Abstract:
To provide a portable telephone output limitation management device in which use of a portable telephone set is automatically limited in a site where the use of the set is limited and in which causes of non-response and other various information can be transmitted to an originating party who called the use-limited portable telephone set. The portable telephone output limiting management device issues a radio wave signal of the output limiting command information from an antenna. On reception of the output limiting command information from the antenna, the portable telephone set enters into the output limiting mode to halt direct exchange with a base station and sends out the information on the fact that the set has entered into the output limiting mode. The information includes the portable telephone set management number, telephone number reply message and a notification information flag to the portable telephone output limiting management device, which then takes the place of the portable telephone set to reply to the call-out from the base station until the time the portable telephone set receiving the output limiting command exits the use-limited site.
Abstract:
A portable telephone system in which a portable telephone set which enters a site where the use of the set is limited receives a signal from a portable telephone output limiting management device containing output limiting command information, causing the portable telephone set to halt direct exchange with a base station and send to the output limiting management device, using a low powered radio wave, the portable telephone set management number, telephone number reply message and a notification information flag. The output limiting management device then takes the place of the portable telephone set to reply to a call-out from the base station until the portable telephone set exits the site.
Abstract:
To provide a portable telephone system in which use of the set is automatically limited in a site where the use of the set is limited and in which causes of non-response and other various information can be transmitted to an originating party who called the use-limited portable telephone set. The system includes a portable telephone output limiting management device issuing a radio wave signal of the output limiting command information from an antenna. On reception of the output limiting command information from the antenna, the portable telephone set enters into the output limiting mode to halt direct exchange with the base station and sends out the information on the fact that the set has entered into the output limiting mode and the information including the portable telephone set management number, telephone number reply message and a notification information flag to the portable telephone output limiting management device, which then takes the place of the portable telephone set to reply to the call-out from the base station until the time the portable telephone set receiving the output limiting command exits the site.
Abstract:
In a microprocessor-based controller, scrambled program data words are stored in a read-only memory and user information is stored in a random-access memory. A data converter is connected in the data bus between the microprocessor and the memories for descrambling data words when the ROM is accessed to produce a replica of original program data words and applying the replica to the microprocessor for operating the controller. The data converter simply applies data words to the microprocessor without descrambling when the RAM is accessed. The scrambled program data words in the read-only memory may be divided into multiple data blocks, each of which is a scrambled form of the original program data words with each of multiple keywords defined respectively for the data blocks. A modulo-2 adder is provided for summing each of the keywords with the scrambled program data words of a corresponding data block.
Abstract:
To provide a portable telephone system in which use of the portable telephone set is automatically limited in a site where the use of the set is limited and in which causes of non-response and other various information can be transmitted over a low power channel to a control device, for transmission to an originating party who called the use-limited portable telephone set. On reception of the output limiting command information from the control device, the portable telephone set enters into the output limiting mode to halt direct exchange with the base station and sends out the information on the fact that the set has entered into the output limiting mode and the information including the portable telephone set management number, telephone number reply message and a notification information flag to the control device, which then takes the place of the portable telephone set to reply to the call-out from the base station until the time the portable telephone set receiving the output limiting command exits the site.
Abstract:
A data communication interface for interfacing between a digital radio telephone and computer includes a first protocol converter for converting forward channel data from the telephone into a form usable by the computer and a second protocol converter for converting reverse channel data from the computer into a form usable by the telephone. The digital telephone produces a plurality of status signals indicating the operating states of the telephone. The interface receives each status signal from the telephone and stores it in a status memory. When a command signal is received from the computer, the interface makes a search through the status memory for one corresponding to the received command signal. The detected status signal is applied to the computer and displayed.
Abstract:
A radio telephone of a configuration permitting the selective use of a waveform equalizer is so configured that the output signals of a waveform equalizer or the output signals of a receiving circuit are selectively stored in one memory or sequentially stored in plural memories, respectively, a plurality of memories, and stored signals can be selectively taken out of the one memory when the waveform equalizer is used, and stored signals can be sequentially taken out Of plural memories at respectively proper timings, to thereby to prevent omission and collision of signal at the time of switching between use and non-use of the waveform equalizer.