Technology News

How to turn on front camera on Samsung Phones

2011-03-30T11:53:00.003+05:30

Someone from the comments section asked how to take pictures with the front camera of the Samsung Genio Slide or Samsung CorbyPro as it is known outside the UK. Well, I don't know about taking pictures, but you can turn on the front camera (if your phone has one) from most Samsung phones using a series of codes. You can probably use it to check your image if your reflection on the screen isn't clear enough.

Anyways, on your Samsung Phone's phonepad, type in: *#0*#. An LCD Test screen should appear, choose CIFcam (it's in the middle) and you should be able to turn on the front camera. I tried touching the screen and it seems to take a still picture though I don't know what folder it is saved. Maybe touching the screen doesn't take a picture at all. To exit, just press the end button or the home button on your phone.

Why is this useful? Well, a lot of people just wants the option to turn on the front camera on their Samsung phone just to make sure its working since not all countries support video calling without actually making a video call and some Samsung phones don't have the option to turn on the front camera.

Again, this trick should work on most Samsung Touchscreen phones. It worked on the CorbyPro,Samsung i8910HD,Samsung B7610.

How to find Hidden camera's?

2011-03-14T22:14:00.005+05:30

1
Do a physical search of the premises. This involves a slow, meticulous search of the room or building you suspect is "wired".

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- Look around for anything that "seems different", like flower arrangements, pictures on the wall out of level or in unusual places, or lampshades that don't look normal.
- Look inside flower pots, light fixtures, and other places where a microphone transmitter can easily be hidden.
- Look under couch cushions, table tops, and shelves. Underneath shelves and table tops are excellent places for miniature cameras.
2
Turn off the lights, and carefully look around the room for tiny red or green led lights. Some microphones have "power on" indicator lights, and if the person who sets it up is careless they may fail to cover or deactivate this feature. While the lights are off, grab a flashlight and carefully examine all mirrors--these can be made transparent from one side so that a camera can see through, but they rely on the observer's side being darker than the area observed in order to keep the other side of the mirror reflective
3
Listen carefully as you walk the entire room quietly. Many small motion sensitive cameras make an almost inaudible click or buzz when they operate.
4
Search the room or premises for wires that do not seem to "go anywhere", such as an appliance or other familiar device. "Hardwired" spy equipment is less common with modern technology, but is still used for permanent surveillence in commercial businesses for loss prevention.
5
Buy an "RF signal detector" or "Bug Detector". If you seriously beleive you are being spied on, buy an RF (radio frequency) detector, and do a sweep of your room, building, or home. These portable devices are small, simple to use, and fairly inexpensive. There are bugs that use multiple frequencies in rapid sequence called 'spread spectrum' that a RF detector will not detect. These bugs are used by professionals and require a spectrum analyzer and an experienced tech to find.
some more tips for you...
1. Check your smoke detector. Climb up a ladder and get as close as you can to the smoke detector. Take a flashlight and shine it directly onto the grill of the smoke detector. If you see a tiny glass lens, you know you have a hidden camera.

2. Make sure all of your electrical outlets work. You won't be able to plug anything into an electrical outlet that has a hidden camera in it.

3. Use a flashlight to look for pinhole-sized holes in clocks, lamps and radios. If you're renting a furnished apartment, all the basic amenities were probably included. Unfortunately, hidden video cameras can be found in these types of common household appliances.
Take a flashlight and carefully examine books, clocks, air purifiers, lamps and fake plants. If you notice any pinhole-sized holes, you might have a hidden camera.

4. Shine a flashlight directly onto a wall mounted mirror. Take the flashlight and move it progressively closer to the mirror until it touches the mirror. If you can see through the mirror, or notice the light shining through it, you have a one-way mirror, and possibly a hidden camera behind it. A mirror should always reflect light, not allow the light to penetrate through it.

5. If you're unsure about what you see, sweep your entire apartment with a hidden camera detector. There are many types on the market. You can hold one of them up to your eye, and look around the room. When it finds a camera, you'll see the light reflection from the cameras LED. Another one vibrates when you're close in close vicinity to a hidden camera. Others give off flashing lights or beeping sounds when you sweep specific objects that contain hidden cameras.

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டச் ஸ்க்ரீன் technology

2010-12-16T11:28:00.002+05:30

Touchscreens (sometimes spelled as touch screen) are everywhere: they are embedded in phones, office equipment, speakers, digital photo frames, TV control buttons, remote controls, GPS systems, automotive keyless entry, and medical monitoring equipment. As a component, they have reached into every industry, every product type, every size, and every application at every price point. In fact, if a product has an LCD or buttons, a designer somewhere is probably evaluating how that product, too, can implement touchscreen technology. As with any technology, there are many different ways to implementation approaches, many promises of performance, and many different technical considerations when designing a touchscreen.

Anatomy of a touchscreen
Knowing what you need is an important first step in designing a touchscreen product. Vendors in the touchscreen supply chain frequently offer different pieces of the puzzle, often times combining several to create a value chain for the end customer. Figure 1 shows a blowup of the touchscreen ecosystem. This ecosystem is the same whether it is in the latest Notebook PC or the latest touch-enabled mobile phone.

Figure 1: Touchscreen contoller "autopsy"
(Click on image to enlarge)

There are six key elements:
1. Front panel or bezel: The front panel or bezel is the outermost skin of the end product. In some products, this bezel will encompass a protective clear overlay to keep weather and moisture out of the system, and to resist scratching and vandalism to the underlying sensor technology (see item 3 below). Other times, the outmost bezel simply covers the edges of the underlying touch sensor; in this case, it is purely decorative.

2. Touch controller: The touch-controller is generally a small microcontroller-based IC that sits between the touch sensor and the embedded system controller. This IC can either be located on a controller board inside the system or it can be located on a flexible printed circuit (FPC) affixed to the glass touch sensor. This touch controller takes information from the touch sensor and translates it into information that the PC or embedded system controller can understand.

3. Touch sensor: A touchscreen "sensor" is a clear glass panel with a touch-responsive surface. This sensor is placed over an LCD so that the touch area of the panel covers the viewable area of the video screen. There are many different touch-sensor technologies on the market today, each using a different method to detect touch input. Fundamentally, these technologies all use an electrical current running through the panel that, when touched, causes a voltage or signal change. This voltage change is sensed by the touch controller to determine the location of the touch on the screen.

4. Liquid crystal display: Most touchscreen systems work over traditional LCDs. LCDs for a touch-enabled product should be chosen for the same reasons they would in a traditional system: resolution, clarity, refresh speed, and cost. One major consideration for a touchscreen, however, is the level of electrical emission. Because the technology in the touch sensor is based on small electrical changes when the panel is touched, an LCD that emits a lot of electrical noise can be difficult to design around. Touch sensor vendors should be consulted before choosing an LCD for a touchscreen system.

5. System software : Touchscreen driver software can be either shipped from the factory (within the embedded OS of a cell phone) or offered as add-on software (like adding a touchscreen to a traditional PC). This software allows the touchscreen and system controller to work together and tells the product's operating system how to interpret the touch-event information that is sent from the controller. In a PC-style application, most touchscreen drivers work like a PC mouse. This makes touching the screen similar to clicking the mouse at the same location on the screen. In embedded systems, the embedded controller driver must compare the information presented on the screen to the location of the received touch.

The "big three" of touchscreen technology

Resistive touchscreens are the most common touchscreen technology. They are used in high-traffic applications and are immune to water or other debris on the screen. Resistive touchscreens are usually the lowest-cost touchscreen implementation. Because they react to pressure, they can be activated by a finger, gloved hand, stylus, or other object, such as a credit card.
Surface-capacitive touchscreens provide a much clearer display than the plastic cover typically used in a resistive touchscreen. In a surface-capacitive display, sensors in the four corners of the display detect capacitance changes due to touch. These touchscreens can only be activated by a finger or other conductive object.
Projected-capacitive touchscreens are the latest entry to the market. This technology also offers superior optical clarity, but it has significant advantages over surface-capacitive screens. Projected capacitive sensors require no positional calibration and provide much higher positional accuracy. Projected-capacitive touchscreens are also very exciting because they can detect multiple touches simultaneously.

How touchscreens work
Let's look inside the two most common touchscreen technologies.

The most widely used touchscreen technology is resistive. Most people have used one of these resistive touchscreens already, in the ATM at the bank, in the credit card checkout in most stores, or even for entering an order in a restaurant. Projective-capacitance touchscreens, on the other hand, are not as broadly available yet, but are gaining market momentum. Many cellphones and portable music players are beginning to come to market with projective-capacitance interfaces. Both resistive and capacitive technologies have a strong electrical component, both use ITO (Indium-Tin-Oxide, a clear conductor), and both will be around for a long time to come.

A resistive touchscreen (Figure 2, left side) consists of a flexible top layer, then a layer of ITO (Indium-Tin-Oxide), an air gap and then another layer of ITO. The panel has 4 wires attached to the ITO layers: one on the left and right sides of the 'X' layer, and one on the top and bottom sides of the 'Y' layer.

Figure 2. Stackup layers for "resistive" (left) and "capacitive" (right) screens
(Click on image to enlarge)

A touch is detected when the flexible top layer is pressed down to contact the lower layer. The location of a touch is measured in two steps: First, the 'X right' is driven to a known voltage, and the 'X left' is driven to ground and the voltage is read from a Y sensor. This provides the X coordinate. This process is repeated for the other axis to determine the exact finger position.

Resistive touchscreens also come in 5-wire, and 8-wire versions. The 5-wire version replaces the top ITO layer with a low-resistance "conductive layer" that provides better durability. The 8-wire panel was developed to enable higher resolution by enabling better calibration of the panel's characteristics.

There are several drawbacks to resistive technology. The flexible top layer has only 75%-80% clarity and the resistive touchscreen measurement process has several error sources. If the ITO layers are not uniform, the resistance will not vary linearly across the sensor. Measuring voltage to 10- or 12-bit precision is required, which is difficult in many environments. Many of the existing resistive touchscreens also require periodic calibration to realign the touch points with the underlying LCD image.

Conversely, projected-capacitive touchscreens have no moving parts. The only thing between the LCD and the user is ITO and glass, which have near 100% optical clarity. The projected-capacitance sensing hardware consists of a glass top layer (Figure 2, right side), followed by an array of X sensors, an insulating layer, then an array of Y sensors on a glass substrate. The panel will have a wire for each X and Y sensor, so a 5 x 6 panel will have 11 connections (Figure 3), while a 10 x 14 panel will have 24 sensor connections.

Figure 3. Signal intensity at rows and columns denote location of touch
(Click on image to enlarge)

As a finger or other conductive object approaches the screen, it creates a capacitor between the sensors and the finger. This capacitor is small relative to the others in the system (about 0.5 pF out of 20 pF), but it is readily measured. One common measuring technique known as Capacitive Sensing using a Sigma-Delta Modulator (CSD) involves rapidly charging the capacitor and measuring the discharge time through a bleed resistor.

A projected capacitive sensor array is designed so that a finger will interact with more than one X sensor and more than one Y sensor at a time (See Figure 3). This enables software to accurately determine finger position to a very fine degree through interpolation. For example, if sensors 1, 2 and 3 see signals of 3, 10, and 7, the center of the finger is at:

[(1 × 3) + (2 × 10) + (7 × 3)]/(3 + 10 + 7) = 2.2

Since projected-capacitive panels have multiple sensors, they can detect multiple fingers simultaneously, which is impossible with other technologies. In fact, projective capacitance has been shown to detect up to ten fingers at the same time. This enables exciting new applications based on multiple finger presses, including multiplayer gaming on handheld electronics or playing an touchscreen piano.

Without question, touchscreens are great looking. They have begun to define a new user interface and industrial design standard that is being adopted the world over. In everything from heart-rate monitors to the latest all-in-one printers, touchscreens are quickly becoming the standard of technology design.

Beyond just looks, however, touchscreens provide an unparalleled level of security from tampering, resistance from weather, durability from wear, and even enable entirely new markets with unique features such as multi-touch touchscreens. With touchscreens making their way into so many types of products, it's imperative that design engineers understand the technology ecosystem and technology availability.

About the authors
Steve Kolokowsky is a Member of the Technical Staff in Cypress Semiconductor's Consumer and Computation Division (CCD). Steve's focus is high-speed USB peripheral products. He has participated in the design of many of today's highest-selling MP3 players. Steve has a BS in Systems Engineering from Rensselaer Polytechnic Institute in Troy, NY. He is based in sunny San Diego, California, USA and can be reached at syk@cypress.com

Trevor Davis is currently the Director of Marketing for Cypress's Consumer and Computation Division (CCD) focused on Universal Serial Bus (USB) in consumer products. Trevor received his undergraduate degree from the United States Air Force Academy and also holds his Masters in Business Administration. Trevor served as an Air Force Officer for five years before joining Cypress. Trevor lives in San Diego, CA and can be reached at tmd@cypress.com

Related articles of interest
1. Using capacitive sensor user interfaces in next generation mobile and embedded consumer devices, Mariel Van Tatenhove and Andrew Hsu, Synaptics, Inc.
2. Designer's guide to rapid prototyping of capacitive sensors on any surface, Mark Lee, Cypress Semiconductor Corp.
3. Capacitive sensors can replace mechanical switches for touch control, Wayne Palmer, Analog Devices Inc.
4. Building a reliable capacitive-sensor interface, Wayne Palmer, Analog Devices, Inc.
5. The art of capacitive touch sensing, Mark Lee, Cypress Semiconductor Corp.
6. Practical considerations for capacitive touchscreen system design (Part 1 of 2), Yi Hang Wang, Cypress Semiconductor Corp.
7. Basics and implementation of capacitive proximity sensing (Part 2 of 2), Ganesh Raaja, Cypress Semiconductor Corp.

List of temples in Tamil Nadu - Wikipedia, the free encyclopedia

2010-12-05T19:27:00.000+05:30

List of temples in Tamil Nadu - Wikipedia, the free encyclopedia

15 Hot New Technologies That Will Change Everything - PCWorld

2010-12-03T21:08:00.000+05:30

15 Hot New Technologies That Will Change Everything - PCWorld

Osho Words

2010-08-25T21:42:00.004+05:30

Osho Quotes and Sayings

Go beyond the mind. That is the essence of the whole teaching of all the awakened ones.
An obsession simply means a wound in your being, which keeps attracting you again and again, which goes on declaring itself, which wants your attention. You cannot drop it. How can you drop your wound? An obsession is a psychic wound, you cannot drop it. Understand it. Watch it. Pay attention to it. Be meditatively with it. And the more you are meditatively with it, the more it will be healed.
I want to destroy all your belief systems, all your theologies, all your religions. I want to open all your wounds so they can be healed. The real medicine is not a belief system; the real medicine is meditation. Do you know that both the words come from the same root: medicine and meditation? Medicine heals the body, meditation heals your soul. But their function is the same, healing.
For an ambitious mind reality is not available, because reality is available only in the present and the ambitious mind is always somewhere else, ALWAYS somewhere else. The ambitious mind is never content. Discontentedness is its very base.
Existence is going nowhere. It is simply here, just playing with thousands of forms, thousands of situations, creating more and more consciousness, more and more happiness, more and more love. If it is not happening to you, it simply means you are keeping your doors closed.
Bring awareness to each act. Walking on the road, walk fully alert; eating, eat with awareness. Whatsoever you are doing, don’t let the past and the future interfere. Be in the present. That’s what awareness is all about. Taking a shower, just take the shower. Don’t let the mind go far away, into the past, into the future.
Pleasure keeps you in a neurotic state, restless, always in turmoil. So many desires, and every desire unquenchable, clamoring for attention. You remain a victim of a crowd of insane desires — insane because they are unfulfillable — and they go on dragging you into different directions. You become a contradiction.
Tathata — acceptance, total acceptance, means no desire. Desire arises out of nonacceptance. You cannot accept a certain situation, so desire arises. You live in a hut and you cannot accept it; this is too much for the ego, you want a palace — then you are a poor man, but not because you live in a hut, no. In huts, emperors have lived. Buddha has lived under a tree, and he was not a poor man. You cannot find a richer man anywhere.
A man who has entered in this affair of the search leaves tomorrow himself; he does not wait for death to take it away. He has no tomorrow. He has only this moment, and he has to concentrate himself into this moment, without holding anything back. In this crystallization is the great happening of enlightenment.
Whenever you are angry, your being has leakages. Whenever you desire, your being has holes in it. Whenever you are jealous, filled with hatred, sexuality, you are not a pillar of energy. Hence buddhas have been teaching us to be desireless, because whenever you are desireless energy does not move outwards, energy moves within. It becomes an inner circle, it becomes an electric field, a bioelectric field. When that field is there, without any leakage, you are a pillar; you cannot be defeated. But you are not thinking of victory, remember, because if you are thinking of victory you cannot be a pillar of energy. Then that desire becomes a leakage.
Blissfulness is totally different from pleasure. Pleasure is of the body, joy is of the mind; bliss is of the soul. Listening to beautiful music you feel joy. Seeing beautiful architecture, sculpture, a painting, you feel joy. Seeing the Taj Mahal, listening to Mozart, you feel joy — that is of the mind. Bliss is absolutely beyond both body and mind.
Love, trust, beauty, sincerity, truthfulness, authenticity — these are all feminine qualities, and they are far greater than any qualities that man has. But the whole past has been dominated by man and his qualities..

2010-07-14T13:05:00.003+05:30

2010-07-14T12:59:00.000+05:30

2010-07-14T12:58:00.001+05:30

Panchanana or panchamukhi Shiva

This is the five faced or five headed form of Shiva. The image is from exotic India art, and is available from them as a painting on cotton. Each of the faces has a name and represents a specific aspect. These five faces are:- Isana Tatapurusha Aghora Vamadeva Sadyojata

Isana faces south-east and represents the Ishwara aspect of Shiva known as Sadashiva or the Eternal Shiva.

Tatpurusha faces the east and represents the deluded purusha or ego aspect of Shiva.

Aghora faces south and represents the destructive and regenerative aspect of Shiva, that like fire, first devours life and then prepares the ground for its renewal.

Vamadeva faces north and represents the healer and preserver aspect of Shiva.

Sadyojata faces west and represents the creative power of Shiva.

Some of the images are quite small in this article. Click on them to see a larger image.

Aum Namah Shivaya

Technology News

How to turn on front camera on Samsung Phones

How to find Hidden camera's?

Gaussmeter RF & EMF-Meter

டச் ஸ்க்ரீன் technology

List of temples in Tamil Nadu - Wikipedia, the free encyclopedia

15 Hot New Technologies That Will Change Everything - PCWorld

Osho Words

Panchanana or panchamukhi Shiva