摘要:
A PDC/PHS phone has both PDC communication function and PHS communication function. The PDC/PHS phone receives a call from a PHS phone through a PHS communication network when it is in the communication with a PDC phone through a PDC communication network. The PDC/PHS phone changes its connection to the PHS communication network to transmit to the PHS phone a fixed answer message indicating that it is in the middle of communication with the PDC phone. The fixed answer message may be transmitted automatically or in response to a predetermined key operation of a user of the PDC/PHS phone. The communication with the PDC phone may be continued irrespective of the call from the PHS phone, or a new communication with the PHS phone may be enabled in response to another predetermined key operation of the user while holding the communication with the PDC phone to be resumed later.
摘要:
A method for initiating a refresh operation of a solid-state nonvolatile memory device coupled to a processor is disclosed. The method comprises determining an error number for a block of the solid-state nonvolatile memory. The error number corresponds to an amount of error bits in a page of the block having a greatest amount of error bits. The method further comprises comparing the error number with an error threshold and determining a reset number indicating an amount of times that the processor has been reset since a previous refresh operation was performed on the block of the solid-state nonvolatile memory. The method further includes comparing the number of resets with a reset threshold and refreshing the block of the solid-state nonvolatile memory when the number of errors exceeds the error threshold and the number of resets exceeds the reset threshold.
摘要:
A method of wireless communication between a base station and a mobile station may entail scanning a first entry of a preferred roaming list for a first base station channel, transmitting a downlink signal from the base station to the mobile station; determining that the downlink signal to the mobile station from the base station has not been received, scanning the preferred roaming list for a second base station, identifying that the second base station does not exist on the preferred roaming list, and inquiring whether a vehicle ignition is off upon determining that the second base station does not exist. Moreover, the method may entail determining that the vehicle ignition is on, and return an excluded channel of a base station to the preferred roaming list and determine that the vehicle ignition is off and invoke a sleep mode of the digital control module.
摘要:
A vehicular wireless apparatus continues a standby state even after an ACC switch of the vehicle is turned off. In the vehicular wireless apparatus, when it is determined that the ACC switch is turned from on to off, paging area information stored in a RAM (volatile memory) is stored in an EEPROM (nonvolatile memory). When the ACC switch is then turned from off to on, a power-on-reset is done for the whole of the vehicular wireless apparatus and paging area information stored in the RAM is reset. The paging area information stored in the EEPROM is then read. Whether a location registration should be newly done is determined based on the read paging area information.
摘要:
A wireless device in a vehicle interfaces with an associated device having a user interface. A wireless circuit included in the wireless device establishes a communications link with a wireless network while the associated device functioning as an end terminal communicates with the network via the communications link. When the interface between the wireless device and associated device is disrupted, the wireless device intentionally disconnects the communications link with the wireless network.
摘要:
An in-vehicle wireless communications device executes an emergency report operation to transmit an emergency report signal from a wireless communications unit to a wireless communications network. During this emergency report operation, integrated electric currents from an in-vehicle battery to an in-vehicle wireless communications device reach a predetermined value, which generates an interrupt. Even at this time, stopping of an operation power from the in-vehicle battery to the wireless communications unit is suspended until the emergency report operation is normally finished.
摘要:
An in-vehicle mount type wireless communication device includes a wireless communication unit which can perform wireless communication in a first wireless communication system when within a first wireless communication area, and can perform wireless communication in the first wireless communication system and a second wireless communication system when the wireless communication device is located in a second wireless communication area. The device further includes a control unit for controlling the wireless communication unit to start wireless communication according to any one of the first wireless communication system and the second wireless communication system. The control unit controls the wireless communication unit to start the wireless communication according to the first wireless communication system if the wireless communication device is located in the second wireless communication area and a content of an application associated with wireless communication is a predetermined one.
摘要:
An in-vehicle wireless communications device receives an incoming signal via a wireless communications unit from the wireless communications network. When the in-vehicle battery is being discharged, the type of the incoming signal is determined. When the incoming signal is for a voice call, a packet communications, or a TV phone, no incoming process for the received incoming signal takes place. In contrast, when the incoming signal received by the wireless communications circuit from the wireless communications network is an incoming signal for a short message service that becomes a trigger for vehicle remote monitoring or vehicle remote control, an incoming process to the received incoming signal is executed.
摘要:
A system and method for controlling messaging between a first processor and a second processor is disclosed. The second processor controls one or more peripheral devices on behalf of a plurality of predetermined tasks being executed by the first processor. The system includes a message control module that receives an input message intended for the second processor from the first processor and maintains a message history based on the received input message and previously received input messages. The message history indicates which peripheral devices of the system are to be on and which tasks of the plurality of tasks requested the peripheral devices to be on. The message control module is further configured to generate an output message that includes output instructions for the second processor based on the message history and an output duration based on the message history. The second processor executes the output instructions.
摘要:
A system and method for correcting a boot error is disclosed. The system comprises a solid-state nonvolatile memory device, the solid-state nonvolatile memory device storing a boot loader at a predetermined block having a first address on the solid-state nonvolatile memory device. The system further comprises a main controller that retrieves the boot loader from the predetermined block upon powering up. The system also includes a monitoring module configured to monitor an initial boot sequence of the main controller and to determine when the predetermined block has a read inability error. The main controller obtains a backup boot loader from a backup block when the monitoring module determines that the predetermined block is corrupted.