair generating apparatus, and a second definite polarization photon pair generating apparatus for generating a second definite polarization photon pair beam according to the incident pump beam. They are adjacently placed in order along an optical axis of the incident pump beam.

Abstract: An e-mail terminal device capable of carrying out a printing process, a storing process or the like of only e-mail with a signature or only e-mail with a signature of a trustable Certificate Authority (CA). When receiving e-mail, a determination is made as to whether or not the e-mail requires a signature. When the e-mail requires a signature, a determination is made as to a presence or an absence of the signature, whether or not a verification result of the signature is proper, and whether or not a CA issuing a public key used for the verification of the signature is trustable. When a signature is not attached, when the signature is improper, or when the CA is untrustable, the printing process is not executed. E-mail requesting retransmission of e-mail with a signature or e-mail signed by a secret key of a trustable CA is transmitted to a transmitter.

Abstract: The present invention provides a highly reliable e-mail communication device capable of monitoring validity of a certificate of the e-mail communication device itself. The e-mail communication device includes a certificate storage unit which stores a certificate of the e-mail communication device itself, a signature unit which adds a digital signature to e-mail by using the certificate, a transmission unit which transmits the e-mail, and a monitor unit which monitors validity of the certificate.

Abstract: The apparatus includes a photon pair source for generating a photon pair that contains a signal photon and an idler photon and correlates with the generating time, photon detectors for detecting a incidence of idler photons, a clock generator, a gate device controller for generating signals for opening or closing a gate device in a frequency lowering a specific number of times within a specified time defined by the clock, and a gate device for opening or closing the gate in response to the signals from the gate device controller.

Abstract: A cipher mail server device includes a mail receiving unit, a management table, a determination unit and a processing unit. The mail receiving unit receives mail. The management table stores mail processing information indicating a processing content of mail for each account by associating with each account. The determination unit accesses to the management table when the mail receiving unit receives the mail, acquires the mail processing information associated with an account of a destination of the mail, and determines a processing content for the mail. The processing unit executes the processing content determined by the determination unit on the mail.

Abstract: An apparatus for generating a specified number of photons whose generating time is known, and further an apparatus for generating a specified number of photons in the known schedule are provided. The particularly important specified number is 1 and it is able to be applied to quantum cryptographic communication. The apparatus comprises a photon pair source for generating a photon pair that comprises a signal photon and an idler photon and correlates with the generating time, photon number detectors for detecting the photon number of idler photons, a controller for controlling the gate device in conformity with the information on the photon number form the photon number detector, and a gate device for controlling the emission of the signal photon.

Abstract: An encryption device which enables a client not having an encryption function to easily use a function of encrypted mail without carrying out a management of certification and a key and an encryption and a decryption. When an Internet facsimile machine transmits electronic mail to an encryption device, the encryption device converts the received electronic mail into encrypted mail and transmits to a mail server. When another Internet facsimile machine transmits data including a part to be encrypted and transmission destination information as a main body of mail to an encryption and decryption I/F of the encryption device, the encryption device encrypts the main body of the received mail under a prescribed encryption method and sends back to the other Internet facsimile machine. Accordingly, the other Internet facsimile machine can format encrypted data into encrypted mail and transmit to a remote Internet facsimile machine.

Abstract: A communication terminal device includes a registered information storage area, an address information acquiring unit, and a display unit. A directory server includes a database which stores address information including a plurality of attributes and item names of the attributes by associating to one another. From the database, the address information acquiring unit acquires the address information retrieved in accordance with the retrieval condition, and the item name. A correspondence table storage area stores a communication method and an item name by associating to one another. A detecting unit refers to the correspondence table storage area with the item name as the key and detects the attribute corresponding to the destination of the communication from the attributes included in the address information acquired by the address information acquiring unit. A display processing unit displays the attribute detected by the detecting unit.

Abstract: An entangled photon pair generating apparatus has a first definite polarization photon pair generating apparatus for generating a first definite polarization photon pair beam according to an incident pump beam, a wave plate for rotating by 90 degrees a plane of polarization of the first definite polarization photon pair beam emitted from the first definite polarization photon pair generating apparatus, and a second definite polarization photon pair generating apparatus for generating a second definite polarization photon pair beam according to the incident pump beam. They are adjacently placed in order along an optical axis of the incident pump beam.

Abstract: A quantum-cryptographic communication system for quantum-cryptographic communication in an optical network. The system comprises a transmitter for transmitting a packet signal having at least a light pulse train representing an address and a single photon pulse train used for quantum cryptography, and a router including a header analyzer for extracting the address information in the light pulse train from the packet signal and a gate switch for selecting one of optical fibers. The router routes the packet signal by selecting an optical fiber used for the next transmission path according to the extracted address information by the header analyzer and by switching the path to the selected optical fiber by the gate switch.

Abstract: A small-sized, inexpensive optical pickup apparatus can be assembled with high accuracy. The optical pickup apparatus has a various-purpose semiconductor laser, an integrated optical assembly for guiding outgoing light to an optical disk and for separating reflected light, a light receiver for receiving light and converting the received light into an electrical signal, and a coupling member for retaining a positional relationship among the various-purpose semiconductor laser, the integrated optical assembly, and the light receiver. By using a various-purpose semiconductor laser, the optical pickup apparatus can be made in a small size at low cost, and can be accurately assembled. The apparatus is also capable of accurately and efficiently detecting the optical power of the various-purpose semiconductor laser.

Abstract: A hierarchical processing apparatus and method for video and audio data for producing, modifying or deleting a playlist formed from information of reproduction times, channels and so forth of programs in the form of video and audio data is disclosed. The hierarchical processing apparatus includes an image of a first hierarchy for displaying a plurality of playlists formed from a plurality of clips which are video and audio data and additional information corresponding to the clips in a list and selecting one of the playlists to determine a playlist of an object of modification or a playlist of an object of deletion, and an image of a second hierarchy for selecting one of the plurality of clips and adding, to the selected clip, corresponding additional information to produce or modify the playlist. The image of the first hierarchy and the image of the second hierarchy allow transition therebetween in a series of operations.

Abstract: A video-audio data processor for editing encoded video-audio data of plural programs to form a serial program and then outputting the same. The processor comprises an encoder for encoding the reproduced video-audio data of each program and recording such data temporarily in a recording means; a play-out section for recording the encoded data temporarily in another recording means and then outputting the encoded data; a recording means selector for calculating the quantity of the encoded data while calculating also the remaining recording capacities of the plural recording means, and selecting one recording means, where the encoded data are to be recorded, in accordance with the data quantity and the remaining recording capacities; and a display unit for displaying the remaining recording capacities of the recording means detected by the recording means selector.

Abstract: A photon beam generating apparatus comprises an incident pump beam generation section 1 and a photon pair generation section including a non-linear optical medium 3. The angle between the optical axis of the medium 3 and an incident pump beam is set to a value such that tuning curves become tangent to a line corresponding to a wavelength a in order to generate two photon beams including paired photons generated simultaneously and having a wavelength a. Another photon beam generating apparatus comprises an incident pump beam generation section 1 and a photon pair generation section including a non-linear optical medium 3. The angle between the optical axis of the medium 3 and the incident pump beam is set to a value such that tuning curves become tangent to different lines corresponding to wavelengths a and b respectively, in order to generate two photon beams including paired photons generated simultaneously and having wavelengths a and b respectively.

Abstract: A small-sized, inexpensive optical pickup apparatus can be assembled with high accuracy. The optical pickup apparatus has a various-purpose semiconductor laser, an integrated optical assembly for guiding outgoing light to an optical disk and for separating reflected light, a light receiver for receiving light and converting the received light into an electrical signal, and a coupling member for retaining a positional relationship among the various-purpose semiconductor laser, the integrated optical assembly, and the light receiver. By using a various-purpose semiconductor laser, the optical pickup apparatus can be made in a small size at low cost, and can be accurately assembled. The apparatus is also capable of accurately and efficiently detecting the optical power of the various-purpose semiconductor laser.

Abstract: An image scanning device including a flat bed, a cover for the scanning table, a scanning portion, a carriage for supporting the scanning portion, an automatic document feeder (ADF), a detector for detecting a communication control signal from a remote communication device, and a controller. Upon detecting of the communication control signal (e.g. DIS signal), the controller causes the carriage to move from a stand-by position to either a scanning start position of the ADF, or a scanning start position for scanning a document placed on the flat bed, depending on whether a document is present or not present at the ADF. The time required between the user's pressing the start key and the start of the scanning is reduced.

Abstract: An image scanner arrangement having a scanner, a document feeder scanning portion and a flat scanning bed. A single white plate is provided between the document feeder scanning portion and flat bed. Before scanning, the scanner scans the white plate to provide image data for testing. If this image data contains white pixels not less than 90%, a controller determines that a lamp of a light source of the scanner illuminates appropriately. After confirming that the light source is in a good condition, the scanning starts. The single white plate is utilized regardless of scanning being performed with the document feeder scanning portion or the flat scanning bed.

Abstract: In an optical pickup, light, emitted from a light-emitting element, is transmitted through a first beam splitter film with polarization selectivity, and a zero-order diffraction beam and two (.+-.) first order diffraction beams are produced. These beams are applied in a condensed manner to an optical disk through a condensing element, and the return light beam from the optical disk is fed to a photodetector through a second beam splitter film with polarization selectivity, thereby effecting the recording and reproduction of information, the tracking and the focusing. A diffusion angle conversion hologram is provided between the light-emitting element and the first beam splitter film, and with respect to the diffusion angle conversion hologram, the relation between the diffusion angle of the incident beam and the diffusion angle of the outgoing beam is specified.