KR960001582B1 - Pager and radio telephone apparatus - Google Patents

Abstract

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Description

[Name of invention]

Pager and Cordless Telephone Combination Device and Its Control Method

[Brief Description of Drawings]

1 is a block diagram of a pager and a radiotelephone device 100 embodying the present invention.

FIG. 2 is a flow chart for the process executed by the microcomputer of the cellular transceiver 104 of FIG.

3 is a schematic diagram of the interface circuitry 108 of the pager and radiotelephone device of FIG.

Detailed description of the invention

[Field of Invention]

The present invention relates to both the paging industry and the cellular radiotelephone industry.

[Background of invention]

Paging systems are typically unidirectional wireless communication systems. Individuals wishing to communicate with pager users typically access a central page control by calling a central telephone number. Central paging control can be operated automatically or by an operator. If automatic, the caller keys the number assigned to the personal pager they want to reach. Once the pager is accessed, the caller can leave a paged personal voice message or key in the phone number displayed on the pager's display. Some systems can allow two forms of paging.

If central paging control is operated by the operator, the caller typically tells the operator the pager number and message. The operator then pages the person and, when invoking the operator of the paged person, relays the message.

Once paged, the individual must find a phone to answer the page. The problem can be solved by a paged individual with a cellular wireless telephone. Wireless telephones allow mobile users to make or receive calls anywhere within the area covered by the cellular communication system antenna.

One problem with wireless telephony is that wireless telephone users typically pay for incoming calls as well as outgoing calls. Therefore, if an unwanted call is made to a wireless telephone, the wireless telephone user has to pay for the call at a much higher rate than receiving the page. Therefore, the pager eliminates the charge for unwanted calls by allowing the receiving party to screen the incoming call to determine its phone number to call back.

The pager solves the limitations of cellular radiotelephones and the reverse is also the same, causing the problem of moving the two communication devices to be in contact while moving the area. Therefore, there is a need for a single device that combines the advantages of both cellular wireless telephones and pagers.

[Summary of invention]

The present invention includes a pager and a wireless telephone device that combines a wireless pager and a cellular wireless telephone into one unit, which automatically receives a plurality of pagers to communicate cellular telephone calls while the cellular telephone is on; It is left off.

DESCRIPTION OF THE PREFERRED EMBODIMENTS

The radiotelephone and wireless device 100 shown in FIG. 1 and embodying the present invention combines the radio pager 102 and the cellular radiotelephone unit 104 into one compact, lightweight unit. An example of a wireless pager 102 is the pager described and shown in Motorola designation manual No. 68P81006 B85-0 entitled "BRAVO SERIES Numeric Display Pagers A05JRB / C Models 929-932MHz" and "SENSAR SERIES GSC Display Radio Pagers A05JRB". / C Models is a pager described and illustrated in Motorola Designated Manual No. 68P81044C 10-A, entitled " 450-470 MHz ". One example of a radiotelephone 104 is a mobile radiotelephone described and shown in Motorola designation manual No. 68P81054E60-0 entitled “DYNATAC Cellular Portable Telephone”. All of the above designated manuals are published and used by Illinois 60196, Schaumburg, East Algonquin Road 1313, Motorola C & E Parts.

One antenna 106 is shared by both the pager portion 102 and the wireless telephone portion 104. The antenna 106 is coupled to the front end receive filter 11 at the receive 125 and transmit 126 filters to the wireless telephone section 104 and the wireless pager 102 via a microstrip transmission line.

From the front end filler 111, the received signal, having a frequency of 930 MHz in the preferred embodiment, is amplified by the preamplifier 112 and filled by the filler 113 to the phaser portion 102. The crystal oscillator 115 signal of 73.57 MHz is multiplied by a factor of 12 in the multiplier 116 resulting in an 885 MHz injected signal that is mixed in a mixer 114 having a 930 MHz signal from the front end filler 111. The result is a 45 MHz signal. A 45 MHz crystal filter 117 attenuates the signal above and below the 45 MHz RF carrier and the resulting signal is demodulated by the intermediate frequency circuit 118 into a 455 MHz signal. The signal is then input to the interface circuit 119 at the pager 102.

The interface circuit 119 of the phaser portion 102 interfaces the input signal to the microcomputer 121 in addition to directing the signal and providing power control to the rest of the phaser portion 102. The microcomputer 121 includes a stack for storing incoming pages. In the preferred embodiment, the microcomputer 121 can store ten telephone numbers, although any of the telephone numbers can be stored by changing the stack size. The microcomputer 121 also controls the pager unit 102. Non-volatile memory, known in the art as a code plug 120, has a confirmation number assigned to a special pager portion 102 in addition to the selection used for the pager. The paging signal or page sent to pager 102 includes a confirmation number and a phone number. Each time pager 102 is turned on, microcomputer 121 reads the data stored in code plug 120 and uses the read-out confirmation number to select the page received on the 930 MHz paging channel. do.

The pager telephone interface circuit 108 shown in FIG. 3 interfaces the pager unit 102 to the wireless telephone unit 104. The circuit uses the Motorola MC14517B integrated circuit, which is a 128-bit shift register 302 for storing pages from the pager, and the Motorola MC14013BD integrated circuit, which is a dual D-type flip-flop for controlling the power state of the pager 102. It includes. The flip-flop is also used by the pager unit 102 to give the wireless telephone unit 104 an indication received as a page. In addition, a power-on LED 303 for the pager portion 102 is also included at the interface 108.

The wireless telephone unit 104 is composed of a microcomputer 124, a receiver 122 and a transmitter 123 controlled by a Motorola-type 68HC11 microcomputer in the embodiment. The microcomputer 124 is coupled to an indication 128 for displaying telephone numbers and status messages, and to control the operation of the radiotelephone unit 104, such as recall, clear and transmit pushbuttons. It is coupled to a keypad 127 having numeric pushbuttons for dialing buttons and telephone numbers. I / O bus 110 couples the microcomputer 124 of the radiotelephone to the pager / telephone interface circuit 108. The reception filter of the radiotelephone unit 104 is coupled to the radiotelephone receiver 122. The wireless call signal received by the receiver 122 is routed to the microcomputer 124 for processing. The wireless telephone call made by the wireless telephone section 104 is routed by the microcomputer 124 to the transmitter 123 coupled to the transmission filter.

The process performed by the microcomputer 124 in the pager and wireless telephone unit 104 of the wireless telephone device 100 is shown in FIG. When device 100 receives a page 201, it is stored in a stack of pager microcomputer 121. The page data is in a format that includes a symbol such as a hi-phone in addition to the telephone number to be called. After the page data is stored, the page receive indicator clocks high with D flip-flop 301 by quickly toggling the output of the comparator from slowing down. The output to D flip-flop 301 sets the page received line (PG RCVD) high and the ON / PFF line low. If wireless phone 104 is off 202 when a page is received, the ON / OFF line lowers the power up to inform the user that the page has been received and to give the user an opportunity to respond to the page. (203). Additionally, the power-on flag is set so that the barge phone later knows it is powered up by the pager. If the wireless telephone section 104 is already on when the ON / OFF line goes low, the signal is ignored by the 68CH11 microcomputer 124 (204). The page counter in the 68HC11 microcomputer 124 is increased (205), allowing the device to keep track of the high stack in the microcomputer of the pager section.

After the wireless telephone unit 104 is turned on, the appropriate message is displayed on the display 128 of the device announcing the page reception. In addition, the announcement tone is turned on to audibly notify the user of the page. In a preferred embodiment, the tone is turned on for ten short bursts. If a page is received and the microcomputer stack of the pager section is not full, the message "page" is displayed. If the last page is received with a full stack, the message "PAGFULL" is displayed. Other messages can be used too. For example, if two pages are received and the microcomputer stack of the pager portion is not full, the message "two pages" may be displayed. The tone received from the normal page and other announcement tones are used to inform the user aurally that the memory is full. If the last page received overflows the stack, making the number of pages received greater than 5, the message "OVERELO" is displayed. The last message will be displayed for each successive page received that overflows the stack.

Once the user knows that the page exists (206), the action by the user needs to move from the pager portion 1020 to the radiotelephone memory for display or dialing. In the example, if not accepted by the user within 6 seconds, the power-on flag is checked to determine if the pager is turned on in the wireless phone 104. If the flag is set, the wireless phone 104 protects battery power. While the pager portion remains to be powered down 211. The unset flag indicates that the user is turning on the radiotelephone 104 and leaves it there.

The user has three choices to respond to the page using the keypad 127: Recall push button (RCL) recalls the page to the device's indication, and clear (CLR) pushbutton displays the device indication and the wireless phone section. The page is cleared from the scratchpad memory, and the send (SND) push button calls the page telephone number stored in the scratchpad memory. If the wireless phone 104 is powered down without a response by the user, while the pager 1020 is powered up, the page data will be stored in the microcomputer 121 stack for later use. When powered up again, a "page" will be displayed to inform the user that the page is waiting.Powering down the wireless phone unit 104 with the pager unit 102 still powered up will cause the pager unit 102 to still power down. Power is commercialized by generating a unique tone that is emitted to indicate that it is on.

When the SND, CLR, or RCL pushbuttons are activated (209), every page (i.e. phone number) in the microcomputer stack 121 of the pager portion is moved from the stack in the pager / telephone interface circuit 108 to the register 302. To move one page at a time. Initially, a memory pointer in the microcomputer 121 is set to point to the first page in the stack. The page data is transferred to the shift register 302 by clocking the page data as a bidirectional PGR CLK line on the PGR data line. Once the page data is in the shift register 302, the wireless telephone unit 104 may use the same clock to clock page data from the shift register 302 on the data line PHN DATA to the non-volatile memory of the microcomputer 124. Line (PHN CLK) can be used. The PGR RESET line is pulsed to move the memory pointer to the next page or next part of the first page and the memory transfer operation is repeated (each page can have two parts). As the page data is clocked into the non-volatile memory of the wireless telephone section 104, it is decoded to remove all non-numeric symbols. The page counter is decremented after each page is clocked into the memory of the radio telephone unit. It continues until the page count goes to zero.

Once the telephone number of each page is stored in the non-volatile memory of the wireless telephone section 104, an activated pushbutton is processed 210 to determine what to do with the telephone number. Regardless of which pushbutton is in, the most recent phone number will go to the wireless phone's scratchpad memory while the other phone number will remain in non-volatile memory. When the SND pushbutton is activated, the phone number is called from scratchpad memory. When the CLR pushbutton is activated, the scratchpad memory is cleared but the phone number stored in non-volatile memory will be left for later recall. When the RCL pushbutton is activated, the scratchpad memory will be displayed but not called. Other locations in the scratchpad memory can be recalled by operating the RCL pushbuttons according to the numerical pushbuttons.

Once all page data has been moved out of the pager section 102, the pager on / off line is pulsed momentarily high by the 68HC11 microcomputer 124 to toggle the D flip-flop 301, thus, the pager section 120 Turn off). It clears the page stored in the microcomputer 121 of the pager section. The pager ON / OFF line pulses again to turn on the pager 120 on.

Those skilled in the art will appreciate that various aspects of the invention may be varied while still remaining within the scope of the invention. The change includes the time when the wireless telephone unit is turned on, the number of telephone numbers stored in the wireless telephone unit, and the number of pages stored in the microcomputer stack. In summary, a wireless telephone / pager coupling device is shown that allows operation in both a wireless telephone and a paging system.

Claims (5)

A pager means for receiving a plurality of wireless paging signals each having a telephone number having at least one digit on a paging wireless channel, and coupled to the pager means via an interface having a register for storing the telephone number and wirelessly transmitting a wireless telephone call signal. A method of controlling a pager and a radiotelephone combining apparatus having at least recall and transmit pushbuttons transmitted over a telephone channel, the method comprising: receiving and storing a plurality of radio paging signals each having a telephone number having at least one digit at a paging means; Generating a display signal when each paging signal has been received by the paging means, moving the stored telephone number from a paging reception to a register in response to a control signal, and displaying and receiving the signal by the cellular transceiver means. In response to the number of paging signals Counting, generating a control signal in response to the recall or transmission pushbutton operation, moving the stored telephone number from a register to the cellular transceiver means, and in response to the operation of the transmission pushbutton, And transmitting the radio telephone call signal using the telephone number last received and read out by the cellular transceiver means. A pager and a wireless telephone combination apparatus for receiving a paging signal on a paging wireless channel by communicating a wireless telephone call signal on a wireless telephone channel, the apparatus comprising: an antenna for receiving a paging signal and communicating a wireless telephone call signal; A first filter means for receiving a paging signal on a channel and memory means for storing a received paging signal each having a telephone number as at least one digit, and further comprising a display signal upon receipt of each paging signal, the first control signal A pager means for reading out the stored telephone number in response to and clearing the memory means in response to a second control signal, coupled to the pager means to at least a transmit pushbutton and a recall pushbutton, and coupled to an antenna for cellular A second filter for receiving a wireless telephone call signal on a wireless channel And counting the number of paging signals received in response to each display signal, and allowing the pager means to read out the counted number of stored telephone numbers from the memory means in response to the operation of the recall call button. 1 generating a control signal and thereafter generating a second control signal to enable the pager means to clear the memory means, and using one of the read-out phone numbers in response to the operation of the transmit pushbutton, A cellular source for transmitting, a power source for generating a voltage set for powering the cellular transceiver means, a voltage source for connecting to the pager means, the cellular transceiver means, and a power source, the set voltage for powering a pager means Of regulation to regulate voltage to low voltage To have, a pager and a radio telephone coupled device comprising the interface circuit having a memory register for temporarily storing the read out telephone number from the memory means more. 3. A pager and radiotelephone coupling device according to claim 2, wherein the antenna is coupled to the first filter means by a transmission line. 3. A pager and radiotelephone coupling device according to claim 2, wherein the antenna is coupled to the second filter means by a transmission line. 3. The pager and radiotelephone combination apparatus according to claim 2, wherein the second filter means comprises a reception filter and a transmission filter, each coupled to the antenna by a separate transmission line.