JPH02500154A - Paging system with assignable battery saver duty cycle - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] Paging system with assignable battery saver duty cycle Mu Background of the invention The present invention generally provides a battery suitable for use with wireless paging communication systems. Regarding the battery saving method, for more details, please refer to the assignable battery saver design. Wireless paging communications including selective call paging receiver with utility cycle Regarding the system.

Wireless paging including selective call paging receiver with battery saving operation Google communication systems are widely used today. Tone encoding and digital encoding A battery saving mechanism is used together to save the battery of various systems. Bing performance characteristics. These current communication systems are generally N-type battery size and suitability for paging receivers that utilize larger batteries. It has provided cutting-edge saving movements. However, wrist-worn pagers/ Like a clock device, the small physical size and shape of the paging device This precludes the use of batteries larger than Tancells. Therefore, quite large In systems with paging receivers that incorporate Although the teri-saving performance is adequate, these systems are similar to button cell batteries. unsuitable for paging devices operating from extremely limited energy sources, such as It is.

One proposed solution to this problem is that the pager/clock device is reduced. simply extending the amount of time it will operate at a lower power consumption level. Such a system The device will probably only be used for a short period of time at much longer intervals than 15 minutes. Restrict operations. Such a system is not widely accepted as mentioned above. However, most discerning paging users are concerned with system response time, i.e. The paging call is received by the paging receiver from the time the paging call is received. Because we expect the time interval to be on the order of 2 minutes or less It is. A solution like the one proposed is a system response time for the entire paging system. would increase the time and would be totally unacceptable. The proposed system is also very effective. Although it is inefficient and expensive, it is a large number of paging call and message queues must be provided. That's because there isn't. Not only is such a solution uneconomical, but it also It is certain that this will cause dissatisfaction. The system as a whole has a short message queue. - and rapid system response times must be maintained. This problem is this How can we meet these needs and do so with extremely limited energy sources? For all paging receivers in the system, including operational paging devices. how to balance the need for adequate battery life cycles for That is true.

Summary of the invention An object of the present invention is to provide a system that provides improved battery life for paging receivers. The present invention is to provide stems and devices.

Another object of the present invention is to selectively improve battery life based on the battery in use. The purpose of this invention is to provide systems and devices that perform the same steps.

Yet another object of the present invention is to provide selective battery life improvement while The objective of the present invention is to provide systems and devices for maintaining system throughput.

Yet another object of the invention is to provide a page with a battery of limited energy content. To provide a system and apparatus that minimizes inconveniences in the operation of a It's there.

Yet another object of the invention is to provide a selection method for both the terminal and the paging receiver. systems and devices that provide a variety of battery-saving performance options. There are many things.

Yet another object of the present invention is to An object of the present invention is to provide a system and apparatus that provides battery-saving operation.

Yet another object of the present invention is to combine multiple battery savers within the same system. The objective of the present invention is to provide a system and apparatus that allows a duty cycle of

These and other objects and advantages of the invention will be apparent from the following description of the invention and the accompanying drawings. will be clear to those skilled in the art from consideration of the aspects.

Brief description of the drawing The features of the invention believed to be novel are particularly pointed out in the appended claims. . The invention itself, together with other objects and advantages, is incorporated herein by reference in conjunction with the accompanying drawings. It can be best understood by referring to the following description, which also includes some drawings. Like reference numbers refer to like elements.

Figures 1A to 1C are explanatory diagrams of conventional battery saving systems. Ru.

FIGS. 2A through 2C illustrate a battery sensor using encoded synchronization signals in accordance with the present invention. FIG. 2 is an explanatory diagram of the iving system.

3A to 3D illustrate paging using encoded synchronization signals according to the present invention. It is an explanatory diagram of a battery saving system for explaining operation of a receiver.

FIG. 4 is a schematic electrical circuit diagram illustrating a preferred embodiment of the invention.

FIG. 5 shows the functionality of a microcomputer used in a preferred embodiment of the present invention. FIG.

Figures 6A through 6C describe the operation of a preferred embodiment of the invention. For This is a flowchart.

Description of the preferred embodiment Referring now to the drawings, and in particular to FIG. 1, the POC8AG signal is well known to those skilled in the art. One prior art battery saving method used in the system is shown. ing. As shown in Figure 1A, the POCSAG code format is a digital batches of pages using the same code format and sent at regular intervals It is equipped with Each batch consists of a sync word followed by the page to be sent. It is shown as follows.

As shown in Figure 1B, following the synchronization word, the page has eight address codes. are sent in separate frames, i.e. 1 to 8, with each frame containing two addresses. contains segment. All pagers in the system have 8 frames assigned to work on one of the following.

Figure 1C shows how battery safety is achieved in the POC8AG signaling system. This example shows how this can be achieved. As shown in Figure 1C, a page is assigned to frame 6. The pager is sufficient to detect the sync word Powers the receiver section intermittently for long periods of time, thereby Continuously maintained synchronization. Power is allocated by the pager after the sync word is detected are removed from the receiver until the frame being displayed, in this case frame 6, occurs. ing. received to determine whether the pager was sent to the page The receiver section is powered back up during frame 60 while evaluating the address. be done. If no page is received during the allotted frame, power is turned on again. sync words are removed from the receiver until the time they are to be transmitted. Therefore, P.O. The CSAG signaling system has a battery saving ratio of approximately 1/8, i.e. when the receiver is off. Gives the time the receiver is on for the duration.

The POCSAG signaling system described above thus connects all pages in the system. battery that gives the same effective battery saver duty cycle for the Provide savings format. In such a system, the entire system remains unchanged. As far as how to change the duty cycle is required to improve battery life Does not provide law.

In a preferred embodiment of the invention, an improved battery saver system is provided. As shown in Figure 2, this system significantly improves battery life. Figure 2A The basic format shown in Figure 2B is the same as the prior art system. same, but the synchronization signal or word is no longer a single fixed word. . Any number of separate batches can be added to the sync word and the sync word as shown in Figure 2C. generated by including an encoded sync word containing the sync ID at the end of the code. I can do it. The format of the sync ID is a 4-bit binary word ranging from 0 to 15. It can be in any number format, such as . Those skilled in the art will appreciate the information provided to the system. The number of sync IDs configured is based on the maximum battery savings ratio intended for use in the system. This is a matter to be selected. Sync ID is a common sync word that identifies each batch , and the batches are sent in the appropriate sequence.

In the example shown in FIG. 2A, the pager can allocate N different batches. There are N encoded synchronization words that describe . The pager only splits into a single frame. Unlike prior art systems that apply, in the preferred embodiment of the present invention: A pager is a frame that is sent in one or more of the N different batches mentioned above. can be assigned to a battery, thereby servicing the Battery Saver duty cycle. Adapt it to the format of the pager inside.

A possible improvement is to create 16 unique sendable batches. This is best done by considering a number, such as 16 coded synchronization words that define It can be understood. Figure 3 illustrates the flexibility of the battery saving system described above. It's clear. In a preferred embodiment of the invention, the pager is one or any combination of unique batches defined by synchronization words, or can be assigned to work with a synchronization group. If a pager is shown in Figure 3B, The conventional method only during the 6th frame and especially during sync group 2, as If the pager is assigned to receive pages at Turns on with only one of the systems, and the duty cycle of the battery saver is 1. : It becomes 12g. If the pager has a possible synchronization group as shown in Figure 3C. If the pager is assigned to 2 of the 128 frames, the pager will The battery saver's duty cycle is 1:64.

Pagers can be assigned to all sync groups as shown in Figure 3D. As a result, the duty cycle of battery saver is 1:8, which is different from the conventional technology. It is the same as that given by the POC3AG code format of the technology.

As one skilled in the art will understand, the synchronization group to which the pager responds is be assigned individually in the same way that individual addresses are assigned to pagers and can be stored in a pager. The correct page should be submitted The terminal normally used for queuing pages in a frame also allows individual Queue pages with a synchronization group that the pager is programmed to respond to put in. Pagers that give different battery saver duty cycles to each other Can be mixed in the same system without interference. Ultra small arm attachment The pager is assigned a long battery-saving duty cycle. , - The all-purpose pager has a better battery-saving duty cycle than the prior art. Shorter battery-saving duty cycles can be assigned.

FIG. 4 is an electrical block diagram of a pager constructed in accordance with the present invention. page The pager 20 transmits the transmissions to which the pager responds in a manner well known to those skilled in the art. used to receive encoded synchronization signals and pages or addresses. It includes an antenna 22 and a receiver portion 24.

The transmitted coded synchronization signal and the demodulated signal corresponding to the address are sent to the receiver 2. This occurs as a pit stream 25 of binary information at the output of 4.

As will be apparent to those skilled in the art, the pit pattern detector 28. control logic 82 and The function shown as programmable timer 3B uses microcomputer 26. can be easily implemented. The binary information pitstream 25 is a microcomputer. 26 bit pattern detectors 28 where the signal is applied to the synchronization group and is compared with the address code stored in the address memory 30, and the system maintain synchronization of systems, determine the time until the next assigned synchronization group, and Detect pages directed to a pager.

The synchronization group and address code can be stored in the address memory 30 by a person skilled in the art. Assigned to the pager by programming in a well-known manner. address Memory 3o is reprogrammable like EEPROM memory, thereby Synchronization groups or addresses can be easily set up and changed.

Control logic 32 of microcomputer 26 controls address memory 30 and bit parameters. Interface to turn detector 28 and received synchronization code and address memory 30 Controls comparisons with those stored in . The crystal oscillator 34 is a microcomputer 26 and provides locking as necessary for portions of the control logic 32. Output of crystal oscillator 34 also sets the reference clock of the programmable timer 36 of the microcomputer 26. provide. Programmable timer 36 is connected to bit pattern detector 28 and control logic. The pit detector generates an interval signal that is fed to the Allows control when correlating with synchronization groups or addresses in batches . The time interval generated by programmable timer 3B is an address memo. The control logic 32 corresponds to the synchronization groups stored in the memory 30. subordinate Therefore, once the pager achieves synchronization with the system, the pager's battery saver is one of the synchronization groups for which the pager is assigned It will not supply power to the receiver unless it is between.

The power supply to the receiver 24 is determined by the synchronization code stored in the address memory 30. The battery generated by control logic 32 in a manner corresponding to battery saver operation is A battery saver circuit 38 controlled by a battery saver signal 31 controlled in a manner well known to the person. An output annunciator 40 is provided, which is a display In the case of a play pager, an LCD display may be used, or a tone-on-rep. In the case of a pager, it may be a transducer, which is Alert the user.

To simply reiterate the point, given the assignable battery saver duty cycle: A pager according to a preferred embodiment of the present invention is illustrated in FIG. Applicable The pager can operate in any combination of synchronization groups and -Saver operation is defined by the synchronization code stored in the pager address memory. , thereby allowing these synchronization groups for which the pager is programmed. The battery saver circuit is guaranteed to be inoperative except during the time interval of the

Referring now to Figure 5, the assignable battery saver duty cycle Functional blocks of the microcomputer 26 including firmware for the embodiment A diagram is shown. As shown herein, in a preferred embodiment of the invention The microcomputer is a Motorola model 146805. Main departure ``Universal Paging Device with Power Conservation'' owned by the same assignee as Ming. U.S. Pat. No. 4.51L911i1, entitled Disclose the use of data. The disclosure of this patent is incorporated herein by reference.

The pit clock signal from the crystal oscillator 34 is connected to the prescaler and timer. A timer control unit 80 including a counter is supplied. The output of the crystal oscillator 84 is It also includes a central processing unit control circuit, an arithmetic logic unit called ALU, and an accumulator. mulator, index register, condition code register, stack pointer, Central processing unit including program counter high and program counter low modules. It is connected to the CPU (CPU) 82. The central processing unit also has multiple inputs. /Data direction input/output (110) registers 84 and 8B with output lines is connected. In particular, 8 lines for each of the two input/output ports It is shown.

As shown, the output line of register 84 is connected to battery saver circuit 38. is connected to line 31 to provide control of. Input line of register 84 is connected to receive the binary information pit stream signal 25 from the receiver 24. Ru.

The output line of register 86 is connected to output annunciator 40.

The four I10 lines of register 86 are connected to address code memory 30. Ru.

The central processing unit also includes read-only memory (ROM) 88 and random access memory. A memory (RAM) 90 is interfaced. Motorola's 1488 A feature of the 05 type family is that the on-chip RAM has no external RAM memory. The microcomputer 26 is allowed to operate. Parallel power/output capacity is Contains programmable pins to indicate power or output. I'm here. Timer/counter 80 is typically an 8 bit with a programmable prescaler. This is a counter that generates an interrupt signal on certain software selection events. can be used as an event counter to generate data, or to maintain timing. Can be used for

Figure 5 also shows the configuration of the main firmware module stored in ROM8g. . The selection and configuration of this module is a function of the particular program of the embodiment of the invention. It is. The use of RAM 90 primarily includes variables accessed during the program. for storage and as a scratchpad storage device.

146805 microcomputer and its related architecture and The internal instruction set is described in detail in the following US patents and applications: Sunawa No. 054,093, 1979, entitled "Low Current Manual Buffer." Filed on July 7th, ``Reducing the power consumed by static microprocessors'' No. 085.292, filed Aug. 9, 1979, entitled, "A device for reducing the power consumed by static microprocessors" No. 065,293, filed Aug. 9, 1979, entitled U.S. Patent filed August 9, 1979 entitled ``Microprocessor Architecture.'' No. 4,300,195, 19 entitled "Incrementer/Decrementer Circuits" U.S. Patent No. 4.280.190, filed August 9, 1979; ``Single Step System for Computers'', filed September 28, 1979. No. 4,308,581, and all six patents and applications are The theory of the invention is assigned to the recipient. These six listed patents and applications are M. Introduced here for a more complete description of the C146805 type microcomputer. It will be done.

6A through 6C, in accordance with a preferred embodiment of the present invention. A flowchart is shown illustrating the operation of the battery saving circuit. 6th As shown in flowchart 300 of Figure A, the system first begins with block As shown at 302, it is initialized. Then code plug or address , the memory is read as shown in block 304 and the result is read in block 30 As shown in B, it is used to initialize timing. Shown in block 308 A search for bit synchronization is started so that the

If bit synchronization is not detected, the search routine is started again. If If bit synchronization is detected, the bit timing is established, thereby detecting the synchronization word as shown in block 312. effectively starts a timeout timer for block 3. It is used to search for synchronization words as shown at 14. If If no synchronization word is detected, as indicated by lock 314, block 31 The search continues for a predetermined period of time as shown in block 6, after which the routine continues at block 3. Return to the search for bit synchronization, as shown at 08.

When the sync word is detected, the sync word is detected, as shown in block 314 of FIG. The ID, or sync group, is extracted and shown in block 354 of Figure 6B. is loaded into the synchronous group timer as follows. Synchronous group timer value is unit is correlated with the sync group assigned to it.

If a synchronization group is assigned to a unit as shown in block 355, If it is not one of the period groups, the timer is assigned the next time as shown in block 856. Set to the time for the assigned sync group. Sync group timeout Once occurring as shown in block 358, as shown in block 360, A search for the assigned synchronization word then begins. If the assigned sync work If the sync word is not detected, that is, the sync word is detected as shown in block 360. If not, the sync word flag is read as shown at block 362. if If the sync word detection flag is set as shown in block 364, then This is the second missed sync word detection as shown in block 370. ) has occurred, and the search for bit synchronization is shown in block 3 of Figure 6A. It starts again as shown at 08.

As shown in block 364, if the sync word detection flag is not set, If not, this is the first time a sync word has not been detected and block 36 The sync word detection flag is set as shown in B. Next, as shown in Figure 6C. Address decoding begins at point B, as shown.

Similarly, if the sync word is If it is detected during the The code starts. When address decoding is started, the timer starts at the block in Figure 6C. Set up for address decoding as shown at lock 338.

When the timer times out as shown in block 340, i.e., the address block 342 indicates that there is a suitable frame to search for. Address search begins as shown in .

If no address is detected, as shown in block 342, then FIG. As shown in block 356 of A group synchronization timer is set for the period.

When the address is detected, the block 342 of FIG. The function bits are decoded as shown at block 344. If the feature bit is If the message indicates that the message has not been sent, that is, as shown in block 346. If a tone-only page is indicated as shown in block 348, An alarm signal is generated so that the As shown in block 356 of FIG. 6B, A group sync timer is set for the next group sync interval.

As shown in block 346, the capability bit indicates that the message has been sent. If so, the received message is stored as shown in block 350. and an alarm is generated as shown in block 352. The block in Figure 6B As shown in block 856, the group sync timer is activated at the next group sync interval. set for the file.

To briefly repeat the point again, the assignable battery saver duty cycle Steps are provided to provide a flexible battery saving system that utilizes Ta. It is clear to those skilled in the art that the procedures and equipment described can be used in a single system without interference. Allows mixing of pagers with different battery saver duty cycles It will be understood that Also, those skilled in the art will appreciate that the procedures and equipment described are Optimize battery savings for the type of battery installed in the pager. It will also be understood that

FIG, IB frame former, 1-FIG, IC7-j Leer °6 Heze Yayokon Deliseino V-Timin TFIG, 2C FIG, 3A FIG, 3CFts7 rule-r2 bzvN+:>hi+sign 1-FIG, 5 FIG. 6A Copy and translation of amendment) Submission (Article 184-8- of the Patent Law) June 22, 1989 Yoshi, Commissioner of the Patent Office 1) Takeshi Moon 1. Display of patent application PCT/US87100005 2. Name of the invention Baging system with assignable battery saver duty cycle Mu 3. Patent applicant Address: East Al, Shambab, Illinois 60196, USA Gonfin Road 1303 Name: Motorola Incorporated Representative Rauner Vincent Joseph 4, Agent Address: Toranomon Electric Building, 2-8-1 Toranomon, Minato-ku, Tokyo 105 Phone: 03 ( 501) 93886, list of attached documents Copy and translation of the written amendment) 1 copy The scope of the claims 1. For groups of selective call receivers with batteries of different energy capacities A selective call communication system capable of providing a predetermined battery life, the system comprising: Transmitter means for transmitting a selective calling signal in a predetermined signal format, the transmitter means The format includes an encoded synchronization signal that identifies the synchronization group of the receiver; a group of selective calling receivers, each receiver (20) having a first energy capacity. battery, receiver section (24) for receiving and received selective calls a decoder (26) for decoding the signal and a predetermined first number of encoding synchronization groups; a received code for powering said receiver section (24) during a loop. a battery saver circuit (38) responsive to a synchronization signal; a group of receivers configured to provide a predetermined battery life for each of said first group of receivers. be assigned, and a second group of selective call receivers, each receiver (20'') a second battery with an energy capacity smaller than that of the receiver section for reception; (24N) and a decoder (26″) for decoding the received selective call signal. ), and the receiver section (2 4-) a battery cell responsive to the received encoded synchronization signal to power the a receiver circuit (38”), and the second number of groups are the receivers of the first group. substantially the same predetermined battery life as is provided to each of said second receiver groups. assigned to provide for each of the loops. selective call communication system.

2. Each of the coded synchronization groups is used for sending address and message information. 2. The selective call communication system according to claim 1, comprising a plurality of frames.

3. Each group of selective call receivers is further assigned to one of the plurality of frames. and the battery saver circuit (38) further determines the frame allocation. said allocated frame for receiving address and message information in response; 3. The selective call communication system of claim 2, further comprising: providing power to each of said receivers during transmission of a program. system.

4. The coded synchronization group signal includes a synchronization word and a synchronization identification word. The selective call communication system according to item 1.

5. One or more of the coded synchronization groups are connected to the first and second selective call receivers. The selective calling communication system according to claim 1, wherein the selective calling communication system is commonly assigned to each of the groups. Mu.

6. Each of said coded synchronization groups is connected to said first and second selective call receiver groups. 2. The selective calling communication system according to claim 1, wherein the selective calling communication system is independently assigned to each of the groups.

7. Choice of having batteries of different energy capacities operating in communication systems A method for providing a predetermined battery life for a group of call receivers. So, the method is transmitting a plurality of encoded synchronization signals identifying synchronization groups of receivers; a first group of selective call receivers, each receiver (20) having a first energy capacity; The first to receive the encoded synchronization signal transmitted to the one with the amount of battery. Assign a predetermined first number of coded synchronization groups to which the group's receivers respond. the first number of groups being located in each of the first group of receivers; those assigned to give a certain battery life, and the second group selective calling receivers, each receiver (20) having an energy capacity smaller than said first energy capacity. receiving an encoded synchronization signal transmitted to a second battery having a second energy capacity; a predetermined second number encoding to which the second group of receivers responds to receive the second number; allocating the second number of groups to synchronization groups, the second number of groups being the first number of groups; A second battery life approximately equal to that given to each of the receivers in the loop. allocated to feed each of the group's receivers, The method characterized in that it comprises:

8. Said step of allocating a predetermined number of coded synchronization groups includes first and second groups. said first and second numbers of assigned coded synchronization groups in said group receivers, respectively; 8. The method of claim 7, including the step of storing a group.

9. One or more assigned coded synchronization groups of the first and second groups. 9. The method of claim 8, wherein the receivers are commonly assigned to each of the receivers.

10. Each of the assigned synchronization groups receives the first and second groups. 9. The method of claim 8, wherein each of the machines is independently assigned.

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Claims (4)

[Claims] 1. transmitting means for transmitting a selective call signal in a predetermined signal format; The selective calling signal transmitted from the transmitting means in a predetermined signal format is received. a first group of selective call receivers for decoding each receiver; a battery cell for periodically powering the receiver at a first repetition rate; those with an iber circuit; The selective calling signal transmitted from the transmitting means in a predetermined signal format is received. a second group of selective call receivers for decoding each of the receivers; each includes a battery set for periodically powering the receiver at a second repetition rate. those with an iber circuit; A selective call communication system comprising: 2. The transmitting means transmits the first group of receivers when the first group of receivers is powered. transmitting a selective call signal to the receivers of the first group, and The transmitting means transmits the second group of receivers when the second group of receivers is powered. transmitting a selective call signal to a group of receivers; The selective call communication system according to claim 1. 3. means for receiving and demodulating a transmitted encoded signal; The signal includes a plurality of coded synchronization signals transmitted sequentially at predetermined time intervals; for storing the assigned synchronization identification information corresponding to the assigned synchronization word. means, means for deriving a synchronization signal and synchronization identification information from the demodulated encoded signal; from the currently drawn coded synchronization signal to the next allocated coded synchronization signal. means for calculating time intervals, and in response to said means for calculating said time following the allocation of power supply to the receiver; a battery saving means for aborting until the encoded synchronization signal is received; A receiver comprising: 4. Battery saving duty that can be assigned to communication receivers operating in communication systems. A method for providing a transmitted encoded signal by a receiver. The encoded signal received and transmitted is a plurality of codes transmitted sequentially at predetermined time intervals. Contains encoded synchronization signals, each encoded synchronization signal containing a synchronization word and synchronization identification information. and the communication receiver receives an assigned synchronization word corresponding to the next assigned synchronization word. Contains memory to store assigned synchronization identification information, and further transfers data from the battery to the receiver. means for controlling the power supply of the Continuously powering the receiver, detecting the synchronization word and synchronization identification information and the retrieval stage, the next transmitted encoding corresponding to the next assigned synchronization word Calculating the time interval to the sync word and the next assigned coded sync power down for a time interval up to the word, thereby synchronizing the system. and initiating battery saving operation. How to write.