Abstract: The computing device calculates an equivalence H0?2m*k+1 (mod n) relating to a divisor n of 2m*k+1 (step A), computes an equivalence H?2E(p, m, k) (mod n) of 2E(p, m, k) (mod n) from H0 by an REDC operation (step B), and performs a correction operation by H=REDC (H, G)n for g=2k*G(p, m, k) when 2p>m×k (step C).

Abstract: A multiple-word multiplication-accumulation circuit suitable for use with a single-port memory. The circuit is composed of a multiplication-accumulation (MAC) operator and surrounding registers. The MAC operator has multiplicand and multiplier input ports with different bit widths to calculate a sum of products of multiple-word data read out of a memory. The registers serve as buffer storage of multiple-word data to be supplied to individual input ports of the MAC operator. The amount of data supplied to the MAC operator in each clock cycle is adjusted such that total amount of data consumed and produced by the MAC operator in one clock cycle will be equal to or smaller than the maximum amount of data that the memory can transfer in one clock cycle. This feature enables the use of a bandwidth-limited single-port memory, without causing adverse effect on the efficiency of MAC operator usage.

Abstract: A reality generating device wherein a traveling toy with a chassis and a body includes: an operation sound generating unit for generating operation sounds of the traveling toy during operation; a vibration generating unit attached to the body for causing the body to vibrate; and a travel driving unit provided on the body for causing the traveling toy to travel. If desired, operation sounds and vibrations are simultaneously generated for enhanced reality of the traveling toy.

Abstract: An electronic tag comprises a unit for storing transmission-use data and a unit for both comparing between the stored data and comparison data sent from an R/W and for determining whether or not the identifier of the tag per se is to be transmitted to the R/W in order to participate in an anti-collision process carried out between the electronic tag and the R/W as a necessary process prior to transmitting data to the R/W for the purpose of speeding up the recognition of electronic tags retaining data satisfying a condition by making the electronic tags retaining data satisfying the condition, from among a large number of electronic tags, participate in the anti-collision process.

Abstract: An arithmetic device for Montgomery modular multiplication which quickly calculates a parameter ND, the parameter ND satisfying R×R?1?N×ND=1 for an integer N and a radix R that is coprime to and greater than N, with a large number of effective lower bits. The device comprises an ND generator, a multiplication-accumulation (MAC) operator, and a sum data store. The ND generator produces effective lower bits of ND at a rate of k bits per clock cycle, with reference to lower k bits of a variable S, as well as to lower k bits of an odd positive integer N. The MAC operator multiplies the produced k-bit ND value by N and adds the resulting product to S. The sum data store stores the variable S, which is updated with the output of the MAC operator, with its bits shifted right by k bits, for use by the ND generator in the subsequent clock cycle.

Abstract: A video reproducing apparatus which comprises a radio control signal receiving portion, a video sound data reproducing portion connected to the radio control signal receiving portion, a video projection portion connected to the radio control signal receiving portion and the video sound data reproducing portion, speakers connected to the video sound data reproducing portion, a housing for accommodating the video sound data reproducing portion, the video projection portion, and the speakers, and a housing drive portion for moving the housing, and which drives the housing according to a control signal of the housing drive portion which controls the housing drive portion and which is received by the radio control signal receiving portion, projects the video sound data onto the video projection portion according to a control signal of the video sound data reproducing portion at an arbitrary position, and reproduces the data through the speakers.

Abstract: Radio control over a distance beyond the arriving distance of the conventional radio control and transmission of the continuous instruction signal on the real time are possible. The system provides DTMF signal generation means for modulation of a control signal for controlling a controllable section into DTMF signal, VOIP transmission means for receiving DTMF signal to generate VOIP signal for transmission to VOIP line, VOIP line capable of transmitting VOIP signal, VOIP receiving means for receiving VOIP signal for conversion into DTMF code, DTMF demodulation and retransmission means for conversion of regenerated DTMF signal into a radio control transmission signal and a controllable section for receiving the radio control transmission signal and the signal generated by DTMF signal generation means is driven by DTMF demodulation and retransmission means through VOIP line in order to control the receiving means.

Abstract: A radio-controlled toy two-wheeled vehicle where a front wheel support body is installed on a vehicle body without steering angle limitation and a doll portion is installed swingably on the upper part of the vehicle. The doll portion is moved by radio control vertically to an advance direction of the vehicle and parallel in a horizontal direction with respect to the vehicle body, so that steering is made by tilting the front wheel support body through the movement of doll's gravity center caused by the parallel movement of the doll. A doll movement control portion and travel control of the two-wheeled vehicle are conducted by radio. The doll movement control portion is mounted on the middle of the two-wheeled vehicle. A drive portion for driving the doll is fitted loosely in a hole portion cut in a doll's torso portion.

Abstract: A two-wheeled toy vehicle by radio control having a supporting member of a front wheel mounted on a vehicle body so as to control freely in steering angle and a rider-like doll mounted on an upper portion of the vehicle body, the doll response to the radio controlled steering operation, effecting parallel displacement vertically to traveling direction and horizontally to the vehicle body, the steering operation being effected by slanting the supporting member of the front wheel in accordance with displacement of the toy's gravity center caused by the parallel displacement of the doll. The supporting member of the front wheel includes a front fork joint provided with a connecting portion combined to the vehicle body and a long cylindrical member provided with an oval like opening portion at its upper part with opposite ends being jointed with a specific angle to the connecting portion.

Abstract: A transmitter for radio control with rotary control means on its both sides is provided.

Abstract: A radio-controlled toy two-wheeled vehicle where a front wheel support body is installed on a vehicle body without steering angle limitation and a doll portion is installed swingably on the upper part of the vehicle. The doll portion is moved by radio control vertically to an advance direction of the vehicle and parallel in a horizontal direction with respect to the vehicle body, so that steering is made by tilting the front wheel support body through the movement of doll's gravity center caused by the parallel movement of the doll. A doll movement control portion and travel control of the two-wheeled vehicle are conducted by radio. The doll movement control portion is mounted on the middle of the two-wheeled vehicle. A drive portion for driving the doll is fitted loosely in a hole portion cut in a doll's torso portion.

Abstract: The computing device calculates an equivalence H0?2m*k+1 (mod n) relating to a divisor n of 2m*k+1 (step A), computes an equivalence H?2E(p, m, k) (mod n) of 2E(p, m, k) (mod n) from H0 by an REDC operation (step B), and performs a correction operation by H=REDC (H, G)n for g=2k*G(p, m, k) when 2p>m×k (step C).

Abstract: A two-wheeled toy vehicle by radio control having a supporting member of a front wheel mounted on a vehicle body so as to control freely in steering angle and a rider-like doll mounted on an upper portion of the vehicle body, the doll response to the radio controlled steering operation, effecting parallel displacement vertically to traveling direction and horizontally to the vehicle body, the steering operation being effected by slanting the supporting member of the front wheel in accordance with displacement of the toy's gravity center caused by the parallel displacement of the doll. The supporting member of the front wheel includes a front fork joint provided with a connecting portion combined to the vehicle body and a long cylindrical member provided with an oval like opening portion at its upper part with opposite ends being jointed with a specific angle to the connecting portion.

Abstract: To provide a radio control transmitter that generates and transmits a control signal controlling a travelling direction of a toy vehicle, the radio control transmitter comprises: a supporter provided with a bearing section which is spherically recessed at the upper part; a lower case wherein the supporter protrudes through an inner center base; an opening section of an upper case formed at the center wherein the supporter penetrates through; a substrate positioned inside the lower case and perpendicular to the supporter; a plurality of switches which are fixed around a substrate opening section opened on the substrate, and which determine the travelling direction of the toy vehicle; and a control shaft which maintains a plurality of pressing sections positioned on each of the switches, comprising a spherical end axis section which is rotably fixed to the bearing section at the lower part of the control shaft.

Abstract: A wireless control transmitter for remotely controlling a controlled body of a wireless control apparatus by an electromagnetic wave, which comprises a grip to be grasped by a dominant hand of a user, a throttle trigger lever slidably protruding along a lower surface of a controller provided at a head portion of the grip and for controlling forward and backward movements of the controlled body, and a steering wheel arranged on the upper surface of an end portion of the controller and for controlling right and left turns of the controlled body, wherein the steering wheel tilts and fixes its axial direction toward a particular direction with respect to the controller.

Abstract: A programmable logic device with ferroelectric configuration memories storing multiple configuration data sets. The device has programmable logic blocks, interconnections, and I/O blocks to provide desired logic functions. Those building blocks can be dynamically reconfigured by changing the selection of configuration data stored in the device's integral configuration memories. The configuration memories are divided into groups, so that they can be loaded concurrently with multiple configuration data streams. To protect the content of configuration memories from unauthorized access, the device employs an authentication mechanism that uses security IDs stored in the configuration memories. The device has a memory controller to provide an appropriate power supply sequence for ferroelectric memory cells to ensure the reliable data retention when the device is powered up or shut down.

Abstract: A multiple-word multiplication-accumulation circuit suitable for use with a single-port memory. The circuit is composed of a multiplication-accumulation (MAC) operator and surrounding registers. The MAC operator has multiplicand and multiplier input ports with different bit widths to calculate a sum of products of multiple-word data read out of a memory. The registers serve as buffer storage of multiple-word data to be supplied to individual input ports of the MAC operator. The amount of data supplied to the MAC operator in each clock cycle is adjusted such that total amount of data consumed and produced by the MAC operator in one clock cycle will be equal to or smaller than the maximum amount of data that the memory can transfer in one clock cycle. This feature enables the use of a bandwidth-limited single-port memory, without causing adverse effect on the efficiency of MAC operator usage.

Abstract: An arithmetic device for Montgomery modular multiplication which quickly calculates a parameter ND with a large number of effective lower bits. The device comprises an ND generator, a multiplication-accumulation (MAC) operator, and a sum data store. The ND generator produces effective lower bits of ND at a rate of k bits per clock cycle, with reference to lower k bits of a variable S, as well as to lower k bits of an odd positive integer N. The MAC operator multiplies the produced k-bit ND value by N and adds the resulting product to S. The sum data store stores the variable S, which is updated with the output of the MAC operator, with its bits shifted right by k bits, for use by the ND generator in the subsequent clock cycle.

Abstract: A transmitter for radio control with rotary control means on its both sides is provided.