Abstract: An LCD is integrated with the cover glass of a wrist watch radio paging receiver which indicates the time data with a dial plate and hands, and a message is displayed on the cover glass by controlling this LCD. In this message display, the parts of the characters indicating the message are made transparent and the remaining parts intercept light. In this manner, message display is made possible by the difference in light transmissivity.

Abstract: A mobile radio unit receives a time division multiplexed signal and detects the received signal strength of the time division multiplexed signal. An automatic gain control circuit automatically gain controls the degree of amplification of the received signal based on an amplification coefficient controlled by a control circuit and an detection result of a detection circuit, where the amplification coefficient showing follow-up ability of automatic gain control to the received signal strength is variable.

Abstract: A mobile phone set includes a base unit and at least one handset belonging to the base unit. In the base unit, a receiving section 11 receives a first modulated wave S.sub.1 which is a digital modulated wave from TX 3, and a demodulating section 12 demodulates the received wave, and further a decoding section 13 decodes the demodulated wave. Further, a detecting section 17 detects the demodulated wave. Further, a detecting section 17 detects that the decoded signal is of a calling signal for the handsets 2-1 and 2-2 associated with the base unit, and after the detection a controlling section 25 instructs a D/A converting section 14 to D/a convert a digital signal decoded by the decoding section 13 to an analog signal and a modulating section 15 to modulate the analog signal. A transmitting section 16 transmits a second modulated wave S.sub.2 as the analog modulated wave to the handset 2-1 or 2-2. Further, in the base unit 1, a receiving section 18 receives a third modulated wave S.sub.

Abstract: In a CDMA communication network, each base station (BS) is made to establish synchronism between a downward transmission signal directed to a mobile station (MS) and an upward reception signal received from the mobile station by adjusting in the mobile station a mobile generated SS pattern into an adjusted SS pattern of producing an upward transmission signal for reception at the base station as the upward reception signal. In order to get the adjusted SS pattern, the base station inserts in the downward transmission signal an inserted signal representative of a propagation delay t(D) between the base and the mobile stations and a propagation delay increment t(d) while the mobile station is in a prelminary state of receiving the downward transmission signal as a downward reception signal first from the base station and is in a steady state, respectively. The signals may ba propagated through at least one communication satellite.

Abstract: From a paging station a radio display pager receives a sequence of repeat calls and non-repeat calls. Each of the repeat and non-repeat calls contains a message and a message number identifying the message, the same message numbers being repeated for the repeat calls of the sequence. The message numbers of received calls are stored in a first memory. A currently received call is compared with each of the previously stored calls to detect a mismatch. Upon detection of the mismatch, a lost call detector determines the message number of a lost call which may exist between the currently received call and a call stored last in the first memory. The determined message number is stored into a second memory as a lost message number. The stored lost message number is erased if a call bearing the same message number is received. The lost message number that remains in the second memory is put on display to allow the owner of the pager to inform the system center of the lost message number to obtain the lost message.

Abstract: In order to detect a paging channel assigned to a pager in a shorter time in a frequency divided pager network system, a plurality of paging channels given priorities in channel searching are separately assigned to the paging areas in a manner wherein reuse in adjacent paging areas is avoided. A frequency subset number and frequency subset indicators related thereto, are stored in a memory in a pager. Subsequently, paging channels available in the system are allocated to the frequency subset indicators. Further, a relationship between the frequency subset indicators and the corresponding paging channels is arranged in the form of a table and then stored in the pager. Then, the paging channels are assigned to the paging areas according to the relationship. The above mentioned paging channels given priorities in channel detection are monitored so as to detect which priority channel is transmitted to the pager.

Abstract: Only while correct passwords are supplied to a comparator (21) of a password processing device to put a utilization device (11) into operation, a processor (25) processes password information into a processed datum. If a foreign, incorrect password supplied to the comparator the utilization device is not put into operation, and the foreign password is stored in a memory (17) as a stored datum and is processed into the processed datum. If consecutively supplied, such foreign passwords are successively used in the stored datum. The processed datum is thereby rendered undefined. Preferably, the password information makes the processed datum twice or five times indicate a unique password. The utilization device is typically a receiver circuit of a selective call radio receiver.

Abstract: In a radio communication apparatus comprising a demodulator (12) for demodulating a multilevel modulated signal (10) into a time sequence of multilevel symbols which have symbol levels to define a variable pattern by a level difference between the symbol levels of at least two successive adjacent ones of the multilevel symbols, a coincidence detecting section (16) detects coincidence between the variable pattern and a predetermined pattern and calculates judgement levels when the variable pattern coincides with the predetermined pattern with a tolerance. A multilevel-to-binary converter (14) converts the time sequence of multilevel symbols into a binary signal of binary values by judging the symbol levels on the basis of the judgement levels. Preferably, a variation following level calculating section (30) calculates variation following levels for use as the judgement levels by using the symbol levels, the binary values, and the judgement levels.