REMOTE ALERΗNG DEVICE FOR INCOMING RADIO COMMUNICATIONS
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a device for providing an alarm to a user of a portable communication unit indicating that the portable communication un t is receiving a message from a nase communication unit and, more particularly, to a system employing an auxiliary transmitter with the portable communication unit to provide a signal to an auxiliary receiver on the user's person.
2. Related Art
Communication systems m general and cellular telephones and paging systems m particular have attained widespread use m providing users with tne ability to receive messages irrespective of whether the user moves from place to place. Indeed, the portability of the cellular telephone or pager is precisely the function which places those devices m demand .
These communication systems, such as cellular telephone systems, typically employ a base station and a plurality of cellular (or mobile) stations which are portable. The portable stations typically employ a sounding device which activates when the portable station receives a message from the base station. When the sounder activates, the user is notified tπat a message is incoming ana can then- activate tne portable station and receive tne message.
As portable cellular telephones and pagers have become very small and compact, some users place them m bags, purses, knapsacks, briefcases, or the like and cannot hear the sounding device when a message is incoming. Consequently, the user fails to receive the message. This is a significant problem because the primary function of the portable station is rendered useless. This problem is exacerbated when the portable stations are used m high ambient noise areas. Some portable station manufacturers have included luminous and/or tactile alerting devices with the portable station m order to increase the probability that a user will be alerted that a message is incoming. When the user places the portable station m a bag, however, even the luminous and tactile devices are rendered useless.
Accordingly, there is a need m the art for a new communication system m which the user may be notified that a message is incoming to his or her portable station irrespective of whether the portable station is placed m a bag or is otherwise out of earshot, site, or physical contact with the user.
SUMMARY OF THE INVENTION
In order to overcome the disadvantages of the prior art the present invention includes a base communication unit; a portable communication unit operable to receive a message from the base communication unit via a first radio frequency communication channel; an auxiliary transmitter coupled to the portable communication unit and operable to produce an alert signal m response to the portable communication unit receiving the message; and an auxiliary receiver operable to receive the
alert signal over a second radio frequency communication channel and produce an alarm to a user of the portable communication unit m response to the alert signal. According to another aspect of the instant invention, a communication device is provided which includes a base communication unit; a portable communication unit operable to receive a message from the base communication unit via a first radio frequency communication channel, the portable communication unit producing at least one of an audible signal, a luminous signal, and a tactile signal m response to receiving the message; a sensor unit operable to sense the at least one audible, luminous, and tactile signals to produce a first alert signal m response thereto; an auxiliary transmitter coupled to the sensor unit and operable to produce a second alert signal m response to the first alert signal; and an auxiliary receiver operable to receive the second alert signal over a second radio frequency communication channel and produce an alarm to a user of the portable communication unit m response to the second alert signal .
According to yet another aspect of the instant invention, a communication device is provided which includes a base communication unit; a portable communication unit operable to receive a message from the base communication unit via a radio frequency communication channel; and an auxiliary receiver operable to receive the message from the base communication unit over tne radio frequency communication channel and produce an alarm to a user of the portable communication unit m response to the message .
Other features, objects and advantages will become apparent to one skilled m the art from the teachings herein.
BRIEF DESCRIPTION OF THE DRAWINGS For the purpose of illustrating the invention, there are shown m the drawing forms which are presently preferred, it being understood, however, that the invention is not limited to the precise arrangements and instrumentalities shown. Fig. 1 is a block diagram showing a system according to one aspect of the present invention;
Fig. 2 is a block diagram showing a system according to another aspect of the present invention; and Fig. 3 is a block diagram showing a system according to yet another aspect of the present invention.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
Referring now to the drawings wherein like numerals indicate like elements, there is shown m Fig. 1 a block diagram illustrating a communication system according to one aspect of the present invention. The system includes a base communication unit 10, a remote communication unit 20, an auxiliary transmitter 30 coupled with the remote communication unit 20, and an auxiliary receiver 40. The communication system may be a cellular telephone system, a pager system, or the like, where the invention is not limited by the particular type of communication system m use.
By way of example, when the communication system is a cellular telephone system, the base
communication unit 10 transmits and receives electromagnetic signals to and from the remote communication unit 20 over a radio frequency (RF) communications channel 12 (preferably a digital channel) . When the base communication unit 10 has a message for transmission to the remote communication unit 20, the base communication unit 10 transmits a "wake up" signal over the communication channel 12 to the remote communication unit 20 indicating that the remote communication unit 20 should be placed m an active mode sucn that the message may be received and two-way communication between the base communication unit 10 and the remote communication unit 20 may be achieved. It is preferred that the auxiliary transmitter 30 be integrated with the remote communication unit 20 such that the auxiliary transmitter may be activated and produce an alert signal m response to the remote communication unit 20 receiving the wake up signal from tne base communication unit 10. Typically, the base communication unit 10 will transmit the wake up signal over the communication channel 12 to cause the remote communication unit 20 to ring, vibrate, or provide illumination such that a user of the remote communication unit 20 may be alerted to the fact that the base communication unit 10 is signalling the remote communication unit 20. It is preferred that the auxiliary transmitter 30 be adapted to respond to the circuitry of the remote communication unit 20 which processes the wake up signal received from the base communication unit 10.
Tne auxiliary transmitter 30 preferably produces an alert signal m response to tne wake up
signal from the base communication unit 10 and transmits the alert signal to the auxiliary receiver 40 over wireless communication channel 32. In response, the auxiliary receiver 40 preferably produces an alarm perceivable by the user which indicates that the remote communication unit 20 has received a wake up signal from the base communication unit 10. Consequently, irrespective of where the user has placed the remote communication unit 20, the user is notified that the remote communication unit 20 has received a wake up signal from the base communication unit 10.
Preferably, the auxiliary receiver 40 includes an audible alarm unit, a luminous alarm unit, and/or a tactile alarm unit to produce the alarm to the user. When the auxiliary receiver 40 includes an audible alarm unit, it is preferred that the unit provide a beep and/or buzz sound in response to the alert signal received from the auxiliary transmitter 30. When the auxiliary receiver 40 employs a luminous alarm unit, it is preferred that the unit provide a flashing and/or continuous light alarm to the user in response to the alert signal from the auxiliary transmitter 30. When the auxiliary receiver 40 employs a tactile alarm unit, it is preferred that the unit provide a vibration alarm to the user m response to the alert signal received from the auxiliary transmitter 30.
The auxiliary receiver 40 is preferably sized and shaped such that it may be located on the user's person m a convenient location to provide the user with the alarm while not detracting from the user's appearance. It is most preferred that the auxiliary receiver 40 be substantially small and
compact such that it may not be seen or may be integrated with other personal items worn by the user.
For example, the auxiliary receiver 40 may be integrated with a piece of jewelry and/or an article of clothing of the user. The auxiliary receiver 40 is preferably integrated with a ring, broach, necklace, bracelet, earring, pm, watch, tie clip, or the like. The auxiliary receiver 40 may also be integrated with a hat, scarf, button, belt, bra, shoe, or the like. The invention is not limited by the user accessory with which the auxiliary receiver 40 is integrated.
It is noted that the remote communication unit 20 provides a plurality of functions to a user, such as two-way communication via telephone, status information (for example, signal strength information) , telephone number memory functions, or the like. It is preferred that the auxiliary receiver 40 provide substantially fewer functions than the remote communication unit 20, and preferably provides only the function of producing the alarm m response to the alert signal from the auxiliary transmitter 30. Reference is now made to Fig. 2 which shows a block diagram of a communication system according to another aspect of the present invention. By way of background, those skilled m the art will recognize that a substantial number of remote communication units 20 are currently m existence which do not enjoy that advantages of the present invention. As it is desirable to modify these remote communication units
20 to include the auxiliary transmitter 30, the present invention preferably provides a retrofit capability which enables existing remote communication
units 20 to add an auxiliary transmitter 30 after manufacture .
When an auxiliary transmitter 30 is to be added to a remote communication unit 20 after manufacture, it is desirable that the auxiliary transmitter 30 be coupled to the remote communication unit 20 without using hard wire electrical connections. This is so because to require such hard wire connections would result m complex and costly retrofit operations and render the use of the auxiliary transmitter 30 undesirable.
In order to achieve ease m retrofit operations, the present invention includes a sensor unit 30a coupled to the auxiliary transmitter 30 to the remote communication unit 20 without the need of hard wire electrical connections. The sensor unit 30a includes one or more sensor devices sensitive to the audible, luminous or tactile alerting devices of the remote communication unit 20. In particular, when the remote communication unit 20 employs an audible alerting device (such as a telephone ringer) , sensor unit 30a employs an audible sensing device (such as a microphone) to sense when the remote communication unit 20 is ringing. The sensor unit 30a preferably produces an alert signal m response to the sensed audible alert emanating from the remote communication unit 20 and provides the alert signal to the auxiliary transmitter 30. The auxiliary transmitter 30 then produces its own alert signal m response to the alert signal from the sensor unit 30a and transmits that signal over the wireless communication channel 32 to the auxiliary receiver 40 so that the user may be provided with an alarm therefrom.
It is evident from the above teaching that the sensor unit 30a may be integrally coupled with the auxiliary transmitter 30 but that no hard wire electrical connection need be made between the remote communication unit 20 and either the sensor 30a or auxiliary transmitter 30.
When the remote communication unit 20 employs a luminous alarm device or tactile alerting device, it is preferred that the sensor unit 30a include an appropriate sensing device, such as a light sensitive semiconductor device to sense the illumination from the remote communication unit 20 or a vibration sensing device, such as an accelerometer , to produce an alert signal when the remote communication unit 20 receives a wake up signal from the base communication unit 10.
Reference is now made to Fig. 3 which shows a block diagram of a communication system according to another aspect of the present invention. As was the case m previous embodiments, the communication system includes a base communication unit 10 and a remote communication unit 20 which are linked via communication channel 12. Unlike previous embodiments, however, the system of Fig. 3 includes an auxiliary receiver 50 capable of receiving a wake up signal directly from the base communication unit 10 over wireless communication channel 12.
Those skilled m the art will recognize that the remote communication unit 20 is typically provided with an identification code which is registered with the base communication unit 10 such that the base communication unit 10 may provide the wake up signal over communication channel 12 only to the corresponding remote communication unit 20 (not other
unrelated remote communication units 20) . In accordance with the invention, the auxiliary receiver 50 is provided with the capability of being programmed with the same or similar identification code as the corresponding remote communication unit 20 such that the auxiliary receiver 50 receives the wake up signal over channel 12 when the remote communication unit 20 receives the wake up signal. This is accomplished, for example, by providing the auxiliary receiver 50 with a programming system 50a (including, for example, an EEPROM) which contains the identification code. The auxiliary receiver 50 is preferably sized and shaped such that it may be located on the user's person m a convenient location to provide the user with the alarm while not detracting from the user's appearance. It is most preferred that the auxiliary receiver 50 be substantially small and compact such that it may not be seen or may be integrated with other personal items worn by the user. For example, the auxiliary receiver 50 may be integrated with a piece of jewelry and/or an article of clothing which is worn by the user. It is preferred that the auxiliary receiver 50 be integrated with a ring, broach, necklace, bracelet, earring, pm, watch, tie clip, or the like. Alternatively, the auxiliary receiver 40 may be preferably integrated with a hat, scarf, button, belt, bra, shoe, etc.
It is preferred that the auxiliary receiver 50 provide substantially fewer functions than the remote communication unit 20, and preferably provides only the function of producing the alarm m response to the wake up signal from the base communication unit
1 I
The user of a remote communication unit 20 according to this aspect of the present invention receives an indication that the remote communication unit 20 is receiving a wake up signal from the base communication unit 10 irrespective of where the remote communication unit 20 is located.
The foregoing description of the preferred embodiments of the present invention have been provided for the purposes of illustration and description. They are not intended to be exhaustive or to limit the invention to the precise forms disclosed. Many modifications and variations are possible m light of the above teaching. It is intended that the scope of the invention be limited not by this detailed description, but rather by the claims appended hereto.