Hitachi, Ltd.

Renesas Electronics Corporation

Renesas Technology Corp.

Yuji Hatano

Toru Baji

Koki Noguchi

Atsushi Kiuchi

Tetsuya Nakagawa

Yasuhiro Sagesaka

Shiro Baba

Yasushi Akao

Masao Hotta

Takashi Yoshino

Takafumi Kikuchi

Mitsuru Hiraki

Masaru Kokubo

Kouki Noguchi

Koichi Seki

Koji Yamada

Mikio Hirano

Hirozi Yamada

Hiromi Watanabe

Hirotsugu Kojima

Shinichiro Yano

Masanori Otsuka

Jun Ueno

Hiroyuki Mori

Keiro Komatsu

Takenori Okitaka

Yasuyuki Murakami

A magnetometer includes a diamond sensor, an excitation light source, a diamond sensor case, and a photodiode. The excitation light source irradiates the diamond sensor case with excitation light. In the diamond sensor case, a reflection film which reflects excitation light is formed on either a front surface or an inner surface, and the diamond sensor is stored. The photodiode detects intensity of fluorescence generated from the diamond sensor. The diamond sensor case includes a fluorescence output window and an excitation-light reception window. Fluorescence generated by the diamond sensor is output through the fluorescence output window. Excitation light emitted by the excitation light source is received through the excitation-light reception window. The photodiode is provided on a side of a second surface opposite to a first surface which is a magnetism measurement surface of the diamond sensor.

Magnetometer

A magnetism measuring device includes a light source unit, a diamond crystal and an image sensor. The light source unit irradiates the diamond crystal with an excitation light, and irradiates the image sensor with a fluorescent light generated by the diamond crystal. The diamond crystal includes a plurality of nitrogen-vacancy pairs. The image sensor detects an intensity of the fluorescent light, which is generated from the diamond crystal, by a plurality of pixels. The image sensor and the light source unit are disposed so as to be contained within a projection area of the diamond crystal.

Magnetism measuring device

High-accuracy magnetic measurement is performed by efficiently using nitrogen-vacancy pairs in all orientations. A magnetic measurement apparatus includes a diamond crystal and an image sensor. The diamond crystal has nitrogen-vacancy pairs. The image sensor detects the intensities of fluorescence generated by an exciting light applied to the diamond crystal by using a plurality of pixels. The nitrogen-vacancy pairs of the diamond crystal are made to one-to-one correspond to the pixels. The fluorescence generated by one nitrogen-vacancy pair is received by one pixel made to correspond to the nitrogen-vacancy pair.

Magnetic measurement apparatus

A low cost, a low power consumption and a small size are three very important factors for a mobile communication terminal. A great problem is posed by the conventional technique using a DSP and a CPU independent of each other which requires two external memory systems. Also, two peripheral units are required for data input and output of the DSP and CPU. As a result, an extraneous communication overhead occurs between the DSP and the CPU. The invention realizes a mobile communication terminal system by a DSP/CPU integrated chip comprising a DSP/CPU core () integrated as a single bus master, an integrated external bus interface () and an integrated peripheral circuit interface. The memory systems and the peripheral circuits of the DSP and the CPU can thus be integrated to realize a mobile communication terminal system low in cost and power consumption and small in size.

Terminal apparatus

In microcomputers and digital signal processors in which a central processing unit for controlling the entire system and a digital signal processing unit having a product sum function required to process digital signals efficiently are mounted on one and the same chip, an increase in the number of processing steps caused by differing types of data handled by the calculators is prevented, thereby enhancing the efficiency of the digital signal processing.

Data processing device having a central processing unit and digital signal processing unit

A low cost, a low power consumption and a small size are three very important factors for a mobile communication terminal. A great problem is posed by the conventional technique using a DSP and a CPU independent of each other which requires two external memory systems. Also, two peripheral units are required for data input and output of the DSP and CPU. As a result, an extraneous communication overhead occurs between the DSP and the CPU. The invention realizes a mobile communication terminal system by a DSP/CPU integrated chip comprising a DSP/CPU core ( ) integrated as a single bus master, an integrated external bus interface ( ) and an integrated peripheral circuit interface. The memory systems and the peripheral circuits of the DSP and the CPU can thus be integrated to realize a mobile communication terminal system low in cost and power consumption and small in size.

Apparatus has a microprocessor including DSP and a CPU integrated with each other as a single bus master

Terminal

A bus driving system includes n bus wires having data signal wires and control signal wires, (n-1) switching circuits constituting driver circuits at a transmitting end, a precharge circuitry for precharging (n-2) bus wires and (n-1)-th bus wire with a control circuit for redistributing wire capacitances of transmission lines formed by the bus wires, and a predischarge circuitry for predischarging n-th bus wire. The switching circuits control conduction and non-conduction between (n-2) bus wires, (n-1)-th bus wire and n-th bus wire, wherein the (n-2) switching circuits respond to (n-2) bit signals and a control signal, while the (n-1)-th switching circuit responds to the control signal. The signal from the transmitting end is detected by a detection circuit at a receiving end via the transmission lines.

Bus driving system and integrated circuit device using the same

In microcomputers and digital signal processors in which a central processing unit for controlling the entire system and a digital signal processing unit having a product sum function required to process digital signals efficiently are mounted on one and the same chippthis invention prevents an increase in the number of processing steps caused by differing types of data handled by the calculators, thereby enhancing the efficiency of the digital signal processing. The digital signal processing unit is made a calculation unit that handles fixed-point data, and an instruction calling for execution of a fixed-point data calculation is provided separately from the conventional integer calculation instruction. When, in the data transfer between the digital signal processing unit and memories or external circuits, data shorter in bit length than the calculation precision is transferred, the calculation unit has a function to input and output data to and from the higher-order side of the register in which the data is stored and the fixed point data transfer instruction is provided separately from the conventional integer data transfer instruction. This invention can eliminate additional correction processing necessitated when the integer data processing unit is made to execute the digitalsignal processing.

System for maintaining fixed-point data alignment within a combination

A data processing system being constructed such that the amount of time a data bus of a data processor is occupied to perform predetermined data processing operations is reduced. The data processing system includes a data processor for processing data, a first memory for storing data, a second memory for storing data, a dedicated data processing circuit for performing a predetermined data processing operation on data, a data bus and first and second dedicated buses. The data bus is connected to said data processor and the first and second memories and transfers processed data from the data processor to the first memory and from the second memory to the data processor. The first dedicated bus is independent of the data bus and is connected to the circuit and the first memory and transfers processed data from the first memory to the circuit. The second dedicated bus is independent of the data bus, is connected to the circuit and the second memory and transfers data operated on by the circuit from the circuit to the second memory.

Data processing system

In a mobile wireless communication end device having an electric power source including a cell, and a signal processing part and a transmitting-receiving part, to which electric power is applied from the electric power source, operation is performed in operation mode selected previously by the user when voltage of the electric power source is dropped. The signal processing part and the transmitting-receiving part have a normal operation mode operating at normal electric power and a low power operation mode operating at electric power lower than the normal operation mode. The mobile wireless communication end device includes operation mode setting apparatus for previously setting the operation mode of the device, observing apparatus for observing the voltage of the cell of the electric power source and generating a low power operation request signal when the voltage becomes a prescribed value or less, and apparatus for changing the signal processing part and the transmitting-receiving part to low power operation mode, when the low power operation mode is set by the operation mode setting means and the low power operation request signal is generated by the observing apparatus.

Mobile communication end device with low power operation mode

A DC powered integrated circuit includes a plurality of magnetic flux coupling type Josephson elements. First and second Josephson elements are connected in series to form a first element series circuit of Josephson elements. Third and fourth Josephson elements are connected in series to form a second element series circuit of Josephson elements. The first and second element series circuits are connected in series to form a huffle circuit, with a load inductance, three resistors and a DC current source.

Growing community of inventors

Arlington, VA, United States of America

Yuji Hatano