Abstract: A biaxially oriented polyester film having the following physical property is provided: when cooled from the molten state at a cooling rate of 20° C./min, an observed recrystallization temperature is 175° C.-200° C. The biaxially oriented polyester film is formed by a thick sheet before bidirectional stretching that is melted and extruded by an extruder and then cooled and formed on a casting roll. The thick sheet before stretching having the following physical property as analyzed by differential scanning calorimetry: a crystallization rate is less than 10%.

Abstract: A biaxially oriented polyester film having the following physical property is provided: when cooled from the molten state at a cooling rate of 20° C/min, an observed recrystallization temperature is 175° C-200° C. The biaxially oriented polyester film is formed by a thick sheet before bidirectional stretching that is melted and extruded by an extruder and then cooled and formed on a casting roll. The thick sheet before stretching having the following physical property as analyzed by differential scanning calorimetry: a crystallization rate is less than 10%.

Abstract: A PET synthetic paper is composed of a PET substrate and a soft ink absorbing coating coated on the PET substrate. The soft ink absorbing coating includes an acrylic coating and a polyurethane coating embossed on the acrylic coating. The acrylic coating has excellent printability and the polyurethane coating has velvety-soft tactility.

Abstract: A PET synthetic paper is composed of a PET substrate and a soft ink absorbing coating coated on the PET substrate. The soft ink absorbing coating includes an acrylic coating and a polyurethane coating embossed on the acrylic coating. The acrylic coating has excellent printability and the polyurethane coating has velvety-soft tactility.

Abstract: A data transfer system is disclosed, which comprises a serial controller and a switch device. The switch device includes a first serial port, a second serial port, and a transferring unit. The first serial port and the second serial port are individually configured to transmit a first type signal to the transferring unit. The transferring unit selectively switches a transmission of the first type signal from either the first serial port or the second serial port to the serial controller. The first serial port and the second serial port are individually configured to transmit a second type signal to the serial controller, wherein the first type signal is faster than the second type signal in transmission rate.

Abstract: A reading apparatus suited for being inserted into a first electronic device or a second electronic device is disclosed. The first electronic device has a first interface receptacle. The second electronic device has a second interface receptacle. The reading apparatus has a first interface-module and a second interface-module. The first interface-module comprises a plurality of pins corresponding to the first interface receptacle and used to transmit a first interface signal. The pins comprise a plurality of first pins which are disposed on a top surface of a circuit board, and comprises a first positive-negative direction determining pin which is used to confirm whether the first interface-module is positively inserted or negatively inserted into and the first interface receptacle. The second interface-module comprises a plurality of conduction pad corresponding to the second interface receptacle and used to transmit a second interface signal.

Abstract: A wearable audio-visual device includes a casing structure, a first image generating unit, a second image generating unit, and two earphone structures. The casing structure includes a main casing and two lateral casings. The first image generating unit includes a first exposed portion exposed from the main casing. The first exposed portion has a first viewing area, and a first eye image light source generated by the first image generating unit passes through the first viewing area and then is projected onto a first eye. The second image generating unit includes a second exposed portion exposed from the main casing. The second exposed portion has a second viewing area, and a second eye image light source generated by the second image generating unit passes through the second viewing area and then is projected onto a second eye. The two earphone structures respectively disposed on the two lateral casings.

Abstract: A modularized information playback device includes a casing module, a control circuit module, a microprojector module, a speaker module, an audio frequency receiving module, and a wireless transmission module. The casing module includes a first network structure, an image projection opening, and an audio frequency receiving opening. The control circuit module is disposed inside the casing module. The microprojector module is disposed inside the casing module, and the microprojector module includes a projection lens assembly partially exposed from the image projection opening. The speaker module is disposed inside the casing module, and the speaker module is adjacent to the first network structure. The audio frequency receiving module is disposed inside the casing module, and the audio frequency receiving module is adjacent to the audio frequency receiving opening. The wireless transmission module is disposed inside the casing module.

Abstract: A reader apparatus comprises a first interface module, a second interface module, a storing module and a processor. The first interface module includes a plurality of terminals that are transferring first interface signals. The second interface module includes a plurality of conducting pads which are transferring a second interface signal. The storing module is for storing data. The processor converts storing signals generated by the storing module to the first interface signals or the second interface signals.

Abstract: A data transfer system is disclosed, which comprises a serial controller and a switch device. The switch device includes a first serial port, a second serial port, and a transferring unit. The first serial port and the second serial port are individually configured to transmit a first type signal to the transferring unit. The transferring unit selectively switches a transmission of the first type signal from either the first serial port or the second serial port to the serial controller. The first serial port and the second serial port are individually configured to transmit a second type signal to the serial controller, wherein the first type signal is faster than the second type signal in transmission rate.

Abstract: A reader apparatus comprises a first interface module, a second interface module, a storing module and a processor. The first interface module includes a plurality of terminals that are transferring first interface signals. The second interface module includes a plurality of conducting pads which are transferring a second interface signal. The storing module is for storing data. The processor converts storing signals generated by the storing module to the first interface signals or the second interface signals.

Abstract: A card reader includes a hollow base provided with a USB standard metal casing at one side, and an electric module mounted in the USB standard metal casing and the hollow base and defining with the USB standard metal casing an electronic card receiving space for accommodating an electric card such that the accommodated electronic card is insertable with the USB standard metal casing into a USB port of an electronic apparatus for two-way data transfer (reading or storing) between the electronic card and the electronic apparatus.

Abstract: A card reader includes a housing, a sliding carrier mounted in the housing to carry a USB-configured metal casing, a push tab fastened to the sliding carrier and suspending out of one side of the housing for operation by a user to move the sliding carrier and the USB-configured metal casing to the front position for insertion into a USB port in an external electronic apparatus, a circuit module mounted in the metal casing for electric connection to the external electronic apparatus after insertion of the metal casing into the USB port, a rack mounted in the bottom side of the circuit board and holding a set of conducting terminals for receiving a first electronic card, and an expansion module mounted in the rear side for the contact of a second electronic card that is inserted through a top insertion slot in the housing into a top insertion slot in the sliding carrier.

Abstract: A card reader includes a USB standard casing, a holder block fastened to the USB standard casing and defining therein an insertion hole for the insertion of an electronic card, a circuit board mounted in the USB standard casing and having a first contact set configured subject to the USB specification and a second contact set, and an electric connector electrically connected to the second contact set and kept in proximity to the insertion hole for the contact of an electronic card electrically.

Abstract: A card reader includes a hollow base provided with a USB standard metal casing at one side, and an electric module mounted in the USB standard metal casing and the hollow base and defining with the USB standard metal casing an electronic card receiving space for accommodating an electric card such that the accommodated electronic card is insertable with the USB standard metal casing into a USB port of an electronic apparatus for two-way data transfer (reading or storing) between the electronic card and the electronic apparatus.

Abstract: A USB socket connector includes a plastic core member, which has metal terminals embedded therein and a constraint member, for example, a raised portion, and a metal casing, which houses the plastic core member and has a constraint device, for example, notch that receives the constraint device of the plastic core member to hold the plastic core member in position upon insertion of the plastic core member into the casing, and two rear extension arms that are bent into shape and stopped against the back side of the plastic core member to hold down the plastic core member firmly in place after insertion of the plastic core member into the metal casing.

Abstract: A USB socket connector includes a plastic core member, which has metal terminals embedded therein and a constraint member, for example, a raised portion, and a metal casing, which houses the plastic core member and has a constraint device, for example, notch that receives the constraint device of the plastic core member to hold the plastic core member in position upon insertion of the plastic core member into the casing, and two rear extension arms that are bent into shape and stopped against the back side of the plastic core member to hold down the plastic core member firmly in place after insertion of the plastic core member into the metal casing.

Abstract: An exemplary warning method for reducing the risk of damage to a projection device is disclosed. The warning method includes: establishing a predetermined performance threshold and a warning message; detecting a current performance value from the projection device; judging whether the detected current performance value exceeds the predetermined performance threshold; projecting the warning message.