CN101126803B - GPS and integrated circuit controlled thereby and the integrated circuit manufacture method - Google Patents
GPS and integrated circuit controlled thereby and the integrated circuit manufacture method Download PDFInfo
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- CN101126803B CN101126803B CN200610111419XA CN200610111419A CN101126803B CN 101126803 B CN101126803 B CN 101126803B CN 200610111419X A CN200610111419X A CN 200610111419XA CN 200610111419 A CN200610111419 A CN 200610111419A CN 101126803 B CN101126803 B CN 101126803B
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Abstract
The utility model discloses a global positioning system and a control integrated circuit and a method for making the control integrated circuit, comprising a control unit, a GPS radio frequency processing circuit and a storage unit. The control unit comprises a microprocessor and a mask read-only memory, the mask ROM stores a piece of reference information. The GPS radio frequency processing circuit is coupled with the control unit to receive a radio frequency signal, and converts the radio frequency signal to a fundamental frequency signal or an intermediate frequency signal and transmits to the control unit. The storage unit is coupled with the control unit to temporarily store a program code, the microprocessor executes the program code and references the reference information to enablethe function of the global positioning system.
Description
Technical field
The present invention relates to a kind of Global Positioning System (GPS) (Global Positioning System; GPS) and its implementation, relate in particular to a kind of Global Positioning System (GPS) and its implementation with light shield ROM (read-only memory), and the control integrated circuit and preparation method thereof that adopts the Global Positioning System (GPS) of light shield ROM (read-only memory).
Background technology
Global Positioning System (GPS) is widely used in the middle of the life, for example the navigational system of automobile.As shown in Figure 1, Fig. 1 is the system block diagrams of Global Positioning System (GPS).Global Positioning System (GPS) 100 includes microprocessor 110, GPS rf processing circuitry 120, audio treatment unit 130, flash memory 140, synchronous random access internal memory 150, input/output interface 160 and display apparatus module 170.The radiofrequency signal that GPS rf processing circuitry 120 receives from satellite by antenna 125 is converted to this radiofrequency signal after the fundamental frequency signal, is sent to microprocessor 110.Flash memory 140 is generally the flash memory of NAND type, be used for store program code and map datum, before the executive routine code, program code can be earlier by temporary to access speed synchronous random access internal memory (Synchronous Dynamic Random Access Memory faster; SDRAM) 150.Microprocessor 110 is carried out the program code that is temporary in the synchronous random access internal memory 150, handles from the fundamental frequency signal of GPS rf processing circuitry 120 and the map datum in the reference flash memory 140, reaches the purpose of satnav.The locating information that microprocessor 110 is produced can show by display apparatus module 170, or by after audio treatment unit 130 decodings and amplifying, by loudspeaker 135 signal frequently of sounding.In addition, locating information also can be sent to other electronic equipment via the input/output interface 160 that is coupled to microprocessor 110, for example computing machine etc.More common input/output interface can be universal serial bus (Universal Serial Bus; USB) or asynchronous serial connection mouthful (Universal AsynchronousReceiver Transmitter; UART).
Generally speaking, the content of map datum is huge, need take a large amount of memory headrooms, so the jumbo flash memory 140 of Global Positioning System (GPS) 100 necessary uses, causes the increase of cost.
Summary of the invention
Technical matters to be solved by this invention be to provide a kind of Global Positioning System (GPS) with light shield ROM (read-only memory) and control integrated circuit thereof with and the method for making of control integrated circuit, huge map datum is stored in the light shield ROM (read-only memory) to reduce cost.
For achieving the above object, the invention discloses a kind of Global Positioning System (GPS), include a control module, a GPS rf processing circuitry and a storage element.This control module comprises a microprocessor and a light shield ROM (read-only memory), and this light shield ROM (read-only memory) stores a reference information.This GPS rf processing circuitry is coupled to this control module, is used for receiving a radiofrequency signal, and this radiofrequency signal is converted to fundamental frequency or intermediate-freuqncy signal and is sent to this control module.This storage element is coupled to this control module, is used for a temporary program code, this microprocessor system carry out this program code and with reference to this reference information to realize the function of this Global Positioning System (GPS).This reference information is a map datum.
The present invention provides a kind of method that realizes a Global Positioning System (GPS) function in addition, includes: a control module is provided, and this control module includes the light shield ROM (read-only memory) of a microprocessor and a record one reference information; One GPS rf processing circuitry is provided, is coupled to this control module; Utilize this GPS rf processing circuitry to receive a radiofrequency signal, this radiofrequency signal is converted to fundamental frequency or intermediate-freuqncy signal and is sent to this control module; One storage element is provided, is coupled to this control module; One program code is temporary in this storage element; And utilize this microprocessor to carry out this program code and with reference to this reference information, to realize the function of this Global Positioning System (GPS).
The present invention discloses a kind of control integrated circuit of Global Positioning System (GPS) in addition, this control integrated circuit is integrated and is comprised a microprocessor and a light shield ROM (read-only memory), this light shield ROM (read-only memory) stores a reference information, this control integrated circuit by the computing of microprocessor and with reference to this reference information to realize the function of this Global Positioning System (GPS), this reference information is a map datum.
The present invention discloses a kind of method of making the control integrated circuit of Global Positioning System (GPS) in addition, includes: a microprocessor and a light shield ROM (read-only memory) of making this control integrated circuit on the semiconductor substrate; And design at least one layer data light shield in order to define the data content of this light shield ROM (read-only memory); Computing and the data content that read this light shield ROM (read-only memory) function that realize this Global Positioning System (GPS) of this control integrated circuit system by this microprocessor wherein; This step that designs this data light shield also includes: design this data light shield according to a map datum; This light shield ROM (read-only memory) after wherein finishing stores this map datum, and this microprocessor reads the function that this map datum is realized this Global Positioning System (GPS).
Adopt utilization of the present invention on control chip, to integrate the light shield ROM (read-only memory), will need jumbo map datum to leave in the lower-cost light shield ROM (read-only memory) originally, save the cost of system, and can increase the elasticity of revising map datum.
Description of drawings
Fig. 1 is the system block diagrams of Global Positioning System (GPS);
Fig. 2 is the system block diagrams of first embodiment of Global Positioning System (GPS) of the present invention;
Fig. 3 is the system block diagrams of second embodiment of Global Positioning System (GPS) of the present invention;
Fig. 4 is the system block diagrams of the 3rd embodiment of Global Positioning System (GPS) of the present invention;
Fig. 5 is the system block diagrams of the 4th embodiment of Global Positioning System (GPS) of the present invention.
100,200,300,400,500: Global Positioning System (GPS)
110,212,312,412,512: microprocessor
210,310,410,510: control module
120,220:GPS rf processing circuitry
125,225: antenna
130,230: audio treatment unit
135,235: loudspeaker
140,320,420: flash memory
150,250: the synchronous random access internal memory
160,260: input/output interface
170,270: display apparatus module
215,315,415,515: the light shield ROM (read-only memory)
Embodiment
In the middle of instructions and follow-up claim, used some vocabulary to censure specific element.The person with usual knowledge in their respective areas should understand, and hardware manufacturer may be called same element with different nouns.This instructions and follow-up claim are not used as distinguishing the mode of element with the difference of title, but the criterion that is used as distinguishing with the difference of element on function.Be an open term mentioned [comprising] in the middle of instructions and the follow-up request item in the whole text, so should be construed to [comprise but be not limited to].In addition, [couple] speech and comprise any indirect means that are electrically connected that directly reach at this.Therefore, be coupled to one second device, then represent this first device can directly be electrically connected in this second device, or be electrically connected to this second device indirectly by other device or connection means if describe one first device in the literary composition.
See also Fig. 2, Fig. 2 is the system block diagrams of first embodiment of Global Positioning System (GPS) of the present invention.Global Positioning System (GPS) 200 includes control module 210, GPS rf processing circuitry 220, audio treatment unit 230, synchronous random access internal memory 250, input/output interface 260 and display apparatus module 270.The radiofrequency signal that the GPS rf processing circuitry similarly receives from satellite by antenna 225 is sent to control module 210 with fundamental frequency or intermediate-freuqncy signal after frequency downconversion.In this embodiment, control module (or is called control integrated circuit, be control IC) 210 microprocessor 212 of integration and light shield ROM (read-only memory) 215, when making control module 210, utilize the mode of semiconductor process on semiconductor substrate, to make microprocessor 212, and design at least one layer data light shield, utilizing this data light to cover on and make light shield ROM (read-only memory) 215 on the same semiconductor substrate, also is that microprocessor 212 is to be produced on simultaneously in the same semi-conductor chip with light shield ROM (read-only memory) 215.The data content that is recorded in the light shield ROM (read-only memory) 215 can change by the mask pattern of this data light shield of design, in the time of will changing the storage data of light shield ROM (read-only memory) 215 in the future, only needs to revise or redesign this data light shield to get final product.In this embodiment, light shield ROM (read-only memory) 215 stores originally in Global Positioning System (GPS) 100, be stored in map datum and program code in the flash memory 140, that is to say, the data light shield is that data and program code design according to the map, therefore utilizes the produced light shield ROM (read-only memory) 215 of coming of this data light shield just to store this map datum and program code.In the time of Global Positioning System (GPS) 200 runnings, microprocessor 212 is read program code and keep in to synchronous random access internal memory 250 from light shield ROM (read-only memory) 215 earlier, then begins the executive routine code.Fundamental frequency or intermediate-freuqncy signal after 220 frequency reducings of microprocessor 212 calculation process process GPS rf processing circuitry, and, realize the positioning function of Global Positioning System (GPS) 200 with reference to the map datum in the light shield ROM (read-only memory) 215.The information of finishing behind the location can show by display apparatus module 270, or via after audio treatment unit 230 switching signal forms and the amplifying signal, broadcasts voice by loudspeaker 235, notifies the user locating information.In addition, control module 210 can be connected to miscellaneous equipment by input/output interface 260, for example computing machine, PDA etc., and more common input/output interface 260 can be universal serial bus or asynchronous serial connection mouth.
In the above-described embodiment, the huge map datum of program code and content is all stored by light shield ROM (read-only memory) 215, but not be stored in the flash memory, compared to flash memory, the cost of manufacture of light shield ROM (read-only memory) is cheaper, and the content of changing the light shield ROM (read-only memory) also only needs to change one or more layers of data light shield in operation and gets final product, and therefore adopts the Global Positioning System (GPS) of light shield ROM (read-only memory) significantly to reduce cost.
Consult Fig. 3, Fig. 3 is the system block diagrams of second embodiment of Global Positioning System (GPS) of the present invention.Global Positioning System (GPS) 300 includes control module 310, GPS rf processing circuitry 220, audio treatment unit 230, synchronous random access internal memory 250, input/output interface 260, display apparatus module 270 and flash memory 320.Label and last embodiment components identical have identical functions, repeat no more in this.Control module (or be called control integrated circuit, i.e. control IC) 310 a same microprocessor 312 and light shield ROM (read-only memory) 315 integrated.The method for making of control module 310 is identical with control module 210, therefore repeats no more.Different is, among this embodiment, light shield ROM (read-only memory) 315 is used for the storage place diagram data, program code originally then is stored in the flash memory 320, that is to say that the data light shield that is used for making light shield ROM (read-only memory) 315 is that data design according to the map, therefore utilize the produced light shield ROM (read-only memory) 315 of coming of this data light shield just to store this map datum.During operation, microprocessor 312 is similarly carried out to synchronous random access internal memory 250 program code is temporary earlier again, and calculation process is through fundamental frequency or intermediate-freuqncy signal after 220 frequency reducings of GPS rf processing circuitry, and, realize the positioning function of Global Positioning System (GPS) 300 with reference to the map datum in the light shield ROM (read-only memory) 315.In a preferred embodiment, flash memory 320 can be the NOR flash memory, because the NOR flash memory has advantages such as speed is fast, therefore is fit to be used for store program code, and makes things convenient for Global Positioning System (GPS) 300 refresh routine codes.The program code storage area required with respect to map datum is less, therefore flash memory does not need too big capacity, the huge map datum of data volume still is stored in light shield ROM (read-only memory) 315, compared to existing Global Positioning System (GPS) 100, still can reach cost-effective purpose.Similarly, in this embodiment, the replacing map datum only need be changed one or more layers of data light shield and get final product, the refresh routine code is then more easy, only need upgrade the content of flash memory 320, and the quickening of the reading speed of program code, help to improve the usefulness of system.
Consult Fig. 4, Fig. 4 is the system block diagrams of the 3rd embodiment of Global Positioning System (GPS) of the present invention.Global Positioning System (GPS) 400 includes control module 410, GPS rf processing circuitry 220, audio treatment unit 230, synchronous random access internal memory 250, input/output interface 260, display apparatus module 270 and flash memory 420.Label and last embodiment components identical have identical functions, repeat no more in this.Control module (or be called control integrated circuit, i.e. control IC) 410 a same microprocessor 412 and light shield ROM (read-only memory) 415 integrated.The method for making of control module 410 is identical with control module 210, therefore repeats no more.Among this embodiment, light shield ROM (read-only memory) 415 is used for storage place diagram data and program code equally, that is to say, the data light shield that is used for making light shield ROM (read-only memory) 415 is that data and program code design according to the map, therefore utilizes the produced light shield ROM (read-only memory) 415 of coming of this data light shield just to store this map datum and program code.During operation, microprocessor 412 is similarly carried out to synchronous random access internal memory 250 program code is temporary earlier again.Flash memory 420 is used for storing the correction data of map, when microprocessor 412 will read map datum, searches the correction data of map in the flash memory 420 earlier, if there is not needed information, then reads uncorrected map datum again from light shield ROM (read-only memory) 415.In a preferred embodiment, flash memory 420 can be a nand flash memory.Similarly, in this embodiment, the replacing map datum only need be changed one or more layers of data light shield and get final product.The advantage of Global Positioning System (GPS) 400 is, when the data volume of map correction data is little, can with the correction deposit data of map in extra flash memory 420, just need when having only fraction to upgrade, map datum must not change light shield one time thus.Note that flash memory 420 can be that built-in or external mode is connected in Global Positioning System (GPS) 400, more flexible when making by a small margin updating map data.
Consult Fig. 5, Fig. 5 is the system block diagrams of the 4th embodiment of Global Positioning System (GPS) of the present invention.Global Positioning System (GPS) 500 includes control module 510, GPS rf processing circuitry 220, audio treatment unit 230, synchronous random access internal memory 250, input/output interface 260, display apparatus module 270, flash memory 320 and flash memory 420.This embodiment is the combination of preceding two embodiment, and label has identical functions with embodiment components identical before, repeats no more in this.Control module (or be called control integrated circuit, i.e. control IC) 510 a same microprocessor 512 and light shield ROM (read-only memory) 515 integrated.The method for making of control module 510 is identical with control module 210, therefore repeats no more.Among this embodiment, light shield ROM (read-only memory) 515 is used for the storage place diagram data, program code then is stored in the flash memory 320, that is to say that the data light shield that is used for making light shield ROM (read-only memory) 515 is that data design according to the map, therefore utilize the produced light shield ROM (read-only memory) 515 of coming of this data light shield just to store this map datum.During operation, microprocessor 512 is carried out to synchronous random access internal memory 250 program code is temporary earlier again.Flash memory 420 is used for storing the correction data of map, when microprocessor 512 will read map datum, searches the correction data of map in the flash memory 420 earlier, if there is not needed information, then reads uncorrected map datum again from light shield ROM (read-only memory) 515.In a preferred embodiment, flash memory 320 can be the NOR flash memory, and flash memory 420 can be a nand flash memory.Similarly, in this embodiment, flash memory 420 makes in can being or external mode is connected in Global Positioning System (GPS) 500.The correction data that note that program code and map also can be stored in the same flash memory, for example, flash memory 320 or flash memory 420, then Global Positioning System (GPS) 500 only needs a flash memory to get final product.
The present invention utilizes and integrate the light shield ROM (read-only memory) on control chip, will need jumbo map datum to leave in the lower-cost light shield ROM (read-only memory) originally, saves the cost of system; And original program code can leave in the same light shield ROM (read-only memory) or deposit in other storage device.When map datum changes, only need to revise or redesign the pattern of light shield, can change the content of light shield ROM (read-only memory) easily.When if the amplitude of map datum change is little, also can with the correction deposit data of map in built-in or external flash memory, increase the elasticity of revising map datum.
Certainly; the present invention also can have other various embodiments; under the situation that does not deviate from spirit of the present invention and essence thereof; being familiar with those of ordinary skill in the art ought can make various corresponding changes and distortion according to the present invention, but these corresponding changes and distortion all should belong to the protection domain of the appended claim of the present invention.
Claims (9)
1. a Global Positioning System (GPS) is characterized in that, includes:
One control module, comprise a microprocessor and a light shield ROM (read-only memory), this light shield ROM (read-only memory) is made according to a data light shield, and this data light shield designs according to a map datum and a program code, and this light shield ROM (read-only memory) stores this map datum and this program code;
One GPS rf processing circuitry is coupled to this control module, is used for receiving a radiofrequency signal, and this radiofrequency signal is converted to fundamental frequency or intermediate-freuqncy signal and is sent to this control module; And
One first storage element is coupled to this control module;
Wherein, this microprocessor is read this program code and temporary to this first storage element from this light shield ROM (read-only memory), carry out in this first storage element this program code and with reference to this map datum to realize the function of this Global Positioning System (GPS).
2. Global Positioning System (GPS) according to claim 1, also include: one second storage element, be coupled to this control module, be used for storing a update information, this microprocessor is carried out this program code and is realized the function of this Global Positioning System (GPS) with reference to this program code, this map datum and this update information.
3. Global Positioning System (GPS) according to claim 2 is characterized in that, this second storage element is a flash memory.
4. the control integrated circuit of a Global Positioning System (GPS), it is characterized in that, this control integrated circuit is integrated and is comprised a microprocessor and a light shield ROM (read-only memory), this light shield ROM (read-only memory) is made according to a data light shield, this data light shield designs according to a map datum and a program code, this light shield ROM (read-only memory) stores this map datum and this program code, this control integrated circuit carry out this program code by microprocessor and with reference to this map datum to realize the function of this Global Positioning System (GPS).
5. control integrated circuit according to claim 4 is characterized in that, this light shield ROM (read-only memory) only need one deck light shield be variable this map datum by changing at least.
6. control integrated circuit according to claim 4 is characterized in that, this light shield ROM (read-only memory) and this microprocessor are made in the semiconductor chip simultaneously.
7. a method of making the control integrated circuit of Global Positioning System (GPS) is characterized in that, includes:
On the semiconductor substrate, make a microprocessor and a light shield ROM (read-only memory) of this control integrated circuit; And
Design at least one layer data light shield in order to define the data content of this light shield ROM (read-only memory);
Computing and the data content that read this light shield ROM (read-only memory) function that realize this Global Positioning System (GPS) of this control integrated circuit by this microprocessor wherein;
This step that designs this data light shield also includes: design this data light shield according to a map datum; This light shield ROM (read-only memory) after wherein finishing stores this map datum, and this microprocessor reads the function that this map datum is realized this Global Positioning System (GPS).
8. method according to claim 7 is characterized in that, also includes: change this data light shield to change the data content of this light shield ROM (read-only memory).
9. method according to claim 7 is characterized in that, the step that designs this data light shield also includes: also design this data light shield according to a program code; This light shield ROM (read-only memory) after wherein finishing stores this map datum and this program code, and this microprocessor is carried out this program code and read the function that this map datum is realized this Global Positioning System (GPS).
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| CN200610111419XA CN101126803B (en) | 2006-08-16 | 2006-08-16 | GPS and integrated circuit controlled thereby and the integrated circuit manufacture method |
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| CN101126803B true CN101126803B (en) | 2011-06-29 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1450338A (en) * | 2003-04-29 | 2003-10-22 | 清华大学 | Vehicle positioning navigation apparatus |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1450338A (en) * | 2003-04-29 | 2003-10-22 | 清华大学 | Vehicle positioning navigation apparatus |
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Effective date of registration: 20200403 Address after: No.1, Duhang 1st Road, Hsinchu City, Hsinchu Science Park, Taiwan, China Patentee after: MEDIATEK Inc. Address before: Hsinchu County, Taiwan, China Patentee before: MStar Semiconductor, Inc. |
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