Abstract: A program information receiving apparatus includes: a search criterion registration section for registering a search criterion necessary for searching through program information for a desired program; a program information acquisition section for acquiring program information; an updated information extraction section for comparing newly acquired program information and existing program information with each other to extract an updated part; a program information search section for searching the updated part for program information based on the search criterion; and a search result output section for outputting a search result when the desired program is found as a result of the search by the program information search section. Thus, a user can monitor not only program information fetched and stored in the receiving apparatus but also program information to be transmitted in the future for a program that the user wants to watch.

Abstract: When the contents of a flash ROM which is an electrically rewritable nonvolatile memory are rewritten, after an IPL program for rewriting stored in the flash ROM is transferred to a RAM, mapping of memory space is switched by a switching control circuit. The IPL program transferred to the RAM is protected. The contents of the flash ROM are erased by use of the IPL program, and an updated program supplied through an RS-232C interface is written into the flash ROM. When a bug is caused due to static electricity in the IPL program stored in the flash ROM, an EPROM which is a nonvolatile memory element is attached, an IPL program stored in the EPROM is executed, and the IPL program stored in the EPROM is directly transferred to the flash ROM.

Abstract: An image processing device for controlling data transfer includes an image scanner, an image printer, a facsimile control unit, bus lines for data transfer, a bidirectional parallel interface unit, and a main CPU in a housing. The device is connected to an external data processing device through the parallel interface unit. In addition to the functions which are obtained independent from the external data processing device, the image processing device realizes various kinds of functions by controlling the image scanner, the image printer facsimile control unit and the interface unit by the main CPU in response to commands from the data processing device. As a result, various kinds of image processing functions are carried out.

Abstract: An image processing device for controlling data transfer includes an image scanner, an image printer, a facsimile control unit, bus lines for data transfer, a bidirectional parallel interface unit, and a main CPU in a housing. The device is connected to an external data processing device through the parallel interface unit. In addition to the functions which are obtained independent from the external data processing device, the image processing device realizes various kinds of functions by controlling the image scanner, the image printer facsimile control unit and the interface unit by the main CPU in response to commands from the data processing device. As a result, various kinds of image processing functions are carried out.

Abstract: A zoom lens comprises, in the order from the object side, a first diverging group of lenses and a second convergent group of lenses. The first and second groups of lenses are movable along the optical axis to effect zooming. The first group comprises, in the order from the object side, a negative meniscus lens having its convex surface faced to the object side, a negative lens and a positive lens having its surface of larger curvature faced to the object side. The second group of lenses comprises, in the order from the object side, a positive lens, a positive lens formed by a single lens or a combination of cemented positive and negative lenses and functioning as an achromatic lens, a negative lens having its surface of larger curvature faced to the image side and a positive lens. The zoom lens satisfies certain conditions.

Abstract: A catadioptric telephoto lens comprises, in the order of processing of light from the object side, a biconvex positive lens component, a first reflecting member, a second reflecting member and a negative lens group. The first reflecting member has a refracting surface concave to the object side and a rear reflecting surface also concave to the object side and is capable of reflecting and converging the light. The second reflecting member is positioned close to and at the image side of said biconvex positive lens component and has a refracting surface convex to the image side and a rear reflecting surface also convex to the image side and is capable of reflecting and diverging the light. The negative lens group is positioned close to said first reflecting member and has at least a positive lens and a negative lens with a synthesized negative refractive power.

Abstract: A focusing screen in a split image coincidence type range finder provided with an objective lens forming an imaging plane comprises a plurality of light diffusing portions each of which has a surface inclined with respect to the imaging plane. A number of minute depressions or projections are formed on the inclined surface. The depressions or projections are arranged in the form of a matrix along a first direction and a second direction intersecting each other and symmetrical with respect to a fixed direction parallel to the inclined surface and the imaging plane. Each of the depressions or projections is of a pyramidic shape having as the base a parallelogram having first and second sides parallel to the first direction and third and fourth sides parallel to the second direction and extended in the fixed direction. Each of the depressions or projections is arranged so that each side of the parallelogram is common to a side of another adjacent parallelogram.

Abstract: A novel reactive disazo dyestuff of which the free acid form is represented by the formula ##STR1## wherein R.sub.1 represents hydrogen or carboxyl, R.sub.1 and R.sub.2 represent hydrogen or sulfo, either one of the R.sub.2 and R.sub.3 being hydrogen and the other being sulfo, and when R.sub.1 is hydrogen, Y represents 2,5-dicarboxy-1,4-phenylene, 5-carboxyl-1,3-phenylene, or 2-carboxy-1,4-phenylene, and when R.sub.1 is carboxyl, Y represents 1,4-phenylene, 1,3-phenylene, or 2-carboxy-1,4-phenylene which dye cellulosic fibers with excellent color-value and build-up property.

Abstract: A focusing screen capable of transmitting light therethrough and disposed between an objective lens and an eye-piece includes a surface formed with a large number of substantially hemispherical faces of irregular sizes disposed irregularly. The radius of curvature of the hemispherical faces is within the range of 8.5 to 52.8 .mu.m and the height thereof is within the range of 1.5 to 3.6 .mu.m.

Abstract: The present invention relates to a process for dyeing cellulose fibers or its union fibers which is effected according to an exhaustion dyeing method using a reactive dye containing at least one s-triazinyl group having a group of the formula: ##STR1## wherein M represents a hydrogen or an alkali metal, in an aqueous dyeing bath having a pH in the range of 4 to 10 and a dyeing temperature in the range of 110.degree. C. to below 140.degree. C.

Abstract: An Albada finder device includes a field frame provided on an eyepiece lens so as to be capable of reflecting part of the light from an objective lens, and a reflecting surface provided on the objective lens to reflect the reflected light from the field frame to the eyepiece lens to indicate a bright frame within the finder view field. The reflecting surface includes a central area containing the optical axis and passing light therethrough, a boundary area surrounding the central area, and a marginal area surrounding the boundary area and having a reflection factor greater than that of the central area. The boundary area has a reflection factor continuously varying so as to be smaller toward the optical axis and is formed in an annular shape having a width substantially equal to the diameter, on the reflecting surface, of a reflected light beam passing from a point of the field frame to the circumference of the exit pupil of the finder.

Abstract: A lens system comprises a converging first lens group, a diverging second lens group and a converging third lens group arranged in this order as viewed from the object side. The lens can focus continuously from infinity down to a very short object distance by moving only the diverging second lens forward and rearward along the optical axis. The paraxial rays exiting from the second lens group and incident on the third lens group are kept always substantially in parallel with the optical axis throughout all the moving range for focusing of the second lens group.

Abstract: An improvement in zoom lenses of the type consisting of four lens groups of positive, negative, positive, power positive and arranged in this order as viewed from the object side is disclosed. The improved zoom lenses exhibit excellent high focusing ability even for close distance photographing with higher magnification.

Abstract: This specification discloses a focus detecting optical device for photoelectrically effecting focus delection by the use of two restricted light beams passed through different areas in the pupil of a phototaking lens in a single lens reflex camera including a finder screen capable of imaging the light beam from the phototaking lens and a pentaprism having reflecting surfaces capable of reflecting a light beam passed through said screen toward an eyepiece lens system having an optical axis substantially orthogonal to said screen.

Abstract: An inverted Galilean finder has a divergent objective lens and a convergent eyepiece. The objective lens includes, in succession from the object side, a first negative lens and a second negative lens. The eyepiece includes, in succession from the object side, a first positive lens and a second positive lens.

Abstract: In an inverted Galilean finder barrel having a divergent objective lens and a convergent eyepiece lens, an indicator device for effecting visual indication within an observation view field comprises indicating means including indicating elements and disposed on the inner side surface of the barrel between the objective lens and the eyepiece lens, a first reflecting optical system having a reflecting surface capable of receiving the light beam from the indicating means and provided at a position opposed to the indicating means on the inner side surface of the barrel, and a second reflecting optical system having an obliquely disposed reflecting surface for reflecting toward the eyepiece lens the light beam from the indicating means reflected by the first reflecting optical system and disposed at a position opposed to the reflecting surface of the first reflecting optical system.

Abstract: A single lens reflex camera body comprises a projected portion provided in the front face of the camera body between a mounting portion of the camera body to which a photographic lens is mounted and a viewfinder mounted to the camera body, and display means provided in the projected portion. The display means is capable of being viewed through the viewfinder mounted to the camera body.

Abstract: A zoom lens system comprises, in order from the object side, a positive first lens group, a negative second lens group, a positive third lens group, a negative fourth lens group and a positive fifth lens group. The first lens group includes a positive lens component comprising a negative and a positive lens cemented together, and a positive meniscus lens component convex to the object side. The second lens group includes a negative lens component and a negative lens component comprising a negative lens and at least one positive lens cemented together. The third lens group includes at least one positive lens component and a positive lens component comprising a positive and a negative lens cemented together. The fourth lens group includes a negative lens component. The fifth lens group comprises a forward and a rearward group spaced apart a substantial distance from each other by an air space.

Abstract: A zoom lens system for a projector has three groups of lenses. The first lens group closest to the object has a composite converging function achieved by a doublet consisting of a first positive lens and a first negative lens. The second lens group is located between the other groups and is movable along the optical axis of the lens system relative to the other groups for varying magnification. It has a composite diverging function achieved by a doublet consisting of a second negative lens and a second positive meniscus lens.

Abstract: Lightfast and waterfast azo dyes suitable for dyeing fibers and paper, particularly cellulosic materials, and having the following formula: ##STR1## wherein A is a group selected from 4-methoxy-2-sulfophenyl, 4-methoxy-3-sulfophenyl, 2- or 3-sulphonyl, tolyl, 4-nitro-2,2'-disulfostilbyl, sulfonaphthyl and 4-(4-sulfophenylazo)-2-sulfophenyl;B is selected from monoethanolamino, diethanolamino, morpholino, and N-methylamino;W is hydrogen or sulfonic acid; andZ is sulfonic acid attached at the meta or para position relative to the pendant diazo.