Teac TFT IDTV Service Manual
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Teac TFT IDTV Service Manual

Teac TFT IDTV Service Manual

22” tft idtv
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TEAC 22" TFT IDTV
SERVICE MANUAL

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  • Page 1 TEAC 22” TFT IDTV SERVICE MANUAL...

  • Page 2: Table Of Contents

    TABLE OF CONTENTS INTRODUCTION ............................1 TUNER..............................1 IF PART (TDA988X) ..........................1 MULTI STANDARD SOUND PROCESSOR .................... 1 AUDIO AMPLIFIER STAGE WITH AN7522..................... 2 POWER ..............................2 MICROCONTROLLER SDA55XX......................2 7.1. General Features ..........................2 7.2. External Crystal and Programmable Clock Speed ................2 7.3.
  • Page 3 Features ..........................14 11.11.2. Pinning ............................ 14 11.11.3. 11.12. TDA1308 ............................15 General Description ....................... 15 11.12.1. Features ..........................15 11.12.2. Pinning ............................ 15 11.12.3. 11.13. AN7522N ............................15 General description ....................... 15 11.13.1. Pin Descriptions ........................15 11.13.2. 11.14. PI5V330............................
  • Page 4 Features ..........................35 12.2.2. 12.3. 74HCU04............................36 General Description ....................... 36 12.3.1. Pin Description ........................36 12.3.2. 12.4. TSH22 ............................. 37 General Description ....................... 37 12.4.1. Pin Connections ........................37 12.4.2. 12.5. CS4334............................37 General Description ....................... 37 12.5.1. Features ..........................37 12.5.2.

  • Page 5: Introduction

    It is designed to deliver digital quality pictures without the need of a separate digital terrestrial receiver. TFT IDTV is a progressive scan flicker free colour television with PC input, driving an WXGA (1280*720) panel with 16:9 aspect ratio. The chassis is capable of operation in PAL, SECAM, NTSC (playback) colour standards and multiple transmission standards as B/G, D/K, I/I’, and L/L´.

  • Page 6: Audio Amplifier Stage With An7522

    5. AUDIO AMPLIFIER STAGE WITH AN7522 The AN7522 is an audio class-AB amplifier assembled in SIL-12 Pin Plastic Package specially designed for sound cards application. Using this IC chassis operates as a stereo TV set. AN7522 has stand-by feature for low stand-by power consumption and mute feature for pop noise free opening and closing the TV set.

  • Page 7: Rom Characters

    7.6. ROM Characters • Shadowing • Contrast Reduction • Pixel by Pixel Shiftable Cursor With up to 4 Different Colours • Support of Progressive Scan and 100 Hz. • 3 X 4Bits RGB-DACs On-Chip • Free Programmable Pixel Clock from 10 MHz to 32MHz •...

  • Page 8: Ic Descriptions (For Analog)

    11. IC DESCRIPTIONS (FOR ANALOG) LM1117 PI5V330 LM2576 GM6015 LM317T SAA3010T TFMS5360 AD9883A ST24LC21 MC141585 SST37VF040 MC34063 TEA5114A MSP3410G TEA6415 DS90C385 VPC3230D 4053B SDA55XX 24C16 TDA9885/86 74LX1G86STR TDA1308T IRF7314 AN7522N 11.1. LM1117 11.1.1. General Description The LM1117 is a series of low dropout voltage regulators with a dropout of 1.2V at 800mA of load current. It has the same pin-out as National Semiconductor’s industry standard LM317.

  • Page 9: Lm2576

    11.2. LM2576 11.2.1. General Description The LM2576 series of regulators are monolithic integrated circuits ideally suited for easy and convenient design of a step–down switching regulator (buck converter). All circuits of this series are capable of driving a 3.0 A load with excellent line and load regulation. These devices are available in fixed output voltages of 3.3 V, 5.0 V, 12 V, 15 V, and an adjustable output version.

  • Page 10: Lm317T

    11.3. LM317T 11.3.1. Description The LM317T is an adjustable 3 terminal positive voltage regulator capable of supplying in excess of 1.5 amps over an output range of 1.25 to 37 volts. This voltage regulator is exceptionally easy to use and requires only two external resistors to set the output voltage.

  • Page 11: St24Lc21

    11.5. ST24LC21 11.5.1. Description The ST24LC21 is a 1K bit electrically erasable programmable memory (EEPROM), organized by 8 bits. This device can operate in two modes: Transmit Only mode and I C bidirectional mode. When powered, the device is in Transmit Only mode with EEPROM data clocked out from the rising edge of the signal applied on VCLK.

  • Page 12: Sst37Vf040

    11.6. SST37VF040 11.6.1. Description The SST37VF512/010/020/040 devices are 64K x8 / 128Kx8 / 256K x8 / 512K x8 CMOS, Many-Time Programmable (MTP), low cost flash, manufactured with SST’s proprietary, high performance CMOS Super Flash technology. The split-gate cell design and thick oxide tunneling injector attain better reliability and manufacturability compared with alternate approaches.

  • Page 13: Tea5114A

    11.7. TEA5114A 11.7.1. General description This integrated circuit provides RGB switching allowing connections between peri TV plug, internal RGB generator and video processor in a TV set. The input signal black level is tied to the same reference voltage on each input in order to have no differential voltage when switching two RGB generators.

  • Page 14: Tea6415

    11.8. TEA6415 11.8.1. General description The main function of the IC is to switch 8 video input sources on 6 outputs. Each output can be switched on only one of each input. On each input an alignment of the lowest level of the signal is made (bottom of synch.

  • Page 15: Vpc3230D

    11.9. VPC3230D 11.9.1. General Description The VPC 323xD is a high-quality, single-chip video front-end, which is targeted for 4:3 and 16:9, 50/60-Hz and 100/120 Hz TV sets. It can be combined with other members of the DIGIT3000 IC family (such as DDP 331x) and/or it can be used with 3rd-party products.
  • Page 16 SUPPLYD Ground, LLC Circuitry Picture Bus Luma (MSB) Picture Bus Luma Picture Bus Luma Picture Bus Luma SUPPLYD Ground, Luma Output Circuitry SUPPLYD Supply Voltage, Luma Output Circuitry SUPY Picture Bus Luma Picture Bus Luma Picture Bus Luma Picture Bus Luma (LSB) Picture Bus Chroma (MSB) Picture Bus Chroma Picture Bus Chroma...

  • Page 17: Sda55Xx (Sda5550)

    11.10. SDA55XX (SDA5550) 11.10.1. General description The SDA55XX is a single chip teletext decoder for decoding World System Teletext data as well as Video Programming System (VPS), Program Delivery Control (PDC), and Wide Screen Signalling (WSS) data used for PAL plus transmissions (Line 23). The device also supports Closed caption acquisition and decoding.

  • Page 18: Tda9885/86

    11.11. TDA9885/86 11.11.1. General description The TDA9885 is an alignment-free single standard (without positive modulation) vision and sound IF signal PLL. The TDA9886 is an alignment-free multistandard (PAL, SECAM and NTSC) vision and sound IF signal PLL demodulator for positive and negative modulation including sound AM and FM processing. Both devices can be used for TV, VTR, PC and set-top box applications.

  • Page 19: Tda1308

    11.12. TDA1308 11.12.1. General Description The TDA1308 is an integrated class AB stereo headphone driver contained in an SO8 or a DIP8 plastic package. The device is fabricated in a 1 mm CMOS process and has been primarily developed for portable digital audio applications.

  • Page 20: Pi5V330

    11.14. PI5V330 11.14.1. General description Pericom Semiconductor’s PI5V series of mixed signal video circuits are produced in the Company’s advanced CMOS low-power technology, achieving industry leading performance. The PI5V330 is a true bidirectional Quad 2-channel multiplexer/demultiplexer that is recommended for both RGB and composite video switching applications.

  • Page 21: Gm6015

    11.15. GM6015 11.15.1. General description The Genesis Microchip 6015RD1 LCD TV reference board is a complete display processor for LCD, PDP and LCOS based televisions. The reference board demonstrates the processing capabilities of the Genesis Microchip gm6015 television controller IC. The gm6015 IC is a full-featured, dual-channel video processor with Genesis industry leading Crystal Ciema Plus video scan conversion.

  • Page 22: Saa3010T

    11.16. SAA3010T 11.16.1. Description The SAA3010 is intended as a general purpose (RC-5) infrared remote control system for use where a low voltage supply and a large debounce time are expected. The device can generate 2048 different commands and utilizes a keyboard with a single pole switch for each key. The commands are arranged so that 32 systems can be addressed, each system containing 64 different commands.

  • Page 23: Ad9883A

    11.17. AD9883A 11.17.1. General description The AD9883A is a complete 8-bit, 140 MSPS monolithic analog interface optimized for capturing RGB graphics signals from personal computers and workstations. Its 140 MSPS encode rate capability and full power analog bandwidth of 300 MHz supports resolutions up to SXGA (1280 1024 at 75 Hz).
  • Page 24 DATA OUTPUTS Data Output, RED Channel Data Output, GREEN Channel GREEN Data Output, BLUE Channel BLUE The main data outputs. Bit 7 is the MSB. The delay from pixel sampling time to output is fixed. When the sampling time is changed by adjusting the PHASE register, the output timing is shifted as well.
  • Page 25 pulses during the vertical interval. The COAST signal is generally not required for PC-generated signals. The logic sense of this pin is controlled by Coast Polarity (register 0FH, Bit 3). When not used, this pin may be grounded and Coast Polarity programmed to 1, or tied HIGH (to VD through a 10 k resistor) and Coast Polarity programmed to 0.

  • Page 26: Mc141585

    11.18. MC141585 11.18.1. General description This is a high performance HCMOS device designed to interface with a micro controller unit to allow colored symbols or characters to be displayed onto a LCD monitor. Because of the large number of fonts, 512 fonts including 496 standard fonts and 16 multi-color fonts, LMOSD2-16 is suitable to be adopted for the multi-language monitor application especially.
  • Page 27 NC (Pin 3) No connection. (Pin 4) This is the +5V power pin for the chip. HSYNC (Pin 5) This pin inputs a horizontal synchronize signal. It is negative polarity by default. The leading edge of HSYNC synchronizes its internal horizontal timing. The maximum input ratio between PIXin/HSYNC should not greater than 1580 for displaying 12X18 font matrix.

  • Page 28: Mc34063

    11.19. MC34063 11.19.1. Description The MC34063A Series is a monolithic control circuit containing the primary functions required for DC–to– DC converters. These devices consist of an internal temperature compensated reference, comparator, controlled duty cycle oscillator with an active current limit circuit, driver and high current output switch. This series was specifically designed to be incorporated in Step–Down and Step–Up and Voltage–Inverting applications with a minimum number of external components.

  • Page 29: Msp34X0G

    11.20. MSP34X0G MSP3400G Multistandard Sound Processor Family 11.20.1. Introduction The MSP 34x0G family of single-chip Multistandard Sound Processors covers the sound processing of all analog TV-Standards worldwide, as well as the NICAM digital sound standards. The full TV sound processing, starting with analog sound IF signal-in, down to processed analog AF-out, is performed on a single chip.

  • Page 30: Pin Connections

    • 5-band graphic equalizer for loudspeaker channel • Spatial effect for loudspeaker channel • Four Stereo SCART (line) inputs, one Mono input; two Stereo SCART outputs • Complete SCART in/out switching matrix • Two I S inputs; one I S output •...
  • Page 31 SC3_IN_R SCART 3 input, right SC3_IN_L SCART 3 input, left ASG4 AHVSS Analog Shield Ground 4 SC4_IN_R SCART 4 input, right SC4_IN_L SCART 4 input, left LV or AHVSS Not connected AGNDC Analog reference voltage AHVSS Analog ground AHVSS Analog ground Not connected Not connected CAPL_M...

  • Page 32: Ds90C385

    11.21. DS90C385 11.21.1. General Description The DS90C385 transmitter converts 28 bits of LVCMOS/LVTTL data into four LVDS (Low Voltage Differential Signaling) data streams. A phase-locked transmit clock is transmitted in parallel with the data streams over a fifth LVDS link. Every cycle of the transmit clock 28 bits of input data are sampled and transmitted.
  • Page 33 TxCLKIN TTL Ievel clock input. The rising edge acts as data strobe. Pin name TxCLK IN. R_FB Programmable strobe select. HIGH = rising edge, LOW = falling edge. TxCLK OUT+ Positive LVDS differential clock output. TxCLK OUT- Negative LVDS differential clock output. PWR DOWN TTL level input.
  • Page 34 TxIN8 TxOUT2+ TxIN10 TxOUT3- TxIN13 TxOUT3+ R_FB LVDS VCC LVDS VCC TxIN21 PLL VCC TxIN23 TxIN9 TxIN11 TxIN14 TxIN15 TxIN18 TxIN19 TxIN20 Ground Input Output Power NC : No Connect DS90C365 Pin Description — FPD Link Transmitter Pin name Description TxIN TTL level input.

  • Page 35: 4053B

    11.22. 4053B 11.22.1. General Description The HCC4051B, 4052B and 4053B (extended temperature range) and HCF4051B, 4052 B and 4053B (intermediate temperature range) are monolithic integrated circuits, available in 16-lead dual in-line plastic or ceramic package and plastic micropackage. HCC/HCF4051B, HCC/HCF4052B, and HCC/HCF4053B analog multiplexers/demultiplexers are digitally controlled analog switches having low ON impedance and very low OFF leakage current.

  • Page 36: 24C16

    11.23. 24C16 11.23.1. General Description The IS24C16-2 is a 1.8V (1.8V-5.5V) 16K-bit (2048x8) Electrically Erasable PROM, IS24C16-3 is a 2.5V (2.5V-5.5V) 16K-bit (2048x8) Electrically Erasable PROM,IS24C08-2 is a 1.8V (1.8V-5.5V) 8K-bit (1024x8) Electrically Erasable PROM and the IS24C08-3 is a 2.5V(2.5V-5.5V) 8K-bit (1024x8) Electrically Erasable PROM.

  • Page 37: 74Lx1G86Str

    11.24. 74LX1G86STR 11.24.1. General Description The 74LX1G86 is a low voltage CMOS SINGLE EXCLUSIVE OR GATE fabricated with sub-micron silicon gate and double-layer metal wiring C MOS technology. Power down protection is provided on all inputs and 0 to 7V can be accepted on inputs with no regard to the supply voltage.

  • Page 38: Irf7314

    11.25. IRF7314 11.25.1. General Description Fifth Generation HEXFETs from International Rectifier utilize advanced processing techniques to achieve extremely low on-resistance per silicon area. This benefit, combined with the fast switching speed and ruggedized device design that HEXFET Power MOSFETs are well known for, provides the designer with an extremely efficient and reliable device for use in a wide variety of applications.

  • Page 39: Ic Descriptions (For Digital)

    12. IC DESCRIPTIONS (FOR DIGITAL) STI5518 MX29LV160T MAX232_SMD 24C32 74HCU04 STV0360 TSH22 MAX809 CS4334 TDCC2345TV39A AMIC A43L2616 12.1. STI5518 12.1.1. General Description The STi5518 is a highly integrated single-chip decoder, designed for use in feature-rich mass-market set- top boxes. It integrates a high-performance 32-bit CPU, a dedicated block for DVB/DirecTV transport demultiplexing and descrambling, modules for MPEG-2 video and audio decoding with 3D-surround and MP3 support, advanced display and graphics features, a digital video encoder and all of the system peripherals required in a typical low-cost interactive receiver.

  • Page 40: 74Hcu04

    12.3. 74HCU04 12.3.1. General Description The M54/74HCU04 is a high speed CMOS HEX INVERTER (SINGLE STAGE) fabricated in silicon gate MOS technology. It has the same high speed performance of LSTTL combined with true CMOS low power consumption. As the internal circuit is composed of a single stage inverter, it can be used in crystal oscillator. All inputs are equipped with circuits against static discharge and transient excess voltage.

  • Page 41: Tsh22

    12.4. TSH22 12.4.1. General Description The TSH22 is a dual bipolar operational amplifier offering a single supply operation from 3V to 30V with very good performances: medium speed (25MHz), unity gain stability and low noise. The TSH 22 is therefore an enhanced replacement of standard dual operational amplifiers. 12.4.2.

  • Page 42: Amic A43L2616

    12.6. AMIC A43L2616 12.6.1. General Description The A43L2616-PH is 67,108,864 bits synchronous high data rate Dynamic RAM organized as 4 X 1,048,576 words by 16 bits, fabricated with AMIC’s high performance CMOS technology. Synchronous design allows precise cycle control with the use of system clock. I/O transactions are possible on every clock cycle.
  • Page 43 22” TFT TV Service Manual 13/10/2004...

  • Page 44: Mx29Lv160T

    12.7. MX29LV160T 12.7.1. General Description The MX29LV160T/B & MX29LV160AT/AB is a 16-megabit Flash memory organized as 2M bytes of 8 bits or 1M words of 16 bits. MXIC's Flash memories offer the most cost-effective and reliable read/write non- volatile random access memory. The MX29LV160T/B & MX29LV160AT/AB is packaged in 44-pin SOP, 48-pin TSOP and 48-ball CSP.

  • Page 45: 24C32

    12.8. 24C32 12.8.1. General Description The AT24C32/64 provides 32,768/65,536 bits of serial electrically erasable and programmable read only memory (EEPROM) organized as 4096/8192 words of 8 bits each. The device’s cascadable feature allows up to 8 devices to share a common 2-wire bus. The device is optimized for use in many industrial and commercial applications where low power and low voltage operation are essential.

  • Page 46: Stv0360

    12.9. STV0360 12.9.1. General Description The STV0360 is a single-chip COFDM (coded orthogonal frequency division multiplex) demodulator that performs IF to MPEG-2 block processing of OFDM carriers. It is intended for digital terrestrial receivers for compressed video, sound and data services. The chip implements all the functions from the tuner IF output up to the MPEG-2 transport stream input.
  • Page 47 22” TFT TV Service Manual 13/10/2004...
  • Page 48 22” TFT TV Service Manual 13/10/2004...

  • Page 49: Max809

    12.10. MAX809 12.10.1. General Description The MAX803/MAX809/MAX810 are microprocessor (µP) supervisory circuits used to monitor the power supplies in µP and digital systems. They provide excellent circuit reliability and low cost by eliminating external components and adjustments when used with +5V, +3.3V,+3.0V, or +2.5V powered circuits. These circuits perform a single function: they assert a reset signal whenever the V supply voltage declines below a preset threshold, keeping it asserted for at least 140ms after V...

  • Page 50: Tdcc2345Tv39A

    12.11. TDCC2345TV39A 12.11.1. General Description • Receiving System : Designed to cover all bands in VHF and UHF including digital terrestrial channels for DVB-T system. • Receiving Channel : 47 MHz ~ 862 MHz • Intermediate Frequency : Digital (center) 36.125 MHz •...

  • Page 51: Service Menu Settings

    13. SERVICE MENU SETTINGS All system, geometry and white balance alignments are performed in production service mode. Before starting the production mode alignments, make sure that all manual adjustments are done correctly. To start production mode alignments enter the main menu by pressing “M” button and then press the digits 4, 7, 2 and 5 buttons respectively.

  • Page 52: Options Menu Settings

    13.2. OPTIONS MENU SETTINGS In order to enter Options menu, move the cursor to Options… parameter by pressing “▲/▼” buttons in Service Menu and press “◄/►” button. The following menu appears on the screen. Options... First APS A.P.S. Headphone Subwoofer Lineout Dolby prologic Equalizer...
  • Page 53 Options... Equalizer L’ FM Prs Avl On 0 17 : O ff On/Off Enables / disables I Standard. On/Off Enables / disables L Standard. L’ On/Off Enables / disables L’ Standard. On/Off Enables / disables AUS Standard. On/Off Enables / disables NZ Standard. On/Off Enables / disables NM Standard.
  • Page 54 Nicam Prs Avl On Adjusts the Nicam Prescaler value, when Automatic Volume Levelling is On Min. Value: 0000 00000 Max. Value: 00FF 00255 Scart Prs Avl On Adjusts the Scart Prescaler value, when Automatic Volume Levelling is On Min. Value: 0000 00000 Max.
  • Page 55 On/Off Enables / disables Automatic Volume Levelling System. Top TXT On/Off Enables / disables TopText. Fast TXT On/Off Enables / disables FastText. TXT Lang Switches between Teletext Language Groups. Min. Value: 0000 00000 Max. Value: 0004 00004 IF Freq Adjusts the IF Frequency. Min.
  • Page 56 MENU On/Off Enables / disables semi-transparent MENU. Enables / disables teletext MIX mode. Enable: 00000001 Disable: 00000000 HOTEL MODE Enables / disables Hotel mode. Enable: 00000001 Disable: 00000000 Not used. LDLY Adjusts the Luna / chroma DeLaY value. Min. Value: 0000 00000 Max.

  • Page 57: Aps Wss Test Menu

    13.3. APS WSS TEST MENU In order to enter Aps Wss Test menu, move the cursor to Aps Wss Test parameter by pressing “▲/▼” buttons in Service Menu and press “◄/►” button. The following menu appears on the screen. Aps Wss Test Programme Search Pdc Format 1...

  • Page 58: Block Diagrams

    14. BLOCK DIAGRAMS 14.1. ANALOG 3-17AMP08 - POWER+AUDIO AMPL.BOARD AUDIO AMPLIFIER (2x3W) POWER REGULATORS (2.5V,3.3V,5V,8V,12V,33V) MAIN L,R 1-17SC10 - FRONT END BOARD 2-17MB10-SCALER BOARD ITU 656-8 bit MICROCONTROLLER TUNER SOFTWARE ROM IF PROCESSOR EEPROM VIDEO SWITCH Txt RGB,FB SCALER IC 2 X RGB SWITCH OSD IC VIDEO PROCESSOR...
  • Page 59 SVHS_Y SVHS_C PIP_CVBS_EXT YUV 4:2:2 8-bit SC2_C CVBS\Y Selected Video Output SC1_CVBS HS,VS 3.3V SC2_CVBS Y/CVBS 6415C CVBS BAV_CVBS CVBS_IF MONO_MAIN 4053 OPTIONAL AUDIO CVBS_PIP SC2_OUT_V MONO_PIP SWITCH AM_MONO RGB_SW VPC 3230D SC1_RGB, FB SC_RGB RGB, FB Video pro. PI5V330 TEA 5114 SC_FB1 SC1_L,R...
  • Page 60 2Mx32 SDRAM YUV 4:2:2 8-bit, HS,VS Port A 256K/512K YUV 4:2:2 8-bit RGB 3 X 1-bit OSD IC GM6015 3x8 bit LVDS Address, Data Bus MC141585 Selected Video Txt RGB,FB SDA5550 4:4:4RGB 24-bit Port B HS,VS Control Signals 8K/16K OPTIONAL EEPROM AD9883 Analog PC...
  • Page 61 SPEAKER MAIN L,R MUTE AN7522N ST-BY AUDIO AMPL. SPEAKER 3.3V 2.5V ST-BY REGULATORS POWER+AUDIO AMP. BOARD 22” TFT TV Service Manual 13/10/2004...

  • Page 62: Digital

    14.2. DIGITAL 22” TFT TV Service Manual 13/10/2004...

  • Page 63: Circuit Diagrams

    15. CIRCUIT DIAGRAMS 15.1. ANALOG 17AMP08 22” TFT TV Service Manual 13/10/2004...
  • Page 64 17AMP08 22” TFT TV Service Manual 13/10/2004...
  • Page 65 17MB10 22” TFT TV Service Manual 13/10/2004...
  • Page 66 17MB10 22” TFT TV Service Manual 13/10/2004...
  • Page 67 17MB10 22” TFT TV Service Manual 13/10/2004...
  • Page 68 17SC10-1 22” TFT TV Service Manual 13/10/2004...
  • Page 69 17SC10-1 22” TFT TV Service Manual 13/10/2004...
  • Page 70 17SC10-1 22” TFT TV Service Manual 13/10/2004...
  • Page 71 17SC10-1 22” TFT TV Service Manual 13/10/2004...

  • Page 72: Digital

    15.2. DIGITAL 22” TFT TV Service Manual 13/10/2004...
  • Page 73 22” TFT TV Service Manual 13/10/2004...
  • Page 74 22” TFT TV Service Manual 13/10/2004...
  • Page 75 22” TFT TV Service Manual 13/10/2004...
  • Page 76 22” TFT TV Service Manual 13/10/2004...
  • Page 77 22” TFT TV Service Manual 13/10/2004...
  • Page 78 22” TFT TV Service Manual 13/10/2004...

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