Abstract: A received FM wave signal is subjected to quadrature detection to generate baseband I and Q signals. The baseband I and Q signals are converted into a sequence of samples of phase information. An FM-detection-result signal is generated in response to a variation between two successive samples of the phase information. A power of the baseband I and Q signals is computed. A decision is made as to whether the baseband I and Q signals are valid or invalid by referring to the computed power and at least one threshold value. Signal interpolation is implemented with respect to the FM-detection-result signal in cases where it is decided that the baseband I and Q signals are invalid.

Abstract: A data conversion device is provided with a data converting means that sequentially converts first data into second data of the number of second bits, wherein an analog signal is quantized into the first data by the number of first bits, and the first and second data can be first and second maximum values, respectively. The data converting means is comprised of a first conversion means (steps 21 and 23) that, when a value of the fast data is not the first maximum value, converts the first data to the second data by adding 0 to a lower bit side of the first data and a second conversion means (steps 21 and 24-26) that converts the first data to the second data so that, when a value of the first data is the fast maximum value, a value can be made larger, in accordance with a value be-fore or after the first data, than the data of the number of second bits obtained by adding 0 to the lower bit side of the first data.

Abstract: A multiplication value decision unit (12) decides a multiplication value which is a positive value or a negative value corresponding to a bit value of each bit contained in a binary bit string constituting a scramble pattern generated in a pattern generation unit (11). A multiplication processing unit (13) multiplies symbol data representing each symbol value in the symbol data string formed by the multinary symbol containing a predetermined pair of a positive value and a negative value having an identical absolute value, in the value area, by the multiplication value decided by the multiplication value decision unit (12). Here, the multiplication processing unit (13) successively executes the multiplication between the symbol data for one symbol and the multiplication value decided corresponding to the bit value of the one bit contained in the scramble pattern until the number of symbols expressed by the symbol data string is reached.

Abstract: This invention is directed to a wireless apparatus to carry out transmission and reception by either a digital communication system or an analog communication system and, in particular, provides a technical method to change over a signal system for a transmission electric wave. Concretely, when a carrier is received, a switch (PTT) is pushed in the case of response. In this case, if a default set transmission signal system is different from a reception signal system of a received audio signal, it is possible to modulate the audio signal after the transmission signal system is changed over to the same signal system as the reception signal system. Thus, a wireless apparatus is provided for making it possible to promptly change over a signal system of a transmission electric wave without doing troublesome operations.

Abstract: An utterance type vehicle-mounted device (200) is mounted on a vehicle traveling on a road and provided with a communication processing unit for receiving information from a roadside apparatus (100) set on a road side and an information reproduction unit (information output unit) for outputting the information received by the communication processing unit. The utterance type vehicle-mounted device (200) further includes a user input unit that inputs the following effect of information in the case where the information received from the roadside apparatus (100) and outputted by the information reproduction unit (information output unit) is specific information to be provided to the same direction as the vehicle travels or a different direction. Thus, vehicle-mounted device, an output propriety method, a road communication system, and a program that are not made to output traffic information or the like which is not directed to its own vehicle.

Abstract: A vehicle (12) starts from the front of a home (11a) and moves to a destination (11b). An area (area—1) with the home (11a) at the center is an area where the position of the home (11a) is estimated to be easily specified, and a road (13a) to be searched is a road required for searching a moving route of the vehicle (12). An in-vehicle device (200) does not transmit position information or the like acquired in the area (area—1) in response to a request of position information from a road side device (100). The in-vehicle device (200) transmits the position information or the like on the vehicle (12) acquired after the vehicle (12) moves out of the area (area—1) to the road side device (100). The position information on the vehicle is transmitted to the road side device by protecting personal information.

Abstract: A soft decision device and method for obtaining a soft decision value as a value expressing a probability as near the actual probability as possible by simple processing. The soft decision device and method are used to output a soft decision value for each bit of each symbol used for decoding the each symbol as a value corresponding to the function value obtained by applying a predetermined function for each bit to the sampled value of the each symbol according to the demodulated signal such that the probability distribution of the sampled value in each symbol point is the Gauss distribution. The function for each bit is approximated to a curve expressing the probability that each bit is 1 or 0 for the sampled value of each symbol of the demodulated signal and defined by using a quadratic function.

Abstract: Reproduction is performed so that the user can grasp the details of content information on long sentence reading the reproduction of which has been suspended. If an vehicle-mounted device (10) receives content information with higher priority of the reproduction than that of the content information on the long sentence reading during the reproduction of the content information on the long sentence reading received from a center apparatus by a reproduction section (step S4; Y), the vehicle-mounted device (10) allows the control of a control unit to suspend the reproduction of the content information on the long sentence reading (step S7) and to start the reproduction of the content information with higher priority (step S8). If the reproduction ends, the vehicle-mounted device (10) allows the reproduction means to resume the suspended reproduction of the content information on the long sentence reading (step S12).

Abstract: An information distribution system includes a roadside apparatus which transmits an utterance type provided information containing audio instruction information based on a traveling direction to be provided by the utterance type provided information. When an vehicle-mounted device receives an utterance type provided information via a communication unit from the roadside apparatus, the vehicle-mounted device outputs different utterance type provided information by an audio in accordance with the audio instruction in-formation contained in the received utterance type provided information, so that a vehicle driver can judge whether the information provided from the roadside apparatus is significant information.

Abstract: A roadside device (15) is provided with a corresponding table in the case where there is an item of a new version of a taste data table to take over from user taste information in an item of an old version of the taste data table. In the corresponding table, item numbers “52”, “53”, “62” and “63” in the old version of the taste table, for example, are made to correspond to item numbers “52”, “53” and “63” in the new version of the taste table. An ITS vehicle-mounted device (17) sets user taste data in the item numbers of the old version corresponding to the item numbers of the new version to default values of the items in the new version for a transmitting-destination user of the taste data table of the new version and transmits the default data to an ITS vehicle-mounted device (17) of the transmitting-destination user.

Abstract: A road-vehicle communication system comprises roadside apparatuses, a center device, and a vehicle-mounted device mounted in a vehicle. The roadside apparatuses are each given identification information for identifying itself. The center device transmits to the vehicle the identification information about a first roadside apparatus installed on the road where the vehicle is traveling as first identification information via the first roadside apparatus and the identification information about a second roadside apparatus via which the vehicle is expected to travel to the destination as second identification information when the vehicle is traveling in the lane of the road where the first roadside apparatus is installed. The vehicle-mounted device stores the transmitted first identification information.

Abstract: A vehicle (12) starts from the front of a home (11a) and moves to a destination (11b). An area (area—1) with the home (11a) at the center is an area where the position of the home (11a) is estimated to be easily specified, and a road (13a) to be searched is a road required for searching a moving route of the vehicle (12). An in-vehicle device (200) does not transmit position information or the like acquired in the area (area—1) in response to a request of position information from a road side device (100). The in-vehicle device (200) transmits the position information or the like on the vehicle (12) acquired after the vehicle (12) moves out of the area (area—1) to the road side device (100). The position information on the vehicle is transmitted to the road side device by protecting personal information.

Abstract: A navigation device (100) has a position detection section (7), an interface (4), a touch panel (62), and a computer (1). The computer (1) has timekeeper means for clocking a current time, estimated arrival time calculation means for calculating the estimated time of arrival at a destination by using the touch panel (62), mail creation instruction means for causing, through the interface, (4) a portable telephone (200) to create mail containing text that informs arrival at the calculated estimated time of arrival, and mail transmission instruction means for causing the portable telephone (200) to transmit the created mail. The estimated time of arrival is transmitted to the other party without operation of a portable telephone by a driver.

Abstract: An utterance type road traffic information providing device (system) provided with a roadside apparatus (100) set on a road where a vehicle travels, at a parking lot or a place adjacent to the parking lot for transmitting alarm information by wireless communication, an utterance type vehicle-mounted device (200) mounted on a vehicle for receiving the alarm information from the roadside apparatus by wireless communication and outputting the alarm information, a administration server (300) that exchanges various information with the roadside apparatus (100). The utterance type vehicle-mounted device (200) is comprised of a predetermined operation unit and a control unit. The control unit cancels a part or all of the utterance voice output of the alarm information supplied from the roadside apparatus (100) in accordance with a predetermined operation of the operation unit. An output of the same alarm information or alarm information irrelevant to its own vehicle is prevented.

Abstract: An information distribution system comprises a roadside apparatus, a center apparatus, and a vehicle-mounted device. The center apparatus transmits to a predetermined area through the roadside apparatus first distribution information including a predetermined division number for identifying a road where the roadside apparatus are installed or second distribution information including speech information, a division number, and execution condition information for executing the speech information depending on the division number included in the first distribution information and that included in the second one.

Abstract: A microphone-unit supporting structure comprises a microphone unit and a holder. The microphone unit includes a substantially-cylindrical microphone element, a printed circuit board fixed to a back of the microphone element, and at least two projections extending radially outward from the printed circuit board and being circumferentially spaced at such an angular interval that when one of the projections is assumed to be on a reference line for line symmetry, the other projection or projections are off the reference line. The holder includes a microphone-unit supporting portion for supporting the microphone unit. The holder has a first groove for receiving first one of the projections, and a second groove for receiving second one of the projections. The first groove is open in a backward direction. The second groove is open in a frontward direction.

Abstract: A road-vehicle communication system warns or gives caution to a vehicle traveling in a reverse way direction and may also give warning to vehicles traveling in a correct direction. The road-vehicle communication system includes a first roadside apparatus at an entrance gate that gives entry gate pass information indicating that a vehicle passing a communicative area has entered a toll road. A second roadside apparatus at an exit ramp acquires any given entry gate pass information from a passing vehicle. An administration device judges whether or not the entry gate pass information is acquired from the passing vehicle. If the entry gate pass information is not acquired, the second roadside apparatus provides the vehicle with reverse-way driving warning information for warning the vehicle that the vehicle is traveling in the reverse direction.

Abstract: In a radio receiving apparatus, an analog received signal is converted into a digital received signal. An unwanted wave in an adjacent channel band is rejected, that is adjacent to a passband for the digital received signal. The digital received signal with no unwanted wave is converted into a first demodulated signal. The first demodulated signal is converted into a second demodulated signal in analog form. A noise component is extracted from the first demodulated signal. The second demodulated signal is suppressed under squelch control when a squelch voltage that is a voltage of the noise component after rectification and smoothing becomes equal to or higher than a predetermined threshold level.

Abstract: A radio repeating system has first and second radio terminals, a radio repeater to receive a signal transmitted from the first radio terminal and transmit the signal to the second radio terminal, and a controller to control the radio repeater. The controller has a terminal signal determiner to detect a signal from the first radio terminal to determine whether the first radio terminal is in a transmission halt mode or a transmission mode, a first counter to start counting when a result of detection is the transmission halt mode, and a second counter to start counting when a result of detection is the transmission mode. The controller halts a wireless relay operation of the radio repeater when the result of detection is the transmission halt mode while the second timer is operating, or when the first timer finishes counting.