Abstract: A method for designing an optical pickup is provided. The optical pick includes a monolithic laser diode that emits a laser light beam for DVD recording and a laser light beam for CD playback, two photodetective portions, and an objective lens, for each of the emitting portions of the monolithic laser diode for emitting the DVD recording and CD playback laser light beams respectively, the specification of the error of the emission direction thereof is determined according to the following formula: |(???1×??1×Dpd1/Dob1????2×??2×Dpd2/Dob2)×Kpd2|??, where, “1” corresponds to the DVD recording laser light beam and “2” corresponds to the CD playback laser light beam, ??? represents the emission angle; ?? represents the sensitivity; Dob represents the diameter of the light beam; Dpd represents the diameter of the spot formed by the light beam; Kpd represents the sensitivity; and ? represents the tolerable value.

Abstract: An optical pickup has a lens that is resiliently supported in such a manner as to be displaceable in different directions by pairs of a first wire, a second wire, and a third wire which are attached to a fixing portion by attaching means. The optical pickup includes a lens holder for holding the lens, and a printed circuit board secured to the lens holder. The first, second, and third wires have the same length and are formed of the same material, and are soldered to the printed circuit board at different distances from the attaching means.

Abstract: A finite optical system that a laser beam from a light source is allowed to be directly incident on an objective lens without passing a collimate lens is employed. The reference position of the objective lens is set so that converged light from the objective lens forms a focal point on a recording layer remoter from the light source of two recording layers in an optical disk. The objective lens moves in a direction of the light source side from the reference position to perform a focusing operation and read information recorded on the recording layer nearer to the light source.

Abstract: An optical pickup that includes: a monolithic laser diode; and a photo-detector including each light receiving portion formed on one substrate and corresponding to each laser beam emitted from the monolithic laser diode, wherein the monolithic laser diode is arranged such that each light emitting point belonging to the monolithic laser diode is positioned on each reference axis, and such that each reference axis is inclined from a direction orthogonal to each laminar face containing the each light emitting point in a direction orthogonal to the active layer by an angle.

Abstract: According to a method for designing an optical pickup including a monolithic laser diode that emits a laser light beam for DVD recording and a laser light beam for CD playback, two photodetective portions provided on the same substrate for receiving the laser light beams, and an objective lens, for each of the emitting portions of the monolithic laser diode for emitting the DVD recording and CD playback laser light beams respectively, the specification of the error of the emission direction thereof is determined according to the following formula: |(?? ?1×??1×Dpd1/Dob1??? ?2×??2×Dpd2/Dob2)×Kpd2|?7, where, let the variables corresponding to the DVD recording laser light beam be followed by a subscript “1” and variables corresponding to the CD playback laser light beam be followed by a subscript “2”, ?? ? represents the emission angle; ?? represents the sensitivity, to the emission angle, of the deviation of the gravity center of the intensity of the light exiting from the object lens; Dob represents the diamet

Abstract: An optical pickup has a laser mounting surface formed around an opening portion of a laser hole while a notch groove ranging from the laser mounting surface to an operating hole is formed in a laser hole side wall portion. A fitting piece removably fitted into the notch groove is provided integrally with a metal holder which is provided for supporting a photodiode and which is locked in the laser mounting surface. The operating hole is defined between a forward end of the fitting piece and an inner end of the notch groove. A laser diode is fitted into a lock hole of the holder coaxial with the laser hole while a radiator plate is attached to the outer surface of the holder. Thus, the laser diode is held between the holder and the radiator plate.

Abstract: A digital broadcasting receiver capable of receiving HD (High Definition) broadcasting, SD (Standard Definition) broadcasting and the like. In the digital broadcasting receiver, a digital broadcasting signal subjected to demodulation is separated/divided in a transport unit before being supplied to decoders. Data on a packet ID included in the digital broadcasting signal is outputted from the transport unit. An MPU determines HD broadcasting or SD broadcasting according to the data on the packet ID and when the MPU determines the SD broadcasting, it instructs the transport unit to have a set subchannel displayed and also instructs an OSD control unit to make an OSD of the subchannel.

Abstract: An apparatus for fixing a half mirror of an optical pickup includes a pair of left-hand-side and right-hand-side presser plate portions 12b, which are respectively extended from both side edge portions of the fastening device body 12a and caused to elastically abut against a surface of the half mirror 3. This apparatus further comprises a pair of left-hand-side and right-hand-side engaging claw portions 12c respectively bent from both side edge portions of the fastening device body 12a in a direction opposite to a direction, wherein the left-hand-side and right-hand-side presser plate portions 12b are extended, to thereby engage with the inner surface 5c, and a catch piece portion 12d bent from a central portion of the fastening device body 12a and extended to a peripheral edge of the opening portion 2a of the light passing hole 2.

Abstract: A finite optical system that a laser beam from a light source is allowed to be directly incident on an objective lens without passing a collimate lens is employed. The reference position of the objective lens is set so that converged light from the objective lens forms a focal point on a recording layer remoter from the light source of two recording layers in an optical disk. The objective lens moves in a direction of the light source side fromthe reference position to perform a focusing operation and read information recorded on the recording layer nearer to the light source.

Abstract: An optical pickup is provided with a substrate on which a plurality of through holes are formed, wires whose base end sides are inserted through the through hole of the substrate, a lens holder supported on the front end sides of the wires, and a retaining member provided between the substrate and lens holder. The retaining member has laterally opened concave portions for filling a cushioning material and notch portions to communicate with these concave portions. The wires are disposed so as to be stored in the concave portions and are, at a lens holder-side surface of the substrate, soldered to the substrate.

Abstract: A menu display apparatus including a selection unit for inputting data for selecting an arbitrary one of a plurality of menu items respectively assigned with numbers which are displayed on a screen of a display unit, and a display control unit for displaying on the screen the number corresponding to the menu item selected by the selection unit.

Abstract: An optical pickup has a lens that is resiliently supported in such a manner as to be displaceable in different directions by pairs of a first wire, a second wire, and a third wire which are attached to a fixing portion by attaching means. The optical pickup includes a lens holder for holding the lens, and a printed circuit board secured to the lens holder. The first, second, and third wires have the same length and are formed of the same material, and are soldered to the printed circuit board at different distances from the attaching means.

Abstract: Compressed audio video data is constituted by a sequence of video information blocks each of which constitutes one unit by a predetermined number of I pictures, a predetermined number of P pictures and a predetermined number of B pictures. In a case of reproducing one of the pictures of the compressed audio video data as a still picture by motion compensation prediction, when a picture stops at the B picture, one of the I pictures closest to the B picture or one of the P pictures closest to the B picture is selected, and the I picture or the P picture thus selected is displayed on a monitor in place of the B picture.

Abstract: When high speed reproduction of digital video information recorded on a DVD which is a record medium is performed at n-fold (n≧3) speed, by operating a high speed reproduction key of a remote control, an expansion unit is controlled by a control unit and a picture of one frame every several frames corresponding to n-fold speed reproduction is reproduced and subsequently normal reproduction of pictures of a required number of frames is sequentially performed.

Abstract: An optical pickup has a laser mounting surface formed around an opening portion of a laser hole while a notch groove ranging from the laser mounting surface to an operating hole is formed in a laser hole side wall portion. A fitting piece removably fitted into the notch groove is provided integrally with a metal holder which is provided for supporting a photodiode and which is locked in the laser mounting surface. The operating hole is defined between a forward end of the fitting piece and an inner end of the notch groove. A laser diode is fitted into a lock hole of the holder coaxial with the laser hole while a radiator plate is attached to the outer surface of the holder. Thus, the laser diode is held between the holder and the radiator plate.

Abstract: In a recording medium drive, a frame on which a deck is attached and a printed circuit board are equipped on a bottom chassis in the drive body, and an indicating display device such as a fluorescent display tube is connected to the printed circuit board and arranged at a position corresponding to a window of a front panel. Projections for locking are formed integrally to the frame, and the fluorescent display tube is caught between the front panel and the projections for locking so as to be positioned. This allows the indicating display device to be held by a simple configuration, and manhours required for manufacture to be reduced.

Abstract: An information recording disk is disposed on a turntable. A damper fasten the information recording disk onto the turntable and coaxially rotated together with the turntable. A sensor unit includes a photo emitter and a photo detector opposed to each other such that respective optical axes are aligned on a straight line. An interception member is formed with the damper and periodically intercepts light emitted from the photo emitter so that the sensor unit detects the damper rotates together with the information recording disk.

Abstract: In an lens holder, a lens 10 inserted in an insertion hole 2 is bonded and secured to a lens holder 1 by an adhesive agent poured in slots 4 formed in such a manner as to divide an outer wall portion 3. Since a sufficient amount of adhesive agent can be allowed to adhere to the lens, the lens can be fixed to the lens holder with sufficient strength. In addition, since the adhesive agent 20 poured in the slots 4 overflows also to the outer side of the slots of the lens holder 1, it is possible to reduce the amount of adhesive agent 20 flowing into the insertion hole 2 side, and it is possible to prevent the adhesive agent from adhering to the surface of the lens 20.

Abstract: An apparatus for fixing a half mirror of an optical pickup includes a pair of left-hand-side and right-hand-side presser plate portions 12b, which are respectively extended from both side edge portions of the fastening device body 12a and caused to elastically abut against a surface of the half mirror 3. This apparatus further comprises a pair of left-hand-side and right-hand-side engaging claw portions 12c respectively bent from both side edge portions of the fastening device body 12a in a direction opposite to a direction, wherein the left-hand-side and right-hand-side presser plate portions 12b are extended, to thereby engage with the inner surface 5c, and a catch piece portion 12d bent from a central portion of the fastening device body 12a and extended to a peripheral edge of the opening portion 2a of the light passing hole 2.

Abstract: A digital broadcasting receiver capable of receiving HD (High Definition) broadcasting, SD (Standard Definition) broadcasting and the like. In the digital broadcasting receiver, a digital broadcasting signal subjected to demodulation is separated/divided in a transport unit before being supplied to decoders. Data on a packet ID included in the digital broadcasting signal is outputted from the transport unit. An MPU determines HD broadcasting or SD broadcasting according to the data on the packet ID and when the MPU determines the SD broadcasting, it instructs the transport unit to have a set subchannel displayed and also instructs an OSD control unit to make an OSD of the subchannel.