TW582167B - Compression method of icon in digital camera - Google Patents

Abstract

A compression method of icon in digital camera is disclosed, which applies the rapid digital signal processing capability of digital camera, and applies a decompression technology to encode the icon and store it into a register, and decodes the compressed icon for displaying on the liquid crystal display. Thus, the memory required by the icon can be reduced, so as to save the cost of the flash memory.

Description

582167

Month Month-Month is a method for compressing surface graphics (lcOn), which refers to a method for compressing digital camera interface graphics. [Background of the invention], f = machine, a digital image input processing and image memory equipment: and two traditional cameras, 'digital camera contains a large number of digital image processing, the common digital image signal processing has automatic exposure = 〇 = P〇sure), autofocus (AutoFocus) 'automatic white balance), \ e Balance) and image compression (Image Compression) all of the above functions must have a considerable amount of digital signal processing capabilities. Yue Xian? ΓΪ The convenience of the user, most digital cameras also provide liquids;; :: Γ The user sets and understands the current state of the camera ... Set the hand lock Γ: Exposure value '& large multiples, or delete when editing images, Suo Si Temple. In order to make these man-machines choose to be public, # Α mostly uses ΪMinyi 4, ^ > to make the face more humane. These status displays need not be: The large amount of internal system memory of the camera makes Li Xuyi's production + + increase and affect the cost of the camera. Therefore: Charge: the memory square "large square of the compressed square corner of the memory; digital camera interface diagram [Overview and purpose of the invention ] ',', An issue of concern. The purpose of the present invention is to reduce the dot matrix format "and then store it in the internal system of the digital camera.

Page 5 582167 Corrections

SS_i9l28381 V. Description of the invention (2) After the surface graphics are encoded, they are stored in a light six σσ one percent gluteal state, and then the compressed eight are decoded to be displayed on the liquid crystal display. This can lower the memory of the three-sided graphics. To save the cost of flash memory. -η graphics required shield $, first _ @ ^ Separate the interface graphics into a first primary color ¥ a primary color, a third primary color, and a first: first primary color, second primary color, third primary color, and fourth primary color storage: to the knife In the second step, an open encoding process is sent through the -digital signal processor and the database is stored in a temporary register; then: the η color, the second primary color, the third primary color, and the fourth primary color are reorganized. ; The original header completes a compressed file; finally saves the compressed file to the tenant = one, and completes the compression process. Special register. The detailed content and technology of the present invention are described below with reference to the drawings: [Detailed description of the invention] FIG. 1 is a system architecture diagram of a method for compressing a digital camera interface graphic according to the present invention. After the image unit 1 00 is powered on and enters the operating mode, it can be switched by the menu key to enter the graphical interface mode to operate the camera. The system controller in the camera 1 1 〇 receives the user's finger buttons 丨 2 such as up , Down, enter, etc., according to the compressed interface graphic position stored in the system memory 120 in advance, sequentially retrieve and transfer to the digital signal processor 130, and then use the interface graphic decompression method to decompress the graphic and then The restored interface graphics are sequentially transferred to the system controller 1 0. The system controller 1 0 is connected to the liquid crystal display 1 40 and the memory buffer 1 50, and the digital signal processor 1 3 0 passes the Restore interface graphics are set according to the graphical interface

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Correction ___ The position of the meter is placed in the memory buffer 150, and then the LCD monitor 140 and the system controller 1 110 are driven, so that the interface graphics can be displayed on the LCD monitor 140 according to the design. The LCD display 140 can also be replaced by a video camera, and the system controller 11 provides an external memory 16 and a computer interface 17 ′ for connecting the stored data with an external expansion device. Because the interface graphics (I c 0 n) usually have the same and continuous information components, such as a large block of the same red or blue, or a long line, this lean arrangement method causes the interface graphics to have extremely low frequencies. Components, and only have high-frequency response at the intersection of color changes, that is, the data values in the block are the same 'and at the intersection of color changes, the same and continuous data is interrupted' but even so, The adjacent data is the same and continuous, so a large amount of the same data forms redundant information and occupies a large amount of memory; the low-frequency information and linear characteristics of this interface graphics can be converted by effective and reversible encoding and decoding technology. This redundant information is simplified, such as: Differential Pulse Code Modulation (Differentia 1 PC M) technology, variable length coding (R un L ength E ncoding 'R l E) technology, Huffman coding (H uffman Coding) technology, etc. 'to reduce the space required by the system memory in the digital camera to achieve the purpose of reducing costs. The interface graphics mentioned in the present invention are mainly based on a bitmapped graphics file format. A series of repeated data bits are compressed and stored by using RLE technology. No. 2 is a schematic diagram of an interface graphic (Icon) of a method for compressing an interface graphic of a digital camera according to the present invention, wherein the interface graphic (IC0n) 2 0 0 represents an EV adjustment function, and the interface graphic

582167 ^ 89128381 V. Description of the Invention (4) (Icon) 2 0 0 is a slotted format. The present invention takes a -r RLEM technology as an example f length f, code (R: 'called 讣 —.' ⑽; repeating data is μ Γ linearity 'RU is A kind of suitable for data bit; ^ Basic-a kind of algorithm ", this kind of algorithm is usually. For example, original data :: multiple repetitive images, voice or video. Using RLE encoding method, 〇F 〇F 〇F ... 〇F (There are 20 0F in total, so it is 14). In this way, it is 14F (20 hex hexadecimal representation after RLE encoding. Only twenty bytes of data are used first. After saving a lot of space and The time can be lengthened when stored by the company. The code is a picture book: the number of digits can be used. It is widely used in various fields. For coding technology, a simple MP- The same information in the column can be used; the two Λν values V, that is, < R'v > ^ color / ming / 纟: 彳 卜 # t can accept the longest path 255, = 55 in the 8-bit system. First digit The signal processor receives the system code = f code (Golay code), and then accumulates the same Gray number fixed record "redundant information length m R, and then pastes the value to v Alignment camera: graphics ... Because the data is arranged in a multi-dimensional two-dimensional array, it is necessary to first cut the two-dimensional breeding material 3 0 0 into 3 T, so: reduce the amount of graphic data effectively to achieve a reasonable [shrink The more data there is, the slower the frequency changes.

3 = RLE encoding 32 0, because several identical data are only corrected by 2 bits

End number 891283S1 V. Description of the invention (5) The larger the compression ratio is, the larger the size, the larger the size, the greater the size and the the size of the interface graphics, and the lower the cost. Figure 4 shows the digital phase translation of the present invention. M m Min π tangential phase compression method of the private interface graphics. Meaningful length decoding. Decompression of graphics. Compression of totality. # 思 图 ， Redundant length coding It is a reversible technology: 'That is, the redundant length decoding technology is the reversible trans-decompression of the encoding technology to obtain the original interface graphics.' Sound 4. The code is over < R 'v > CODE 3 1 0 first Remove the header long two, and then do not take out the redundant information length value r and the information value v. The digital signal processors U 琮, 宝 # y, and ΛΑ _ htwd U ’s different capabilities will be arranged. The corresponding V value of the R number is also; ^ ,, Shi—, Jin; s ^ ^ ^. The original code is a complete string of interface graphics 歹 ^, .Λ code, so when the system After the controller 丨 10 obtains the complete continuous code, it needs to cut the treasure according to the original size of the interface graphic 2 0 丨 Shi Xiyi ... The size of the wood is cut into a multi-dimensional two-dimensional array 3 0 0 and sent to the LCD display * 1 140 or video camera Buffer memory, and finally start the LCD display 140 or video to display the interface graphics 2000. The following describes the specific compression coding process of the present invention. Among them, Figure 5-7 is the compression coding muscle map of the digital camera interface graphics compression method of Ming Ming, where C2, C2, and C3 are the 5th to 7th connections. For the nodes of the graph, please refer to Figure 5. First, turn in the interface graphics (step 500), and determine whether it is a bitmap. (Step 510), if not, further determine whether it is-the first primary color / the second primary color / the third primary color / the fourth primary color format (such as C / M / Y / K format)? (Step 5 2 0), if it is not, it is not a graphic format adopted by the present invention, and an error message is displayed (step 5 3 0); if it is a one-bit map, it is converted by color space (step 54) To separate C / M / Y / K (step 5 50), and store the C / M / Y / K data in the temporary register (step 56),

Page 9 582167 Shame Zheng No. 8912WR1 V. Description of Invention (6) | Then proceed to the next processing section. Please refer to Figure 6 below. The system sends an instruction to ^ ^ 〇〇), and then waits for a response from the DSP (step 6 丨 〇), and then 2 (step 6 2 0). If the time is exceeded, an error is displayed. ; Second (= I is normal, judging whether dsp is normal? (Step 64), if Dsp is suspended, start the encoding program (Step 6 50), and store ^ encoding (t / c) for c / m respectively. Step 66)) and RLE encoding for Υ / Κ (step 6 6 2), and store the encoded C / M data in the register (the γ / κ data after step 67 ^ | into the register) (Step 6 72). And store it as a code, and then refer to Figure 7, after completing steps 6 7 0, 672, then | | 2 Γ step 70 0), and determine whether the editing is completed: = 10), until The DSP responds to the encoding completion. After the encoding is completed, step 72 0), and data reorganization (step and fill in a "head (step 74 0), and save the file to — | step 750) to complete the digital camera interface graphics The compression process .... (Step ... The following describes the decompression decoding process that is specifically implemented in the present invention. Figures 8-9 are the digital camera interface graphics of the present invention. Shrinking decoding flowchart of the shrinking method, where D1 is the node connected to Figures 8 ~ 9, as shown in Figure 8; first reads from the register (step 80 ° monthly examination and removal of the header) (Step 81 〇), and extract the C / M / Y / Kf material (step 82 key ^ away from the C / M / Y / K data (step 8 3 0), and then reorganize the data (step 84 0 / save the data to Register (step 85), at this time the system sends an instruction to the DSP (step, 8 60), and then waits for the response of Dsp (step ^ step ... if the time exceeds-display error ^ page 582167 case No. 89128381_ 年月 __g_ Amendment 5. Invention Description (7), and end the action to preserve the integrity of the data. If the DSP response time does not exceed, then further judge whether the DSP is normal? (Step 9 0 0), if If the DSP display is abnormal, an error message is displayed (step 9 1 0), otherwise the decoding process is started (step 9 2 0), and RLE decoding is performed for C / M (step 9 3 0) and RLE is performed for γ / κ. Decode (step 9 32), and store the decoded C / M data in a temporary register (step 9400), and store the decoded Υ / Κ data To the register (step 942), at this time, a display order is triggered (step 950), and the interface graphic is displayed through the liquid crystal display (step 96). However, the present invention is disclosed as the above-mentioned preferred embodiment, but: :: Determine the present invention, and those who are familiar with this art, without departing from the spirit and scope of 2, can make 1 μ ^ wee $ ^ 卞 δ Wuzhi changes and retouching, so the protection of the present invention The attached application patent shall prevail.

582167 Case No. 89128381 Revised diagrams Brief description The first figure is the system architecture diagram of the digital camera interface graphics compression method of the present invention; the second figure is the interface graphics of the digital camera interface graphics compression method of the present invention (I con) schematic diagram; FIG. 3 is a schematic diagram of a variable-length-encoded graphics compression method of a digital camera interface graphic compression method of the present invention; FIG. 4 is a variable-length decoded graphics decompression method of a digital camera interface graphic compression method of the present invention Figures 5 to 7 are flowcharts of compression coding of the digital camera interface graphics compression method of the present invention; and Figures 8 to 9 are decompression and decoding flowcharts of the digital camera interface graphics compression method of the present invention. [Symbol description] 100 digital camera acquisition unit 110 system controller 112 finger buttons 12 0 system memory 130 digital signal processor 140 liquid crystal display 150 memory buffer 160 external memory 170 computer interface 2 0 0 interface graphics ( Icon) 3 0 0 2D data

Page 12 582167 Case No. 89128381_Year Month and Day Modification Schematic description 310 One-dimensional data string 320 RLE encoding 400 > Divided header length 410 RLE decoding step 500 Input interface graphics step 510 Determine whether it is a one-bit map ? Step 520 is a C / M / Y / K format? Step 530 Display error message Step 540 Color space conversion Step 550 Separate C / M / Y / K Step 560 Store C / M / Y / K data to register Step 600 Send an instruction to DSP Step 610 Wait for the DSP Response step 620 Is time exceeded Step 630 Display error message Step 640 Is the DSP normal? Step 650 Open the encoding program Step 660 RLE encoding for C / M Step 662 RL encoding for Y / K E Step 670 Store the encoded data into the register Step 672 Store the encoded C data into the register Step 700: Wait for the response from the DSP. Step 710: Whether the encoding is completed. Step 720: Pause the DSP.

Page 13 582167 Case No. 89128381 Revised diagram of the month and year Simple explanation Step 7 3 0 Step 7 4 0 Step 7 5 0 Step 8 0 0 Step 8 1 0 Step 8 2 0 Step 8 3 0 Step 8 4 0 Step 8 5 0 Step 8 6 0 Step 8 7 ◦ Step 8 8 0 Step 8 9 0 Step 9 0 0 Step 9 1 0 Step 9 2 0 Step 9 3 0 Step 9 3 2 Step 9 4 0 Step 9 4 2 Step 9 5 0 Step 9 6 0

Reorganize the data, fill in a header, store the file in a register, read the file from the register, remove the header, extract the C / M / Y / K data, separate the C / M / Y / K data, and perform the data Reorganize the stored data into the register and issue a command to the DSP. Wait for the response of the DSP to exceed the time. Is the error message displayed? Is the DSP normal? Display error message. Start decoding program. RLE decoding for C / M. RLE decoding for Y / K. Store decoded C / M data to register. Store decoded Y / K data to register. Trigger display command display. Interface graphics

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Claims (1)

582167 _Case No. 89128381_ Modification of Year of the Year_ 6. Application for Patent Scope 1. A method for compressing a digital camera interface graphic, the method includes at least the following steps: determining that the interface graphic is a graphic file format of a one-bit map; The interface graphic is separated into a first primary color, a second primary color, a third primary color, and a fourth primary color; the first primary color, the second primary color, the third primary color, and the fourth primary color are stored in a register, respectively. Waiting for a digital signal processor to send an encoding-enable program signal; encoding the first primary color, the second primary color, the third primary color, and the fourth primary color; storing the encoded first primary color, the second primary color, The third primary color and the fourth primary color data are stored in the register; waiting for the digital signal processor to send an encoding program completion signal; the encoded first primary color, the second primary color, the third primary color, and the fourth The original color data is reorganized, and a header is filled in to complete a compressed file; and the compressed file is stored in the temporary register to complete the compression process. 2. The compression method of the digital camera interface graphics described in item 1 of the scope of the patent application, wherein the encoding technology may be variable length encoding (R u η Length Encoding; RLE) 0 3. The digital camera interface graphics compression method described above, wherein the encoding technology may be Differential Pulse Code Modulation (Differential Pulse Code Modulation; Differential PCM) ° 4. The digital camera interface graphics compression described in the first patent application scope Page 15 582167 Case No. 89128381 _ Amendment VI. Method of applying for patent scope, where the coding technology can be Huffman coding (H uffma η Coding) 0 5 as the digital camera described in item 1 of the scope of patent application A method for compressing an interface graphic, wherein the step of separating the interface graphic into a first primary color, a second primary color, a third primary color, and a fourth primary color further includes a color space conversion step. 6. The method for compressing a digital camera interface graphic as described in item 1 of the scope of the patent application, wherein before performing the steps of rearranging the encoded data of the first primary color, the second primary color, a third primary color, and a fourth primary color The method further includes suspending the digital signal processor. 7. The method for compressing a digital camera interface graphic as described in item 1 of the scope of patent application, further comprising the step of cutting and converting the two-dimensional data of the interface graphic into a one-dimensional data string. 8. The method for compressing a digital camera interface graphic as described in item 1 of the scope of patent application, wherein the interface graphic is in a one-point matrix format. Page 16