WO1991001614A1 - Method of selecting functions in a combination selective call receiver watch - Google Patents

Method of selecting functions in a combination selective call receiver watch Download PDF

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Publication number
WO1991001614A1
WO1991001614A1 PCT/US1990/003383 US9003383W WO9101614A1 WO 1991001614 A1 WO1991001614 A1 WO 1991001614A1 US 9003383 W US9003383 W US 9003383W WO 9101614 A1 WO9101614 A1 WO 9101614A1
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WO
WIPO (PCT)
Prior art keywords
functions
scrolling
messages
selecting
timekeeping
Prior art date
Application number
PCT/US1990/003383
Other languages
French (fr)
Inventor
Randi Lisa Dulaney
Pamela Ann Rakolta
Juna Oscar Rodriguez
Original Assignee
Motorola, Inc.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Motorola, Inc. filed Critical Motorola, Inc.
Publication of WO1991001614A1 publication Critical patent/WO1991001614A1/en

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Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B5/00—Visible signalling systems, e.g. personal calling systems, remote indication of seats occupied
    • G08B5/22—Visible signalling systems, e.g. personal calling systems, remote indication of seats occupied using electric transmission; using electromagnetic transmission
    • G08B5/222—Personal calling arrangements or devices, i.e. paging systems
    • G08B5/223—Personal calling arrangements or devices, i.e. paging systems using wireless transmission
    • G08B5/224—Paging receivers with visible signalling details
    • G08B5/229—Paging receivers with visible signalling details with other provisions not elsewhere provided for

Definitions

  • This invention relates in general to electronic devices with messag storage capability such as combination selective call receiver watches and more specifically, to an apparatus for and method of reviewing and selectin the functions and messages contained therein.
  • timekeeping devices such as wrist watches and message storage devices such as selective call receivers
  • Current digital display wrist watches typically comprise four push switches for manipulating the internal functions and settings offered to the user.
  • these switches comprise mode, select, set, and light switches.
  • the mode switch is used to step through available modes and access the particular mode that the user is interested in viewing or changing.
  • Typical modes in a wrist watch include current time, alarm, chronograph (stop-watch), etc.
  • the select switch is used to scroll through the elements of that mode. For example, if a user chooses the alarm mode, he would use the select switch to step through the hours, minutes, A.M. or P.M., etc of the alarm time setting.
  • the set switch is used to make the change. For example, if the mode and select switches are used to access the alarm A.M. or P.M. setting, actuating the set switch would change A.M. to P.M. or vice versa.
  • actuation of the light switch activates the display backlight to facilitate viewing in a dark environment.
  • four switches are typically used in today's digital wrist watches to allow efficient user operation.
  • a known numeric display pager achieves functional operation through two push switches and one combination three-position slide and push switch.
  • One of the push switches on the known pager if actuated during an alert, will reset the alert and, thus, silence the pager. Under all conditions other than alerting, actuation of this push switch will result in scrolling through the messages stored in memory on the visual display (one screen per switch actuation).
  • the second push switch on the known pager serves to lock and unlock selected messages stored in memory.
  • a message in memory that is locked cannot be overwritten by a subsequently received message, whereas an unlocked message can.
  • a particular unlocked /locked message is locked /unlocked by actuation of the lock/ unlock push switch while any portion of the particular message is displayed on the visual display.
  • the three-position slide switch portion permits on /off and alert mode switching. In the first position, the pager is off. In the second position, the pager is on in the silent mode. In the third position, the pager is on in the audible mode.
  • the push portion of the combination switch in the known pager is used to activate display backlighting. When the slide switch portion is set to either the silent or audible modes, actuating the push portion of the switch will backlight the visual display.
  • a combination electronic message storage and timekeeping device having a visual display and comprising a first means for scrolling through timekeeping functions, a second means for scrolling through message manipulation functions, and a third means for selecting one of the timekeeping functions and the message manipulation functions.
  • FIG. 1 is a block diagram of a combination selective call receiver watch in accordance with the preferred embodiment of the invention.
  • FIG. 2 is a flow diagram of the timekeeping function selection process.
  • FIG. 3 is a flow diagram of the pager function selection process.
  • FIG. 4 is a flow diagram of the the message reading and locking process.
  • a combination selective call receiver watch comprises an antenna 101 for receiving radio frequency signals which are, in turn, conducted to pager circuitry 102.
  • pager circuitry 102 demodulates the received radio frequency signals and compares the demodulated digital codes to those in a read-only memory contained therein. Should the demodulated codes match, the alert 106 is activated to provide notification such as visual or audible to the user of a received page and the page is written into the random access memory of pager circuitry 102. If the received page includes a message, the received message can be read from the random access memory by the user on the display 105.
  • Watch circuitry 104 comprises circuitry for performing timekeeping functions including real-time clock, time-stamping of received messages, alarms, etc
  • Battery 103 supplies circuit power to the appropriate portions of the device including the pager circuitry 102 and the watch circuitry 104.
  • Switch interface controller 107 couples the pager circuitry 102 and the watch circuitry 104 to a plurality of operational push switches comprising a read/reset switch 108, a pager switch 109, a time switch 110, a select/lock switch 111, and a lamp switch 112. One end of each of the five switches are common and connected to ground 113.
  • a flow diagram of the timekeeping function selection process is shown.
  • actuation of the time switch 110 by the user is denoted by the letter "T” and actuation of the select/lock switch 111 is denoted by the letter H S.
  • H The timekeeping function selection process begins with the standby mode 201, in which the current time and date are displayed.
  • the process proceeds to step 202, in which the message "ALRM ON?” is displayed on the display 105 if the alarm is currently turned off or the message "ALRM OFF?” is displayed if the alarm is currently turned on. If the select/lock switch 111 is actuated at this point, the alarm setting is changed from on to off or vice versa.
  • step 204 the process proceeds to step 204 and the message "SET ALARM?" is displayed on the display 105. If the select /lock switch 111 is actuated at this point, the user can set the alarm time with the time switch 110 and the select/lock switch 111, after which the process reverts back to the standby mode 201. If, in step 204, the user actuates the time switch 110, the process proceeds to step 206 and the message "SET TIME?" is displayed on the display 105.
  • step 206 the user can set the current time with the time switch 110 and the select/lock switch 111, after which the process reverts back to the standby mode 201. If, in step 206, the user actuates the time switch 110, the process proceeds to step 208 and the message "SET DATE?" is displayed on the display 105. If the select/lock switch is ' actuated at this point, the user can set the current date with the time switch 110 and the select/lock switch 111, after which the process reverts back to the standby mode 201. If, in step 208, the user actuates the time switch 110, the process reverts back to the standby mode 201.
  • FIG. 3 a flow diagram of the pager function selection process is shown.
  • actuation of the pager switch 109 by the user is denoted by the letter "P 1 and actuation of the select /lock switch 111 is denoted by the letter "S.”
  • the pager is off and the current time and date are displayed on the display 105. If the pager switch 109 is actuated in step 301, the message "PGR ON?" is displayed 302 on the display 105.
  • step 302 the pager powers-up in the audible mode 303 and the process proceeds to step 306, which is comprised of a standby mode in which the pager is on and the current time and date are displayed on the display 105. If the pager switch 109 is actuated in step 302, the message "SILENT?" is displayed 304 on the display 105. If the select/lock switch 111 is actuated in step 304, the pager powers-up in the silent mode 305, and the process proceeds to standby mode 306. If the pager switch 109 is actuated in step 304, the pager remains off and the process reverts back to the standby mode 301.
  • step 306 if the pager switch 109 is actuated, the message "SILENT?" is displayed 307 on the display 105 if the pager is currently in the audible mode or the message "AUDIBLE?" is displayed on the display 105 if the pager is currently in the silent mode. If the select /lock switch 111 is actuated 307, the pager mode is changed from silent to audible or vice versa 308, and the process reverts back to step 306. If, in step 307, the pager switch 109 is actuated, the message "PGR OFF?” is displayed 309 on the display 105. If the select/lock switch 111 is actuated, the pager is turned off 310, and the process reverts back to the standby mode 301.
  • step 309 a check is made for any pages (messages) stored in memory 311. If there are pages stored in memory, the message "ERASE?" is displayed 312. If the select/lock switch 111 is actuated at this point, all read, unlocked pages are erased (the locking process is described below in the description of FIG. 4). If the pager switch 109 is actuated in step 312, a check is made to see if the pager has the auto on/off option active 314. Additionally, if it is -found in step 311 that there are no pages stored in memory, the process reverts to step 314. If, in step 314, the auto on/ off option is found inactive, the process reverts back to step 306.
  • the message "PGR AUTO?” is displayed if the pager is currently in the manual on/ off mode or the message "MANUAL?" is displayed if the pager is currently in the auto on/off mode 315. If the select/lock switch 11 is actuated, the pager switches from the manual on /off mode to the auto on/off mode or vice versa. If the pager switch 109 is actuated in step 315, the message "SET ON?” is displayed 317. If the select/lock switch 111 is actuated, the user can set the auto on time using the pager switch 109 and the select/lock switch 111, after which the process reverts back to step 306.
  • step 317 the pager switch 109 is actuated
  • the message "SET OFF" is displayed 319. If the select/lock switch 111 is actuated, the user can set the auto off time using the pager switch 109 and the select/lock switch 111, after which the process reverts back to step 306. If, in step 319, the pager switch 109 is actuated, the process reverts back to step 306.
  • FIG. 4 a flow diagram of the message reading and locking process is shown.
  • actuation of the read /reset switch 108 by the user is denoted by "R/R”
  • timeout of a step is denoted by "T/O”
  • actuation of the select /lock switch 111 is denoted by the letter "S.”
  • the pager is on and the current time and date are displayed on the display 105.
  • actuation of the read /reset switch 108 a check is made to see if any pages (messages) are stored in memory 402. If there are no pages found in memory, the message "NO PAGES" is displayed 403, and the process reverts back to the standby mode 401.
  • step 404 including the timestamp/ source screen if the timestamp/ source screen option is active 406. If, while any portion of a message (including the timestamp /source screen) is being displayed , the select/lock switch 111 is actuated, that message is locked 405, meaning that it henceforth cannot be overwritten by a subsequent incoming message or erased in step 313. Afte the current message has completed display 404 and 406, if the user actuate the read /reset switch 108, a check is made to see if there are any mor messages in memory 407. If there are not, the process reverts back to th standby mode 401. If there are, the process reverts back to step 404 to displa the next message. If timeout is allowed in step 406, the process reverts bac to standby mode 401.

Abstract

A combination electronic message storage and timekeeping device having a visual display (105) that is capable of receiving and storing a plurality of messages comprises a first circuit (104) for scrolling through and viewing on the visual display a plurality of timekeeping functions in a predetermined sequence, a second circuit (102) for scrolling through and viewing on the visual display a plurality of message manipulation functions in a predetermined sequence, and a third circuit (108-111) for selecting one of the timekeeping functions and the selectable message manipulation functions.

Description

METHOD OF SELECTING FUNCTIONS IN A COMBINATION SELECTIVE CALL RECEIVER WATCH
Field of the Invention
This invention relates in general to electronic devices with messag storage capability such as combination selective call receiver watches and more specifically, to an apparatus for and method of reviewing and selectin the functions and messages contained therein.
Background of the Invention
The functional operation of timekeeping devices such as wrist watches and message storage devices such as selective call receivers is well known to those skilled in the art. Current digital display wrist watches typically comprise four push switches for manipulating the internal functions and settings offered to the user. Usually, these switches comprise mode, select, set, and light switches. The mode switch is used to step through available modes and access the particular mode that the user is interested in viewing or changing. Typical modes in a wrist watch include current time, alarm, chronograph (stop-watch), etc. Once the particular mode of interest is chosen and displayed, the select switch is used to scroll through the elements of that mode. For example, if a user chooses the alarm mode, he would use the select switch to step through the hours, minutes, A.M. or P.M., etc of the alarm time setting. Once the user has selected the particular mode element(s) that he wishes to change, the set switch is used to make the change. For example, if the mode and select switches are used to access the alarm A.M. or P.M. setting, actuating the set switch would change A.M. to P.M. or vice versa. In digital display wrist w ..xhes with available display backlighting, actuation of the light switch activates the display backlight to facilitate viewing in a dark environment. Thus, four switches are typically used in today's digital wrist watches to allow efficient user operation.
Current message storage devices such as selective call receivers typically comprise a plurality of switches for accomplishing the following functions: on /off, alert mode selection, alert reset, message read, message lock/ unlock, and display backlighting. For example, a known numeric display pager achieves functional operation through two push switches and one combination three-position slide and push switch. One of the push switches on the known pager, if actuated during an alert, will reset the alert and, thus, silence the pager. Under all conditions other than alerting, actuation of this push switch will result in scrolling through the messages stored in memory on the visual display (one screen per switch actuation). The second push switch on the known pager serves to lock and unlock selected messages stored in memory. A message in memory that is locked cannot be overwritten by a subsequently received message, whereas an unlocked message can. A particular unlocked /locked message is locked /unlocked by actuation of the lock/ unlock push switch while any portion of the particular message is displayed on the visual display.
Regarding the combination three-position slide and push switch in the known pager, the three-position slide switch portion permits on /off and alert mode switching. In the first position, the pager is off. In the second position, the pager is on in the silent mode. In the third position, the pager is on in the audible mode. The push portion of the combination switch in the known pager is used to activate display backlighting. When the slide switch portion is set to either the silent or audible modes, actuating the push portion of the switch will backlight the visual display.
In the design of a product combining timekeeping functions such as those in current digital wrist watches and message manipulation functions such as those in the described known pager, it is rather impractical to simply incorporate the sum of the switches found in both products. Based on the foregoing examples, this approach would result in a total of seven push switches and one three-position slide switch. Such a large number of switches would undoubtedly make operation of the product very difficult and cumbersome for the user, and would additionally be difficult to implement in a package that would be small enough to be worn practically on the wrist. Thus, what is needed is an apparatus and method for reviewing an selecting the functions and messages of a combination selective call receive watch.
Summary of the Invention
Accordingly, it is an object of the present invention to provide an efficient and user-friendly method of scrolling through and selectin functions in a combination selective call receiver watch.
In carrying out the above and other objects of the invention in one form, there is provided a combination electronic message storage and timekeeping device having a visual display and comprising a first means for scrolling through timekeeping functions, a second means for scrolling through message manipulation functions, and a third means for selecting one of the timekeeping functions and the message manipulation functions. The above and other objects, features, and advantages of the present invention will be better understood from the following detailed description taken in conjunction with the accompanying drawings.
Brief Description of the Drawing
FIG. 1 is a block diagram of a combination selective call receiver watch in accordance with the preferred embodiment of the invention.
FIG. 2 is a flow diagram of the timekeeping function selection process. FIG. 3 is a flow diagram of the pager function selection process.
FIG. 4 is a flow diagram of the the message reading and locking process.
Detailed Description of the Invention
Referring to FIG. 1, a combination selective call receiver watch comprises an antenna 101 for receiving radio frequency signals which are, in turn, conducted to pager circuitry 102. As is well known in the art, pager circuitry 102 demodulates the received radio frequency signals and compares the demodulated digital codes to those in a read-only memory contained therein. Should the demodulated codes match, the alert 106 is activated to provide notification such as visual or audible to the user of a received page and the page is written into the random access memory of pager circuitry 102. If the received page includes a message, the received message can be read from the random access memory by the user on the display 105. Watch circuitry 104 comprises circuitry for performing timekeeping functions including real-time clock, time-stamping of received messages, alarms, etc Battery 103 supplies circuit power to the appropriate portions of the device including the pager circuitry 102 and the watch circuitry 104. Switch interface controller 107 couples the pager circuitry 102 and the watch circuitry 104 to a plurality of operational push switches comprising a read/reset switch 108, a pager switch 109, a time switch 110, a select/lock switch 111, and a lamp switch 112. One end of each of the five switches are common and connected to ground 113.
Referring to FIG. 2, a flow diagram of the timekeeping function selection process is shown. In this flow diagram, actuation of the time switch 110 by the user is denoted by the letter "T" and actuation of the select/lock switch 111 is denoted by the letter HS.H The timekeeping function selection process begins with the standby mode 201, in which the current time and date are displayed. Upon actuation of the time switch 110, the process proceeds to step 202, in which the message "ALRM ON?" is displayed on the display 105 if the alarm is currently turned off or the message "ALRM OFF?" is displayed if the alarm is currently turned on. If the select/lock switch 111 is actuated at this point, the alarm setting is changed from on to off or vice versa. The process then reverts back to the standby mode 201. If the time switch 110 is actuated at step 202, the process proceeds to step 204 and the message "SET ALARM?" is displayed on the display 105. If the select /lock switch 111 is actuated at this point, the user can set the alarm time with the time switch 110 and the select/lock switch 111, after which the process reverts back to the standby mode 201. If, in step 204, the user actuates the time switch 110, the process proceeds to step 206 and the message "SET TIME?" is displayed on the display 105. If the select /lock switch 111 is actuated at step 206, the user can set the current time with the time switch 110 and the select/lock switch 111, after which the process reverts back to the standby mode 201. If, in step 206, the user actuates the time switch 110, the process proceeds to step 208 and the message "SET DATE?" is displayed on the display 105. If the select/lock switch is'actuated at this point, the user can set the current date with the time switch 110 and the select/lock switch 111, after which the process reverts back to the standby mode 201. If, in step 208, the user actuates the time switch 110, the process reverts back to the standby mode 201.
Referring to FIG. 3, a flow diagram of the pager function selection process is shown. In this flow diagram, actuation of the pager switch 109 by the user is denoted by the letter "P1 and actuation of the select /lock switch 111 is denoted by the letter "S." In the standby mode 301, the pager is off and the current time and date are displayed on the display 105. If the pager switch 109 is actuated in step 301, the message "PGR ON?" is displayed 302 on the display 105. If the select/lock switch 111 is actuated in step 302, the pager powers-up in the audible mode 303 and the process proceeds to step 306, which is comprised of a standby mode in which the pager is on and the current time and date are displayed on the display 105. If the pager switch 109 is actuated in step 302, the message "SILENT?" is displayed 304 on the display 105. If the select/lock switch 111 is actuated in step 304, the pager powers-up in the silent mode 305, and the process proceeds to standby mode 306. If the pager switch 109 is actuated in step 304, the pager remains off and the process reverts back to the standby mode 301.
In step 306, if the pager switch 109 is actuated, the message "SILENT?" is displayed 307 on the display 105 if the pager is currently in the audible mode or the message "AUDIBLE?" is displayed on the display 105 if the pager is currently in the silent mode. If the select /lock switch 111 is actuated 307, the pager mode is changed from silent to audible or vice versa 308, and the process reverts back to step 306. If, in step 307, the pager switch 109 is actuated, the message "PGR OFF?" is displayed 309 on the display 105. If the select/lock switch 111 is actuated, the pager is turned off 310, and the process reverts back to the standby mode 301. If the pager switch 109 is actuated in step 309, a check is made for any pages (messages) stored in memory 311. If there are pages stored in memory, the message "ERASE?" is displayed 312. If the select/lock switch 111 is actuated at this point, all read, unlocked pages are erased (the locking process is described below in the description of FIG. 4). If the pager switch 109 is actuated in step 312, a check is made to see if the pager has the auto on/off option active 314. Additionally, if it is -found in step 311 that there are no pages stored in memory, the process reverts to step 314. If, in step 314, the auto on/ off option is found inactive, the process reverts back to step 306. If it is found that the auto on/off option is active 314, the message "PGR AUTO?" is displayed if the pager is currently in the manual on/ off mode or the message "MANUAL?" is displayed if the pager is currently in the auto on/off mode 315. If the select/lock switch 11 is actuated, the pager switches from the manual on /off mode to the auto on/off mode or vice versa. If the pager switch 109 is actuated in step 315, the message "SET ON?" is displayed 317. If the select/lock switch 111 is actuated, the user can set the auto on time using the pager switch 109 and the select/lock switch 111, after which the process reverts back to step 306. If, in step 317, the pager switch 109 is actuated, the message "SET OFF" is displayed 319. If the select/lock switch 111 is actuated, the user can set the auto off time using the pager switch 109 and the select/lock switch 111, after which the process reverts back to step 306. If, in step 319, the pager switch 109 is actuated, the process reverts back to step 306.
Referring to FIG. 4, a flow diagram of the message reading and locking process is shown. In this flow diagram, actuation of the read /reset switch 108 by the user is denoted by "R/R," timeout of a step is denoted by "T/O", and actuation of the select /lock switch 111 is denoted by the letter "S." In the standby mode 401, the pager is on and the current time and date are displayed on the display 105. Upon actuation of the read /reset switch 108, a check is made to see if any pages (messages) are stored in memory 402. If there are no pages found in memory, the message "NO PAGES" is displayed 403, and the process reverts back to the standby mode 401. If there are pages found in memory, the last message received is displayed on the display 105, step 404, including the timestamp/ source screen if the timestamp/ source screen option is active 406. If, while any portion of a message (including the timestamp /source screen) is being displayed , the select/lock switch 111 is actuated, that message is locked 405, meaning that it henceforth cannot be overwritten by a subsequent incoming message or erased in step 313. Afte the current message has completed display 404 and 406, if the user actuate the read /reset switch 108, a check is made to see if there are any mor messages in memory 407. If there are not, the process reverts back to th standby mode 401. If there are, the process reverts back to step 404 to displa the next message. If timeout is allowed in step 406, the process reverts bac to standby mode 401.
By now it should be appreciated that there has been provided an apparatus and method for reviewing and selecting the functions and messages of a combination selective call receiver watch.

Claims

1. A combination electronic message storage and timekeeping device having a visual display and capable of receiving and storing a plurality of messages, comprising: first means for scrolling through and viewing on said visual display a plurality of timekeeping functions in a predetermined sequence; second means for scrolling through and viewing on said visual display a plurality of message manipulation functions in a predetermined sequence; and third means for selecting one of said timekeeping functions and said selectable message manipulation functions.
2. The combination electronic message storage and timekeeping device according to claim 1 wherein said electronic message storage device comprises a selective call receiver.
3. The combination electronic message storage and timekeeping device of claim 1 further comprising fourth means for selectively lighting said visual device for improving the viewing thereof.
4. The combination electronic message storage and timekeeping device of claim 1 wherein said third means further comprises fourth means for protecting selected ones of said stored messages from being overwritten by subsequently received messages.
5. The combination electronic message storage and timekeeping device of claim 1 further comprising fourth means for scrolling through and viewing said stored messages on said display.
6. The combination electronic message storage and timekeeping device according to claim 5 wherein said fourth means further comprises fifth means for selecting a standby mode.
7. An apparatus comprising: clock means for displaying a selected one of a first plurality of functions including the time of day; selective call receiver means for displaying a second plurality of functions including displaying a received message; first control means for scrolling through said first plurality of functions; second control means for scrolling through said second plurality of functions; and selection means for selecting one of said functions.
8. The apparatus according to claim 7 further comprising: a housing having said clock means, said selective call receiver means, said first and second control means and said first selection means positioned therein; and strap means for affixing said housing to another object.
9. The apparatus according to claim 8 wherein said first and second control means and said first selection means each comprise a push button extending from said housing.
10. The apparatus according to claim 7 further comprising lamp means for improving the viewability of displayed functions.
11. The apparatus according to claim 7 wherein said selection means further comprises protection means for protecting selected ones of said messages from being overwritten by subsequently received messages.
12. The apparatus according to claim 7 further comprising third control means for scrolling through and viewing said received message.
13. The apparatus according to claim 12 wherein said third control means comprises second selection means for selecting a standby mode.
14. A method of displaying and selecting functions and reading messages in a combination electronic message storage and timekeeping device having a visual display, comprising the steps of; scrolling through and viewing either a selected one of a plurality of timekeeping functions or a plurality of message manipulation functions on the display; selecting one of the functions from the selected plurality of functions.
15. The method according to claim 14 further comprising the step of scrolling through and displaying the messages on the display when the message manipulation functions have been selected.
16. The method according to claim 14 further comprising the step of protecting selected ones of the messages from being inadvertently erased.
17. The method according to claim 14 further comprising the step of selecting a standby mode.
18. The method according to claim 14 further comprising the step of selectively lighting the visual display for improving the viewing thereof.
19. An apparatus comprising: first means for scrolling a first plurality of functions for displaying information therein; second means for scrolling a second plurality of functions for displaying information therein; third means for selecting one of said first and second functions.
PCT/US1990/003383 1989-07-24 1990-06-18 Method of selecting functions in a combination selective call receiver watch WO1991001614A1 (en)

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US38433389A 1989-07-24 1989-07-24
US384,333 1989-07-24

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0581028A1 (en) * 1992-07-02 1994-02-02 Seiko Instruments Co., Ltd. Electronic watch with pager
GB2302196A (en) * 1995-06-13 1997-01-08 Nec Corp Radio pager receiver
US5670356A (en) * 1994-12-12 1997-09-23 Promega Corporation Modified luciferase
EP0718804A3 (en) * 1994-12-14 1999-01-13 Holger Dipl.-Ing. Schaffer Data recording device
DE19858942A1 (en) * 1998-12-09 2000-06-15 Deutsche Telekom Ag Method and device for easy contact between parents and children uses a mobile telephone network to transmit both ways to remind a child of its duty to send a signal, or, just one way from child to parent regarding child's whereabouts
CN1077383C (en) * 1994-07-26 2002-01-02 日本电气株式会社 Message indicating unit and its method

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54151874A (en) * 1978-05-22 1979-11-29 Seiko Epson Corp Electronic watch
US4713808A (en) * 1985-11-27 1987-12-15 A T & E Corporation Watch pager system and communication protocol

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54151874A (en) * 1978-05-22 1979-11-29 Seiko Epson Corp Electronic watch
US4713808A (en) * 1985-11-27 1987-12-15 A T & E Corporation Watch pager system and communication protocol

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0581028A1 (en) * 1992-07-02 1994-02-02 Seiko Instruments Co., Ltd. Electronic watch with pager
CN1077383C (en) * 1994-07-26 2002-01-02 日本电气株式会社 Message indicating unit and its method
US5670356A (en) * 1994-12-12 1997-09-23 Promega Corporation Modified luciferase
EP0718804A3 (en) * 1994-12-14 1999-01-13 Holger Dipl.-Ing. Schaffer Data recording device
GB2302196A (en) * 1995-06-13 1997-01-08 Nec Corp Radio pager receiver
GB2302196B (en) * 1995-06-13 1999-09-29 Nec Corp Radio pager receiver
DE19858942A1 (en) * 1998-12-09 2000-06-15 Deutsche Telekom Ag Method and device for easy contact between parents and children uses a mobile telephone network to transmit both ways to remind a child of its duty to send a signal, or, just one way from child to parent regarding child's whereabouts

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