Abstract: A data processing apparatus runs a messaging and queuing software package whereby messages received at the data processing apparatus are stored in a message queue. The apparatus has: a processor; a high storage capacity storage device; and a low storage capacity storage device (e.g., a high-speed cache); the high storage capacity storage device stores full-length expiration data for each message in the message queue; and the low storage capacity storage device stores an abbreviated version of the full-length expiration data for each message in the message queue, the abbreviated version used to quickly and efficiently determine whether a queued message is expired.

Abstract: A concurrency control mechanism for a client/server computing system analyzes each client request to determine whether it can be given concurrent access to a server's resources, along with other client requests which are presently accessing the server's resources. Each client request triggers the setting up of a lock request mode which contains conflict resolution logic based on the particulars of the corresponding request. When a new request comes in, the new request's newly created lock request mode is compared to the lock request modes of the previous requests which are currently accessing the server's resources and the conflict resolution logic is carried out to determine whether the new request should be also allowed access.

Abstract: An apparatus for dispatching client requests within a server computer system, wherein the client requests are issued from at least one client computer system on a different platform from said server computer system and are passed through a communications channel to said server computer system, the apparatus comprising: a buffer having an input connected to said communications channel and an output; a plurality of parallel execution threads connected to said output of said buffer; and a scheduling means for distributing client requests stored in said buffer to said plurality of execution threads in a manner such that related client requests are sent to the same execution thread.

Abstract: A broadcast receiver is disclosed which separates 16-bit binary program labels from a transmitted television signal and applies the television signal to a recorder. The viewer enters, via a keyboard, short program labels which up to three decimal digits in length. These entered short labels are then converted into 16-bit binary program codes by a mapping function processor. Each of the 16-bit codes differs in at least two binary positions from any other 16-bit codes. These codes are stored and compared with received codes and when they agree the video recorder is controlled so as to record the TV signal. Thus, the viewer does not have to enter long codes but can use short labels to identify the programs. The short labels can be obtained by the viewer from a printed TV listing.

Abstract: An active noise and vibration control system is constructed such that the residual signal from the residual sensor is fed back into the controller and used to generate the probe signal. Measurements of the residual signal are used to create a related signal, which has the same magnitude spectrum as the residual signal, but which is phase-uncorrelated with the residual signal. This latter signal is filtered by a shaping filter and attenuated to produce the desired probe signal. The characteristics of the shaping filter and the attenuator are chosen such that when the probe signal is filtered by the plant transfer function, its contribution to the magnitude spectrum of the residual signal is uniformly below the measured magnitude spectrum of the residual by a prescribed amount (for example, 6 dB) over the entire involved frequency range. The probe signal is then used to obtain a current estimate of the plant transfer function.

Abstract: User-selection of a data value within a range of data values is permitted via a graphical user interface of a computer. A user command is received to move a presently displayed value forward or backward within the range. An acceleration table is accessed based on the length of time the user has issued the command to obtain an index value which is then used to access a second table to obtain a delta value corresponding to the index value. The presently displayed value is then changed based on this delta value.

Abstract: A magnetic recording medium having a recording layer made up of a ferrimagnetic material whose compensation temperature is included within room temperatures and an information recording-reproduction method using the magnetic recording medium. During recording, while a light beam is projected on the recording layer so as to raise the temperature of a recording portion, information is recorded by applying a signal magnetic field from a magnetic head. During reproduction, while a light beam is projected on a reproducing portion of the recording layer so as to raise the temperature thereof, information is reproduced by detecting leakage flux from the reproducing portion by the magnetic head. Thus, during reproduction, no magnetic flux is generated from other portions of the recording layer not irradiated by the light beam. With the arrangement, crosstalk due to leakage flux from adjoining tracks not irradiated by the optical beam can be eliminated.

Abstract: A photomodulation element which uses a color variable filter to obtain the light of a desired wavelength and a liquid crystal element. Light entering the photomodulation element from one side passes through the liquid crystal panel and a second polarizer. The distribution of the transmission light intensity about the wavelength is nearly close to the normal distribution centered on a specific wavelength determined on the basis of the retardation of the liquid crystal panel. Based on the half-value width W necessary in this distribution, the retardation of the panel is determined and the number of the liquid crystal elements is determined so as to obtain a bandwidth which corresponds to the color of the light desired. The retardation of the light crystal is changed by a voltage regulating circuit so that the transmission light intensity distribution at the wavelength of the transmission light of the liquid crystal element is maximized at the desired wavelength .lambda.

Abstract: High definition television coder/decoder a high definition coder or decoder includes a number of parallel sub-decoders or coders. The image to be coded or decoded is divided into a number of stripes, a given stripe being coded or decoded by a single sub-coder or sub-decoder. Every N.sup.th stripe is coded or decoded by the same sub-coder/sub-decoder, where N is the number of sub-coders or sub-decoders. The number of sub-coders is independent of the number of sub-decoders whereby a reduction in the number of sub-coders with increasing bit-rate capacity does not necessitate a change in decoder.

Abstract: A transport path is branched into a main pass and a bypass. A deflector is provided at a branch point, for switching the path either to the bypass or to the main pass. Sheet detection switches are respectively provided along the bypass and the main pass, and also on a stapler plate, for controlling the rotation of a transfer roller. In this way, a first sheet being transported through the main pass and a second sheet being transported through the bypass can be discharged onto the stapler plate at the same time. As a result, the problem of the device being made larger or reducing the quality of the sheets can be prevented, and a faster process after copying can be achieved.

Abstract: An image-forming method using a latent-image forming body which consists of a transparent electrode layer, a photoconductive layer, an electrode layer and a pyroelectric-material layer made of a dielectric substance that are successively stacked on its transparent base. In this method, conductive carriers are generated in the photoconductive layer by irradiating information light thereto by using a light source that is placed at a location opposite to the transparent base. Then, heat is exerted at the light-irradiation portion of the photoconductive layer by applying a voltage across the transparent electrode layer and the electrode layer, and the heat causes a temperature rise in the pyroelectric-material layer such that an electrostatic latent image is formed by the pyroelectric effect. The electrostatic latent image is developed by allowing the developer, charged to have the polarity reversed to that of the electrostatic latent image, to be attracted by the electrostatic latent image.

Abstract: A display-integrated type tablet device provided with a liquid crystal display panel has a mode detection circuit. During the display period, the circuit receives electrostatically induced voltages developed on a detection pen and compares the received electrostatically induced voltage with a previously set reference voltage. If the electrostatically induced voltage is greater than the reference voltage, the mode detection circuit decides that a coordinate detection mode exists, while if the electrostatically induced voltage is smaller than the reference voltage a non-detection mode is determined.

Abstract: An information recording and reproducing apparatus of the present invention, in which a tunnel current is utilized for recording information to a recording surface of a recording medium and/or for reproducing information from the recording surface, includes a slider which is arranged on the recording surface and floats above the recording surface by an air flow caused by movement of the recording medium. The slider includes a body having a first surface positioned opposite to the recording surface, a second surface parallel to the first surface, and a third surface oblique to the first and second surfaces. The slider further includes a cantilever having a projecting portion projecting from the body so as to be substantially parallel to the recording surface and a tip for detecting the tunnel current formed on a surface of the projecting portion on the side of the recording surface.

Abstract: A composite video signal is formed in which high luminance frequencies are modulated so that they occupy frequencies above the chrominance band. A sub-band coder is used to split the luminance frequency band into high and low frequencies at the coder, and an inverse sub-band coder combines the high-frequency luminance and the chrominance components. The two resultant signals are applied to a phase-segregated Weston Clean PAL coder to provide a composite video signal, which is compatible with a conventional PAL signal.

Abstract: In the invention, toner on a toner carrier is charged with negative polarity and attracted by applying positive voltage to a backing electrode placed at the back of a transfer belt. Voltage is applied across the electrodes arranged crosswise in directions X and Y of the control grid disposed between the transfer belt and the toner is changed so as to vary the toner repulsing force in space-charged opening XY of the control grid and thereby to regulate the amount of toner passing therethrough.

Abstract: Video signals are sampled at 4Fsc locked onto sub-carrier phase and frequency. The active picture lines of each field are divided into 6 blocks of 47 lines and the active line periods of those lines scrambled on a block by block basis by line order shuffling. The shuffling algorithm is generated by a line shuffling permutator driven by a PRBS generator (controls 36, 38). Active line period samples for one block are written in unscrambled form into a first memory block (32) and samples from the previous block are read out in scrambled form from a second memory block (34) for transmission. The complementary process takes place in the decoder.

Abstract: The present invention relates to a projection type liquid crystal display. In a preferred aspect, the projection type liquid crystal display of the invention includes an optical source for generating light, a light dividing unit which divides the light into a first light having a first polarization direction and a second polarization direction and allows the first and second lights to come out in different directions from each other, a pair of reflective liquid crystal display elements formed of a first reflective liquid crystal display element and a second reflective liquid crystal display element with synchronization, a light synthesizing unit for receiving the first light which comes out of the first reflective liquid crystal display element and the second light which comes out of the second reflective liquid crystal display element and synthesizing the first and second lights into image light, and a screen.

Abstract: In an optical disk, since a header section has only one recording section for address information, the capacity of memory where a user can freely record data is increased. In an optical disk drive, four laser beams have a fixed positional relation. Based on the address information of a header section read out by at least one of the laser beams and the positional relation among the laser beams, the address information of tracks being scanned by the other laser beams is obtained. It is therefore possible to accurately record or reproduce information on the optical disk.

Abstract: The light scan type display device includes a display medium laid between two opposed substrates, which is driven in response to a light signal. One of the substrates has plural light waveguides provided in parallel and for transmitting a light signal, plural signal electrodes ranged in parallel and orthogonally with the light waveguides and for transmitting a light signal, pixel electrodes formed in a matrix manner, and light switching elements formed of a photoconductive material at crosspoints between the signal electrodes and the light waveguides in a manner to abut on the signal electrodes and the pixel electrodes. Further, the one substrate includes micro lenses for condensing ambient light to pixel openings. The micro lenses serve to condense the light from the backlight onto the pixels for prevent intrusion of any other light except the light scan signal into the switching element.

Abstract: A translation machine is provided with an idiom registering capability. If a header standing for a idiom contains two or more variable parts, these parts are represented by representative symbols. With this representing method, the idiom is allowed to be easily registered and retrieved. This makes it possible to shorten the registering time, reduce the translating toil and prevent increase of information storage capacity. The translation machine includes an input unit, a storing unit, an output unit, an idiom registering unit, and a translating unit for performing a routine translating operation. The idiom registering unit operates to register an idiom header with two or more representative symbols standing for words or word trains sharing a predetermined attribute.