JP2690687B2 - Radio selective call receiver - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a radio selective call receiver capable of producing a beep sound (BEEP sound) as well as a melody sound as a ringing sound (alert sound) for alerting a call.

[0002]

2. Description of the Related Art A conventional radio selective call receiver of this type will be described with reference to a block diagram of an example of the radio selective call receiver according to the present invention shown in FIG.

In this radio selective calling receiver, the antenna 1 receives F data by a selective calling signal from a transmitting station of a paging system and a data signal including a message signal following the selective calling signal.
SK (Frequency Shift Keyin
g) Receive a modulated radio signal. This radio signal is amplified by the receiving unit 2 and further demodulated into a baseband data signal including the selective calling signal, the message signal, and the like. The demodulated selective calling signal and data signal are decoded by the decoder 3. The decoder 3 uses the decoded selective calling signal and an ID (EEPROM (Read Only Memory for electrically erasable program))
-Compare with the selective call number of its own, which is stored in the ROM 13 and read through the control unit 5. If the two match, the decoder unit 3 outputs the decoded data signal to the control unit 5.

The control section 5 is a CPU (Central Processing) for processing the above-mentioned data signals.
Unit) 53 and program ROM (Read O
nly Memory) P-ROM 51 and RAM (Ra
Nodm Access Memory) 52. When the control unit 5 receives the data signal, the P-RO
The sound data stored in M51, RAM52, EEPROM (not shown) or the like is sent to the alert unit 8. The alert unit 8 processes the sound data as described later to generate a sound signal. The alert driver 9 amplifies the sound signal to cause the speaker 10 to sound a ringing sound, and informs the receiver carrier that there is a call. The ringing tone includes a beep tone and a melody tone set by the user of this receiver. The control unit 5 also sends a signal for driving the vibrator 11 and causing the LED (light emitting diode) 12 to emit light, but details thereof will be omitted. In addition to the sound data, the P-ROM 51 also stores optional function selection data of the receiver, programs, character fonts, and the like.

When the control unit 5 receives from the decoder 3 a message signal sent after the selective call signal, the LC unit
The D driver 6 is driven to drive an LCD display unit (display unit using a liquid crystal display plate: Liquid Crystal Dis).
The display 7 displays the message having the content corresponding to the message signal. The received message signal is stored in the RAM 52 at the same time as the display, and can be read out to the LCD display unit 7 later by operating the switch unit 4. The switch unit 4 has a function of interrupting the CPU 53.

Here, the ringing tone data sent by the control section 5 is a parallel format digital signal composed of pattern data and ringing tone frequency data corresponding thereto. The pattern data specifies "1" when there is a sound and "0" when there is no sound. The minimum unit of one pattern is determined by the type of sound, and normally 25 to 250 milliseconds is one unit. A sounding pattern is formed by making a plurality of these patterns continuous. For example, the pattern data “101
“0” means that the sound is beeping and “11101110” is beeping.

On the other hand, the frequency data is data indicating the scale of the melody tone. If the frequency data has a 3-bit structure, (0,0,0) is “do”, (0,0,1) is “re”, ..., (1,1,1) is one octave higher than the above. Can be assigned. When this 3-bit frequency data is input to the alert unit 8, the alert unit 8
Produces a ringing tone signal having a frequency corresponding to the scale. For example, when the frequency data having the bit configuration (0, 0, 0) is supplied, the alert unit 8 has a frequency of 1.01 KHz corresponding to the scale of "do" (the accurate frequency representing the scale of "do" is 1. Although it is 038 KHz, since the timing clock to be used is composed of an inexpensive circuit, in this embodiment, a tone signal of "do" is set to 1.01 KHz), and a bit configuration (1, 1, 1) is generated. When the frequency data of 1) is supplied, a tone signal having a frequency of 2.02 KHz, which corresponds to the "do" scale one octave above, is generated. In the case of the beep sound data, the sound signal may have only one frequency.

FIG. 2 is a block diagram showing in detail a part (tone signal generation unit) of an example of the alert unit 8 used in the radio selective call receiver of FIG.

The alert unit 8 is supplied with the sound data, the chip select signal and the timing clock from the control unit 5 which receives the data signal. Alert part 8
Prepares a latch circuit (x) 81 and a latch circuit (y) 82 for temporarily storing the pattern data of the sound data, and a latch circuit (X) for temporarily storing the frequency data.
83 and a latch circuit (Y) 84 are prepared. The latch circuit (x) 81 and the latch circuit (X) 83 are used as a pair, and the latch circuit (y) 82 and the latch circuit (Y) 84 are used as a pair. The latch circuits 81 to 84 are 1
You can store ringing data that can ring the time slot. For example, one time slot is set to 1 second.

The latch circuits 81 to 84 determine whether or not the sound data can be stored by selecting the chip select signal. The latch circuit selected by the chip select signal stores the supplied sound data. Now, the chip select signal selects the latch circuit (x) 81 and the latch circuit (X) 83, and the sound data (a, A) for the sound data 1 time slot, which is the pattern data a and the frequency data A, is respectively selected. If supplied, the latch circuit (x) 81 stores the pattern data a and the latch circuit (X) 83 stores the frequency data A. The latch circuit (y) 82 and the latch circuit (Y) 84 are selected to store the sound data for the next time slot,
If the sound data (b, B) are respectively supplied,
The latch circuit (y) 82 stores the pattern data b, and the latch circuit (Y) 83 stores the frequency data B.

The tone data from the latch circuit and the timing clock from the control unit 5 are supplied to the logic circuits 85 and 86. The logic circuit 85 converts the pattern data sequentially read out from the latch circuit (x) 81 and the latch circuit (y) 82 such as the data a and the data b into the serial format digital signal by the timing clock, and then outputs the sound pattern. Produces a sounding signal transmission timing signal that is equivalent to The timing clock is generated by the decoder 3 and sent to the control unit 5.

On the other hand, the logic circuit 85 decodes the frequency data sequentially read out as data A and data B from the latch circuit (X) 83 and the latch circuit (Y) 84 by the timing clock, and corresponds to this frequency data. Generates a frequency division number specifying signal. Variable frequency divider 84
Divides the timing clock by a frequency division number corresponding to the frequency division number designating signal to generate a tone frequency signal. For example, the frequency data indicates a frequency of 1.0 indicating a scale "do".
The variable frequency divider 84 divides the timing clock by 38 when it is a signal designating 1 KHz and the timing clock is a 38.4 KHz clock that can be generated by an inexpensive circuit used in a general radio selective call receiver. Then 1.
A sounding frequency signal of 01 KHz is generated.

The sending timing signal and the sounding frequency signal are supplied to the logical operation unit 88, and the logical operation unit 88 produces a sounding signal that sounds at the sending timing of the sending timing signal. This sound signal is alert driver 9
The alert driver 9 causes the speaker 10 to beep or emit a melody when the radio selective call receiver receives a call.

FIG. 4 is a diagram showing the input timing of sound data to the latch circuits 81 to 84 of the alert section 8 and the sound timing of the speaker 10 in the conventional radio selective call receiver.

Referring also to FIGS. 1, 2 and 4,
At time t0, the control unit 5 sends a ringing command signal including ringing data composed of pattern data and frequency data and a chip select signal to the alerting unit 8 collectively for two ringing times of the ringing. Supply. The timing clock is always supplied. Then, the alert unit 8 causes the latch circuit (x) 81 to output the pattern data a,
Sound data (a, A) and (b, B) such as pattern data b in the latch circuit (y) 82, frequency data A in the latch circuit (X) 83, frequency data B in the latch circuit (Y) 84, and so on. Store sequentially. This storage time Tα is
If the ringing 2 time slot is 2 seconds, the current technology requires several tens of milliseconds.

When the sound data is stored in all of the latch circuits 81 to 84 provided in the alert section 8, the sound starts. That is, the logic circuits 85 and 86
First, the latch circuit (x) 81 and the latch circuit (X) 8
3, the ringing tone data (a, A) is read during the period of the time slot T1 to cause the speaker 10 to ring the ringing tone corresponding to the ringing tone data (a, A). Then, the logic circuit 85
And 86 read the ringing tone data (b, B) from the latch circuit (y) 82 and the latch circuit (Y) 84 during the period of the time slot T2, and output the ringing tone corresponding to the ringing tone data (b, B). Cause the speaker 10 to ring.

When the sounding data stored in all the latch circuits 81 to 84 are read by the logic circuits 85 and 86, the decoder 3 counting the timing clock of this reading, the control unit 5 at the beginning of the time slot T3. And sends an interrupt signal to the CPU 53. CPU53
Is interrupted, the control unit 5 causes the sounding time slot T
3 and T4 sound data (c, C) and (d,
D) and the chip select signal are successively sent out, and the latch circuits 81 to 84 overwrite these sound data (c, C) and (d, D) on the sound data (a, A) (b, B). Then, the memory is completed within the time Tα. By repeating the collective storage of the tone data by the latch circuits 81 to 84 described above and the sequential reading of the stored tone data, a long-term tone like a melody tone is realized.

In this conventional radio selective calling receiver, the ringing data is stored and read in the latch circuit in the initial stage of the ringing time slot in which the CPU 53 is interrupted, for example, in the initial stage of the time slot T3. Since no new ringing tone data is stored in the latch circuits 81 to 84, there is a phenomenon that the ringing tone to be continued next is interrupted even for a moment. Further, at this time, since the ringing data for the time slots T1 and T2 is stored in these latch circuits, the logic circuits 85 and 86, for a moment, are the ringing data for the time slots T1 and T2. There is a phenomenon that reads out and makes an abnormal sound.

[0019]

The above-mentioned conventional radio selective calling receiver has a drawback that the ringing tone to be smoothly sounded is instantaneously interrupted at regular intervals.

Further, this conventional radio selective calling receiver is
Since the same ringing sound may occur repeatedly, there is a drawback that the ringing sound becomes annoying especially when the ringing sound is a melody sound.

[0021]

A radio selective calling receiver according to the present invention comprises a receiving section for receiving and demodulating a radio signal modulated by a data signal including a selective calling signal, and the demodulated selective calling signal and A decoder which compares the stored selective call signal stored therein and outputs the decoded data signal when the two coincide with each other, a control unit which transmits prestored ringing data when the data signal is received, and the ringing data In the radio selective call receiver having at least a notification unit for causing a ringing sound based on the ringing data to be sounded according to the control of the control unit, the notification unit sets the ringing period of the ringing sound to a plurality of time slots. A plurality of ring tone data temporary storage means capable of temporarily storing the ring tone data of any one of the divided time slots, and read from the ring tone data temporary storage means. At least a ringing sound notification unit for ringing the ringing tone based on the ringing sound data, wherein the control unit outputs the ringing sound data in a time slot before a reading time slot of this ringing data. Selection means for sequentially storing the sound data in the sound data temporary storage means capable of storing the sound data, and the sound notification unit for the sound data stored in the sound data temporary storage means in a correct sound time slot And sound data reading means for reading the data.

In one of the radio selective calling receivers, each time the selecting means generates the ringing data temporary storage means capable of storing the ringing data, the ringing data is stored in the ringing data temporary storage means. Can be sequentially stored.

In another one of the radio selective calling receivers, the ringing data includes pattern data showing a ringing pattern of the ringing tone and ringing frequency data showing a ringing frequency of the ringing tone. The sound data temporary storage means,
A latch circuit for storing the ringing data divided into the pattern data and the ringing frequency data, which is instructed to be written by a chip select signal from the control unit,
The ringing notification section receives the pattern data and the ringing frequency data from the latch circuit, and outputs a ringing tone of a ringing frequency corresponding to the ringing frequency data in the ringing pattern corresponding to the pattern data. The resulting configuration can be taken.

[0024]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the present invention will be described with reference to FIGS. 1, 2 and 3.

The wireless selective receiver shown in FIGS. 1 and 2 has the same configuration as the conventional wireless selective receiver in terms of hardware, even in the embodiment of the present invention. However, the radio selective call receiver of the present embodiment is different from the receiver according to the related art in the operation of storing ringing data in the latch circuit of the alert unit 8. In the following description of the embodiments of the present invention, the description of the same parts as those of the conventional art will be omitted.

FIG. 3 shows the latch circuits 81 to 8 of the alert section 8 in one embodiment of the radio selective calling receiver of the present invention.
4 is a diagram showing a timing of inputting sound data to the No. 4 and a timing of sounding in the speaker 10. FIG.

Referring to FIGS. 1, 2 and 3 together,
At time t0, the control unit 5 sends a ringing command signal including ringing data composed of pattern data and frequency data and a chip select signal to the alerting unit 8 collectively for two ringing times of the ringing. Supply. Then, the alert unit 8 has the pattern data a in the latch circuit (x) 81, the pattern data b in the latch circuit (y) 82, the frequency data A in the latch circuit (X) 83, and the latch circuit (Y) 8.
Sound data (a, A) such as frequency data B in 4
And (b, B) are sequentially stored. As described above, the storage time Tα for two sounding time slots requires several tens of milliseconds in the present technology.

When the sound data is stored in all of the latch circuits 81 to 84 provided in the alert section 8, the sound starts. That is, the logic circuits 85 and 86
First, the latch circuit (x) 81 and the latch circuit (X) 8
3, the ringing tone data (a, A) is read during the period of the time slot T1 to cause the speaker 10 to ring the ringing tone corresponding to the ringing tone data (a, A). Then, the logic circuit 85
And 86 read the ringing tone data (b, B) from the latch circuit (y) 82 and the latch circuit (Y) 84 during the period of the time slot T2, and output the ringing tone corresponding to the ringing tone data (b, B). Cause the speaker 10 to ring.

Here, when the time slot T1 ends due to the completion of reading the sound data (a, A) stored in the latch circuit (x) 81 and the latch circuit (X) 83,
The decoder 3 starts the C of the control unit 5 at the beginning of time slot T2.
An interrupt signal is sent to PU53. Note that the decoder 3
Can know the end of each time slot by counting the timing clock in each read time slot of the sound data, and interrupt the CPU 53 at a constant interval at each end of each time slot. The sending of the interrupt signal to the CPU 53 can also be realized by program software. When the CPU 53 is interrupted, the control unit 5 causes the sounding time slot T3.
The ringing tone data (c, C) and the chip select signal are transmitted, and the latch circuit (x) 81 and the latch circuit (X) 8 are sent.
3 completes storing the sound data (c, C) within about time Tα / 2. It should be noted that the storage operation of the sound data (c, C) is executed concurrently with the reading of the sound data (b, B). Further, the reading of the sound data (b, B) from the latch circuit (y) 82 and the latch circuit (Y) 84 is automatically performed by the above-mentioned timing clock.
The PU 53 and the other latch circuits 81 and 83 are not used.

As described above, the sound data (c, C) is
The sound data (c, C) is stored in the latch circuit (x) 81 and the latch circuit (X) 83 in the time slot T2 before the time slot T3 to be read starts. Therefore, after the tone data (b, B) is read from the time slot T2, the tone data (c, C) can be read from the beginning of the time slot T3.
Similarly, the sound data (d,
D) is stored in the latch circuit (y) 82 and the latch circuit (Y) 84 during the time slot T3, and the sound data (e, E) for the time slot T5 is latched in the latch circuit (x) 81 during the time slot T4. And stored in the latch circuit (X) 83.

As described above, in the radio selective calling receiver, while the sound data is being read from any latch circuit, the data read is completed and the next time slot is stored in the latch circuit capable of storing the sound data. The sound data of is stored. Since this is repeated to make the sounding for a long time, the reading time of the sounding data from the latch circuit and the timing of storing the sounding data in the latch circuit do not overlap with each other. Therefore, in this radio selective calling receiver, there is no phenomenon in which interruption and duplication of ringing sounds occur for a moment.

Although the radio selective calling receiver of the above-described embodiment is provided with only two sets of latch circuits for temporarily storing ringing data, the ringing period, the data capacity of the latch circuits 81 to 84 that can be prepared, and the CPU 53. Three or more sets may be provided depending on the signal processing performance of FIG. In the case of such a configuration, as in the above-described embodiment, it is not necessary to store the next ringing sound data in the latch circuit each time the reading of the ringing sound data stored in the latch circuit is completed. It suffices that the time slot to be made is a time slot before the read time slot of this sound data. This has the effect of increasing the degree of freedom of operation of the CPU 53.

[0033]

As described above, according to the present invention, the ringing tone data sent out by the control unit is stored in the ringing tone data temporary in which the ringing tone data can be stored in the time slot before the reading out time slot of this ringing tone data. Since the sound data is sequentially stored in the storage means, the time for reading the sound data from the sound data temporary storage means and the timing for storing the sound data in the sound data temporary storage means do not overlap. Therefore, this radio selective calling receiver has an effect that the ringing tone can be smoothly generated without interruption or duplication of the ringing tone.

The above-described effect eliminates a ringing sound that is offensive to the user of the receiver, especially when the ringing tone is a melody sound.

[Brief description of the drawings]

FIG. 1 is a block diagram of an example of a radio selective calling receiver according to the present invention.

FIG. 2 is a block diagram showing in detail a part of an example of an alert unit 8 used in the radio selective calling receiver of FIG.

FIG. 3 is a diagram showing the timing of inputting sound data to the latch circuits 81 to 84 of the alert unit 8 and the timing of sounding in the speaker 10 in the embodiment of the radio selective calling receiver of the present invention.

FIG. 4 is a diagram showing a timing of inputting sound data to the latch circuits 81 to 84 of the alert section 8 and a timing of sounding in the speaker 10 in the conventional radio selective calling receiver.

[Explanation of symbols]

 1 Antenna 2 Receiver 3 Decoder 4 Switch 5 Control 6 LCD Driver 7 LCD Display 8 Alert 9 Alert Driver 10 Speaker 11 Vibrator 12 LED 13 ID-ROM 51 Program ROM (P-ROM) 52 RAM 53 CPU 81 ~ 84 Latch circuit 85, 86 Logic circuit 87 Variable frequency divider 88 Logical operation unit

Continuation of the front page (56) References JP-A-61-256836 (JP, A) JP-A-63-288526 (JP, A) Fukuihei 4-19040 (JP, U)

Claims (3)

(57) [Claims] And 1. A receiver for receiving and demodulating a radio signal modulated by a data signal including a selective call signal, the said selective calling signal demodulated is decoded with matches to the self selective calling signal Decoder that outputs the data signal and sound
And sounding data storage means for previously storing the data in a wireless selective calling receiver having at least a notification unit for sound ringing a calling tone based on the receive data signal when pre Symbol ringing data, the notification means, wherein A plurality of ring data temporary storage means capable of temporarily storing the ring data of one time slot of the ringing period of the ringing tone divided into a plurality of time slots, and the ring data storage means when receiving the data signal.
The sounding sounding data 1 is to memorize reads serial <br/>憶possible the sounding data temporary memory means in a time slot unit in a previous time slot from ringing time slots
A data reading means, storing the ringing sound data temporary memory means
The correct the sounding data ringing sound timeslots
And sounding control means reading out of in, read the ringing Day
And a ringing sound notifying unit for ringing the ringing sound based on the wireless selective calling receiver. Wherein said sounding data reading means, the ringing data read data from the previous SL sounding data temporary memory means
This can be memorized at the end of each imslot
Radio selective call receiver according to claim 1, characterized in that sequentially stores <br/> the ringing data ringing time slot after the sounding data temporary memory means has. 3. The ringing data comprises pattern data showing a ringing pattern of the ringing tone and ringing frequency data showing a ringing frequency of the ringing tone, and the ringing data temporary storage means, Hands for reading the sound data
A latch circuit that is instructed to write by a chip select signal from the stage and stores the sound data separately into the pattern data and the sound frequency data, and the sound notification unit outputs the pattern from the latch circuit. 2. The wireless selection according to claim 1, wherein the ringing tone of the ringing frequency corresponding to the ringing frequency data is generated in the ringing pattern corresponding to the pattern data, by receiving the data and the ringing frequency data. Call receiver.