CN1303541C - Memory operating method and device for disc recording player - Google Patents
Memory operating method and device for disc recording player Download PDFInfo
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- CN1303541C CN1303541C CNB031504345A CN03150434A CN1303541C CN 1303541 C CN1303541 C CN 1303541C CN B031504345 A CNB031504345 A CN B031504345A CN 03150434 A CN03150434 A CN 03150434A CN 1303541 C CN1303541 C CN 1303541C
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Abstract
The present invention relates to contents of a memory operating method and a device for an optical disc recording player. A memory in the optical disc recording player is particularly divided into a recording area and a playing area; data which is read from an optical disc is continuously stored in the playing area, and data which is transferred from a host machine is continuously stored in the recording area for lightening the continuous recording and playing burden of the optical disc recording player; the alternative transfer of a reading command and a writing command by the host machine without time delay is ensured, and the commands of the host machine can be responded in time. The memory is reasonably used according to the readjusting record of the reading command and the writing command and the size of a playing field, and the impact of the recording area and the playing area is prevented.
Description
Technical field
The invention relates to the memory operating method in the video disc recording player of recording played data and the content of device.
Background technology
General optical recording media promptly, the video disc recording playing device of recording played CD is CD (compactdisc), DVD CDs such as (digital versatile disc) is as recording medium, plays the data that are recorded in the above-mentioned CD or at the device of above-mentioned CD identifying recording layer.
The embodiment principle of above-mentioned DVD and CD there is no different greatly, utilizes the light quantity difference of Laser emission exactly, the principle the same with CD, the cognitive data of the data identification principle with 0 and 1.As variant, also just finer than the preservation width of cloth of CD data.
As shown in Figure 1, above-mentioned video disc recording playing device can link to each other with main frame.Here, main frame is a kind of PC, is the situation that the video disc recording playing device needs above-mentioned PC to support.
As shown in Figures 2 and 3, during above-mentioned host record/broadcast, read/write command is sent to the video disc recording playing device, above-mentioned video disc recording playing device is the read/write command according to above-mentioned main frame, play the data that write down on the CD and be sent to main frame or the data recording that sends from main frame to above-mentioned CD.
Fig. 2 is during from the dvd playback data, output to from main frame the video disc recording playing device general read command form one implement illustration,
Fig. 3 is when the CD identifying recording layer, outputs to an enforcement illustration of the write order form of video disc recording playing device from main frame,
At this moment above-mentioned read/write command comprises: specify the LBA (LBA (Logical Block Addressing)) of writing and show the transmission length of following size of data thereafter.
For example, when broadcast is recorded in data on the CD, above-mentioned main frame generates the read command of image pattern 2, output to the video disc recording playing device, above-mentioned video disc recording playing device, read the data that are equivalent to transmit length according to the LBA in the CD of above-mentioned read command appointment, and be stored into the reservoir in the optical record-play device.Above-mentioned then optical record-play device is read and is kept at the data in the reservoir and is retransmitted to main frame.
In addition, need record optical disc data if produce, main frame is sent to the video disc recording playing device simultaneously to write order as shown in Figure 3.Above-mentioned optical disc recording apparatus is saved in the data that transmit from main frame after the storer of distribution again, is equivalent to transmit the data of length from target record position (LBA) record of the CD of above-mentioned write order appointment.
At this moment, above-mentioned optical disc recording apparatus when transmitting read/write command in main frame, need reduce time delay to greatest extent, and respond this order.
Minimum for time delay is dropped to, in a single day import read command during broadcast, not only read the address information of present read command appointment, also read next address in advance and be saved in the reservoir.If when importing next read command then, confirm that earlier requested read command data and the data that read in advance are whether consistent after, the data in the storer are sent to main frame.Such process as long as read command continues continuously, just repeatedly always.Because have than higher probability, the required data of main frame are exactly the next one of the former data of wanting.
But sometimes, the read and write order also can alternately transmit from main frame.For example, suppose read/write command by read (0) order/read (1) order/read (2) order/... / read (N) to order/write (0)/read (N+1) order to transmit.
When (N) order is read in execution, be read and be stored into the later information of reading in the storer (N+1) in advance, delete from storer when writing (0) order in execution.Because the data that transmit simultaneously with write order (0) cover record from the reference position of reservoir, so the data except that the data that transmit and be stored in storer with write order simultaneously, that particularly reads in advance and store reads (N+1) information and can lose.
And, after ordering, above-mentioned writing (0) read (N+1) order as receiving, and read (N+1) order appointed positions from CD and begin reading of data again, and after the beginning covering of storer is preserved, be sent to main frame.
Therefore, transmit read command or do not transmit write order as continuing, the read and write order alternately produces; Promptly produce point of discontinuity in the order, the speed of optical record-play device can slow down.Just receive when reading or writing order, answer the time of order and can incur loss through delay, thereby reduce the performance of video disc recording playing device from main frame.
Summary of the invention
The present invention is in order to solve the above problems.The objective of the invention is storer be divided into play with and record be used for operation, the method for operating and the device of the video disc recording player memory of raising video disc recording playing device performance is provided.
In order to achieve the above object and the characteristics of video disc recording playing device memory operating method of invention are as follows;
A kind of memory operating method of video disc recording player: the read command that transmits according to main frame stores the data of reading from CD or receives the storage data that transmits simultaneously from main frame and write order; Above-mentioned storer is divided into posting field and play area, the data of reading from CD are stored into above-mentioned play area continuously, the data that main frame is transmitted are stored into posting field continuously, above-mentioned posting field and play area are to distinguish by record/play area frontier point, comprise the step according to the size of convertible record of read/write command and play area; And the step of the record of the above-mentioned storer of conversion/play area frontier point.
Above-mentioned posting field and play area are evenly cut apart in the early stage the time.
In above-mentioned posting field and play area, set minimum border.
A kind of storage operation device of ordering and possess the optical record-play device of the play-/ record function of carrying out data from the transmission of main frame reception read/write: data storage area member record zone and play area, above-mentioned posting field and play area are the storeies of distinguishing by record/play area frontier point, also comprise memory management portion, according to above-mentioned read/write command production storage address and output on the above-mentioned storer; Microprocessor, the record/play area frontier point of the above-mentioned storer of energy conversion; Main frame is exported or be sent to after the sense data to control part to the data that CD is read by storer in storer.
The posting field of above-mentioned storer and play area initial stage are evenly cut apart.
In the posting field of above-mentioned storer and play area, set minimum border.
Also comprise in the above-mentioned control part: the calculating part that calculates according to read/write command, and according to result of calculation conversion record/play area frontier point.
Above-mentioned calculating part calculates the transmission length that is included in the above-mentioned read write command.
According to the control of above-mentioned control part, in the data of the continuous storage host transmission of the posting field of above-mentioned storer, and the play area of above-mentioned storer is stored the data of reading from CD continuously.
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Purpose of the present invention, characteristics, advantage can describe in detail for example by accompanying drawing, can be more clear.
As mentioned above, as use the memory operating method and the device of video disc recording player of the present invention, the storer of video disc recording player is divided into record and plays and operate, can alleviate the burden of video disc recording player.Even if the order that read/write command also can be replied main frame with not mistaking alternately takes place.And in record and play area, set minimum border, more stably operational store.
Particularly adjust the size of above-mentioned record and play area again according to read/write command, operational store more suitably, and avoid writing down conflict with play area.
By above explanation,, can in the scope that does not break away from the technology of the present invention thought, can carry out numerous variations and correction for those skilled in the art.So the definite of scope of the present invention can not limit in the following embodiments, but decides according to claims restricted portion.
Description of drawings
Fig. 1 is the synoptic diagram of data transfer procedure between video disc recording playing device and the main frame.
Fig. 2 is the synoptic diagram of the embodiment of a read command form.
Fig. 3 is the synoptic diagram of the embodiment of a write order form.
Fig. 4 is about in the optical record-play device of the present invention, with the structural drawing of storage operation relevant portion.
Fig. 5 a is about storer of the present invention to 5c, is divided into posting field and play area, the synoptic diagram that record/broadcast conversion switching point changes.
Embodiment
Below describe technical scheme of the present invention in detail by drawings and Examples.
Fig. 4 is about the structural drawing of the relevant portion of storage operation in the video disc recording playing device of indication of the present invention.
As shown in Figure 4, comprise microprocessor 401 in the video disc recording playing device, memory management portion 402, calculating part 403 and storer 404.
Above-mentioned microprocessor 401 outputs to memory management portion 402 to the read/write command that main frame transmits, and according to the information of calculating part 403, the record of control store 404/play area frontier point.
Above-mentioned memory management portion 402 stores the data of main frame transmission according to the read/write command of microprocessor 401 outputs, or produces the memory read/write address of storer 404 and be sent to storer 404.
Above-mentioned memory management portion 402 controls calculating part 403 according to read/write command, and replying of corresponding read/write command is sent to main frame.
Above-mentioned storer 404 outputs to memory management portion 402 to the data storing by 402 inputs of memory management portion to the address of memory management portion 402 appointments or the data that store.
Above-mentioned storer 404 can be made up of mobile memory.
The application of above-mentioned storer 404 is more extensive, is not confined to the foregoing description.
Shown in Fig. 5 a, above-mentioned storer 404 is divided into record to single memory area and plays and use; Even read/write command alternately, also can be deposited play area to the data of dvd playback, need be recorded in optical disc data and deposit posting field.
At this moment, the field of the record at initial stage and broadcast usefulness is evenly cut apart.Above-mentioned record/play area is to be recorded/differentiation of play area frontier point, and above-mentioned record/play area frontier point is controlled by microprocessor 401.
If above-mentioned record/play area frontier point conversion, this information outputs to memory management portion 402.
For the above-mentioned storer 404 of stable operation, can preestablish the border of record and play area.
For example, minimum border is the minimum of host requests, and can set the 2-3 piece is minimum border.
Above-mentioned record/play area is to change size according to record/play area frontier point, and above-mentioned record/play area frontier point can only move to minimum border.
Above-mentioned calculating part 403 is to carry out by the control of memory management portion 402 to calculate, and the result is outputed to microprocessor 401.
For example, above-mentioned calculating part 403 can possess two calculated amount-broadcast calculated amount and record calculated amount, and calculates according to above-mentioned read/write command.The added value of at this moment above-mentioned play-/ record calculated amount can be set at the transmission length value that is equivalent in the above-mentioned read/write command.
The transmission length here is the length that expression is included in the data that will play or write down in each read/write command, also can calculate the quantity of read write command.Broadcast and the record calculated amount result of above-mentioned microprocessor 401 by comparing calculating part 403, the record of conversion storer 404/play area frontier point.
For example, if the difference of playing calculated amount and record calculated amount more than the critical value of having set or play and calculate or the output of record calculated amount is being set more than the critical value, moves to record/play area frontier point and plays or posting field.
If because of the output of aforementioned calculation portion 403, and need the data of the data of broadcast more than the need record, above-mentioned microprocessor 401 moves to the posting field direction to record/play area frontier point.At this moment shown in size of Fig. 5 a of posting field, reduce the size of posting field, increase the size of play area.
On the contrary, need the data of the data of record more than the need broadcast, above-mentioned record/play area frontier point moves to the play area direction.At this moment shown in Fig. 5 c, the size of posting field can increase, and the size of play area can reduce.
When even if the read and write order replaces,, be stored in order in the play area in the storer 404 according to the data that read command is read from CD.And with the data that record order is sent to from main frame simultaneously, be stored in posting field in order.At this moment storage address is to produce from memory management portion 402.
The point of discontinuity of read/write command just takes place at last, and it is excessive can not write since the initial stage, and stores the next address in the respective regions continuously into.
Therefore, even if the slack-off phenomenon of speed that the video disc recording playing device also can not take place read/write command alternately takes place.
As mentioned above, as use the memory operating method and the device of video disc recording player of the present invention, the storer of video disc recording player is divided into record and plays and operate, can alleviate the burden of video disc recording player.Even if the order that read/write command also can be replied main frame with not mistaking alternately takes place.And in record and broadcast field, set minimum border, more stably operational store.
Particularly adjust the size of above-mentioned record and play area again according to read/write command, operational store more suitably, and avoid writing down conflict with play area.
By above explanation,, can in the scope that does not break away from the technology of the present invention thought, can carry out numerous variations and correction for those skilled in the art.So the definite of scope of the present invention can not be confined to embodiment, and should decide according to claims restricted portion.
Claims (9)
1. the memory operating method of a video disc recording player:
The read command that transmits according to main frame stores the data of reading from CD or receives the storage data that transmits simultaneously from main frame and write order;
Above-mentioned storer is divided into posting field and play area, the data of reading from CD are stored into above-mentioned play area continuously, the data that main frame is transmitted are stored into posting field continuously, and above-mentioned posting field and play area are to distinguish by record/play area frontier point
It is characterized in that,
Comprise step according to the size of convertible record of read/write command and play area; And
The step of the record of the above-mentioned storer of conversion/play area frontier point.
2. the memory operating method of video disc recording player as claimed in claim 1 is characterized in that,
Above-mentioned posting field and play area are evenly cut apart in the early stage the time.
3. the memory operating method of video disc recording player as claimed in claim 1 is characterized in that,
In above-mentioned posting field and play area, set minimum border.
4. one kind receives the storage operation device that read/write transmits order and possesses the optical record-play device of the play-/ record function of carrying out data from main frame:
Data storage area member record zone and play area, above-mentioned posting field and play area are the storeies of distinguishing by record/play area frontier point,
It is characterized in that, also comprise
Memory management portion is according to above-mentioned read/write command production storage address and output on the above-mentioned storer;
Microprocessor, the record/play area frontier point of the above-mentioned storer of energy conversion;
Main frame is exported or be sent to after the sense data to control part to the data that CD is read by storer in storer.
5. as claimed in claim 4ly receive the storage operation device that read/write transmits order and possesses the optical record-play device of the play-/ record function of carrying out data, it is characterized in that from main frame,
The posting field of above-mentioned storer and play area initial stage are evenly cut apart.
6. as claimed in claim 4ly receive the storage operation device that read/write transmits order and possesses the optical record-play device of the play-/ record function of carrying out data, it is characterized in that from main frame,
In the posting field of above-mentioned storer and play area, set minimum border.
7. as claimed in claim 4ly receive the storage operation device that read/write transmits order and possesses the optical record-play device of the play-/ record function of carrying out data, it is characterized in that from main frame,
Also comprise in the above-mentioned control part:
The calculating part that calculates according to read/write command, and according to result of calculation conversion record/play area frontier point.
8. as claimed in claim 7ly receive the storage operation device that read/write transmits order and possesses the optical record-play device of the play-/ record function of carrying out data, it is characterized in that from main frame,
Above-mentioned calculating part calculates the transmission length that is included in the above-mentioned read write command.
9. as claimed in claim 4ly receive the storage operation device that read/write transmits order and possesses the optical record-play device of the play-/ record function of carrying out data, it is characterized in that from main frame,
According to the control of above-mentioned control part, in the data of the continuous storage host transmission of the posting field of above-mentioned storer, and the play area of above-mentioned storer is stored the data of reading from CD continuously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031504345A CN1303541C (en) | 2003-08-20 | 2003-08-20 | Memory operating method and device for disc recording player |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031504345A CN1303541C (en) | 2003-08-20 | 2003-08-20 | Memory operating method and device for disc recording player |
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| Publication Number | Publication Date |
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| CN1585016A CN1585016A (en) | 2005-02-23 |
| CN1303541C true CN1303541C (en) | 2007-03-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB031504345A Expired - Fee Related CN1303541C (en) | 2003-08-20 | 2003-08-20 | Memory operating method and device for disc recording player |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1100216A (en) * | 1993-04-22 | 1995-03-15 | 索尼公司 | Buffer memory self-diagnosis method for information signal processing apparatus |
| US5996023A (en) * | 1996-10-31 | 1999-11-30 | Sensormatic Electronics Corporation | Efficient pre-alarm buffer management in intelligent video information management system |
| JP2002259152A (en) * | 2000-12-26 | 2002-09-13 | Matsushita Electric Ind Co Ltd | Flash memory rewriting method |
| CN1401120A (en) * | 2000-11-06 | 2003-03-05 | 索尼公司 | Information processor, information processing methodm medium recording information processing method |
-
2003
- 2003-08-20 CN CNB031504345A patent/CN1303541C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1100216A (en) * | 1993-04-22 | 1995-03-15 | 索尼公司 | Buffer memory self-diagnosis method for information signal processing apparatus |
| US5996023A (en) * | 1996-10-31 | 1999-11-30 | Sensormatic Electronics Corporation | Efficient pre-alarm buffer management in intelligent video information management system |
| CN1401120A (en) * | 2000-11-06 | 2003-03-05 | 索尼公司 | Information processor, information processing methodm medium recording information processing method |
| JP2002259152A (en) * | 2000-12-26 | 2002-09-13 | Matsushita Electric Ind Co Ltd | Flash memory rewriting method |
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| CN1585016A (en) | 2005-02-23 |
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Granted publication date: 20070307 Termination date: 20110820 |