USRE44142E1 - Radio scanner programmed from frequency database and method - Google Patents
Radio scanner programmed from frequency database and method Download PDFInfo
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- USRE44142E1 USRE44142E1 US12930519 US93051911A USRE44142E US RE44142 E1 USRE44142 E1 US RE44142E1 US 12930519 US12930519 US 12930519 US 93051911 A US93051911 A US 93051911A US RE44142 E USRE44142 E US RE44142E
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H60/00—Arrangements for broadcast applications with a direct linking to broadcast information or broadcast space-time; Broadcast-related systems
- H04H60/35—Arrangements for identifying or recognising characteristics with a direct linkage to broadcast information or to broadcast space-time, e.g. for identifying broadcast stations or for identifying users
- H04H60/38—Arrangements for identifying or recognising characteristics with a direct linkage to broadcast information or to broadcast space-time, e.g. for identifying broadcast stations or for identifying users for identifying broadcast time or space
- H04H60/41—Arrangements for identifying or recognising characteristics with a direct linkage to broadcast information or to broadcast space-time, e.g. for identifying broadcast stations or for identifying users for identifying broadcast time or space for identifying broadcast space, i.e. broadcast channels, broadcast stations or broadcast areas
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H60/00—Arrangements for broadcast applications with a direct linking to broadcast information or broadcast space-time; Broadcast-related systems
- H04H60/35—Arrangements for identifying or recognising characteristics with a direct linkage to broadcast information or to broadcast space-time, e.g. for identifying broadcast stations or for identifying users
- H04H60/49—Arrangements for identifying or recognising characteristics with a direct linkage to broadcast information or to broadcast space-time, e.g. for identifying broadcast stations or for identifying users for identifying locations
- H04H60/51—Arrangements for identifying or recognising characteristics with a direct linkage to broadcast information or to broadcast space-time, e.g. for identifying broadcast stations or for identifying users for identifying locations of receiving stations
Abstract
Description
1. Field of the Invention
The present invention relates to scanning radio receivers. More particularly, the present invention relates to a system and method of programming a scanning radio receiver by querying a frequency and linked descriptor database using a geographic search reference.
2. Description of the Related Art
Scanning radio receivers are devices that sequentially tune through plural radio frequencies until a pertinent radio broadcast is detected, at which time the scanning radio receiver stops the scanning process and receives the detected radio broadcast, usually routing the detected audio signals to a loudspeaker or earphone. The detection of a signal causes the scanning radio receiver to open a squelch gate that couples the received signals to the loudspeaker. Once the broadcast ceases, the squelch gate closes and the scanning radio receiver resumes the frequency scanning process. Scanning radio receivers are also called scanning radios, or simply “scanners.” Most scanners are capable of scanning several radio frequency bands. Examples of radio bands accessible with modern scanners are listed in Table 1.
TABLE 1
HF Band
25-29
MHz
VHF-Lo Band
30-50
MHz
VHF-Hi Band
144-174
MHz
UHF Band
406-512
MHz
800 MHz Band
806-1300
MHz
Radio frequency bands are defined by regulatory authorities, such as the Federal Communications Commission (FCC) in the United States. The list of bands above is not exhaustive, and those skilled in the art are familiar with other bands and numerous sub-bands within the listed bands. The nature of radio scanning is a real-time experience, as there are a great variety of radio communications active at any given instant in time, and, it is a matter of personal preference as to which kinds of communications are desirable, and deemed pertinent by any given user. Some popular kinds of communications include police, fire, emergency medical, weather, sports, aircraft, as well as others. The entities that conduct radio communications within these services are commercial, government, and private organizations that utilize radio systems configured for their particular needs, while remaining compliant with regulatory requirements. Several manufacturers make and sell radio systems that operate according to established standards or that are of a proprietary design. In such systems, one or more radio repeaters are typically employed. The repeaters enable fleets of radios to have broad area radio coverage by transmitting to and receiving from the radio repeaters, which receive and re-transmit (“repeat”) signals from the fleets of radios. Scanning radios generally monitor and receive broadcasts from the transmit side of the repeaters in one of two types of systems, “conventional” radio repeater systems and trunked groups of repeaters (“trunking systems”). In both cases the scanner sequentially scans multiple channels, looking for interesting and desirable broadcasts in real time.
Fleet radios commonly employ some form of analog or digital squelch management, which are controlled with squelch “tones.” These tones are detected by the fleet radios, and by scanners, and serve to open and close the receiver's squelch gate. In order to receive a conventional radio broadcast, a scanner must tune to the frequency of transmission, detect the presence of a predetermined squelch tone, and then open the squelch gate. During a scanning operation, plural frequencies are sequentially loaded into the receiver, and then briefly checked for the presence of an expected tone, which indicates the presence of a pertinent broadcast. When a matching broadcast is detected, scanning is ceased, the squelch gate opened, and the broadcast reproduced to the loudspeaker of the radio. Once the broadcast ceases, the lack of the tone causes the squelch gate to closes, and scanning is resumed.
Trunking systems comprise plural repeaters, typically numbering from 2 to 20, which are connected together and are shared by many radio fleets, thereby improving spectrum utilization efficiency. Control signaling is implemented in the trunked radio system radio protocol, which assigns frequencies and talk group codes in real time. These talk group codes direct the radio fleets as to which repeater frequencies to use in real time. In a typical conversation, the frequency of operation changes with every transmission. In order to scan a trunked system, the scanner must be programmed with all the frequencies of the trunked group and must be programmed with one or more talk group codes. One of the trunked repeaters may be assigned as a control channel, which is particularly monitored, looking for predetermined talk group codes that indicated desired broadcasts.
In prior art scanners, the user was responsible for gathering the needed frequencies, squelch tones, and talk group ID codes. These are then meticulously entered into the scanner using the keypad. This approach is tedious and prone to errors, some of which might never be detected, leading to missed reception opportunities. In addition, the user had to be familiar with the concepts of trunked versus conventional scanning, the arrangement and allocation of channels in the memory of the scanner, which is particularly complex in the case of trunked systems because of the storage of both radio frequencies and talk group codes. Additionally, since radio signals have limited range and since radio frequencies are reused over large distances, the user had to find frequencies, tones, and codes utilized in their geographic area before programming the operation of the scanner. Lists of frequencies, tones, and codes are available from a few sources on the Internet. While this simplifies the process of finding frequencies, tones and codes, the process of gathering, selecting, and programming still remains daunting, even to relatively sophisticated users. In prior art scanners, the display was used to indicate the present frequency of reception by displaying a numeric representation of the current frequency, tone or code. This approach was confusing to users because it is difficult to remember what service is using particular frequencies, etc. Some prior art scanners enabled to user to enter alphanumeric phrases that correspond to the service, and operated such that the phrase was displayed during reception. While this is an improvement during operation and reception of the scanner, it made the programming task even more difficult, particularly since most scanners merely had a telephone style numeric keypad. Thus it can be appreciated that there is a need in the art for a significantly simpler system and method of programming frequencies, tones and codes into a radio scanner that adapts to the geographic needs of the user and that provides recognizable indications of what service is being received.
The need in the art is addressed by the apparatus and methods of the present invention. The present invention teaches a method of operating a radio having a receiver, a channel memory and a display in conjunction with a frequency and linked descriptor database. The method includes querying the frequency and linked descriptor database using a geographic reference to produce a list of local radio channels that includes a list of frequencies with linked descriptors. It also includes transferring the list of radio channels into the channel memory, and, tuning the receiver to a frequency recalled from the list of radio channels while simultaneously displaying a descriptor linked to the frequency.
In a specific embodiment of the method, the geographic reference is selectively specified. In another embodiment, the method includes selectively enabling a portion of the list of local radio channels for transfer. In another embodiment, the radio includes a database memory containing the frequency and linked descriptor database. In another embodiment, the frequency and linked descriptor database is located on the Internet, and the querying step and the transferring step are accomplished through an Internet connection.
In a specific embodiment of the foregoing method includes coupling the radio to a communication port on a computer, and the transferring step occurs between the computer and the radio. In a refinement to this embodiment, the frequency and linked descriptor database is located on a network coupled to the computer, and, the query is accomplished by the computer through the network. In another embodiment, the radio includes a rechargeable battery, and the method further includes recharging the battery through the communications ports. In another embodiment, the computer includes a user interface, and the method further includes specifying the geographic reference through the computer user interface. In another embodiment, the radio is provided with a computer device driver and the method includes loading the device driver onto the computer and recognizing the connection of the radio to the computer by the device driver. In a further embodiment, the radio is provided with computer application software and the method includes loading the application software onto the computer and executing the application software on the computer. In another embodiment, the frequency and linked descriptor database is stored in the computer.
The present invention also teaches a radio apparatus for use in conjunction with a frequency and linked descriptor database. The apparatus includes a receiver, a channel memory, and a display, all of which are coupled to a controller. The controller operates to store a list of local radio channels that includes a list of frequencies with linked descriptors, which result from a query of the frequency and linked descriptor database using a geographic reference, into the channel memory. The controller further operates to tune the receiver to a frequency recalled from the list of radio channels and simultaneously display a descriptor linked to the frequency on the display.
In a specific embodiment of the apparatus, the geographic reference is communicated through the controller during the query of the frequency and linked descriptor database. In another embodiment, the apparatus further includes an actuator coupled to the controller. Actuation of the actuator causes the controller to enable a selective portion of the list of local radio channels to be stored in the channel memory. In another embodiment, the apparatus further includes a database memory coupled to the controller, which contains the frequency and linked descriptor database. In another embodiment, the frequency and linked descriptor database is located on the Internet, and the apparatus additionally includes a network interface. The controller operates to query the frequency and linked descriptor database through the network interface, and operates to receive the list of local radio channels trough the network interface.
In another specific embodiment of the apparatus, it is adapted for use in conjunction with a computer having a communication port. The apparatus further includes an interface port coupled to the controller and adapted to communicate with the computer communication port. The controller receives the list of local radio channels from the computer through the interface port. In another embodiment, the apparatus includes a battery that is electrically coupled to the interface port, and the battery is recharged with power received from the computer communication port. In another embodiment of the apparatus, the frequency and linked descriptor database is stored in the computer. In another embodiment, the apparatus is provided with application software adapted for execution by the computer. The application software operates to recognize the radio upon connection of the interface port to the communication port. In another embodiment, the frequency and linked descriptor database is located on a network coupled to the computer, and the application software operates to cause the computer to query the frequency and linked descriptor database through the network. In yet another embodiment, the computer includes a user interface, and the application software recognizes user input of the geographic reference through the user interface.
The present invention also teaches a method of operating a scanning radio, which has a receiver, a channel memory and a display, in conjunction with a frequency and linked descriptor database. The method includes querying the frequency and linked descriptor database using a geographic reference to produce a list of local radio channels that includes a list of frequencies with linked descriptors. It also includes transferring the list of local radio channels into the channel memory, and scanning the list of local radio channels by sequentially tuning the receiver to frequencies recalled from the list of frequencies stored in the channel memory while simultaneously displaying a descriptor linked to each of the recalled frequencies.
In a specific embodiment of the foregoing method, the scanner further includes a channel selection actuator, and the method further includes selectively enabling a portion of the list of local radio channels for sequential tuning during the scanning step. In another embodiment, the frequency and linked descriptor database further includes linked squelch tones, and the list of local radio channels further include a linked squelch tone that is linked with at least a first frequency. The scanning step further includes comparing a presently received squelch tone with the linked squelch tone, and enabling reception of a present frequency upon detecting a match between the received squelch to and the linked squelch tone.
In another specific embodiment of the method, the frequency and linked descriptor database further includes trunked groups of frequencies and linked system types, and the list of local radio channels further include a trunked group of frequencies and a linked system type. The scanning step further includes enabling reception of the trunked group of frequencies according to a trunking protocol corresponding to the linked system type. In a further refinement, the frequency and linked descriptor database includes linked trunked group codes, and the list of local radio channels further includes a linked trunked group code linked to the trunked group of frequencies. The scanning step further includes comparing a presently received trunked group code with the linked trunked group code, and enabling reception of a trunked system radio signal by tracking the trunked group frequencies in accordance with the trunking protocol upon detecting a match between the received trunked group code and the linked trunked group code. The method treats talk group ID codes, whole trunked systems and conventional frequencies as individual “things” to be scanned by the user.
In another embodiment of the method, the scanner further includes an interface port and is operated in conjunction with a computer having a communications port, the method further includes coupling the scanner interface port to the computer communication port. The transferring step transfers the list of local radio channels from the computer to the channel memory. In another embodiment, the frequency and linked descriptor database is located on a network coupled to the computer, and the querying step is initiated by the computer through the network. In another embodiment, the method further includes selectively enabling a portion of the list of local radio channels for transfer during the transferring step. In another embodiment, the scanner includes a battery electrically coupled to the interface port, and the method includes recharging the battery with power derived from the communications port.
In another specific embodiment of the method, the radio is provided with a computer device driver, and the method further includes loading the device driver onto the computer, and recognizing the connection of the radio interface port to the computer communication port by the device driver. In another specific embodiment, the frequency and linked descriptor database is stored in the computer. In another embodiment, the method further includes synchronizing the list of local radio channels in the computer with the present list of local radio channels in the channel memory.
In a refinement to the foregoing method, the computer includes a user interface and the method includes specifying the geographic reference through the computer user interface. In another embodiment, the method further includes selectively enabling a portion of the list of local radio channels for transfer during the transferring step by access to the computer user interface. In another refinement, the method includes presenting an indicia of the content of the list of local radio channels using the computer user interface, and initiating the transferring step by affirmative actuation using the computer user interface. In another embodiment, the radio is provided with computer application software, and, the method further includes loading the application software onto the computer and executing the application software on the computer. In yet another refinement, the computer application software enables selecting, adding, and deleting content from the list of local radio channels.
The present invention also teaches a scanning radio apparatus for use in conjunction with a frequency and linked descriptor database. The apparatus includes a receiver, a channel memory, and a display, all of which are coupled to a controller. The controller operates to store a list of local radio channels into the channel memory. The list of local radio channels includes a list of frequencies with linked descriptors, which result from a query of the frequency and linked descriptor database using a geographic reference. The controller further operates to sequentially tune the receiver to frequencies recalled from the list of frequencies stored in the channel memory while simultaneously displaying a descriptor linked to each of the recalled frequencies on the display, thereby scanning the list of frequencies.
In a specific embodiment, the scanning radio apparatus further includes a channel selection actuator coupled to the controller. Actuation of the channel selection actuator causes the controller selectively enable a portion of the list of local radio channels for sequential tuning during the scanning the list of frequencies operation. In another embodiment of the apparatus, the frequency and linked descriptor database further includes linked squelch tones, and the list of local radio channels further include a linked squelch tone that is linked with at least a first frequency. The controller stores the linked squelch tone in the channel memory, and compares a presently received squelch tone with the linked squelch tone during the scanning operation. The controller enables reception of a present frequency upon detecting a match between the received squelch to and the linked squelch tone.
In another specific embodiment of the apparatus, the frequency and linked descriptor database further includes trunked groups of frequencies and linked system types, and the list of local radio channels further includes a trunked group of frequencies and a linked system type. The controller stores the trunked group of frequencies and the linked system type in the channel memory, and enables reception of the trunked group of frequencies by the receiver according to a trunking protocol corresponding to the linked system type. In a refinement to this embodiment, the frequency and linked descriptor database further includes linked trunked group codes, and the list of local radio channels further includes a linked trunked group code linked to the trunked group of frequencies. The controller compares a presently received trunked group code with the linked trunked group code during the scanning operation, and enables the receiver to receive a trunked system radio signal by tracking the trunked group frequencies in accordance with the trunking protocol upon detecting a match between the received trunked group code and the linked trunked group code.
In a specific embodiment, the apparatus is adapted for use in conjunction with a computer having a communication port. The apparatus further includes an interface port coupled to the controller and adapted to communicate with the computer communication port. The controller receives the list of local radio channels from the computer through the interface port. In another embodiment, the frequency and linked descriptor database is stored in the computer. In another specific embodiment, the apparatus further includes a battery electrically coupled to the interface port, and, the battery is recharged with power received from the computer communication port.
In a specific embodiment of the scanning radio apparatus further includes application software adapted for execution by the computer. The application software operates to recognize the radio upon connection of the interface port to the communication port. In another embodiment, the frequency and linked descriptor database is located on a network coupled to the computer. The query of the frequency and linked descriptor database is initiated by the computer through the network. In another embodiment, the controller and the application software synchronize the list of local radio channels in the computer with the present list of local radio channels in the channel memory. In another embodiment, the computer includes a user interface, and the geographic reference is specified through the computer user interface. In another embodiment, a portion of the list of local radio channels is selectively enabled for transfer by the application software through interface with the computer user interface. In another embodiment, the application software presents an indicia of the content of the list of local radio channels using the computer user interface, and the transfer of the list of local channels to the channel memory occurs upon an affirmative actuation using the computer user interface. In yet another embodiment, the application software enables selecting, adding, and deleting content from the list of local radio channels.
Illustrative embodiments and exemplary applications will now be described with reference to the accompanying drawings to disclose the advantageous teachings of the present invention.
While the present invention is described herein with reference to illustrative embodiments for particular applications, it should be understood that the invention is not limited thereto. Those having ordinary skill in the art and access to the teachings provided herein will recognize additional modifications, applications, and embodiments within the scope hereof and additional fields in which the present invention would be of significant utility.
The present invention advances the art by providing an apparatus and method for greatly simplifying the process of finding interesting radio channels and programming them into a radio scanner. Through advantageous use of the teachings herein, users are no longer responsible for gathering the needed frequencies, squelch tones, and talk group codes during radio programming. The user is no longer required to meticulously enter such information into the scanner using the limited keypad typically employed. Furthermore, in the case of radio scanners compatible to receive trunked system broadcasts, users no longer need to familiarize themselves with the concepts of trunked versus conventional scanning, the arrangement and allocation of channels in the memory of the scanner, which is particularly complex in the case of trunked systems. The teachings of the present invention advantageously utilize existing database listings of frequencies, tones, and codes that are already available, with some accessible through the Internet.
The apparatus of one illustrative embodiment of the present invention has been named the “ScanPod”, which is a stylized contraction of the words “scanner” and “pod.” The term “pod” is appropriate for this embodiment because of the remarkably compact size and convenient shape of the product, which is distinctly difference from larger prior art radio scanners. The illustrative embodiments of the invention is directed to a USB port programmable scanner with a two-line, sixteen digit, or other suitably sized, display. Simplified user interface controls are provided, and include volume up-down, squelch up-down, scan, manual, service search, weather and other key actuators. The scanner of the illustrative embodiment is small, compact, and includes a high quality rechargeable battery with long charge cycle life, which is recharged through the USB port. Menu based control operation is provided using directional keys to navigate through a displayed menu system. So as to eliminate the requirement to remember discrete frequencies, textural descriptors are linked to discrete frequencies, to trunked systems, and to trunking system talk group identities. The textural descriptors are displayed by the scanner, and enable to user to select and deselect interesting and desirable radio channels by references to the descriptors alone, with no need to remember frequencies, tones or codes. In one mode of operation, all of the communications on a trunking system can be monitored, and this is referred to as “open mode” monitoring, in which a global list of talk group ID codes are enabled for reception. During scanning operation, the linked descriptor to the currently received communications is displayed, so that the user can quickly determine what service is active at any given moment.
The ScanPod illustrative embodiment is implemented without a numeric keypad, as was required in prior art scanner designs. This approach allows designers to make the product considerable smaller and more convenient to carry. This is possible because the product is programmed via PC computer download process using a software application supplied with the product. The application software is installed in the user's computer and is launched when the product is coupled to a communication port in the computer. A device driver detects the connection. On its initial launch, the application software prompts the user to enter their local ZIP Code or other geographic reference. The ZIP Code is used as a search parameter in a database look-up process. The search result is a list of local radio channels, which are automatically downloaded into a channel memory in the scanner product. The database search is configured to produce results most likely to be of interest to typical users and customers, and may include radio services such as police, fire, emergency, air traffic control, marine, ham, and others. The application software offers the user options to tailor the results in a number of ways. In one mode, the user can add or delete frequencies to personalize the programming of the ScanPod product. In addition to discrete frequencies, the list of local channels may include squelch tones, trunked systems with trunked group codes, and textural descriptors for each search result. In alternative embodiments, the database query is targeted to other specific user interests and service types, including race frequencies, digital trunking systems, 800 MHz systems, as well as UHF and VHF channels.
In another embodiment of the invention, the user loads a software driver into their personal computer and then couples the ScanPod product to the computer via a USB interface. The software is automatically launched, which prompts the user for a geographic reference, such as a ZIP code, city/state or county/state description. The geographic reference is coupled to a geographic server out on the Internet, which queries a frequency and linked descriptor database for local radio channel information. In a simple embodiment, the server merely downloads all of the frequencies, tones and codes for the county identified by the user. Once the information is stored into the ScanPod product, the user can scroll through a list of textural descriptors, enabling and disabling entries based on their monitoring desires. In other embodiments of the invention, the user can be offered menu choices on the personal computer screen interface to narrow down the number of listening options. This is useful in crowded urban environments, where the number of entries on the channel scan list can be overwhelming. Additionally, the application software provides for manual entry of channels not found in the database, as well as automatic periodic updates.
Reference is directed to
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The controller 52 is coupled to a display 62 and a keypad matrix 60. The display 62 in the illustrative embodiment is a two-line, sixteen-character liquid crystal display, however any suitable display technology and configuration may be employed. The keypad 60 in the illustrative embodiment is a limited function type, which is scanned by the controller 52 to detect user actuations thereof. The controller 52 is further coupled to a channel memory 58 and a data memory 56. The channel memory 58 is a random access memory that stores the local list of radio channels, which may include frequencies, squelch tones, trunked system frequency lists, trunked system type descriptors, trunked system talk group codes, and textural descriptors, all of which are linked in various ways described elsewhere herein. The data memory 56 is also a random access memory that is used for storage of the object code software that embodies the functional aspects of the scanner and other variable and data storage purposes, including the optional use of storing the entire frequency and linked descriptor database. The interface port 48 is also coupled to controller 48. In the illustrative embodiment, the interface port 48 is a universal serial port (“USB”) version 2.0 compliant port, however any suitable interface port may be employed. A high quality lithium ion battery 54 powers the entire scanning radio receiver. The battery 54 is coupled to receive electrical power from the interface port, which is used to recharge the battery 54 while the interface port 48 is coupled to another communication port 64 that is operable to source power to connected devices.
The scanning receiver illustrated in
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The TRANSFER OPTIONS presented by the application software in
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Thus, the present invention has been described herein with reference to a particular embodiment for a particular application. Those having ordinary skill in the art and access to the present teachings will recognize additional modifications, applications and embodiments within the scope thereof.
It is therefore intended by the appended claims to cover any and all such applications, modifications and embodiments within the scope of the present invention.
Claims (65)
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US12930519 USRE44142E1 (en) | 2005-12-21 | 2011-01-07 | Radio scanner programmed from frequency database and method |
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