CN1136238A - FM multiple broadcast receivers - Google Patents
FM multiple broadcast receivers Download PDFInfo
- Publication number
- CN1136238A CN1136238A CN96104139A CN96104139A CN1136238A CN 1136238 A CN1136238 A CN 1136238A CN 96104139 A CN96104139 A CN 96104139A CN 96104139 A CN96104139 A CN 96104139A CN 1136238 A CN1136238 A CN 1136238A
- Authority
- CN
- China
- Prior art keywords
- program
- sign indicating
- indicating number
- priority
- program sign
- Prior art date
- Legal status (The legal status 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 status listed.)
- Granted
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Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/06—Receivers
- H04B1/16—Circuits
- H04B1/1646—Circuits adapted for the reception of stereophonic signals
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H40/00—Arrangements specially adapted for receiving broadcast information
- H04H40/18—Arrangements characterised by circuits or components specially adapted for receiving
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H2201/00—Aspects of broadcast communication
- H04H2201/10—Aspects of broadcast communication characterised by the type of broadcast system
- H04H2201/13—Aspects of broadcast communication characterised by the type of broadcast system radio data system/radio broadcast data system [RDS/RBDS]
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- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Circuits Of Receivers In General (AREA)
- Channel Selection Circuits, Automatic Tuning Circuits (AREA)
Abstract
The invention provides a frequency modulated multiplex broadcast receiving device, which can arbitrarily set the priority at the time of automatic reception. The device is provided with a memory unit 16, used for storing a plurality of program codes with the priority arbitrarily regulated, a program codes regeneration part 15 used for regenerating the program codes included in the frequency modulated multiplex broadcast signal, and a consistency comparison circuit 17 used for comparing the consistency of the program codes stored in the memory unit 16 and the program codes output by the program codes regeneration part 15 according to priority; by means of the consistency comparison output of the consistency comparison circuit 17, the frequency range of the frequency modulated multiplex broadcast signal can be repeatedly searched and the state of the reception circuit that outputs digital signals is controlled.
Description
The present invention relates to frequency modulation (FM) multiple broadcast receivers.
The data of f-m multiplex broadcasting superimposed digital signal on voice signal send various Word messages and figure.Open in flat 5-226980 number [H03J 7/18] the spy, disclose as the FM multiple broadcast receivers that receives f-m multiplex broadcasting, when broadcasting urgent thing, transport information or preassigned program, can be based on the receiving system of these broadcasting of digital signal automatic reception that receive.In this FM multiple broadcast receivers, the priority with (1) urgent broadcast, (2) transport information, (3) appointed program automatically receives these broadcasting.
Though the FM multiple broadcast receivers of this prior art can be selected the automatic reception of (1) urgent broadcast, (2) transport information, (3) appointed program arbitrarily,, its priority is fixed, and the user can not change this priority.
The object of the present invention is to provide when automatic reception, can set the FM multiple broadcast receivers of priority arbitrarily.
Feature of the present invention is: stack comprises that have: the memory of a plurality of program sign indicating numbers of priority has been set arbitrarily in storage in the FM multiple broadcast receivers of f-m multiplex broadcast singal of digital signal of program sign indicating number on being received in the f-m stereo acoustical signal; The regenerate program code regeneration part of included program sign indicating number in the aforementioned f-m multiplex broadcast singal; According to aforementioned priority, program sign indicating number of storing in the aforementioned memory and the program sign indicating number of partly exporting from aforementioned program code regeneration are carried out consistency consistency comparison circuit relatively.By means of relatively exporting, search for the frequency band of aforementioned f-m multiplex broadcast singal repeatedly, the state of the receiving circuit of the aforementioned digital signal of control output from the consistency of aforementioned consistency comparison circuit.
Also have, feature of the present invention is, in the FM multiple broadcast receivers of the f-m multiplex broadcast singal of the digital signal that comprises the program sign indicating number of on being received in the f-m stereo acoustical signal, superposeing, have: the input unit of setting the program sign indicating number arbitrarily, according to input signal from this input unit, the memory of a plurality of program sign indicating numbers of priority has been set arbitrarily in storage, the regenerate program code regeneration part of included program sign indicating number in the aforementioned f-m multiplex broadcast singal, according to aforementioned priority, program sign indicating number of storing in the aforementioned memory and the program sign indicating number of partly exporting from aforementioned program code regeneration are carried out consistency consistency comparison circuit relatively; By means of relatively exporting, search for the frequency of aforementioned f-m multiplex broadcast singal repeatedly, the receiving circuit state of the aforementioned digital signal of control output from the unanimity of aforementioned consistency comparison circuit.
Feature of the present invention is, with the priority of the program sign indicating number stored in the input sequence predetermined memory from input unit.
Feature of the present invention is, control receiving circuit, the high program of make it in the frequency band that preferential reception searched in the f-m multiplex broadcast singal, storing in the aforementioned memory of a plurality of program sign indicating number priority.
In FM multiple broadcast receivers of the present invention, when receive comprise with memory in the regulation of storing during the f-m multiplex broadcast singal of the consistent program sign indicating numbers of a plurality of program sign indicating numbers of priority, the State Control of receiving circuit just is provided.
Can set priority as the input sequence of pressing input unit, in receiving a plurality of program sign indicating numbers of having imported during plural program, the program that selective reception priority is high.
Fig. 1 is the block diagram that FM multiple broadcast receivers of the present invention is shown;
Fig. 2 is the figure that the formation of program code memory in the FM multiple broadcast receivers of the present invention is shown;
Fig. 3 is the figure that display part and importation in the FM multiple broadcast receivers of the present invention are shown;
Fig. 4 is the flow chart that is used for illustrating program settings operation in the FM multiple broadcast receivers of the present invention;
Fig. 5 is the flow chart that is used for illustrating automatic reception operation in the FM multiple broadcast receivers of the present invention.
Below, with reference to the description of drawings embodiment of the invention.
Fig. 1 is the block diagram that FM multiple broadcast receivers of the present invention is shown.Among Fig. 1, T represents receiving circuit.1 is antenna; 2 for receiving the f-m multiplex broadcast singal from antenna 1, and it is transformed into the front end of given intermediate-freuqncy signal; 3 for delivering to oscillation signals according in phase-locked loop (PLL) circuit on the front end 2, as is generally known, it is by the voltage controlled oscillator (VCO) of output oscillation signals according, the output of VCO with frequency dividing ratio N (N is an integer) mark
Frequency divider, reference-frequency oscillator (OSC), from
The phase comparator that the phase place of the frequency division of frequency divider output and phase place from the reference frequency signal of reference-frequency oscillator (OSC) are compared, the output signal of accepting phase comparator are the filter formation of delivering to corresponding to the control voltage of phase error on the voltage controlled oscillator.
4 is the intermediate-freuqncy signal fm demodulation from front end 2, the FM detector of output fm demodulation signal; 5 for carrying out the output of FM detector 4 multiplexer of stereo demodulation; 6 for amplifying, output to the amplifier on the loud speaker to the stereophonic signal from multiplexer 5.
7 for from the output signal of FM detector 4, extract multiplex's information, centre frequency is the band pass filter of 76KHz; 8 is by means of the signal by band pass filter 7 being carried out LMSK (the minimum offset keying of level control) processing, Synchronous Processing and correction process, the multiplexing signal demodulation section of demodulation multiplexing signal.
9 for showing the display part of receive frequency, Word message etc.; 10 is key input part (input unit); 11 for providing the broadcast receiver sound power control circuit of power supply to multiplexer 5 and amplifier 6.
12 is control section, its control utilize 8 demodulation of multiplexing signal demodulation section processing, PLL circuit 3, display part 9 and the broadcast receiver sound power circuit 11 of multiplexing signal, it is by the channel selection control circuit 13 that the frequency of oscillation of PLL circuit 3 is controlled; To utilize 8 demodulation of multiplexing signal demodulation section multiplexing signal carry out multiplex's data decode of demodulation process and multiplex's program Regeneration Treatment/program regeneration control circuit 14; Based on the program identification code that comprises in the numerical data of utilizing multiplex's data decode/program regenerative circuit 14 to decode, multiplex's program identification circuit 15 of identification program; Storage is from the program code memory 16 of the program sign indicating number of key input part 10 inputs; The output of the output of multiplex's program identification circuit 15 and program code memory is compared, according to consistency detection circuit 17 formations of comparative result control broadcast receiver sound power circuit 11.As shown in Figure 2, program code memory 16 has: first space of storing the program sign indicating number in each address corresponding with the priority of automatic reception program; With second space of storing corresponding with it frequency data.
Fig. 3 is the figure that the concrete formation of display part 9 and key input part 10 is shown, and display part 9 has frequency display part 18, multiplex broadcasting data display part 19, priority display part 20a～20f; Key input part 10 has channel selection key 21, program preset key 22, program guide key 23a～23f.Correspond respectively to program guide key 23a～23f and be provided with priority display part 20a～20f, use the numeral priority.
Below, the operation of the f-m multiplex receiving system of above-mentioned formation is described.
At first, with reference to the flow chart of Fig. 4, the setting operation of automatic reception program is described.In the present embodiment, 6 programs such as urgent broadcast, transport information, weather forecast, news, sports, music are arranged though the program of automatic reception is set in supposition,, be not limited thereto.Display program title in program guide key 23, the program order of user to want to receive pressed this program guide key 23.
When pressing program preset key 22, (step 1) is program code memory zero clearing (step 2) just to become the program settings state.The pointer that expression is write the address is set in (step 3) on first priority; When pressing program guide key 23, produce corresponding program sign indicating number, this program sign indicating number stores in first district of address (first priority) of pointer indication in the program code memory 16 ( step 4,5).And pointer points to (step 6) on the address of second priority.Then, when pressing program guide key 23, this program sign indicating number stores in first district of second address; After, until has expired in first district of program code memory 16 or, press before the program preset key 22, whenever press Menu key 23 once, pointer is with regard to stepping, successively the program sign indicating number stored in first district of program code memory 16 (going on foot 4～8).
Moreover in step 3 and 6, when setting pointer value, the timer operation that just picks up counting is after setting pointer value, to passing through certain time interval T, if not actions menu key or preset key just terminate this processing.
When setting above-mentioned program, when pressing program guide key 23, priority sequentially shows on priority display part 20a～20f since 1 at every turn.The relevant program of not setting does not show on the priority display part 20a～20f of correspondence or shows 0.
For example, when setting priority with the order of urgent broadcast, weather forecast, news, order is pressed: program preset key 22, program guide key 23a, 23b, 23d, program preset key 22.By means of this operation, priority display part 20a, 20b, 20d demonstrate " 1 ", " 2 ", " 3 " respectively.
When the setting of priority finished, channel selection control circuit control PLL circuit 3 made it to search in the f-m multiplex broadcast band.According to the flow chart of Fig. 5, this operation is described.Utilize PLL circuit 3, set frequency dividing ratio N (step 101) corresponding to the frequency band low-limit frequency.Utilize step 102 to receive incoming level under the broadcasting wave situation more than the set-point, carrying out the following processing of step 103; Not having to proceed to step 109 under the situation about receiving, make frequency dividing ratio N stepping.In step 103, when receiving the f-m multiplex signal, utilize multiplexing signal demodulation section 8 the f-m multiplex signal demodulation that receives; Utilize multiplex's data decode/program regeneration control circuit 14, numerical data decode (step 104).Utilize the program sign indicating number in the numerical data that multiplex's program identification circuit 15 identification decoded, be entered on the consistency detection circuit 17.When input program sign indicating number, at first, the program sign indicating number of storing in the address of first priority (urgent broadcast) is outputed on the consistency detection circuit 17 from program code memory 16.With compare (step 105) from the program sign indicating number of multiplex's program identification circuit 15 input, if program sign indicating number unanimity, just corresponding to this moment frequency frequency dividing ratio N store in second district of program code memory 16 (step 107); If inconsistent, just proceed to step 108.In step 108, when relatively finishing, proceed to step 109 with whole program sign indicating numbers of storing in the program code memory 16, make frequency dividing ratio N stepping.Under the more unclosed situation of whole program sign indicating numbers, the program sign indicating number of next priority is outputed on the consistency detection circuit 17 from program code memory 16, carry out the comparison (step 105) of program sign indicating number.
When in second consistent based on the program sign indicating number, as frequency dividing ratio N to be stored into program code memory 16 district, if simultaneously storage representation frequency dividing ratio N whether store the particular address in second district into or the 3rd district of newly appending in sign, just can by means of with reference to the existence of this sign, prevent from processing after this, to rewrite frequency dividing ratio.
Utilize step 110, to frequency dividing ratio N greater than numerical value corresponding to the frequency band highest frequency before, all carry out step 102～109 processing.When frequency dividing ratio N greater than corresponding to the numerical value of frequency band highest frequency the time, be preface, second district that checks program code memory 16 with the high address of priority, if in which address, all do not storing this frequency dividing ratio N, just this processing end.If storing the data of frequency dividing ratio N, just in this moment, N is set in the PLL circuit 3 this frequency dividing ratio, receives processing (step 114), power supply is delivered on multiplexer 5 and the amplifier 6 from broadcast receiver power circuit 11, the high program of priority is exported from loud speaker LR.
Like this, utilizing key input part to set in the program program that preferentially automatic reception priority is high.Moreover, in the present embodiment, though the example that illustrates is just imported with key input part all, but, make the urgent broadcast override, in first address of program code memory 16, often storing the program sign indicating number of representing urgent broadcast, good with the program that input unit is imported below second priority.
Moreover, in the present embodiment, though as the control of receiving circuit explanation be about power supply being delivered to the situation on multiplexer 5 and the amplifier 6,, be not limited thereto, light the multiplex broadcasting data display unit good.
Illustrated, if according to the present invention, the user just can set the priority of ground regulation automatic reception program arbitrarily as top.
Claims (4)
1. FM multiple broadcast receivers that is received in the f-m multiplex broadcast singal of the digital signal that comprises the program sign indicating number of superposeing on the f-m stereo acoustical signal is characterized in that this device has:
The memory of a plurality of program sign indicating numbers of priority has been set arbitrarily in storage,
The regenerate program code regeneration part of included program sign indicating number in the described f-m multiplex broadcast singal,
According to described priority, program sign indicating number of storing in the described memory and the program sign indicating number of partly exporting from described program code regeneration are carried out consistency consistency comparison circuit relatively;
By means of relatively exporting, search for the frequency band of described f-m multiplex broadcast singal repeatedly, the state of the receiving circuit of the described digital signal of control output from the consistency of described consistency comparison circuit.
2. FM multiple broadcast receivers that is received in the f-m multiplex broadcast singal of the digital signal that comprises the program sign indicating number of superposeing on the f-m stereo acoustical signal is characterized in that having in this device:
Set the input unit of program sign indicating number arbitrarily,
According to the input signal from this input unit, the memory of a plurality of program sign indicating numbers of priority has been set arbitrarily in storage,
The regenerate program code regeneration part of included program sign indicating number in the described f-m multiplex broadcast singal,
According to described priority, program sign indicating number of storing in the described memory and the program sign indicating number of partly exporting from described program code regeneration are carried out consistency consistency comparison circuit relatively;
Relatively export by means of unanimity, search for the frequency band of described f-m multiplex broadcast singal repeatedly, the state of the receiving circuit of the described digital signal of control output from described consistent comparison circuit.
3. according to the FM multiple broadcast receivers described in the claim 2, it is characterized in that, with the priority of the program sign indicating number stipulating from the input sequence of described input unit to store in the described memory.
4. according to the FM multiple broadcast receivers described in the claim 1,2 or 3, it is characterized in that, control described receiving circuit and make it in the frequency band that preferential reception searched in the f-m multiplex broadcast singal the high program of storing in the described memory of a plurality of program sign indicating number priority.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7069743A JPH08265192A (en) | 1995-03-28 | 1995-03-28 | Fm multiplex broadcast receiver |
| JP69743/95 | 1995-03-28 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1136238A true CN1136238A (en) | 1996-11-20 |
| CN1088294C CN1088294C (en) | 2002-07-24 |
Family
ID=13411597
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN96104139A Expired - Fee Related CN1088294C (en) | 1995-03-28 | 1996-03-28 | FM multiple broadcast receivers |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JPH08265192A (en) |
| KR (1) | KR100194992B1 (en) |
| CN (1) | CN1088294C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW448666B (en) * | 1999-01-28 | 2001-08-01 | Ibm | Method and apparatus for automotive radio time shifting personalized to multiple drivers |
-
1995
- 1995-03-28 JP JP7069743A patent/JPH08265192A/en active Pending
-
1996
- 1996-03-27 KR KR1019960008560A patent/KR100194992B1/en not_active IP Right Cessation
- 1996-03-28 CN CN96104139A patent/CN1088294C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1088294C (en) | 2002-07-24 |
| KR960036307A (en) | 1996-10-28 |
| KR100194992B1 (en) | 1999-06-15 |
| JPH08265192A (en) | 1996-10-11 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20020724 Termination date: 20100328 |