Abstract:
In a complex electronic device, in which device units are arranged so as to have substantially the same height of medium loading spaces, in connecting a circuit board for operation button control and each operation unit by use of FFCs, wiring in a limited space is possible even when the FFCs are bent or folded, without exerting an adverse effect on the arrangement of other parts. There is provided a complex electronic device in which in order to transmit operation signals of operation buttons of an optical disk recording/reading unit to an operation control circuit on a control circuit board of the unit, a connector (A) is arranged between the optical disk recording/reading unit and the control circuit board disposed below the optical disk recording/reading unit and on a side facing the front of devices on the control circuit board, and the connector (A) on the control circuit board and a connector (B) on the circuit board for operation button control are connected by a flexible flat cable that is bent or folded in a Z-shaped form by mountain folding and valley folding.
Abstract:
A method for selectively removing metal from a metallized substrate (e.g., a metallized polymer film) and the formation of devices thereby are provided. Th method involves selectively exposing the metallized surface to a demetallizing (i.e., an oxidizing) chemical solution. The metallized layer can be selectively exposed to the demetallizing solution using a flexographic printing process wherein printing rollers are used to transfer the demetallizing solution to the metallized surface. An identification device including, for example, a holographic, retro-reflective, or other metallized material and a radio-frequency transponder are also provided. The radio-frequency transponder includes an RF chip and an antenna in electrical communication with the chip. The identification device including the holographic image allows both electronic identification through the reading or identification data stored in the chip and optical identification via the holographic image.
Abstract:
A method for producing a wiring board for a semiconductor package having a base substrate with first and second surfaces; a wiring layer including wiring patterns formed on at least one of the first and second surfaces; a plurality of semiconductor element mounting areas formed on the surface of the base substrate on which the wiring layer is formed; and individual patterns as position information formed for the respective semiconductor element mounting areas, the individual patterns having a different shape for each of the respective semiconductor element mounting areas. The individual patterns as position information are formed on peripheral regions of the respective semiconductor element mounting areas.
Abstract:
Discarded printed circuit boards are sorted according to the alloying elements in solder used on the printed circuit boards. After sorting, the printed circuit boards are heated to melt the solder, and the molten solder is collected.
Abstract:
The invention discloses an identifiable flexible printed circuit board (PCB) and a method of fabricating the same. The identifiable flexible PCB includes a flexible substrate, a conductive layer, and a printing ink layer. First, the conductive layer is formed over a surface of the flexible substrate. Second, the printing ink layer is formed on the surface of the flexible substrate by coating, exposing, and developing to uncover parts of the conductive layer. Also, at least one identifiable area is formed on the printing ink layer and one can easily and correctly identify the cartridge with the flexible PCB.
Abstract:
A wiring board for a semiconductor package comprises a base substrate having first and second surfaces; a wiring layer consisting of necessary wiring patterns formed on at least one of the first and second surfaces; a plurality of semiconductor element mounting areas formed on the surface of the base substrate on which the wiring layer is formed; and individual patterns as position information provided for the respective semiconductor element mounting areas, the individual patterns having a particular shape for the respective semiconductor element mounting area. The individual patterns as position information are formed on peripheral regions of the respective semiconductor element mounting areas.
Abstract:
An insulation layer is formed on a ground layer. The insulation layer includes first and second regions for forming wiring layers. The impedance of a wiring layer formed on the second region is lower than that of a wiring layer formed on the first region. A signal line pattern is formed on the wiring layer on the first region of the insulation layer. A power supply plane is formed on the wiring layer on the second region of the insulation layer in order to feed power to the signal line pattern through a termination resistor connected to the signal line pattern.
Abstract:
A data processing apparatus includes an input terminal for receiving an audio signal, a 1-bit A/D converter for A/D converting the audio signal so as to obtain a bitstream signal, and a prediction unit for carrying out a prediction step on the bitstream signal so as to obtain a predicted bitstream signal. The data processing apparatus further includes a signal combination unit for combining the bitstream signal and the predicted bitstream signal so as to obtain a residue bitstream signal, and an output terminal for supplying the residual bitstream signal. A recording apparatus or a transmitter apparatus can use the data processing apparatus.
Abstract:
A printed wiring board includes a substrate having an electrically conductive pattern disposed on at least one side of the substrate. An electrically conductive through-hole is formed in the substrate. At least one of a solder resist film and an electromagnetic shielding layer undercoat film are disposed over the conductive pattern but do not cover the electrically conductive through-hole. An ink layer is formed over at least one end of the electrically conductive through-hole. A method of manufacturing the printed wiring board embodied by the invention comprises providing a substrate having an electrically conductive through-hole. A conductive pattern is formed on at least one side of the substrate. At least one of a solder resist film and an electromagnetic shielding layer undercoat film are formed over the conductive pattern but not over the electrically conductive through-hole. An ink layer is formed over at least one end of the electrically conductive through-hole. The ink layer may be formed simultaneously with the printing of symbols of electronic parts to be mounted on the printed wiring board.
Abstract:
A method of fabricating universal circuit boards which can be utilized in making up the most common circuit elements, such as amplifiers and the like, to be in turn combined to make up any number of customed design electronic devices. The universal printed circuit board disclosed has numerous paths which can be alternately utilized to provide a combination of many possible circuits. This board can then be used with other similarly designed boards to fabricate complete custom-designed electronic equipment.